Abstract

A U-shaped plate for a weighing module and a weighing module having the same are disclosed. The U-shaped plate includes an upper end surface connecting a first and second side surface, each including a bottom end and an upper portion together forming four corners of the U-shaped plate and providing an inverted U-shaped structure formed by bending a flat and straight metal sheet. A lower width of the U-shaped plate is greater than an upper width thereof. The U-shaped plate includes an opening for mounting a sensor which extends from the bottom end of the first side surface to the upper portion of the second side surface via the upper end surface. Each of the four corners provide a recessed structure. When used with a weighing module, the U-shaped plate matches the sensor. An integrated molding design overcomes defects and, realizes safety and practicability.

IPC Classes  ?

• G01G 21/28 - FramesHousings

Abstract

The present invention provides a system (100) and a method for controlling a verification process of a measuring device (10) based on low-code technology. The system (100) includes a remote verification system cloud service (40), a verification process creation tool (30), an access point (20) for a verification competent authority to the verification process creation tool (30), and an access point for verification personnel to the remote verification system cloud service (40), wherein access to the remote verification system cloud service (40) is given by at least one of the measuring device (10) and a verification personnel terminal device (50). The remote verification system cloud service (40) is connectable to the verification process providing tool (30). The method comprises at least one of a step of providing said system (100) and a step of using said system (100). In embodiments, the method comprises a step S1 of creating a verification flowchart (80, A1, B1, A2, B2) and a step S2 of implementing at least one verification task represented by the verification flowchart. The present invention employs a graphical and visual verification process creation tool to address the challenges posed by the wide variety of types of measuring devices and the complexity and variability of verification processes. Additionally, the present invention significantly simplifies the operations of verification personnel, reduces the requirements for skills and experience of the verification personnel, and improves the objectivity and fairness of verification results.

IPC Classes  ?

• G06F 21/44 - Program or device authentication
• G06F 11/22 - Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
• G06F 11/30 - Monitoring
• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A volume measurement method and apparatus using a depth camera, and a computer-readable medium, are provided. A first depth image of a reference countertop is acquired which includes coordinate and depth data of pixels, the reference countertop adapted for placement of a measured object. The coordinate and depth data are substituted into countertop empirical equations to obtain simulated images. Each of the countertop empirical equations represent a height variation pattern of the reference countertop. A correlation between each of the simulated images and the first depth image is calculated. A simulated image with the highest correlation is used as a target image of the reference countertop. A countertop height of the reference countertop is obtained based on the target image, a height of the measured object is calculated using the countertop height, and a volume of the measured object is calculated using the height. These disclosures improve accuracy of object volume measurement.

IPC Classes  ?

• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G01F 17/00 - Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies

Abstract

The present invention provides a hinged foldable rod and a commercial weighing instrument comprising same. The hinged foldable rod comprises a first rod (10), a upright rod (20), an cover (30) and a hinge assembly (40). A first end portion (31) of the cover is connected to a first end portion (11) of the first rod. The cover may be sleeved on the hinge assembly. A first end portion (42, 43) of the hinge assembly is connected to the first end portion of the first rod, and a second end portion (45, 46) of the hinge assembly is connected to a first end portion (21) of the second rod. For example when the hinged foldable rod needs to be stored, the first rod can be rotated with respect to the second rod by means of the hinge assembly, wherein the hinge assembly is configured to exert a torque on the first rod, this torque being caused by friction.

IPC Classes  ?

• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated
• F16M 11/10 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only

Abstract

A metrological instrument digital verification method, i.e., a computer-implemented verification method for a metrological instrument 110, and a related system are provided. In the method, verification personnel 131 provide, through the metrological instrument 110 and/or a detection client 130, identity information to a metrological management organization 120. After a verification request is accepted, the metrological instrument 110 and/or the detection client 130 are/is used to display a verification step to the verification personnel 131, and record/records a real-time image when the verification personnel perform a test. Verification information is transmitted to the metrological management organization. The management platform obtains the verification information, and generates a digital verification certificate 40 if the verification information meets a verification requirement. The digital verification certificate includes built-in component information of the metrological instrument 110. According to the foregoing method and system, compliance and accuracy of a metrological verification process can be improved. The digital verification certificate is bound to a built-in component, in particular a built-in core component, of the metrological instrument, so that a certification range of the digital verification certificate is enlarged.

IPC Classes  ?

• G06F 21/44 - Program or device authentication
• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
• H04L 9/40 - Network security protocols

Abstract

These disclosures provide a filtering method and control apparatus for a load cell. The method includes: filtering, by using a plurality of filtering units, first weighing data obtained by the load cell to obtain a plurality of pieces of second weighing data, where the filtering units have different settling times. Obtaining a fluctuation index of each piece of second weighing data, and establishing a correspondence between a fluctuation index and a settling time of each filtering unit. Determining a target filtering unit based on the correspondence according to a weighing requirement, where a fluctuation index of the target filtering unit matches a target precision in the weighing requirement, and a settling time of the target filtering unit matches a target speed in the weighing requirement. The method and apparatus disclosed improves speed and user experience in a weighing process.

IPC Classes  ?

• G01G 23/10 - Means for damping oscillations, e.g. of weigh-beams by electric or magnetic means

Abstract

An integrated high-precision weighing module is provided which includes a scale pan, a lever, an internal calibration system, a bottom plate assembly, and a sensor main body. The scale pan is mounted on the lever, and the lever is connected to the sensor main body. The internal calibration system, the sensor main body and the lever are arranged transversely, and the internal calibration system and the sensor main body are respectively attached to the bottom plate assembly.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action

Abstract

These disclosures relate to a method for detecting and removing personnel interference while measuring volume of an object. An image of an object is obtained, a background information of the image is removed, and the image is converted into a binary image. An outline of the object is detected from the binary image. A determination is made whether the outline extends towards a boundary of the field of view. If the outline of the object does not extend to the boundary of the field of view, the volume of the object is measured. Otherwise, an extending part is removed from the outline using a morphological method, if removable. If the extending part is removed, the volume of the object is measured based on an outline of the object obtained after the extended part is removed, and a class 1 warning is issued. Otherwise, a class 2 warning is issued and the measurement is ended. This approach improves efficiency of the object volume measurement.

IPC Classes  ?

• G06T 7/194 - SegmentationEdge detection involving foreground-background segmentation
• G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness
• G06T 7/12 - Edge-based segmentation
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume

Abstract

A mechanical apparatus levelling mechanism has a base (10), an adjusting screw rod (20), an adjusting plate (30) and a support plate (40). The adjusting screw rod penetrates into the adjusting plate in an axial direction and is connected to the base. The adjusting plate is located on the base; the support plate is mounted at a top end of the adjusting screw rod and is located above the adjusting plate; and the adjusting plate rotates to drive the adjusting screw rod to rotate, such that the support plate is adjusted vertically. This simplifies the operation procedure, improving the assembly accuracy and improving the working efficiency. The method is simple to operate. These adjusting mechanisms are convenient to move and simple to adjust, are time-saving and labour-saving, and have adjustment dimensions that can be quantified. Moreover, the installation is simple, and the adjusting mechanisms themselves can be reused.

IPC Classes  ?

• F16M 7/00 - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or baseAttaching non-moving engine parts, e.g. cylinder blocks
• F16M 5/00 - Engine beds, i.e. means for supporting engines or machines on foundations
• G01G 21/28 - FramesHousings

Abstract

The present invention provides a digital load cell with redundancy design, the digital load cell including: at least one force measuring element that measures a load force applied to the digital load cell, where each force measuring element converts the load force into one analog signal; and one or more analog-to-digital conversion modules, where each force measuring element is connected to at least one analog-to-digital conversion module, and the analog-to-digital conversion module converts the analog signal into a digital signal. According to the digital load cell of the present invention, redundancy design is provided at least for both the force measuring element and the analog-to-digital conversion module, which can effectively ensure the proper operation of the digital load cell.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated

Abstract

A digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge. An analog-to-digital conversion circuit excites the strain bridge, and includes a plurality of input channels and an output terminal. The input channels receive feedback signals from the strain bridge, and the output terminal outputs the feedback signals after analog-to-digital conversion. A signal processor includes a load force calculation unit and a state information matrix calculation unit. The load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal, and calculates a load force value based on the differential voltage and the compensation function. The digital load cell and related weighing system; can provide comprehensive and effective real-time health state monitoring for the digital load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 3/147 - Circuits specially adapted therefor involving digital counting

Abstract

These disclosures provide a weight stability control method for a deadweight force standard machine. For each weight in a sequence until all weights are loaded: weight platform is relatively rapidly moved downwards from an initial position, lifting a first-stage weight by a weight disk, and starting to load the first-stage weight starts; the first-stage weight is displaced relatively slowly when the first-stage weight communicates with a second-stage weight via corresponding lifting components for the first time; after the first-stage weight is completely separated from the second-stage weight, relatively rapidly displacing the weight platform downwards again until a gap between the first-stage weight and the second-stage weight reaches half of a pre-set gap value. The method provides control over the stability of the weights, effectively solving the weight shaking problem and improving testing efficiency.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A hanging scale sensor apparatus and hanging scale are disclosed. The hanging scale sensor apparatus includes an adapter beam connected to one end of a bottom face of a weighing sensor with a support base is connected to the other end of the bottom face of the weighing sensor. The adapter beam and a support base are positioned directly below the weighing sensor; and a scale pan suspension structure is connected to the adapter beam for positioning the hanging scale sensor apparatus.

IPC Classes  ?

• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A load cell with a Roberval structure having an anti-offset function, and a weighing device are disclosed. The load cell includes strain detection elements mounted on an elastic element which includes a loading portion for receiving a load from a connector, a fixing portion for fixing the elastic element, a strain generation portion for converting the load into deformation, and a parallel guide beam for transferring the load and keeping the loading portion translational when loaded. The strain generation portion includes at least one hollow cavity body. The loading portion and the fixing portion are respectively located on left and right sides of the strain generation portion. The parallel guide beam is located at upper and lower portions of the strain generation portion A center of rotation and a geometric center of the strain generation portion coincide when the load cell with the Roberval structure is loaded.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans

Abstract

A method for real-time processing of a detection signal, wherein signal processing is respectively performed when a detection signal is converted from a high level to a low level or vice versa. A moment at which a level of the detection signal is converted is recorded as a start point. A status of the detection signal is then detected in real time at a current moment. A current time width is compared to a maximum interval width of pre-set interference signals, and signal levels are determined and recorded from the start point to the current moment. Using characteristics of different interference signals, anti-interference processing is performed by using a targeted edge positioning and width recognition method, so that the delay impact of filtering on signals is avoided, improving both the recognition precision of weighing data of a checkweigher and the overall performance of the checkweigher.

IPC Classes  ?

• H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference

Abstract

The present invention provides an automatic piston-gripping apparatus (100) and a pipette comprising the same. The automatic piston-gripping apparatus comprises a gripping mechanism (10), a holding shank (20), a first spring (30), and optionally a piston (40). The gripping mechanism (10) is arranged in the holding shank, (20) and the first spring (30) sleeves over the gripping mechanism (10) and is located between the gripping mechanism (10) and the holding shank (20). The piston-gripping apparatus (100) is configured for inserting a piston (40) from an end portion of the holding shank (20) that faces a collet (11) of the gripping mechanism (10) A locking ring (12) is arranged at a head of the collet (11). The end portion of the holding shank (20) is provided with a first limiting portion (21) for positioning the locking ring (12). The piston-gripping apparatus is configured for the collet (11) to extend out of the locking ring (12) when the locking ring (12) moves and/or moved to the first limiting portion (21) and to automatically grip the piston (40). The automatic piston-gripping apparatus (100) can quickly and adaptively grip the piston (40), and can produce a sound in the process of gripping the piston, this sound indicating a soon successful gripping, thereby avoiding a faulty operation by a user r.

IPC Classes  ?

• B01L 3/02 - BurettesPipettes

Abstract

The present invention relates to a method for determining the reliability of a weighing result, a computer-readable medium, and a related system. The method for determining the reliability of a weighing result includes: a step S1 of providing data comprising event data 3 and weighing data 4; a step S2 of training an Al classification algorithm using the data; and a step S3 of making inference about a weighing result 1. The method, the computer-readable medium, and the system 100 proposed by the present invention are able to determine whether a weighing system 101, 101', 101" operates normally and whether data displayed are reliable.

IPC Classes  ?

• G01G 23/06 - Means for damping oscillations, e.g. of weigh-beams

Abstract

Methods and systems for eccentric load error correction are disclosed. A plurality of weighing data sets for a weight having a mass value are obtained, where the weight is loaded at different positions on a weighing platform of a weighing device. Differences between each of the weighing data sets and the average value of the plurality of weighing data sets or the mass value of the weight are calculated. Sensor correction coefficients are calculated and updated when the maximum absolute value of the differences exceeds a pre-set threshold. The weighing data sets are updated. The above steps are repeated until the absolute values of all the differences are less than the pre-set threshold.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A method for configuring a calibration mechanism in a force sensor (100) has the steps of: coupling an end of the calibration lever (1071) to a loading end (102) of the force sensor; adjusting, in a no-load condition, the center of gravity (G0) of the unloaded calibration lever (1071), so that the center of gravity (G0) lies on a horizontal line (H) through the center of a calibration lever fulcrum (1031) at a fixed end (103) thereof; and adjusting, in a full-load condition, the center of gravity (G1) of the calibration lever (1071) loaded with the calibration weight (106), so that the center of gravity (G1) lies on the horizontal line (H) through the center of the calibration lever fulcrum. The calibration error caused by inclination in the force sensor is reduced by practice of this method.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention provides a hydraulic system micro-adjustment device and a tank calibration system comprising same. The hydraulic system micro-adjustment device comprises a base, a piston, a valve body, a valve core and a handle, characterized in that the valve body is internally provided with an inner cavity for receiving the valve core from an upper portion of the valve body, wherein the valve core is in threaded connection with the inner cavity; the piston is inserted into the inner cavity from a lower portion of the valve body, the piston abuts against the valve core, the lower portion of the valve body is mounted in the base and is in communication with oil passages in the base, and the handle is connected to a top of the valve core; and the valve core is movable along the inner cavity upon rotation of the handle thereby pushing the piston to move along the inner cavity, so as to change the volume of a cavity formed by the base, the valve body, and the piston. According to the present invention, the adjustment of pressure in a local range can be achieved, thereby reducing the number of times of pressurization to improve the calibration efficiency. The target pressure value can be reached quickly and stably, thereby reducing uncertainty and improving the calibration accuracy.

IPC Classes  ?

• F16K 31/60 - Handles

Abstract

The present invention relates to a tilt compensation apparatus and a tilt compensation method for a weighing system comprising a column-type load cell. The tilt compensation method includes: S1: performing tilt angle calibration and horizontal rotation angle calibration on the weighing system; S2: aligning the column-type load cell to a specified tilt angle and a specified horizontal rotation angle, and measuring a weight, a tilt angle, and a horizontal rotation angle under load; S3: calculating a weight compensation value based on the specified tilt angle and the specified horizontal rotation angle as well as the measured weight, tilt angle, and horizontal rotation angle; and S4: calculating an actual weighing weight based on an actual measured weight of the weighing system and the weight compensation value. According to the tilt compensation apparatus and the tilt compensation method therefor proposed in the present invention, accurate tilt compensation can be provided for the weighing system having a column-type load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention relates to a tilt compensation apparatus and a tilt compensation method for a weighing system comprising a column-type load cell. The tilt compensation method includes: S1: performing tilt angle calibration and horizontal rotation angle calibration on the weighing system; S2: aligning the column-type load cell to a specified tilt angle and a specified horizontal rotation angle, and measuring a weight, a tilt angle, and a horizontal rotation angle under load; S3: calculating a weight compensation value based on the specified tilt angle and the specified horizontal rotation angle as well as the measured weight, tilt angle, and horizontal rotation angle; and S4: calculating an actual weighing weight based on an actual measured weight of the weighing system and the weight compensation value. According to the tilt compensation apparatus and the tilt compensation method therefor proposed in the present invention, accurate tilt compensation can be provided for the weighing system having a column-type load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A discharge flow rate of a loss-in-weight scale is controlled by continuously changing control outputs to save the time necessary for data stabilization. A curve relating the discharge flow rate and the control output is obtained by using the functional relationship between the control output and time and the functional relationship between the material weight and time. The discharge flow rate can be precisely controlled by directly selecting or inputting a value of the control output, to achieve the objectives of direct controlling and of avoiding the time for data stabilization.

IPC Classes  ?

• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• G05D 7/06 - Control of flow characterised by the use of electric means
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

The present invention provides a U-shaped plate for a weighing module and a weighing module comprising same. The U-shaped plate comprising a first side surface and a second side surface and an upper end surface connecting the first side surface and the second side surface the first and the second side each comprising a bottom end and an upper portion together forming four corners of the U-shaped plate wherein said U-shaped plate is of an inverted U-shaped structure formed by bending a flat and straight metal sheet. A lower width of the U-shaped plate is greater than an upper width thereof. The U-shaped plate is further characterized by an opening for mounting the sensor. The opening extends from the bottom end of the first side surface to the upper portion of the second side surface via an upper end surface. Each of the four corners of the U-shaped plate is configured as a recessed structure According to the present invention, the U-shaped plate having a novel structure, a nice appearance and a reliable performance, when used with a weighing module, perfectly matches the sensor. The design of integrated molding overcomes the defects, realizes safety and practicability, improves competitiveness and provides solution that meets various requirements.

IPC Classes  ?

• G01G 21/28 - FramesHousings

Abstract

The present invention provides an integrated high-precision weighing module, comprising a scale pan (10), a lever (20), an internal calibration system (30), a bottom plate assembly (40),and a sensor main body (50). The scale pan (10) is mounted on the lever (20), and the lever (20) is connected to the sensor main body (50); wherein the internal calibration system (30), the sensor main body (50), and the lever (20) are arranged transversely, and the internal calibration system (30) and the sensor main body (50) are respectively attached to the bottom plate assembly (40). The weighing module of the present invention has less number of parts, smaller in size, and is easy to manufacture, and the internal calibration system and a weighing unit can be implemented with one lever. The weighing module has a great cost advantage over existing products and has additional features such as the internal calibration system, being highly dustproof and waterproof, easy to clean, and the weighing module can ensure long-term reliability of a product and is easy for customers to operate.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A key determination method for a metal key. The method comprises a step of determining whether values output by an electrical parameter converter on a metal key satisfy multiple levels of thresholds, and, a step of setting a press flag of the metal key according to multiple levels of thresholds; and after the metal key is released, determining whether a release flag is valid according to a press model, and if so, clearing the press flag that was previously set. Different press models and different thresholds are selected and configured by means of software, so that personalized choices are provided for respective metal keys, which effectively facilitates different operators in configuring a metal keyboard according to usage habits, thereby improving the operating efficiency. In addition, the setting of different thresholds effectively protects the operational details mean for the exclusive use of operators, thereby achieving the required confidentiality.

IPC Classes  ?

• G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form
• G06F 3/02 - Input arrangements using manually operated switches, e.g. using keyboards or dials

Abstract

The present invention relates to an apparatus and a method for compensating tilt. The method for compensating tilt comprises the steps of, S1: generating a tilt compensation model f (θ) for a weighing system on basis of a gravity decomposition model, which is a trigonometric function; S2: obtaining a plurality of calibration data sets based on a calibration performed on the weighing system in a level state and in a tilted state; S3: calculating correlation between the plurality of calibration data sets and the tilt compensation model f (θ); and S4: substituting a measured tilt angle θ into the tilt compensation model f (θ), to calculate a compensated weighing weight based on an uncompensated measurement weight output of the weighing system. The apparatus and the method for compensating tilt proposed in the present invention can provide accurate tilt compensation for a weighing system.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention provides a filtering method and a filtering control apparatus for a load cell. The filtering method includes: filtering, by using a plurality of filtering units, first weighing data obtained by the load cell, to obtain a plurality of pieces of second weighing data, where the plurality of filtering units have different settling times; obtaining a fluctuation index of each piece of second weighing data, and establishing a correspondence between a fluctuation index and a settling time of each filtering unit; and determining a target filtering unit based on the correspondence according to a weighing requirement, where a fluctuation index of the target filtering unit matches a target precision in the weighing requirement, and a settling time of the target filtering unit matches a target speed in the weighing requirement. The filtering method and the filtering control apparatus of the present invention can achieve fast and good user experience in a weighing process.

IPC Classes  ?

• G01G 23/10 - Means for damping oscillations, e.g. of weigh-beams by electric or magnetic means

Abstract

The present invention provides a dynamic modular checkweigher, comprising: a weighing and conveying matrix unit having a weighing and conveying surface composed of a plurality of weighing and conveying sub-units; a weighed object identification unit for identifying a weighed object and a coverage thereof by means of images or weights of the weighing and conveying sub-units; a weighed object conveying movement control unit for controlling arrangements of a plurality of weighed objects on the weighing and conveying matrix unit; a weighed object movement tracking unit for identifying a movement trajectory of a weighed object and creating a time sequence-based data set of movement state, movement position, and weighing signal from data of the weighing and conveying sub-units covered by the weighed object; and a weighed object weighing module unit for acquiring a weighed object data set created on the basis of the weighed object movement tracking unit. The various parts mentioned above are connected to a host system to form a star topology. According to the present invention, package separation functions such as unpacking, arranging, and pulling of a package separation system can be achieved, and mutual interferences in weighing objects by the checkweighercan be reduced.

IPC Classes  ?

• G01G 19/03 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion

Abstract

The present invention relates to a method for detecting and removing personnel interference while measuring volume of an object. The method includes the following steps of S1: obtaining an image of an object, removing a background information of the image, and converting the image into a binary image; S2: detecting an outline of the object from the binary image, and determining whether the outline of the object extends towards a boundary of the field of view; and if the outline of the object does not extend to the boundary of the field of view, performing S3;S3: measuring the volume of the object; else performing step S4; S4: removing an extending part from the outline of the object, using a morphological method; and if the extending part is removable, then performing S5; S5: measuring the volume of the object based on an outline of the object obtained after the extended part is removed, and issuing a class 1 warning; else performing step S6; S6: issuing a class 2 warning, and performing S7; S7: ending the measurement. The method of detecting and removing the personnel interference while measuring the volume of an object as disclosed in the present invention can effectively improve efficiency of the object volume measurement.

IPC Classes  ?

• G06T 7/13 - Edge detection
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G06T 7/194 - SegmentationEdge detection involving foreground-background segmentation

Abstract

The present invention relates to a volume measurement method and apparatus based on a depth camera, and a computer-readable medium. The method includes: acquiring a first depth image of a reference countertop, where the first depth image includes coordinate data and depth data of a plurality of pixels, and the reference countertop is adapted to the placement of a measured object; substituting the coordinate data and the depth data into at least two countertop empirical equations, to obtain at least two simulated images, wherein each of the countertop empirical equations is used to represent a height variation pattern of the reference countertop; calculating a correlation between each of the simulated images and the first depth image; using a simulated image with the highest correlation as a target image of the reference countertop; and obtaining a countertop height of the reference countertop based on the target image, wherein the countertop height is used to calculate a height of the measured object, and the height is used to calculate a volume of the measured object. The present invention improves the accuracy of object volume measurement.

IPC Classes  ?

• G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
• G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
• G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points

Abstract

The present invention provides a display device, and an electronic weighing instrument or a cash register comprising the same. The display device comprises a commercial high-definition liquid crystal display screen (10) having a viewing side and a mounting side, and further comprises a sheet metal support frame (10-2) on the mounting side; a metal-stud support plate (20) provided on the mounting side of the liquid crystal display screen (10); and at least one ground isolator (40) having a first terminal and a second terminal; wherein the ground isolator (40) is mounted between the sheet metal support frame (10-2) and the metal-stud support plate (20), and the first terminal (40B-3) of the ground isolator (40) is connected to the sheet metal support frame (10-2), and the second terminal (40B-4) of the ground isolator (40) is connected to the metal-stud support plate (20). According to the present invention, inserting a plurality of ground isolators (40) between the sheet metal support frame (10-2) and the metal-stud support plate (20) can eliminate a high-frequency eddy current induced on the sheet metal support frame, and alleviate spatial coupling interference of electrostatic discharge (ESD).

IPC Classes  ?

• G02F 1/1333 - Constructional arrangements
• G02F 1/1362 - Active matrix addressed cells

Abstract

The present invention relates to a method for associating a commodity and a picture thereof. The method of associating includes: step S1 of creating a commodity list; step S2 of selecting commodities in the commodity list one by one, and obtaining corresponding pictures based on the commodities selected; step S3 of generating a mapping association between the commodity list and the corresponding pictures which is achieved by changing a name of the corresponding picture to a number of the commodity selected or by changing an attribute of the corresponding picture to a number of the commodity selected; and step S4 of delivering the pictures and the mapping association to a retail device, so that the retail device displays the pictures corresponding to the commodity list, according to the mapping association generated. The method of associating a commodity and a picture thereof proposed in the present invention can avoid the work of renaming the pictures, and can effectively improve the efficiency of associating a commodity with a picture thereof.

IPC Classes  ?

• G06Q 30/06 - Buying, selling or leasing transactions
• G07F 9/02 - Devices for alarm or indication, e.g. when emptyAdvertising arrangements in coin-freed apparatus

Abstract

The present invention relates to a method of activating an electronic device. The activation method includes: step S1: converting, by the electronic device, its identification number into a first identifiable code, and displaying the first identifiable code; step S2: scanning the first identifiable code to obtain an identification code of the electronic device; step S3: sending the identification code to an authentication system, for generating an activation code; step S4: obtaining the activation code, converting the activation code into a second identifiable code, and displaying the second identifiable code; and step S5: scanning the second identifiable code using electronic device to obtain the activation code. According to the method proposed in the present invention, an activation code of the electronic device does not need to be manually entered, thereby shortening an activation period of the electronic device.

IPC Classes  ?

• G07B 15/06 - Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
• A61B 90/98 - Identification means for patients or instruments, e.g. tags using electromagnetic means, e.g. transponders
• G06F 21/34 - User authentication involving the use of external additional devices, e.g. dongles or smart cards
• G06Q 20/32 - Payment architectures, schemes or protocols characterised by the use of specific devices using wireless devices
• G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
• H04L 9/40 - Network security protocols
• H04W 4/50 - Service provisioning or reconfiguring
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04W 8/20 - Transfer of user or subscriber data
• H04W 12/30 - Security of mobile devicesSecurity of mobile applications

Abstract

The present invention provides a modular camera and a scale body comprising same. The modular camera comprises a camera module and a plurality of accessories, wherein the camera module comprises a camera, a camera housing and an anti-fouling lens; a camera fixing screw bore and an extended screw bore are formed in the camera housing; and the camera is fixed to the camera fixing screw bore and the extended screw bore and is interconnected with the plurality of accessories to form a consolidated structure. In the present invention, a basic module of the camera and plurality of accessories are combined to be conveniently mounted on different scale bodies, and other auxiliary accessories can be assembled by using adapters, thereby achieving cooperative use of various structures, and remarkably reducing research and development and production costs.

IPC Classes  ?

• F16M 13/04 - Other supports for positioning apparatus or articlesMeans for steadying hand-held apparatus or articles for supporting on, or holding steady relative to, a person, e.g. by chains

Abstract

The present invention provides a digital load cell with redundancy design, the digital load cell including: at least one force measuring element that measures a load force applied to the digital load cell, where each force measuring element converts the load force into one analog signal; and one or more analog-to-digital conversion modules, where each force measuring element is connected to at least one analog-to-digital conversion module, and the analog-to-digital conversion module converts the analog signal into a digital signal. According to the digital load cell of the present invention, redundancy design is provided at least for both the force measuring element and the analog-to-digital conversion module, which can effectively ensure the proper operation of the digital load cell.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention relates to a digital load cell and a weighing system. The digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge; an analog-to-digital conversion circuit that excites the strain bridge, where the analog-to-digital conversion circuit includes a plurality of input channels and an output terminal, the input channels are configured to receive feedback signals from the strain bridge, and the output terminal is configured to output the feedback signals after analog-to-digital conversion; and a signal processor including a load force calculation unit and a state information matrix calculation unit, where the load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal of the analog-to-digital conversion circuit, and calculates a load force value based on the differential voltage and the compensation function. The present invention proposes the digital load cell and the weighing system, which can provide comprehensive and effective real-time health state monitoring for the digital load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance

Abstract

The present invention provides a weight stability control method for a deadweight force standard machine, which method comprises the steps: S1, rapidly moving a weight platform downwards from an initial position, lifting a first-stage weight by a weight disk, and starting to load the first-stage weight starts; S2, starting to slowly displace the first-stage weight when the first-stage weight communicates with a second-stage weight via corresponding lifting components for the first time; S3, after the first-stage weight is completely separated from the second-stage weight, rapidly displacing the weight platform downwards again until a gap between the first-stage weight and the second-stage weight reaches half of a pre-set gap value; and S4, repeating steps S1-S3 in the loading process of the first-stage weight for the second-stage weight to the nth-stage weight in sequence until all the weights are loaded. The present invention can achieve control over the stability of the weights, effectively solve the weight shaking problem and improve the testing efficiency.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A hysteresis compensation method, in which a hysteresis error is calculated for an obtained weighing value by means of an ideal hysteresis error model, and an ideal compensation value is further calculated by means of an ideal hysteresis compensation model, wherein by using a proportional relationship between a system hysteresis error model established in hysteresis calibration and the ideal hysteresis error model, the ideal compensation value is corrected to a final compensation value. The method establishes a mapping relationship between the system's own hysteresis compensation and the ideal state hysteresis compensation, and realizes the transformation of a complicated hysteresis error compensation situation into an ideal hysteresis error compensation situation. The method not only has a good compensation effect for the hysteresis error compensation under ideal situations, but also can obtain an excellent hysteresis compensation effect under complicated hysteresis situations.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/37 - Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting

Abstract

A method of weighing using a scale (10) comprises the steps of: recognizing at least one of a plurality of objects placed within an object recognition area (A) of a platform (20) of the scale (10), and weighing the plurality of objects placed on the platform (20) of the scale (10) to determine a total weight of the plurality of objects. A weighing device (10) comprises the platform (20) configured as a plane, and utilizes the aforementioned weighing method. The method of weighing is advantageous in that it reduces the difficulty of object recognition using an algorithm by increasing the degree to which the object on the weighing platform fits the algorithm, reduces the complexity of the operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G06V 20/50 - Context or environment of the image
• G06V 10/70 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning

Abstract

A weighing method comprises the steps of: recognizing one or more objects to be detected on a first scale platform top (A) or within an object recognition area of the first scale platform top (A), and weighing the objects to be detected that are placed on a second scale platform top (B). A weighing system comprises at least two scales having scale platform tops utilizing the weighing method outlined above. The weighing method reduces the difficulty of algorithm recognition by increasing the degree to which the object on the weighting platform fits the algorithm, reduces the complexity of operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G01G 19/415 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only combined with recording means

Abstract

A dynamic weighing device has a plurality of weighing sensors that constitute a weighing sensor network via Ethernet. One of the weighing sensors is selected as a primary node, which performs time synchronization with the other nodes via a time synchronization protocol. Alternatively, the other nodes synchronize a time offset relative to the time of the primary node. Each weighing sensor continuously packetizes and sends a plurality of consecutive pieces of weighing information to a terminal apparatus. The terminal apparatus calculates a weighed weight result of the dynamic weighing device at the same moment, based on time information in the weighing information obtained through depacketization, In such a weighing sensor network, by means of the time synchronization, weighing data at each moment is accurate when the weighing data is processed on a terminal such as a meter, thereby improving the reliability of sampling.

IPC Classes  ?

• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
• H04J 3/06 - Synchronising arrangements
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04W 84/20 - Leader-follower arrangements
• H04W 84/22 - Self-organising networks, e.g. ad hoc networks or sensor networks with access to wired networks

Abstract

A telescoping electric pipette controller has a handle, a head end portion, an outer shell and a manual retainer. One end of the head end portion is arranged in an end portion of the handle in a penetrating manner, the outer shell is sheathed over an outer surface of the end portion of the handle, and one end portion of the manual retainer is rotatably connected to the outer shell. By means of opening or fastening the manual retainer, one end portion of the manual retainer is released outwards or pressed inwards against the head end portion, allowing extension and retraction of the head end portion relative to the handle. The extension and retraction, as well as the locking of part of a grip structure, are controlled by means of a switch, allowing the grip to change the length within a specific range.

IPC Classes  ?

• B01L 3/02 - BurettesPipettes
• G01N 35/10 - Devices for transferring samples to, in, or from, the analysis apparatus, e.g. suction devices, injection devices

Abstract

A hanging scale sensor apparatus (1) and a hanging scale (100) are provided. The hanging scale sensor apparatus (1) comprising a weighing sensor (10), an adapter beam (20), a support base (30) and a scale pan suspension structure (40).The adapter beam (20) is connected to one end of a bottom face of the weighing sensor (10). The support base (30) is connected to the other end of the bottom face of the weighing sensor (10). The adapter beam (20) and the support base (30) are positioned directly below the weighing sensor (10); and the scale pan suspension structure (40) is connected to the adapter beam (20) for positioning the hanging scale sensor apparatus (1).The hanging scale sensor apparatus (1) may be assembled separately, may be placed inside a scale body (50) according to requirements, and may further adjust the internal space of the scale body (50). The hanging scale sensor apparatus (1) has an adjustable installation position, and can realize two-way limitations, prevent overloading, and occupy small installation space. The hanging scale sensor apparatus (1) has a small overall size and thus has little influence on the structural layout of the scale body (50), and is suitable for the design of a super-thin scale body structure.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads

Abstract

The present invention provides a load cell with a Roberval structure having an anti-offset function, and a weighing device. The load cell comprises: an elastic element and a plurality of strain detection elements, the strain detection elements being mounted on the elastic element; the elastic element comprises: a loading portion for receiving a load from a connector, a fixing portion for fixing the elastic element, a strain generation portion for converting the load into deformation, and a parallel guide beam for transferring the load and keeping the loading portion translational when loaded; the strain generation portion is composed of at least one hollow cavity body, the loading portion and the fixing portion are respectively located on left and right sides of the strain generation portion, and the parallel guide beam is located at upper and lower portions of the strain generation portion; and the centre of rotation and the geometric centre of the strain generation portion coincide when the load cell with the Roberval structure is loaded. The load cell and the weighing device of the present invention can effectively compensate a non-linear offset error. By adjusting the stiffness of upper and lower beams of the elastic element, the non-linear offset error is compensated from the aspect of mechanical structure design.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans

Abstract

A method and apparatus are provided for detecting the status of a load cell. When method for detecting the status of a load cell is applied to a multi-point weighing system, the method first collects characteristic sensing data of load cells. It then calculates an anomaly in the characteristic sensing data. From this, it acquires and generates an output signal corresponding to the load cell information when the anomaly exists. The method and apparatus for detecting the status of a load cell can help customers accurately locate a faulty, or potentially faulty, sensor, so as to avoid a measurement error due to sensor problems and improve user satisfaction.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated

Abstract

Accurate weighing and measurement of fine materials is provided by a linear compensation apparatus and a weighing system. The linear compensation apparatus has a weight loading mechanism (10) with a bearing plate (11), a drive apparatus (12), and a measuring weight (13). The drive apparatus is mounted onto the bearing plate, the measuring weight is connected to the drive apparatus, and, by hoisting or lowering the measuring weight with the drive apparatus, loads from the bearing plate are adjusted. The linear compensation apparatus and the weighing system greatly reduce device costs and labor costs in a batching process, save time and effort, have no risk of cross-contamination, and achieve automated production operation.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 21/23 - Support or suspension of weighing platforms
• G01G 23/04 - Relieving mechanismsArrestment mechanisms for precision weighing apparatus

Abstract

A method is provided for measuring an energy efficiency of a quantitative weighing device. A data measurement part is formed by: recording a control time of fast charging, recording a control time of slow charging, recording a comparison prohibition time, and recording weighing data. A current device reliability parameter, a fast charging feed flow, and a slow charging feed flow are calculated, based on the comparison prohibition time and the control time of slow charging. The fastest feed time under a requirement of a target reliability parameter is calculated as the difference between the target reliability parameter and the calculated control reliability parameter. By using the method, application data, such as capability of a quantitative control device and energy efficiency of the quantitative weighing device, can be intuitively obtained. This facilitates commissioning, maintenance, and use of the quantitative weighing control device.

IPC Classes  ?

• G01G 13/04 - Means for automatically loading weigh-pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight
• B65B 57/20 - Applications of counting devices for controlling the feed of articles
• G01G 13/00 - Weighing apparatus with automatic feed or discharge for weighing-out batches of material
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention discloses a method and system for eccentric load error correction. The correction method comprises the steps of: obtaining a plurality of weighing data sets for a weight having a mass value, when the weight is loaded at different positions on a weighing platform of a weighing device; calculating differences between each of the weighing data sets and the average value of the plurality of weighing data sets or the mass value of the weight; calculating and updating sensor correction coefficients when the maximum absolute value of the differences exceeds a pre-set threshold; then updating the weighing data sets; and repeating the above steps until the absolute values of all the differences are less than the pre-set threshold. The correction system comprises a processing device and a communication device, wherein the processing device and the communication device perform the above correction method.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

The present invention discloses force sensor (100) and a method for configuring a calibration mechanism in such a force sensor (100), the method comprising the steps of: coupling an end of the calibration lever (1071) to a loading end (103) of the force sensor (100); adjusting, in a no-load condition, the gravity centre (G0) of the unloaded calibration lever (1071), so that the gravity centre (G0) is lying on a substantially horizontal line (H) which goes through the centre of a calibration lever fulcrum (1031) at a fixed end (103) of the force sensor (100); and adjusting, in a full-load condition, the gravity centre (G1) of the calibration lever (1071) loaded with the calibration weight (106), so that the gravity centre (G1) is lying on the substantially horizontal line (H) which goes through the centre of the calibration lever fulcrum (1031). By controlling the position of the lever and the position of the fulcrum in the force sensor to be approximately on the same horizontal line, the calibration error caused by the inclination in force sensor is reduced.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A method and device are provided for diagnosing a weighing system. In the method, the weighing system acquires an intrinsic parameter, a status parameter, and an operating parameter of various components of the weighing system, environmental parameters of the weighing system application, and communication data and interaction data among all the components. A first-level prompt is sent when the status of any of the components is abnormal, such that the system stops operating. A second-level prompt is sent when the status of each of the components is normal and the service life status of at least one of the components reaches a preset threshold. A third-level prompt is sent when the status of each of the components is normal and a system performance abnormality event is identified for the performance status of the system. A fourth-level prompt is sent when the status of each of the components is normal.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G05B 23/02 - Electric testing or monitoring

Abstract

A method and a system measure interfering influences on a checkweighing device. In the method, external interference data are obtained, as are interference data from the checkweighing device itself and interference data from an object being weighed, by calculating or mapping the weighing error data in the stationary state, in the operating state, and in the weighing state. The system for measuring the interference uses a meter and a processing apparatus. The meter and the processing apparatus perform an interference measurement and a compensation method. The amount of interference in the checkweighing device in each state and the amount of influence of the interference on the weighing performance is obtained, thereby facilitating the production, debugging, maintenance, and use of a checkweighing device.

IPC Classes  ?

• G01G 11/00 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers
• G01G 15/00 - Arrangements for check-weighing of materials dispensed into removable containers
• G01G 19/387 - Weighing apparatus or methods adapted for special purposes not provided for in groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

An integrated high-precision weighing module has a shell, an electromagnetic force sensor, a printed circuit board (PCB), a weighing pan component, a support ring, and an air baffle ring. The electromagnetic force sensor and the PCB are mounted in the shell. A bearing head of the electromagnetic force sensor extends upward from an upper end portion of the shell. The support ring sheathes the bearing head. The weighing pan component is mounted on the bearing head, with the support ring located between the weighing pan component and the shell. The air baffle ring is disposed around the weighing pan component and located on the support ring. A first airflow channel is formed among the shell, the support ring, and the air baffle ring. At least part of airflow in the shell flows to the outside through the first airflow channel.

IPC Classes  ?

• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action
• G01G 21/02 - Arrangements of bearings
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 21/28 - FramesHousings
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A method for controlling a discharge flow rate of a loss-in-weight scale is provided, wherein control outputs are continuously changed to save the time necessary for data stabilization, and a curve of relationship between the discharge flow rate and the control output is obtained by using the functional relationship between the control output and time and the functional relationship between the material weight and time. The discharge flow rate can be precisely controlled by directly selecting or inputting a value of the control output, to achieve the objectives of direct controlling and of avoiding the time for data stabilization.

IPC Classes  ?

• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge

Abstract

A mechanical apparatus levelling mechanism and a levelling method therefor. The mechanical apparatus levelling mechanism comprises a base (10), an adjusting screw rod (20), an adjusting plate (30) and a support plate (40), wherein the adjusting screw rod (20) penetrates into the adjusting plate (30) in an axial direction and is connected to the base (10); the adjusting plate (30) is located on the base (10); the support plate (40) is mounted at a top end of the adjusting screw rod (20) and is located above the adjusting plate (30); and the adjusting plate (30) rotates to drive the adjusting screw rod (20) to rotate, such that the support plate (40) is adjusted vertically. The mechanism achieves the purposes of simplifying the operation procedure, improving the assembly accuracy and improving the working efficiency. The method is simple to operate. These adjusting mechanisms are convenient to move and simple to adjust, are time-saving and labour-saving, and have adjustment dimensions that can be quantified. Moreover, the installation is simple, and the adjusting mechanisms themselves can be reused.

IPC Classes  ?

• F16M 7/00 - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or baseAttaching non-moving engine parts, e.g. cylinder blocks

Abstract

A weighing method has an automatic micro-calibration function. In the method, an automatic adjustment is performed by a self-calibration weighing module. When the result of the adjustment does not meet a requirement, an automatic calibration is performed by the self-calibration weighing module, followed by weighing fine formulation materials. In the weighing method, the self-calibration module is used to perform the automatic calibration function to weigh the fine formulation materials. This provides a high degree of automation, and greatly reduced cost in equipment and labor for a formulating process, saving on time and labor, and with no risk of cross-contamination.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 13/02 - Means for automatically loading weigh-pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism

Abstract

A high precision weighing system and weighing method has a weighing plate and weighing unit separation mechanism and a weight loading mechanism. The weighing plate and weighing unit separation mechanism controls separation of a weighing plate and a weighing unit, so that the weighing plate or the weighing plate and its carried material do not apply force to the weighing unit. The weight loading mechanism loads a weight onto the weighing unit or removes a weight from the weighing unit; the weighing system records a weighing value of the weighing unit during the action of the weighing plate and weighing unit separation mechanism and a sensitivity value during the action of the weight loading mechanism. The weighing system modifies the weighing value at the time of the most recent combination of the weighing plate and the weighing unit based on the recorded weighing and sensitivity values, achieving a high precision.

IPC Classes  ?

• G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A strain gauge (12, 21A, 21B, 25A, 25B, 31, 35, 41, 45) and method of manufacturing a strain gauge (12, 21A, 21B, 25A, 25B, 31, 41, 35, 45) against moisture penetration comprises or includes the step of producing a coated base or cover layer (14, 34, 44) by forming a moisture barrier coating (17) on the surface the latter.

IPC Classes  ?

• G01L 1/00 - Measuring force or stress, in general
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload

Abstract

A method for operating a measurement device using a blockchain. A blockchain system comprises a lease platform node or lease platform node device, a lessor client, and a lessee client. Existing state information about the measurement device is stored in the blockchain. The method can include receiving a lease order for the measurement device that is sent by a lessee client, sending a lease notification based on the measurement device to the lessor client to notify the lessor to send the measurement device to the lessee, receiving, after the lessee receives the measurement device sent by the lessor, a device state detection request sent by the lessee client or the measurement device, wherein the device state detection request comprises first current state information about the measurement device, and detecting whether the first current state information matches the existing state information, and if yes, creating a lease contract for the measurement device.

IPC Classes  ?

• G06Q 30/0645 - Rental transactionsLeasing transactions
• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
• G06Q 20/14 - Payment architectures specially adapted for billing systems
• G06Q 20/40 - Authorisation, e.g. identification of payer or payee, verification of customer or shop credentialsReview and approval of payers, e.g. check of credit lines or negative lists
• G06Q 50/18 - Legal services

Abstract

A calibration device is provided for a weighing system that has a tank with a plurality of support legs at a lower part thereof. The calibration device has at least one calibration module, a hydraulic system and a calibration terminal. An upper end of each calibration module is connected to an upper part of a corresponding support leg. A lower end of each calibration module is fixed to a foundation. A hose connects each calibration module to the hydraulic system for applying a force to the tank. The calibration terminal, connected to each calibration module, displays in real-time, the force applied to the tank. The calibration device can greatly improve the production efficiency, and in use, takes only two hours to complete the calibration, which is faster than the test weight and other calibration methods.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated

Abstract

A method and apparatus are disclosed for managing a measurement device based on a blockchain, which is applied to node devices in a blockchain network. The method can include obtaining device state data of the measurement device at various stages in the life cycle of the measurement device; constructing a target transaction based on the obtained device state data, and then sending the target transaction to other node devices in the blockchain network to perform consensus processing on the target transaction; and storing, when a consensus of the target transaction is reached, the target transaction into a distributed ledger of the blockchain network, wherein the target transaction stored in the distributed ledger of the blockchain network is used for life cycle management of the measurement device.

IPC Classes  ?

• G06F 16/23 - Updating
• G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

Abstract

A key determination method for a metal key. The method comprises a step of determining whether values output by an electrical parameter converter on a metal key satisfy multiple levels of thresholds, and, a step of setting a press flag of the metal key according to multiple levels of thresholds; and after the metal key is released, determining whether a release flag is valid according to a press model, and if so, clearing the press flag that was previously set. Different press models and different thresholds are selected and configured by means of software, so that personalized choices are provided for respective metal keys, which effectively facilitates different operators in configuring a metal keyboard according to usage habits, thereby improving the operating efficiency. In addition, the setting of different thresholds effectively protects the operational details meant for the exclusive use of operators, thereby achieving the required confidentiality.

IPC Classes  ?

• H03M 11/20 - Dynamic coding, i.e. by key scanning

Abstract

A method for adjusting parameters of a device with a weighing sensor collecting environmental parameter data of an environment where the device is currently located or environmental parameter data during execution of an application by the device. A zero compensation parameter is calculated and updated, based on the data collected. The method is applicable to a moisture analyzer and also to a vehicle scale. In the moisture analyzer, the method is triggered and executed in the analyzer, correcting the zero compensation data by using the environmental parameter data of an environment or environmental parameter data during execution of an application by the analyzer. Dynamic and real-time adjustment of a compensation parameter overcomes the problem that the scheme of pre-setting fixed parameters for zero compensation cannot deal with the complex zero drift encountered in actual environments.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 19/08 - Weighing apparatus or methods adapted for special purposes not provided for in groups for incorporation in vehicles
• G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder

Abstract

The present invention provides a weighing sensor assembly and a dynamic automatic checkweigher comprising same. The weighing sensor assembly comprises a sensor upper support plate, a separate housing, a weighing sensor, a sensor lower support plate and an electric motor cable, wherein an upper end of the separate housing is fixedly connected to the sensor upper support plate, a lower end of the separate housing is fixedly connected to the sensor lower support plate, and the weighing sensor is fixed in the separate housing; an upper portion of one end of the weighing sensor is connected to the sensor upper support plate, and a lower portion of the other end thereof is connected to the sensor lower support plate; and the electric motor cable penetrates into an upper portion of the separate housing and penetrates out of a lower portion thereof, the part of the electric motor cable located in the separate housing is a separate cable, and a gap exists between the separate cable and the weighing sensor and makes the two separated. According to the present invention, with the embedded housing structure design, the interference of environmental factors such as external dust and airflow on the sensor is reduced, and the level of protection of the sensor is improved.

IPC Classes  ?

• G01G 19/393 - Weighing apparatus or methods adapted for special purposes not provided for in groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value using two or more weighing units
• G01G 21/28 - FramesHousings
• G01G 21/30 - Means for preventing contamination by dust

Abstract

The present invention discloses a checkweigher comprising a conveying belt (1,1a)for conveying an object. The checkweigher comprises an object shape recognition apparatus for detecting and recognizing information about the shape of a contact surface between the object conveyed on the conveying belt (1,1a) of the checkweigher and the conveying belt (1,1a) and information about the position of the object on the conveying belt (1,1a). The checkweigher further comprises a calculation unit for querying or calculating a correction parameter with the information about the shape and the information about the position of the object on the conveying belt (1,1a), and correcting the weight of the object obtained by the checkweigher with the correction parameter. By means of the present invention, weighing data is compensated and corrected by recognizing the dimension of the object on the conveying belt(1,1a) and the position thereof on the conveying belt (1,1a), to remove impact of the detected object on dynamic weighing, thereby improving the weighing precision.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A hysteresis compensation method, in which a hysteresis error is calculated for an obtained weighing value by means of an ideal hysteresis error model, and an ideal compensation value is further calculated by means of an ideal hysteresis compensation model, wherein by using a proportional relationship between a system hysteresis error model established in hysteresis calibration and the ideal hysteresis error model, the ideal compensation value is corrected to a final compensation value. The method establishes a mapping relationship between the system's own hysteresis compensation and the ideal state hysteresis compensation, and realizes the transformation of a complicated hysteresis error compensation situation into an ideal hysteresis error compensation situation. The method not only has a good compensation effect for the hysteresis error compensation under ideal situations, but also can obtain an excellent hysteresis compensation effect under complicated hysteresis situations.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

An object recognition apparatus, system and method. The object recognition apparatus, comprising: a first image matching module, configured to perform comparison and screening on first image feature information in image feature information of each type of object and a first image feature of a target object; a counting module, configured to weigh and count the target objects one by one according to mass distribution information of each type of objects; a calculation module, configured to calculate, according to the mass distribution information of each type of objects and the corresponding weighing and counting data, a counting error allowed due to a statistical error of each type of objects; and a determination module, configured to perform screening by determining whether the weighing and counting data is within the range of the counting error allowed due to the statistical error of the corresponding type of objects.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A counting check device, a counting system and a method are disclosed. The counting check device, comprising: a processing unit for performing image recognition based counting on an image of objects being counted; a calculation unit for counting by weighing based on a total weight of the objects being counted and a pre-stored mass distribution information; and a determination unit for determining, based on the pre-stored mass distribution information, whether a count obtained in the image recognition based counting is within a count error range of the count obtained in the counting by weighing; if true, the count obtained in the image recognition based counting is determined to be the count of the objects; and if false, the processing unit performing the image recognition counting again. The counting check device, and a counting system and method can ensure a count result to be accurate.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A weighing method comprises the steps of: recognizing one or more objects to be detected on a first scale platform top (A) or within an object recognition area of the first scale platform top (A), and weighing the objects to be detected that are placed on a second scale platform top (B). A weighing system comprises at least two scales having scale platform tops utilizing the weighing method outlined above. The weighing method reduces the difficulty of algorithm recognition by increasing the degree to which the object on the weighting platform fits the algorithm, reduces the complexity of operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/40 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A method of weighing using a scale (10) comprises the steps of: recognizing at least one of a plurality of objects placed within an object recognition area (A) of a platform (20) of the scale (10), and weighing the plurality of objects placed on the platform (20) of the scale (10) to determine a total weight of the plurality of objects. A weighing device (10) comprises the platform (20) configured as a plane, and utilizes the aforementioned weighing method. The method of weighing is advantageous in that it reduces the difficulty of object recognition using an algorithm by increasing the degree to which the object on the weighing platform fits the algorithm, reduces the complexity of the operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/40 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A weighing sensor is provided for an electronic balance. A weighing unit of the weighing sensor has a load-receiving portion, a fixing portion, and parallel guiding members that connect the load-receiving and fixing portions A lever, with a first end connected to the load-receiving portion, is located between the parallel guiding members and the fixing portion. A lower portion of a photoelectric position limiting block is connected to the fixing portion, and an upper portion thereof has a limiting structure. A tail end portion of a second end of the lever is disposed in the limiting structure, limiting its deviation. The photoelectric position limiting block has a photoelectric position sensor and a stop structure for limiting deviation of the tail end portion.

IPC Classes  ?

• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action

Abstract

A device and a method for improving weighing reliability comprises a light source (11) arranged on a side surface of a frame of weighing equipment (1) and used for projecting light beams (13) to the outside of the weighing equipment (1). The device also comprises an image capture device (12) arranged on the side surface on which the light source (11) is arranged and the image capture device (12) is used for capturing a projection image of the light beams (13) on a projection surface. The device further comprises an image processor used for validating whether the projection image is incomplete and thereby determining whether an object to be weighed overlaps the ground surface or the frame of the weighing equipment (1). The device and the method for improving weighing reliability can improve the application range of an exceeding detection and reliability in the weighing process.

IPC Classes  ?

• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 21/28 - FramesHousings
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A weighing sensor and a lever are disclosed. The weighing sensor has a load-receiving portion, a fixing portion, and a parallel guiding portion connected to the load-receiving portion and the fixing portion. The parallel guiding portion has upper and lower parallel guiding units, separated from each other. The ends of the parallel guiding units are connected to the load-receiving portion and the fixing portion. The fixing portion has an extension located between the parallel guiding units. The extension is at a distance from both parallel guiding units and extends to the load-receiving portion. A gap is formed between the extension and the load-receiving portion; and the distance between the extension and the upper parallel guiding unit allows a lever to pass through. The weighing sensor has a simple structure, both the processing process and the assembly process are simplified, and the processing and assembly during production are facilitated.

IPC Classes  ?

• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans

Abstract

0) of the measured object are acquired. A first error (error1) caused by a weighing state according to the roll angle and the pitch angle is calculated. A second error (error2) caused by a weighing position according to the coordinates of the placement position, the roll angle (r) and the pitch angle (p) is also calculated. From these, a corrected weight (Wc) is determined.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A force sensor has a first end portion (1), a second end portion (2), a parallel-guiding mechanism (3), a beam (4), and a strain gauge (5). The parallel-guiding mechanism (3) connects the first end portion (1) to the second end portion (2). A main beam (43) of the beam has a flexible wall (435) and a rigid wall (432). A first connecting part (41) connects the flexible wall to the first end portion, and a second connecting part (42) connects the rigid wall to the second end portion. The strain gauge (5) is fixed to the flexible wall (435). The force sensor can measure a relatively small force.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance

Abstract

The present invention discloses a weighing and measuring system, comprising a weighing sensor network constituted by networking a plurality of weighing sensors, wherein in the weighing sensor network, each of subtasks into which a weighing task is split is assigned to each of weighing sensors in the weighing sensor network; and each of the weighing sensors respectively and independently executes the assigned subtask and exchanges task data through the weighing sensor network. The weighing sensors collaboratively process a weighing task, which no longer depends on an instrument or a computer, thereby reducing the cost of the whole system, and improving the tolerance level to environment. The collaborative processing mode also avoids the bottleneck of data communication information summarization.

IPC Classes  ?

• G01G 19/393 - Weighing apparatus or methods adapted for special purposes not provided for in groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value using two or more weighing units
• G01G 23/37 - Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting

Abstract

A calibration device for a weighing system is presented. The weighing system comprises a tank (10). A plurality of support legs (11) are provided at a lower part of the tank (10). The calibration device comprises at least one calibration module (20), a hydraulic system (30) and a calibration terminal (40). An upper end of the calibration module (20) is fixedly connected to an upper part of the corresponding support leg (11). A lower end of the calibration module (20) is fixed to the foundation. The calibration module (20) is connected via a hose to the hydraulic system (30) for applying a force to the tank (10). The calibration terminal (40) is connected to the calibration module (20) for displaying the force applied to the tank (10) in real-time. The calibration device for a weighing system can greatly improve the production efficiency. It takes only two hours to complete the calibration, which is far better than the test weight and other calibration methods. The uncertainty of the calibration process can reach 0.1% or better.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A calibration device for a weighing system is presented. The weighing system comprises a tank (10). A plurality of support legs (11) are provided at a lower part of the tank (10). The calibration device comprises at least one calibration module (20), a hydraulic system (30) and a calibration terminal (40). An upper end of the calibration module (20) is fixedly connected to an upper part of the corresponding support leg (11). A lower end of the calibration module (20) is fixed to the foundation. The calibration module (20) is connected via a hose to the hydraulic system (30) for applying a force to the tank (10). The calibration terminal (40) is connected to the calibration module (20) for displaying the force applied to the tank (10) in real-time. The calibration device for a weighing system can greatly improve the production efficiency. It takes only two hours to complete the calibration, which is far better than the test weight and other calibration methods. The uncertainty of the calibration process can reach 0.1% or better.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A method for dynamically managing power consumption, as well as a wake-up method, is disclosed for a wireless weighing platform. The method is initialized by setting both light and deep sleep period, entering a normal operating state, and starting light sleep timing. As long as no weighing operation is detected and the light sleep period has not expired, the method seeks to detect the weighing operation. If the light sleep period expires with no weighing operation, a light sleep state is entered, by turning off a communication function and starting timing for the deep sleep period. If no weighing is when the deep sleep period has expired, the wireless weighing platform enters a deep sleep state, by turning off power supply other than that for an acceleration sensor. If the acceleration sensor detects an effective vibration while in the deep sleep state, the normal operating state is restarted.

IPC Classes  ?

• G06F 1/32 - Means for saving power
• G06F 1/3246 - Power saving characterised by the action undertaken by software initiated power-off
• G06F 1/3287 - Power saving characterised by the action undertaken by switching off individual functional units in the computer system
• G06F 1/3206 - Monitoring of events, devices or parameters that trigger a change in power modality

Abstract

A high-capacity weighing module has a top plate weldment (10), a bottom plate weldment (30) and a pressure-bearing assembly (20) that is between the top and bottom plate weldments. Motion between the respective top and bottom plate weldments is restricted. This structure aids in easy installation and replacement of a sensor, and integrates the functions of anti-overturning and 360° inspection, and bottom stop. This makes the weighing module much more convenient to install than a conventional high-capacity module, and has a better safety function. The weighing module has advantage in terms of a simplified product structure, reduced cost of manufacture and maintenance, uncomplicated installation procedure, and higher safety and protection.

IPC Classes  ?

• G01G 3/12 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
• G01G 19/22 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them
• G01G 21/23 - Support or suspension of weighing platforms

Abstract

A strain gauge (12, 21A, 21B, 25A, 25B, 31, 35, 41, 45) and method of manufacturing a strain gauge (12, 21A, 21B, 25A, 25B, 31, 41, 35, 45) against moisture penetration comprises or includes the step of producing a coated base or cover layer (14, 34, 44) by forming a moisture barrier coating (17) on the surface the latter.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload

Abstract

A movable lifting device, comprising a lifting fixing device (10) and a moving device (20), wherein one end of the lifting fixing device (10) is connected to the moving device (20), and the other end thereof is connected to a cargo (30) to be moved; and rotational motion is converted to linear motion through free rotation of the lifting fixing device (10) so as to drive the lifting of the cargo (30) to be moved. The movable lifting device has a simple and flexible structure, is easy to operate, and has both movable and lifting functions. The device can be operated at any time and in any place, is applicable to a wide range of occasions, and can effectively reduce labor intensity; and the device saves on manpower and material resources, has low costs, and is easy to promote.

IPC Classes  ?

• B66D 3/00 - Portable or mobile lifting or hauling appliances
• G01G 21/23 - Support or suspension of weighing platforms
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A weighing device (1) has a load-bearing portion (10) that supports an object being weighed, a plurality of transition portions (20), and a separation portion (30). The transition portions are positioned on the separation portion, and the load-bearing portion is positioned on the transition portions, with the transition portions connected to the load-bearing portion and the separation portion. A plurality of weighing sensors (40) are provided at a bottom of the separation portion. A support portion (50) is below the weighing sensors to provide support therefor. The weighing device simplifies the loading condition of weighing sensors and isolates the horizontal mechanical deformation/distortion of the weighing load-bearing mechanism. It also reduces the influence of mechanical deformation/distortion, thereby improving the weighing performance and the effectiveness of the weighing device.

IPC Classes  ?

• G01G 21/23 - Support or suspension of weighing platforms

Abstract

An optical structure has a cavity (1) with an opening provided at one end and a first through hole or first gap (21) provided at the end opposite the opening. The cavity is further provided internally with a beam splitter or a dichroic mirror (4). A first LED (31) emits light into the cavity through the first through hole or the first gap, which passes directly passing through the beam splitter or dichroic mirror and exits from the opening of the cavity A second LED (32) emits light into the cavity through a second through hole or second gap (22) in a side of the cavity, which is reflected by the beam splitter or dichroic mirror. It is then fused with the light emitted by the first LED. The light emitted by the respective LEDs have an identical optical path length to the beam splitter or the dichroic mirror.

IPC Classes  ?

• G02B 27/14 - Beam splitting or combining systems operating by reflection only

Abstract

A high precision weighing system and weighing method, a thermo-gravimetric analyser and a storage medium, the weighing system comprising a weighing plate (5) and a separation mechanism (2) and a weight loading mechanism (3); wherein the separation mechanism (2) controls the separation of a weighing plate (5) and a weighing unit (l), and the weight loading mechanism (3) loads a weight onto the weighing unit (l) or removes a weight from the weighing unit (l); the weighing system records a weighing value of the weighing unit (l) during the action of the weighing plate (5) and separation mechanism (2) and a sensitivity during the action of the weight loading mechanism (3); and the weighing system modifies the weighing value at the time of the most recent combination of the weighing plate (5) and the weighing unit (l) based on the recorded weighing value and sensitivity.

IPC Classes  ?

• G01N 5/00 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid

Abstract

An online parameter adjustment weighing method and system and a storage medium, the online parameter adjustment weighing method is used for parameter adjustment when a weighing application is online, comprising: triggering and calling an adjustment procedure, the adjustment procedure comprises: collecting feature data of a weighing system; generating and updating parameters of the weighing system based on the feature data. The online parameter adjustment weighing system comprises a weighing application and a processor, the weighing application is in an online state, and the processor, after receiving a trigger signal, collects the feature data of the weighing system, and generates and updates parameters of the weighing system from the feature data. The method and the system can ensure the original temperature, creep and hysteresis performance of the weighing system or a weighing load cell even in a changing environment, thereby realizing high-precision measurements.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A weighing sensor (1) comprises a load-receiving portion (11), a fixing portion (12) and a parallel guiding portion (13) connected to the load-receiving portion (11) and the fixing portion (12), wherein the parallel guiding portion (13) comprises an upper parallel guiding unit (131) and a lower parallel guiding unit (132) which are separated from each other, and two ends of the upper parallel guiding unit (131) and the lower parallel guiding unit (132) are respectively connected to the load-receiving portion (11) and the fixing portion (12), an extension (122) of the fixing portion (12) is located between the upper parallel guiding unit (131) and the lower parallel guiding unit (132), is provided at a distance from both the upper parallel guiding unit (131) and the lower parallel guiding (132) and extends to the load-receiving portion (11), and a gap is formed between the extension (122) and the load-receiving portion (11), and the distance between the extension (122) and the upper parallel guiding unit (131) is able to allow a lever (2) to pass through. A lever thereof is also disclosed. The weighting sensor (1) has a simple structure, both the processing process and the assembly process are simplified, and the processing and assembly during production are facilitated.

IPC Classes  ?

• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans
• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action

Abstract

A weighing sensor (10) used in an electronic balance comprises a weighing unit (11), which comprising a load-receiving portion (111), a fixing portion (112) and parallel guiding members (113) for connecting the load-receiving portion (111) and the fixing portion (112) together; a lever (12), wherein one end of the lever (12) is connected to the load-receiving portion (112), and the lever (12) is disposed between the parallel guiding members (113) and the fixing portion (112); and a photoelectric position limiting block (14), wherein a lower portion of the photoelectric position limiting block (14) is connected to the fixing portion (112), an upper portion of the photoelectric position limiting block (14) is provided with a limiting structure (141), and a tail end portion of the other end of the lever (12) is disposed in the limiting structure (141) to limit a deviation of the tail end portion of the other end of the lever (12). A photoelectric position sensor and a stop structure for preventing the tail portion of the lever (12) from being deviated to a relatively deviation are both provided on the photoelectric position limiting block (14) to form an integral structure, and such a weighing sensor has the advantages of a simple structure, convenient to assemble, low cost, etc. An electronic balance comprising the weighing sensor (10) is also provided.

IPC Classes  ?

• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action

Abstract

0,00,0cc) according to error 1 and error 2.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus