EP3516341A1 - Procédé et dispositif de vérification de fonctionnement d'un capteur à fibres optiques et produit-programme d'ordinateur - Google Patents

Procédé et dispositif de vérification de fonctionnement d'un capteur à fibres optiques et produit-programme d'ordinateur

Info

Publication number
EP3516341A1
EP3516341A1 EP17772622.1A EP17772622A EP3516341A1 EP 3516341 A1 EP3516341 A1 EP 3516341A1 EP 17772622 A EP17772622 A EP 17772622A EP 3516341 A1 EP3516341 A1 EP 3516341A1
Authority
EP
European Patent Office
Prior art keywords
size
fiber optic
optic sensor
optical sensor
determining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17772622.1A
Other languages
German (de)
English (en)
Inventor
Mathias Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polytech Wind Power Technology Germany GmbH
Original Assignee
fos4X GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by fos4X GmbH filed Critical fos4X GmbH
Publication of EP3516341A1 publication Critical patent/EP3516341A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/093—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by photoelectric pick-up
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/80—Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
    • F05B2270/804—Optical devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means 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 converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means 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 converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means 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 converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means 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 converting; Transducers not specially adapted for a specific variable characterised by optical transfer 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
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means 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 converting; Transducers not specially adapted for a specific variable characterised by optical transfer 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the disclosure relates to a method and a device for functional testing of a fiber optic sensor, and relates to a computer program product. More particularly, the present disclosure relates to determining a defect of a measurement system using the fiber optic sensor.
  • Fiber optic sensors can be used to monitor technical equipment.
  • the fiber optic sensors provide measurement signals that can indicate, for example, a state of the technical system. Deviations of the measuring signals, for example due to a malfunction of a fiber-optic sensor, can lead to erroneous state determinations of the technical system.
  • the method includes receiving optical sensor signals of the fiber optic sensor in an evaluation unit, determining a first quantity of the optical sensor signals, determining if the first size is within a predetermined range, determining a malfunction of the sensor if the first size is outside of the predetermined range, and determining a second size of the optical sensor signals different from the first size when it is determined that the first size is within the predetermined range, the second size indicative of a parameter determined by the fiber optic Sensor to be determined.
  • an apparatus for functional testing of a fiber optic sensor comprises a receiving unit for receiving optical sensor signals, which are output by the fiber-optic sensor, and an evaluation unit.
  • the evaluation unit is configured to determine a first quantity from the optical sensor signals, determining whether the first size is within a predetermined range, determining a malfunction of the fiber optic sensor if the first size is outside the predetermined range, determining a second quantity from the optical Sensor signals that is different from the first magnitude when it is determined that the first magnitude is within the predetermined range, the second magnitude indicative of a parameter to be determined by the fiber optic sensor.
  • a computer program product is provided with software.
  • the software is configured to determine a first quantity of optical sensor signals from a fiber optic sensor, to determine whether the first size is within a predetermined range, to determine that there is a malfunction of the fiber optic sensor if the first size is outside the predetermined range is to determine a second size of the optical sensor signals, the is different from the first size when it is determined that the first size is within the predetermined range, the second size indicating a parameter to be determined by the fiber optic sensor.
  • the optical sensor signals are used to first perform a plausibility check using the first size determined therefrom. If the first variable does not seem plausible, it is possible to conclude that a malfunction of the measuring system, such as, for example, the fiber-optic sensor, an evaluation unit and / or devices for data exchange between sensors and evaluation unit. However, if the first variable seems plausible, then a second, different quantity is determined from the optical sensor signals, indicating a parameter to be determined, for example, of a technical system. Thus, it can be reliably detected whether the measurement signals are correct, or are due to a malfunction of, for example, the fiber optic sensor.
  • the first variable does not seem plausible, it is possible to conclude that a malfunction of the measuring system, such as, for example, the fiber-optic sensor, an evaluation unit and / or devices for data exchange between sensors and evaluation unit.
  • a second, different quantity is determined from the optical sensor signals, indicating a parameter to be determined, for example, of a technical system.
  • FIG. 1A shows a schematic illustration of a device for functional testing of a fiber-optic sensor according to embodiments of the present disclosure
  • FIG. 1B shows a schematic illustration of a device for functional testing of a fiber-optic sensor according to further embodiments of the present disclosure
  • FIG. 2 shows a flow chart of a method for functional testing of a fiber-optic sensor according to embodiments of the present disclosure
  • FIG. 3 is an illustration of an optical sensor signal according to embodiments of the present disclosure.
  • FIG. 1A shows a schematic representation of a device 100 for functional testing of a fiber optic sensor 110 according to embodiments of the present disclosure.
  • the fiber optic sensor 110 is shown only as an example. Other types of fiber optic sensors may be used for the embodiments of the present disclosure.
  • the device 100 comprises a receiving unit 122 for receiving optical sensor signals which are output by the fiber-optic sensor 110, and an evaluation unit 124.
  • the evaluation unit 124 is designed to determine a first quantity from the optical sensor signals, determining whether the first variable is within one predetermined range, determining a malfunction of the fiber optic sensor 110, if the first size is outside the predetermined range, determining a second size of the optical sensor signals, which is different from the first size, if it is determined that the first size within the predetermined Range, wherein the second size indicates a parameter to be determined by the fiber optic sensor 110.
  • a malfunction of the fiber optic sensor of a measurement system may be inferred if the first size is outside of the measurement range predetermined range is. Thus, it can be reliably detected whether the measurement signals are correct, or are due to a malfunction of, for example, the fiber optic sensor. According to embodiments, it is also possible to infer malfunctions of other elements of the measuring system, such as, for example, the evaluation unit 124 itself and / or devices for data exchange between the fiber-optic sensors 110 and the evaluation unit 124.
  • the fiber optic sensor 110 may be used according to embodiments in a power plant, such as a wind turbine.
  • the fiber-optic sensor 110 may be integrated into a rotor blade 10 of the wind turbine or arranged on a surface of the rotor blade 10.
  • the present disclosure is not limited thereto, and the fiber optic sensor 110 may be disposed in other parts of the wind turbine, such as a hub on which the rotor blade is rotatably supported.
  • the fiber optic sensor is selected from the group consisting of acceleration sensors, torsion sensors, temperature sensors, and any combinations thereof.
  • the fiber-optic sensor 110 shown by way of example in FIG. 1A is connected to a light source 130, which is set up to emit polarized or unpolarized light.
  • the light source 130 may be a polarizing light source that emits polarized light, or may be optically connected to a polarizer.
  • the light source 130 may be connected to the fiber optic sensor 110 via a first fiber optic fiber 133.
  • the light source 130 and the device 100 may be connected to each other.
  • the device 100 may receive data from the light source 130 regarding light emission and / or may be configured to control the light source 130 for light emission.
  • the light source 130 may be integrated in the device 100, or may be separate from be provided to the device 100.
  • the light source 130 may be integrated in the fiber optic sensor 110.
  • the fiber optic sensor 110 of FIG. 1A comprises a second fiber optic fiber 116 which is optically connected to the output of the light source 130 via the first fiber optic fiber 133, for example.
  • a Bragg grating 118 may be present in the second optical fiber 116.
  • a third optical fiber 123 is provided for supplying the light passed through the second optical fiber 116 to the receiving unit 122 of the device 100.
  • the light reaching the receiving unit 120 may correspond to the optical sensor signals from which the first size and the second size are determined.
  • the light emitted by the light source 130 passes through the first fiber optic fiber 133 to the fiber optic sensor 110, is then modulated by the Bragg grating 118 in the second fiber optic fiber 116, and then passes over the fiber optic fiber third fiber optic fiber 123 to the evaluation unit 124.
  • the light travels in separate fiber optic fibers to the fiber optic sensor 110 and the fiber optic sensor 110 away.
  • FIG. 1B shows a further example of a measuring system with a fiber optic sensor 110 which is connected to the device 140 according to the embodiments described here.
  • the light emitted by the light source is conducted via an optical fiber 142 to the fiber optic sensor.
  • Light reflected by the Bragg grating 118 of the fiber optic sensor 110 travels back to the device 140 via the same optical fiber 142, where it is evaluated by the evaluation unit to determine the first size and / or the second size.
  • the light source may be integrated in the device 140, or may be provided separately from the device 140, as exemplified in FIG. 1A.
  • a computer program product is indicated with software.
  • the software may be used in the apparatus according to the embodiments described herein, and more particularly in the evaluation unit, be implemented.
  • the software is set up to perform the functional test of the fiber optic sensor described here.
  • FIG. 2 shows a flow chart of a method 200 for functional testing of a fiber-optic sensor according to embodiments of the present disclosure.
  • the method 200 comprises receiving optical sensor signals of the fiber-optic sensor in an evaluation unit in step 210, determining a first variable from the optical sensor signals in step 220, determining in step 230 whether the first variable is within a predetermined range in the step 240 determining a malfunction of the fiber optic sensor when the first size is out of the predetermined range, and at step 250, determining a second size from the optical sensor signals that is different than the first size when it is determined that the first size is within of the predetermined range.
  • the second size indicates a parameter to be determined by the fiber optic sensor.
  • the optical sensor signals may be generated by supplying light to the fiber optic sensor which is altered or modulated by the fiber optic sensor, and in particular by the Bragg grating.
  • the light may pass through the fiber optic sensor, as shown in FIG. 1A.
  • the light may be at least partially reflected by the fiber optic sensor, as illustrated in FIG. 1B.
  • the fiber optic sensor can be used in a technical installation, for example in a wind turbine.
  • the fiber optic sensor can be mounted in or on the system, for example on a rotor blade of the wind turbine, as described with reference to FIG.
  • the parameter indicated by the second variable may be, for example, an operating parameter, environmental parameters, or plant parameters with respect to the technical installation and / or its environment.
  • the second size gives the Parameter itself or a value of the parameter.
  • the second size may be selected from the group consisting of a natural frequency of a rotor blade, a temperature, a pitch of the rotor blade, a pitch angle, a wind speed, and a flow velocity.
  • the operating parameters may include, for example, a natural frequency of a rotor blade, an angle of attack, a pitch angle, an angle of attack, a flow velocity, and a rotational speed of the rotor blade.
  • the environmental parameters may include, for example, a wind speed and an ambient or outside temperature.
  • the plant parameters may be plant-specific parameters, such as a location, a height of a nacelle of the wind turbine, and a length of the rotor blades.
  • the angle of attack is defined with respect to a reference plane.
  • the pitch angle may indicate an angular adjustment of the rotor blade relative to a hub on which the rotor blade is rotatably mounted.
  • the flow velocity may indicate a relative velocity or relative average velocity with which the air impinges on the rotor blade.
  • the wind speed can indicate an absolute wind speed.
  • the temperature may be an ambient or outdoor temperature.
  • one or more additional parameters may be used to determine the second size and / or parameter.
  • the one or more additional parameters may be selected from the above group consisting of the operating parameters, the environmental parameters, and the plant parameters thereof.
  • Both the first size and the second size are determined from the optical sensor signals of the fiber optic sensor.
  • the first size and the second size are different.
  • the first size can be determined by a first evaluation.
  • the second size can be determined by a second evaluation, which is different from the first evaluation.
  • the first evaluation can take place independently of properties or features of the technical installation, such as a geometry and / or mass of a rotor blade.
  • the first evaluation can be done without or independently of the operating parameters, environmental parameters and system parameters. In other words, for example, the first evaluation may not use characteristics or features of the technical equipment for the determination of the first quantity.
  • the second evaluation on the other hand, can use such properties or features of the technical installation, and can in particular use the operating parameters, environmental parameters and / or installation parameters.
  • the determination of the natural frequency of the rotor blade which represents the second size, can be carried out using a geometry and / or mass of the rotor blade.
  • the predetermined range may be defined around a sensor-specific reference value or normal value.
  • the predetermined range may be an area in which it can be assumed that the sensor will function correctly under normal circumstances, ie that it will not malfunction. For example, if the first size is equal to the reference value or within the predetermined range of the reference value, the fiber optic sensor will not malfunction. However, if the first size is outside the predetermined range, the presence of a malfunction is detected.
  • the predetermined range may be defined, for example, by a predetermined percentage deviation from the reference value.
  • the reference deviation may correspond to a deviation of 5%, 10%, 15%, or 20% of the reference value.
  • the first magnitude may correspond to an optical property of the optical sensor signals.
  • the first size may be selected from the group consisting of an intensity of the optical Sensor signals and a polarization of the optical sensor signals exists.
  • the determination of the intensity or polarization can take place without knowledge or use of the properties or features of the technical installation.
  • FIG. 3 an example of a determination of the first quantity from an intensity of the optical sensor signals is explained.
  • the fiber optic sensor has no malfunction. However, if the measured intensity is outside the predetermined range, the presence of a malfunction is detected.
  • the fiber optic sensor may provide the optical sensor signals continuously or at intervals.
  • a measurement by the fiber optic sensor can be made continuously or at intervals.
  • the determination of the first variable from the optical sensor signals can take place before, during and / or after such a measurement.
  • relevant parts of the condition monitoring system can be checked for function directly before, during or directly after a measurement.
  • the relevant parts may include, for example, the sensors, the evaluation unit, and / or devices for measuring data exchange between sensors and evaluation unit.
  • monitoring takes place as to whether the signal level of the signal emerging from the fiber optic sensor is within a sensor-specific, defined range.
  • a plausibility check of the level can be made at the software level. In this case, the level of a measurement signal or that of a test signal that has been recorded specifically for the check can be used.
  • an input optical signal may be used for a measurement to obtain the optical sensor signals that are output signals.
  • the optical sensor signals thus obtained can be used for determining the first quantity and determining the second size become.
  • the same optical sensor signals of a measurement may be used for the determination of the first size and the second size.
  • At least a first optical sensor signal may be used for the determination of the first quantity, and then the first optical signal after a positive plausibility check may also be used for the determination of the second quantity.
  • different optical sensor signals of a single measurement may be used to determine the first size and the second size. For example, at least a first optical sensor signal of the measurement may be used for the determination of the first quantity, and then at least one second optical sensor signal of the measurement may be used for the determination of the second quantity.
  • one or more test signals may be used to generate or provide the optical sensor signals to determine the first size.
  • the fiber-optic sensor can send a defined test signal to the evaluation unit at regular intervals.
  • the fiber-optic sensor can automatically send the test signal to the evaluation unit, or it can send it to the evaluation unit in response to a command signal from the evaluation unit.
  • a defined test signal may be sent from the light source to the fiber optic sensor, for example.
  • the optical input signals described above may be used to generate the second sensor size sensor optical signals.
  • the test signals and the optical input signals for the measurement may be different. For example, a wavelength and / or a time interval of the test signals can be changed in order to obtain the optical sensor signals for determining the first size.
  • a measurement for determining the second size may or may not be exposed respectively.
  • the optical input signals and the test signals may be provided from the same light source or may be provided by different light sources.
  • the determination of the first magnitude of the optical sensor signals is not performed on each measurement performed by the fiber optic sensor.
  • the determination of the first quantity from the optical sensor signals may take place at or after every x-th measurement performed by the fiber-optic sensor, x may be greater than 2, 10, 100, or 1000.
  • the second size is determined from the optical sensor signals for each measurement performed by the fiber optic sensor.
  • method 200 further includes outputting a message or alarm when the malfunction of the fiber optic sensor is determined.
  • the device may issue a message or an alarm to inform a user of the presence of the malfunction of, for example, the fiber optic sensor.
  • the device may for this purpose comprise a display device such as a screen.
  • the message or the alarm may be issued optically and / or acoustically.
  • the fiber-optic sensor can be used in a wind turbine, and in particular in a measuring system for the wind turbine.
  • the measuring system can be designed to determine a condition of the rotor blade. For example, it can be determined by determining the natural frequency of the rotor blade whether an engagement of the rotor blade with foreign material, such as ice, is present.
  • a measured variable can be detected, which correlated with the condition of the rotor blades.
  • the natural frequencies of the blade can be monitored by means of acceleration sensors. When the state of the sheet changes, for example due to damage, a change in the leaf natural frequencies can then be observed. If damage is detected by the measuring system, it can not be ruled out that the cause is a defect within the measuring system. By the functional test according to the invention, the reliability of the measuring system can be improved.
  • FIG. 3 shows a representation of an optical sensor signal 300 according to embodiments of the present disclosure.
  • the first size may correspond to a property of the optical sensor signals.
  • the first variable may be an intensity of the optical sensor signal 300.
  • the vertical axis in FIG. 3 indicates the intensity, and the horizontal axis indicates a wavelength of the optical sensor signal 300.
  • an optical sensor signal may indicate an intensity over a predetermined wavelength range 310, as shown in the example of FIG.
  • a measurement over the predetermined wavelength range 310 may be performed to obtain an intensity or intensity distribution.
  • the predetermined wavelength range 310 may be selected sensor-specific.
  • the predetermined wavelength range 310 may include a range or range in which typical or known malfunctions of the fiber optic sensor result in significant deviations in the optical sensor signals and thus can be clearly seen.
  • the optical sensor signal may indicate intensity at a specific wavelength.
  • a measurement can be performed at a specific wavelength to obtain an intensity.
  • the first quantity may be an average of the optical property, for example the intensity, over the predetermined wavelength range 310.
  • the first size a value at a selected wavelength 320, which is determined, for example, from the intensity distribution.
  • the optical sensor signals are used to first perform a plausibility check using the first size determined therefrom. If the first variable does not seem plausible, it is possible to conclude that a malfunction of the measuring system, such as, for example, the fiber-optic sensor, an evaluation unit and / or devices for data exchange between sensors and evaluation unit. However, if the first variable seems plausible, then a second, different quantity is determined from the optical sensor signals, which indicates a parameter to be determined, for example, of a technical system. Thus, it can be reliably detected whether the measurement signals are correct, or are due to a malfunction of, for example, the fiber optic sensor.

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Transform (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé (200) permettant de vérifier le fonctionnement d'un capteur à fibres optiques (110). Le procédé (200) comporte les étapes consistant à : recevoir (220) des signaux optiques du capteur à fibres optiques (110) dans une unité d'évaluation (124) ; calculer (230) une première grandeur à partir des signaux optiques du capteur ; déterminer (240) si la première grandeur est ou non à l'intérieur d'une plage prédéterminée ; déterminer (250) un dysfonctionnement du capteur à fibres optiques (110) si la première grandeur est en dehors de la plage prédéterminée ; et calculer (260), à partir des signaux optiques du capteur, une seconde grandeur qui est différente de la première grandeur lorsqu'il est déterminé que la première grandeur est à l'intérieur de la plage prédéterminée, la seconde grandeur indiquant un paramètre qui doit être calculé par le capteur à fibres optiques (110).
EP17772622.1A 2016-09-20 2017-09-11 Procédé et dispositif de vérification de fonctionnement d'un capteur à fibres optiques et produit-programme d'ordinateur Withdrawn EP3516341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016117691.5A DE102016117691B3 (de) 2016-09-20 2016-09-20 Verfahren und Vorrichtung zur Funktionsprüfung eines faseroptischen Sensors und Computerprogrammprodukt
PCT/EP2017/072750 WO2018054707A1 (fr) 2016-09-20 2017-09-11 Procédé et dispositif de vérification de fonctionnement d'un capteur à fibres optiques et produit-programme d'ordinateur

Publications (1)

Publication Number Publication Date
EP3516341A1 true EP3516341A1 (fr) 2019-07-31

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EP17772622.1A Withdrawn EP3516341A1 (fr) 2016-09-20 2017-09-11 Procédé et dispositif de vérification de fonctionnement d'un capteur à fibres optiques et produit-programme d'ordinateur

Country Status (6)

Country Link
US (1) US20190265097A1 (fr)
EP (1) EP3516341A1 (fr)
CN (1) CN109791060A (fr)
CA (1) CA3036305A1 (fr)
DE (1) DE102016117691B3 (fr)
WO (1) WO2018054707A1 (fr)

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CN109791060A (zh) 2019-05-21

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