A method of monitoring a conveyor belt state, the method including the steps of: (a) monitoring the acoustic emissions from a conveyor belt using an optical waveguide interrogator, the optical waveguide interrogator outputting a series of data bins representing the temporal evolution of the acoustic emissions received along the optical waveguide; and (b) utilizing the temporal evolution of the acoustic emissions of adjacent data bins to detect anomalies in the conveyor belt state.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
An underground wireless transmission system including: a sensor for sensing the underground environment and producing a corresponding data value; a data value transmission unit for transmitting the data value to the surface, the transmission unit providing an encoded low frequency magnetic oscillating field, modulated with the data value; a surface receiver unit including a magnetic sensor for sensing the encoded low frequency magnetic oscillating field and demodulating the data value from the field; and a surface control unit connected to the surface receiver unit for collation of the data values from one or more surface control units.
E21B 47/125 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using earth as an electrical conductor
G01V 3/34 - Transmitting data to recording or processing apparatusRecording data
H04B 1/713 - Spread spectrum techniques using frequency hopping
A carbon fiber rock bolt including: an outer carbon fiber rope including a series of tow fibers; and an inner core material. As the tension on the rock bolt increases beyond a predetermined limit, the inner core material undergoes a spatial compression, whilst the angle of twist in the carbon fiber rope strands decreases, resulting in extension of the carbon fiber rock bolt, replicating the ductility seen in steel rock bolts.
A method of monitoring a conveyor belt state, the method comprising the steps of: (a) monitoring the acoustic emissions from a conveyor belt using an optical waveguide interrogator, the optical waveguide interrogator outputting a series of data bins representing the temporal evolution of the acoustic emissions received along the optical waveguide; and (b) utilising the temporal evolution of the acoustic emissions of adjacent data bins to detect anomalies in the conveyor belt state.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
A method of monitoring a conveyor belt state, the method comprising the steps of: (a) monitoring the acoustic emissions from a conveyor belt using an optical waveguide interrogator, the optical waveguide interrogator outputting a series of data bins representing the temporal evolution of the acoustic emissions received along the optical waveguide; and (b) utilising the temporal evolution of the acoustic emissions of adjacent data bins to detect anomalies in the conveyor belt state.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
A carbon fibre rock bolt including: an outer carbon fibre rope comprising a series of tow fibres; an inner core material; and such that, as the tension on the rock bolt increases beyond a predetermined limit, the inner core material undergoes a spatial compression, whilst the angle of twist in the carbon fibre rope strands decreases resulting in extension of the carbon fibre rock bolt, replicating the ductility seen in steel rock bolts.
The present invention provides an explosive composition comprising hydrogen peroxide, fuel and one or more density stabilisers. The present invention also provides methods for preparing the compositions and method of using the compositions.
The present invention provides an explosive composition comprising hydrogen peroxide, fuel and one or more density stabilisers. The present invention also provides methods for preparing the compositions and method of using the compositions.
C06B 43/00 - Compositions characterised by explosive or thermic constituents not provided for in groups
C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
C06B 47/14 - Compositions in which the components are separately stored until the moment of burning or explosion, e.g. "Sprengel"-type explosivesSuspensions of solid component in a normally non-explosive liquid phase, including a thickened aqueous phase comprising a solid component and an aqueous phase
9.
EXPLOSIVES BASED ON HYDROGEN PEROXIDE WITH IMPROVED SLEEP TIME
The present invention provides an explosive composition comprising hydrogen peroxide, fuel and one or more density stabilisers. The present invention also provides methods for preparing the compositions and method of using the compositions. 5
C06B 43/00 - Compositions characterised by explosive or thermic constituents not provided for in groups
C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
C06B 47/14 - Compositions in which the components are separately stored until the moment of burning or explosion, e.g. "Sprengel"-type explosivesSuspensions of solid component in a normally non-explosive liquid phase, including a thickened aqueous phase comprising a solid component and an aqueous phase
C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
A method of measuring the state or condition of spatially spaced apart machine parts subject to wear and emitting an acoustic signature. The method includes: (a) optically sensing the acoustic properties of the machine parts subject to wear, and deriving sensed signals there from, (b) dividing the sensed signals into a first series of corresponding spatial segments along the spaced apart machine parts and, for each spatial segment, dividing the sensed signal into a temporal segment recording the acoustic properties for the spatial segment over an extended time period; (c) dividing each temporal segment into a series of sub-segments and frequency domain transforming the sub-segments into corresponding frequency domain sub-segments; (d) combining the frequency domain sub-segments within a spatial segment, to produce a corresponding lower noise level combined frequency domain sub segment; and (e) determining the fundamental frequency of the emitted acoustic signatures present in the combined frequency domain sub segment, and associated harmonics.
A system for handling 3 dimensional spatial information, the system including: a specialised application layer for the production of visual interactive applications associated with the 3 dimensional spatial information; a generic foundation client layer providing 3 dimensional spatial information interrogation routines, including a message passing interface; and a voxel server for interconnected to said generic foundation client via said message passing interface for the storage of 3 dimensional spatial information as a voxel data base.
A method of measuring the state or condition of a plurality of spatially spaced apart machine parts subject to wear and emitting an acoustic signature, the method including the steps of: (a) optically sensing the acoustic properties of the plurality of machine parts subject to wear, and deriving sensed signals there from, (b) dividing the sensed signals into a first series of corresponding spatial segments along the spaced apart machine parts and, for each spatial segment, dividing the sensed signal into a temporal segment recording the acoustic properties for the spatial segment over an extended time period; (c) dividing each temporal segment into a series of sub-segments and frequency domain transforming the sub-segments into corresponding frequency domain sub-segments; (d) combining the frequency domain sub-segments within a spatial segment, to produce a corresponding lower noise level combined frequency domain sub segment; and (e) determining the fundamental frequency of the emitted acoustic signatures present in the combined frequency domain sub segment, and associated harmonics.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
A method of measuring the state or condition of a plurality of spatially spaced apart machine parts subject to wear and emitting an acoustic signature, the method including the steps of: (a) optically sensing the acoustic properties of the plurality of machine parts subject to wear, and deriving sensed signals there from, (b) dividing the sensed signals into a first series of corresponding spatial segments along the spaced apart machine parts and, for each spatial segment, dividing the sensed signal into a temporal segment recording the acoustic properties for the spatial segment over an extended time period; (c) dividing each temporal segment into a series of sub-segments and frequency domain transforming the sub-segments into corresponding frequency domain sub-segments; (d) combining the frequency domain sub-segments within a spatial segment, to produce a corresponding lower noise level combined frequency domain sub segment; and (e) determining the fundamental frequency of the emitted acoustic signatures present in the combined frequency domain sub segment, and associated harmonics.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G06F 17/14 - Fourier, Walsh or analogous domain transformations
The present invention provides an explosive composition comprising from about 2 to about 25 % w/w hydrogen peroxide, from greater than 0 and up to about 90 % w/w of one or more of other oxidisers. The present invention also provides a method of 5 preparing an explosive composition and use of the explosive composition of the invention to break and move ground, such as in mining operations.
The present invention provides an explosive composition comprising from about 2 to about 25 % w/w hydrogen peroxide, from greater than 0 and up to about 90 % w/w of one or more of other oxidisers. The present invention also provides a method of 5 preparing an explosive composition and use of the explosive composition of the invention to break and move ground, such as in mining operations.
A method of determining the location of a candidate object in an environment, the method including the steps of: (a) capturing a 3D point cloud scan of the object and its surrounds; (b) forming a surface geometry model of the candidate object, (c) forming a range hypothesis test comparing an expected range from the geometry model of the candidate object in comparison with the measured range of points in the Lidar point cloud scan and deriving an error measure there between; (d) testing the range hypothesis for a series of expected locations for the surface geometry model of the candidate object and determining a likely lowest error measure.
A method and system for detecting electrically conductive objects such as tramp metal embedded in a load of mineral ore/earth within a detection space of an earth moving receptacle. A magnetic signal pulse is projected into a detection space of the receptacle by an antennae loop surrounding the detection space. The magnetic response of the system is monitored and analyzed to determine the presence or absence of electrically conductive objects in the loose material within the detection space.
G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
18.
SYSTEM AND METHOD FOR MONITORING EARTH COMPOSITION WHILE DRILLING BOREHOLES
A method of monitoring earth composition surrounding a drill bit (6) mounted on a drill-shaft (5) during drilling of a borehole. The method include monitoring the electrical resistance through the earth between an earth contacting down-hole electrode (8) at or adjacent the distal end of the drill-shaft and second electrode (9) located at a position remote from the first electrode including at a surface location adjacent the drill head or in an adjacent borehole. The invention includes a system and a drill rig for performing the method. Figure 1
E21B 47/125 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using earth as an electrical conductor
G01V 3/20 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with propagation of electric current
G01V 3/34 - Transmitting data to recording or processing apparatusRecording data
G01V 3/22 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with propagation of electric current using DC
19.
METHOD AND SYSTEM FOR THE DETECTION OF CONDUCTIVE OBJECTS
A method and system for detecting electrically conductive objects such as tramp metal embedded in a load of mineral ore / earth within a detection space of an earth moving receptacle (5). A magnetic signal pulse is projected into a detection space of the receptacle by an antennae loop (12) surrounding the detection space. The magnetic response of the system is monitored and analysed to determine the presence or absence of electrically conductive objects in the loose material within the detection space.
G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01N 27/72 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
20.
METHOD AND SYSTEM FOR THE DETECTION OF CONDUCTIVE OBJECTS
A method and system for detecting electrically conductive objects such as tramp metal embedded in a load of mineral ore / earth within a detection space of an earth moving receptacle (5). A magnetic signal pulse is projected into a detection space of the receptacle by an antennae loop (12) surrounding the detection space. The magnetic response of the system is monitored and analysed to determine the presence or absence of electrically conductive objects in the loose material within the detection space.
G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
G01N 27/72 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
An explosive composition comprising hydrogen peroxide and a sensitiser, wherein the sensitiser comprises a compressible material having one or more gas-filled voids and/or bubbles of gas. The sensitiser is included in a detonation-sensitive concentration, and the explosive composition is preferably adapted to retain the sensitiser in a substantially homogenous dispersion throughout. The invention also relates to a method of preparing an explosive composition comprising combining hydrogen peroxide and a sensitiser, wherein the sensitiser comprises a compressible material and/or bubbles of gas, and use of said explosive composition.
An explosive composition comprising hydrogen peroxide and a sensitiser, wherein the sensitiser comprises a compressible material having one or more gas-filled voids and/or bubbles of gas. The sensitiser is included in a detonation-sensitive concentration, and the explosive composition is preferably adapted to retain the sensitiser in a substantially homogenous dispersion throughout. The invention also relates to a method of preparing an explosive composition comprising combining hydrogen peroxide and a sensitiser, wherein the sensitiser comprises a compressible material and/or bubbles of gas, and use of said explosive composition.
The invention provides a method and apparatus for electronically testing the safety of sources of energy such as electrical circuits, in explosive atmospheres such as high risk mining situations, using an electronic spark tester (EST) in place of the known mechanical spark test apparatus (STA). The EST typically uses an analogue subsystem (5) and a digital subsystem (6) connected by a digital to analogue converter (7) and an analogue to digital connector (8) to apply a simulated spark load to the energy source and measure the time varying current response to that load.
G01R 27/30 - Measuring attenuation, gain, phase shift, or derived characteristics of electric four-pole networks, i.e. two-port networksMeasuring transient response with provision for recording characteristics, e.g. by plotting Nyquist diagram
H02H 1/00 - Details of emergency protective circuit arrangements
A fluid drilling head of the type adapted to cut a bore hole in rock by the rotation of a swivel assembly (5) within a body (1) typically has high pressure fluid nozzles providing cutting and reaming jets at the leading end (7) with the reaming jets angled to provide reaction forces to rotate the swivel assembly (5). The invention provides a positive displacement fluid driven motor (3) coupled to the swivel assembly (5) to control the rotational speed of the swivel assembly by restricting fluid flow to the motor through a metering nozzle (8).
A fluid cutting head (8) of the type having a plurality of nozzles in a rotatable nozzle assembly (9) for cutting a bore hole in rock, has nozzles being arranged to be supplied with high pressure drilling fluid, forming jets positioned to cut adjacent rock. The nozzles include one or more generally axially facing pilot nozzles (1 and 2) and one or more generally radially facing reaming nozzles (3, 4, 5 and 6), at least the pilot nozzles being characterised by a non-tapering outlet section such that the jet issuing therefrom is of substantially constant cross-section in a zone immediately adjacent the outlet section. The pilot nozzles are located in a leading part (26) of the rotatable nozzle assembly (9), having a minimised diameter, while the reaming nozzles are located in the following part (27) of the rotatable nozzle assembly (9), formed in a step-wise fashion to keep the reaming nozzles close to the rock face.
A fluid drilling head (1) for drilling a bore hole through rock, the fluid drilling head having a rotatable nozzle assembly (2) incorporating a plurality of nozzles (3, 4, 7, 8 and 9) arranged to form fluid jets (5, 6, 10, 11, 12) when provided with a supply of drilling fluid under pressure. The fluid jets include pilot jets (5, 6) directed in the general direction of movement of the drilling head and reaming jets (10, 11, 12) directed generally radially and arranged to enlarge the initial hole formed by the pilot jets. A gauging ring (13) is provided, located behind the cutting head and sized to the intended diameter of the bore hole, the gauging ring being arranged to slide axially relative to the rotating cutting head between a rearward position where the reaming jets are exposed, and a forward position where some or all of the reaming jets are shrouded by the gauging ring, and inhibited from enlarging the diameter of the bore hole.
A method of implementing an optimal avoidance filter for interposing between a human operator issued movement commands and a corresponding machine control system of a movable machine, for the avoidance of collisions with objects, the method comprising: (a) inputting a detailed representation of objects in the vicinity of the movable machine; (b) formulating a hierarchical set of bounding boxes around the objects, the hierarchical set including refinement details depending on the current positional state of the movable machine, with objects closer to the machine having higher levels of refinement details; (c) utilising the resultant hierarchical set as a set of constraints for a mixed integer optimisation problem to determine any alterations to the issued movement commands so as to avoid collisions with any objects.
The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic beacon 1 into an ore body 22 and generating an alternating magnetic signal with the beacon 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the beacon 1 thereby determining a position of the beacon. Successive recordings of the position of the magnetic beacon are taken as it moves along with the ore as it “caves”. In this way, flow patterns of the ore may be revealed.
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
29.
Method for position-calibration of a digging assembly for electric mining shovels
The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.
The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.
E02F 3/43 - Control of dipper or bucket positionControl of sequence of drive operations
G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
An apparatus for measuring scalp potential is disclosed, which comprises a plurality of sensors and a pre-amplifier coupled to these sensors. The sensors are adapted to measure a raw scalp potential measurement though a hair and air interface, and may be considered as a difference, reference or common measurement. The interface presents a high and variable source impedance coupling to the scalp. The pre-amplifier is adapted to have an input impedance significantly higher than that presented by the source interface, and receives the raw scalp potential measurement to produce a pre-amplified scalp potential measurement.
The present invention provides an energy absorbing accessory (1) for a rock bolt (2) having a longitudinal bolt shaft (3), the accessory including: a substantially tubular body (4) having a tube side wall (5) and a tube axis (6); a pair of apertures (7, 8) in the side wall (5), whereby in use the bolt shaft (3) extends through the apertures (7, 8) substantially transverse of the tube axis (6). The present invention also provides a rock bolt assembly (11) including the energy absorbing accessory (1), and a related method of installing a rock bolt with the energy absorbing accessory (1).
A rigging configuration for a dragline bucket (8) uses an independently controllable first hoist rope (9) and second hoist rope (10) connected to the front of the bucket at (19) and the rear of the bucket at (18) respectively. The second hoist rope (10) passes over a pulley (17) mounted between the first hoist rope (9) and a bridle (20) extending to the front of the bucket at (19). Differential movement of the first and second hoist ropes enables accurate control of the attitude of the bucket over all modes of dragline operation while allowing the hoist ropes (9, 10) to be entrained over side by side boom point sheaves in a conventional dragline boom construction.
E02F 3/47 - DredgersSoil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes with grab buckets
The present invention uses an Oscillating Disc Cutter (ODC) in a controlled manner to cut rock for assay purposes. The ODC (1) is mounted in an elongate guide frame typically in the form of an open box channel (2). The ODC is located on a carriage (3), the carriage itself mounted on guide rails (4) within the channel (2). The apparatus includes drive means operable to drive the carriage (3) in a rectilinear manner along the rails (4) such that the rails (4) define a cutting path. The ODC cuts a groove of controlled width and depth in a rock face, yielding rock chips that can be used for accurate assay of the face.
E21C 25/16 - Machines slitting solely by one or more rotating saws, cutting discs, or wheels
E21C 27/10 - Machines which completely free the mineral from the seam by both slitting and breaking-down
E21C 27/12 - Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
A personal emergency communicator (1) able to be readily carried by an underground miner, generates a signal transmitted through the ground via a ground antenna where it can be intercepted and received by a through the ground receiver equipped with an equivalent antenna. In one form, the ground antenna comprises an earth current antenna provided by ground engagement spikes (6) receiving the signal from the communicator (1) via wires (5). The signal is preferably digitally generated from a keypad (3), shown in a screen (4), and the device may be powered by a battery or a crank and generator assembly (2). In an alterative form, the ground antennae are provided in the form of a loop antennae.
An underground mine communication system using underground mesh nodes (4 and 5) connected by mesh communication paths (6) which are typically conventional wire line or line of sight wireless communication paths, is connected to a number of higher level receiver stations (7) in locations corresponding to the nodes (4) by way of through the ground wireless communication. The through the ground wireless communication may be implemented by way of magnetic loop antennae at corresponding locations (4) and (7) or by way of earth current antennae. The system provides numerous redundant pathways in the mesh, allowing communication to continue even when various mesh communication paths (6) are disrupted or destroyed by emergency situations.
H04B 1/38 - Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic transponder 1 into the ore body 12 and generating an alternating magnetic signal with the transponder 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the transponder 1 thereby determining the position of the transponder. Successive recordings of the position of the magnetic transponder are taken as it moves along with the ore as it 'caves'. In this way, the flow patterns of the ore may be revealed.
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
G01V 3/26 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic beacon 1 into the ore body 12 and generating an alternating magnetic signal with the beacon 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the beacon 1 thereby determining the position of the beacon. Successive recordings of the position of the magnetic beacon are taken as it moves along with the ore as it "caves". In this way, the flow patterns of the ore may be revealed.
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
G01V 3/26 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
Described herein are systems and method for reducing the probability of a collision between a first object, whose trajectory is substantially controlled by an operator input command, and a second object. In one embodiment such a method includes the steps of receiving an operator input command indicative of first control data; generating model data indicative of a virtual construct of the physical environment proximal the first object; processing the first control data to predict future dynamics of the first object in the environment; determining whether, on the basis of the predicted dynamics and the model data, the first object is predicted to collide with a second object in the environment; defining second control data for which the first object is not predicted to collide with the second object in the environment; and providing the second control data to a controller coupled to the first object such that the first object is controlled in accordance with the second control data for substantially avoiding the collision of the first object with the second object. In some embodiments, such systems or methods are implemented in respect of heavy machinery. For example, in one embodiment the first object is a shovel component of a shovel machine, and the second object might be another part of the machine (such as a dipper) or an object distinct from the machine.
B60K 31/00 - Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 7/22 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle
B60K 31/04 - Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
B60T 7/16 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle
A method of payload estimation of weight bearing machinery, the method comprising the steps of: (a) creating a series of Kalman filter approximations to the weight bearing machinery for different levels of payload; (b) determining from the series an approximation to the current operating characteristics of the digger; (c) utilising the parameters derived from the step (b) determine an estimated payload of the weight bearing machinery.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
AJ LUCAS COAL TECHNOLOGIES PTY LIMITED (Australia)
Inventor
Meyer, Timothy, Gregory, Hamilton
Macdonald, Duncan
Abstract
A drilling rig for drilling an underground borehole (5) into a seam (4) uses coiled metal tubing (8) fed by a tractor unit (11) from a drum (7) to provide a thrust force to a drilling head. The drilling head has a bent-sub assembly giving an angle of deviation which is controlled by rotating the coiled metal tubing in the borehole by way of rotation of the drum (7) in the frame (12) about the axis of the tube in the borehole (5).
A method of surveying drill holes, typically for use in underground mining situations where the holes are bored using a top hammer drill rig (10), utilises a survey tool located adjacent the drill bit (1) which is used to log position readings as the drill string is withdrawn from the hole after the drilling operation. In this manner, it is possible to log the actual hole bored by the drill string (3) in real time as the drilling operation proceeds, and show deviation from intended hole positions (5) or (6). The survey tool typically includes an inertial survey package, a power source, and a data logger with the survey package selected from the group comprising commercially known inertial known survey packages, for superior characteristics of resistance to vibration and impact. The survey tool is maintained in a sleeping mode while drilling is undertaken, and activated to provide position data as the drill string is progressively withdrawn from the actual hole path (3).
patents
