Abstract

The present invention relates to a system and method for passive optical monitoring of the concentration of multiple gases and/or multiple parameters at multiple points for obtaining and monitoring the methane concentration in offshore platforms and onshore structures, and also in the fields of mining, landfills and other industrial sectors. The system consists in the sending, by a remote fibre optic unit, of a frequency-modulated light pulse (intra-pulse modulation) that is optically selected and directed at optical splitters and delay lines for various measurement points of interest, giving rise to multiple signals that interact with the methane gas in reflective sensors, that is, sensors that reflect light, returning to the remote unit a time signal from N point sensors, which is detected by a single optical receiver and the time signals of which are analysed individually by calculating the fast Fourier transform (FFT). The FFT signal thus obtained contains an amplitude A0 at the zero frequency or DC component, f0, an amplitude A1 at the same modulation frequency as the laser, f1, and an amplitude A2 at twice the original laser frequency, f2 = 2 x f1. In this way, the system makes it possible to obtain the concentrations (C) from the N sensors on the basis of the amplitudes A0, A1 and A2, by calculating the mean (M) between log(A2/A0) and log(A2/A1), that is, M = ½ × [log(A2/A0) + log(A2/A1)], and a calibration curve, where M is invariant with respect to the optical loss of the fibre optic links and depends solely on the concentration.

IPC Classes  ?

• G01M 3/38 - Investigating fluid tightness of structures by using light
• G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups

Abstract

The present invention relates to an electric energy grid monitoring system comprising a plurality of optical fiber Bragg grating sensors (FBG) (005; 007; 011; 019; 021) arranged at points of interest in the electric energy grid to monitor parameters of interest of the electric grid, and an interrogator (001) for sending a light signal to the optical FBG sensors (005; 007; 011; 019; 021) and collecting the return light. In this configuration, variations in the wavelength of the return light from each of the optical FBG sensors (005; 007; 011; 019; 021) correspond to variations in the parameters of interest of the electric energy grid. The proposed system further comprises at least one primary optical fiber cable (003) to convey the light signal from the interrogator (001), and an optical fiber splitter (029) connected to the primary optical fiber cable (003) to split the light signal from the interrogator (001) to a plurality of secondary optical fiber cables (028). Each of the secondary optical fiber cables (028) is connected to one of the plurality of FBG sensors (005; 007; 011; 019; 021) to convey the light signal from the interrogator (001) to the plurality of optical FBG sensors (005; 007; 011; 019; 021).

IPC Classes  ?

• 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
• G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Abstract

The present utility model relates to an arrangement in a passive adapter device for current sensors, the device comprising: a core case comprising two components, wherein each component houses a magnetic core and each component comprises a concavity to form a passage allowing the core case to be arranged around an electric conductor when the case is in the closed position; and an optical case attached to the side of the core case and accommodating, next to the magnetic cores, an optical fiber sensor (Fiber Bragg Grating or FBG) that can be connected to an optical fiber cable and attached to a magnetostrictive element.

IPC Classes  ?

• 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
• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• G01R 19/03 - Measuring effective values, i.e. root-mean-square values using thermoconverters

Abstract

The present invention relates to optical sensor cable arrangements in underground power distribution lines, comprising at least one housing structure (15), a plurality of electric conductors (13) inside the at least one housing structure (15) and at least one optical FBG sensor cable (1) inside the at least one housing structure (15), wherein the optical FBG sensor cable (1) is designed for monitoring at least one parameter from among the temperature or the acoustic vibrations of the plurality of electric conductors (13). Each sensor cable arrangement is such that the optical FBG sensor cable (1) is disposed parallel to and outside the plurality of electric conductors (13).

IPC Classes  ?

• H02G 9/06 - Installations of electric cables or lines in or on the ground or water in underground tubes or conduitsTubes or conduits therefor
• 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
• G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Abstract

The present invention describes a novel method for compensating chromatic dispersion in band-limited digital signals applied to optical-fibre communication systems with long-distance, high-symbol-rate connections, that are subject to distortion caused by the propagation of communication signals and require compensation of the dispersion, that is intended to reduce the complexity of the chromatic dispersion compensation, taking advantage of the particular shape of the second-order dispersion filter.

IPC Classes  ?

• H04B 10/2513 - Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion

Abstract

A new modular battery model for a temperature management and monitoring system, which has a physical mechanical array of lithium-ion cells for use in individual battery management systems (BMSs), offering an integrated heat/electrical power management solution for electrical mobility, applied in the field of smart batteries for supplying a defined charge for a specified period of time, with management and monitoring of temperature, being capable of providing power to an electrical system of up to 48V with adjustable capacity, measuring the voltage at the terminals of each component cell, identifying the under- and overvoltage conditions, measuring the current between the cells and identifying excess current and short-circuit conditions in the system, and further monitoring the temperature in the cells, identifying conditions of too low and too high a temperature and detecting defects in the monitoring of the internal temperature of the battery, being able therewith to form arrays of up to 14 cells, focusing on the individual charge of each cell.

IPC Classes  ?

• G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• H01M 10/60 - Heating or coolingTemperature control
• H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte

Abstract

Bluetooth Bluetooth electronic beacons (beaconsBluetooth electronic beacons (beacons) and other applications such as mobile devices requiring tuned signals or gain/performance variations.

IPC Classes  ?

• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

The present invention describes a closed-loop electronic control method for regulating the power of a direct current bus and at the same time controlling the switching of energy conversion power semiconductors in a model-based predictive control system (MBPC) for use in actuating electric motors. This regulation is based on a predictive control strategy and is performed by applying phasor modulation technology, which acts directly upon the actuation of the circuit that controls the frequency and magnitude of the voltage source connected to the electric machine. This method allows coupling the inverter to an energy source, such as a battery or an electrical grid, without requiring a CC/CC converter, with improved efficiency and less fluctuation of the bus voltage.

Abstract

Applications based on voice processing, which detect spoofing attacks in voice signals, using the phase information of the signal in the frequency domain. The invention applies principally to systems using voice-based biometrics, with the aim of preventing a signal already used as entry into the system, in lists or in acknowledgements of the user, from being reused, even if said signal undergoes alterations or only a part thereof is reutilized. The invention is capable of detecting a broad range of attacks, focusing on replay, when a sound component (partial or complete, with or without alterations) already used by the legitimate user is re-submitted by another user on the system. An alternative embodiment of the invention further extends fraud detection to cases of distortion in the sound duration scale.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06F 17/15 - Correlation function computation
• G10L 17/20 - Pattern transformations or operations aimed at increasing system robustness, e.g. against channel noise or different working conditions

Abstract

A cabinet for mounting electric energy meters for centralised measurement comprises a box (2) in the shape of a cube with rounded corners and having at one end a flat edge (3); a front cover (4) that fits into the flat edge (3) of the box (2) with a safety lock (5) and is attached by means of top hinges (6); a double fastening strap (8) arranged on the rear side of the box (2) that forms the cabinet (1) for fastening the cabinet (1) to a post or another outer structure; fastening devices (12) for mounting electric energy meters (9) and the cabinet monitor (10), an internal clamp (11) for preventing illicit removal of the electric energy meters (9) and cabinet monitor (10); an optical bus bar (13) and optical LEDs (14) for identifying each electric energy meter (9) suitably mounted in the cabinet (1); a cable inlet (7) for the input terminal (17) that comprises a cover (18) with a clamp (19) and a cable outlet (20) from the cabinet (1); phase blades (15) and neutral blades (16).

IPC Classes  ?

• G01D 11/24 - Housings
• G01R 1/04 - HousingsSupporting membersArrangements of terminals

Abstract

A modulated monophasic, biphasic and triphasic electric energy electronic meter comprises a cabinet having a regular geometric shape for housing the electric energy measurement components inside same. The cabinet having a knife blade-like fitting (3f) for connection to the line of the electric energy provider; terminals (4d) for connecting the load to the consumer; and an optical transmitter arranged on the rear portion for allowing the meter to be automatically identified by panels or cabinets equipped with optical receivers.

IPC Classes  ?

• H02B 1/03 - Boards, panels, desksParts thereof or accessories therefor for energy meters
• H02B 1/30 - Cabinet-type casingsParts thereof or accessories therefor
• H02B 1/40 - Wall-mounted casingsParts thereof or accessories therefor

Abstract

This invention relates to a device that links a digital electricity meter to a remote usage display such that there is no possibility of operational error and, in 100% of cases, a meter with remote display is installed in which the logical association between the meter and the display can be correctly implemented.

IPC Classes  ?

• G01R 21/133 - Arrangements for measuring electric power or power factor by using digital technique

Abstract

Electronic electricity meter with integrated digital-certification mechanism for secure communication, comprising current sensors 1(a), voltage sensors (b), electronic circuit (c) for conditioning the current signals and voltage signals in the electrical levels required by the processing unit (d), processing unit (d) able to continuously sample the current signals and voltage signals provided by the circuit (c) and that reflect, using a known ratio, the real value of the current and voltage delivered to the meter connection terminals, the processing unit (d) calculates the active and passive through energy and determines the energy values to be counted, and a communication unit (e), linked to the processing unit (d), which uses a digital data protocol and a physical interface to communicate with the world outside the meter, and a processing unit with digital certification functions (f) located between the processing unit (d) and the communication unit (e), in which the processing unit with digital verification functions (UPFCD) is intended to encrypt and sign all of the data made available, using the data protocol of the communication unit (e), to the outside world, such that the electronic relationship with the meter in terms of data communication is governed by the use of the digital certification technique natively and non-separably.

IPC Classes  ?

• G08C 17/02 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
• H04L 9/14 - Arrangements for secret or secure communicationsNetwork security protocols using a plurality of keys or algorithms

Abstract

A method of laterally displacing at least a component of a light beam, the method comprising a) directing the beam to enter a block of birefringent material (506) at a first location, and at least the component of the beam to pass through the block on a first path to an exit location, and b) changing a polarization of the component of the beam after it has passed through the block, and directing it to pass back through th block from the previous exit location to a next exit location, following a next path oriented at changed angle due to its changed polarization state, at least one time, the component of the beam thereby being laterally displaced from the first location, when it exits the block a last time.

IPC Classes  ?

• G02B 6/00 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings
• G02B 5/30 - Polarising elements
• G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising

Goods & Services

Computer software for managing, operating, administering, developing, testing, modeling, repairing and tracking communications networks destined for telecommunications [, electric, governmental and financial sectors ]; computer software for customer care, billing, workforce management, outside plant management, switch management, optical supervision, optical simulation, IP access management, remote supervision, and equipment supervision, for use in telecommunications, electric, governmental and financial sectors