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WO2015165782A2 - Capteur et procédé pour capter au moins une grandeur de mesure mesurable d'un agent dans un tube - Google Patents

Capteur et procédé pour capter au moins une grandeur de mesure mesurable d'un agent dans un tube Download PDF

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Publication number
WO2015165782A2
WO2015165782A2 PCT/EP2015/058625 EP2015058625W WO2015165782A2 WO 2015165782 A2 WO2015165782 A2 WO 2015165782A2 EP 2015058625 W EP2015058625 W EP 2015058625W WO 2015165782 A2 WO2015165782 A2 WO 2015165782A2
Authority
WO
WIPO (PCT)
Prior art keywords
tube
fiber
sensor
medium
mass flow
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.)
Ceased
Application number
PCT/EP2015/058625
Other languages
German (de)
English (en)
Other versions
WO2015165782A3 (fr
Inventor
Antoine Chabaud
Bernd Stuke
Ronny Leonhardt
Martin Voss
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2015165782A2 publication Critical patent/WO2015165782A2/fr
Publication of WO2015165782A3 publication Critical patent/WO2015165782A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G01L11/025—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0627—Protection against aggressive medium in general
    • G01L19/0636—Protection against aggressive medium in general using particle filters

Definitions

  • the present invention relates to a sensor for detecting at least one measurable measured variable of a medium in a tube, to an evaluation device for evaluating a signal of the sensor, to a
  • a mass flow of a medium in a pipe can be detected by a sensor.
  • the Coriolis force can be exploited, which acts on the medium when it is transverse to his
  • a sensor for detecting at least one measurable measurand of a medium in a tube an evaluation device for evaluating a signal of the sensor, a method for measuring at least one measurable measurand of a medium in a tube and finally a corresponding computer program product presented according to the main claims.
  • Advantageous embodiments emerge from the respective subclaims and the following description.
  • Strain measurement sensors are detected. A particularly accurate detection is possible by optical elements. In this case, a change in length of an optical element is detected, which correlates with the deformation of the component.
  • a sensor for detecting at least one measurable measured variable of a medium in a tube is presented, wherein the sensor has at least one deformable, in particular extensible, evaluable by an evaluation device
  • Optical fiber has, which is arranged in the tube to detect the measured variable in dependence on the deformation, in particular elongation of the optical fiber.
  • Evaluation device is optically coupled to the at least one optical fiber or coupled, and is adapted to optically determine an elongation of the optical fiber, and to determine the measured variable using the strain.
  • a medium can be a liquid or a gas.
  • a measured variable can be understood to be a static pressure, a temperature and / or a mass flow.
  • An optical fiber may be an optical fiber in which light travels almost totally lossless from one end of the fiber to the other end of the fiber by total internal reflection on the walls of the fiber
  • An evaluation device can be in
  • the Evaluation device can also be connected to only one end of the fiber, if at the opposite end of the fiber, a reflection means for throwing back the light is arranged in the fiber.
  • Evaluation device can be configured to the elongation of
  • Fiber optic fiber using an optical method can be used.
  • data from a calibration table can be used.
  • At least one of the optical fibers may be formed as a mass flow sensing fiber.
  • the mass flow sensing fiber may be transverse to a
  • An arrangement transverse to the longitudinal direction of the tube may in the present case be understood to mean a direction which differs generally from the longitudinal direction of the tube, in particular which is at right angles to the longitudinal direction of the tube.
  • the mass flow sensing fiber can detect a mass flow of the medium through the tube.
  • Mass flow detection fiber the strain-induced difference in the spectrum of the transmitted light is detected. About this can on the
  • the sensor can be at least two optically separate
  • the mass flow sensing fibers may be distributed across a cross-sectional area of the tube transverse to the longitudinal direction.
  • the evaluation device may be configured to optically determine a first elongation of a first optical fiber of the sensor and at least a second elongation of a second optical fiber of the sensor, and
  • Fiber optic fibers can be achieved redundancy in the sensor. If one of the optical fibers breaks or has another defect, the remaining optical fibers can ensure the function of the sensor.
  • the sensor may comprise at least one further extensible optical fiber which can be evaluated by the evaluation device and which is at least in a partial region of a mass flow sensing fiber along the
  • Mass flow sensing fiber extends and is mechanically coupled to the mass flow sensing fiber in the portion.
  • Mass flow sensing fiber may form a bending beam for detecting a flow direction of the medium in the pipe, wherein a bending direction of the bending beam may be aligned in the longitudinal direction.
  • Mass flow sensing fiber and the further optical fiber can be optically separated from each other.
  • Optical fiber can be glued together, for example.
  • Bending beams can detect bi-directional bends, compressing one fiber at a time and stretching the other fiber.
  • the at least one mass flow sensing fiber may form a grid whose plane is transverse to the longitudinal axis of the tube. If the fibers are mounted in a cross section, using z. B.
  • the velocity distribution over the cross section can be determined.
  • the integral volume flow can be determined very accurately by specifying the flow cross section without assuming the
  • the at least one mass flow sensing fiber may be arranged in grid lines of the grating.
  • the grid lines may be arranged substantially parallel to each other.
  • the at least one mass flow sensing fiber may form a star-shaped lattice. Different grid shapes can be used to meet special sensor accuracy requirements.
  • the grating may have a first group of grating lines and at least a second one
  • the grid lines of the first group may be aligned substantially parallel to each other.
  • the grid lines of the second group may be aligned substantially parallel to each other.
  • the grid lines of the first group and the grid lines of the second group may be arranged at an angle to each other. For example, you can the groups are aligned at right angles to each other. This results in a cross-shaped grid, which can be made very tight mesh to detect the flow of the medium in the tube high resolution.
  • At least one of the optical fibers may be formed as a temperature detection fiber.
  • the temperature sensing fiber may be arranged in the longitudinal direction of the tube.
  • the temperature sensing fiber may be mechanically coupled to the tube to detect as a measure of thermal expansion of the tube due to a temperature of the medium in the tube.
  • An optical detection of the temperature can be carried out particularly accurately. The temperature measurement can be used to compensate the measurement results of other measurands.
  • At least one of the optical fibers may be formed as a pressure sensing fiber.
  • the pressure sensing fiber may be disposed transverse to the longitudinal direction of the tube.
  • the pressure sensing fiber may be at least partially annular along a wall of the tube and mechanically coupled to the tube to detect mechanical expansion of the tube due to static pressure of the medium in the tube.
  • An optical detection of the pressure can be carried out particularly accurately.
  • the pressure measurement can be used to check the plausibility of the measured quantities.
  • the sensor may comprise a screen for protecting the optical fiber.
  • the sieve can be arranged transversely to the tube. In particular, the sieve can have a smaller mesh size than the mesh. Through a sieve, damage to the optical fibers can be avoided. This allows a long life of the sensor can be achieved.
  • a sensor system which has a sensor according to a variant presented here and an evaluation unit coupled to the sensor according to a variant presented here.
  • the measurable measurand of a medium in the tube can be particularly well
  • a mass flow through the pipe are determined.
  • a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and for carrying out and / or driving the steps of the method according to one of the above-described
  • Embodiments is used, especially when the program product is executed on a computer or a device.
  • FIG. 1 is a block diagram of a sensor according to an embodiment of the present invention.
  • FIG. 2 shows an illustration of a sensor for detecting at least one measurable measured variable of a medium in a tube according to a
  • Fig. 3 is an illustration of a star-shaped grid according to a
  • Fig. 4 is an illustration of a linear grating according to a
  • Fig. 5 is an illustration of a cross-shaped grid according to a
  • FIG. 6 shows a flowchart of a method for detecting at least one measurable measured variable of a medium in a pipe according to a
  • the foreign particles may be referred to as tracers.
  • a time-resolved and spatially resolved velocity profile can be detected by the sensor, with the volume flow or the
  • Mass flow can be closed.
  • Fig. 1 shows a block diagram of a sensor 100 according to a
  • the sensor 100 is designed to detect at least one measurable measured variable of a medium in a tube 102.
  • the sensor 100 has at least one of a Evaluation device 104 evaluable, stretchable optical fiber 106 on.
  • the optical fiber 106 is disposed in the tube 102 to detect the measurand.
  • the evaluation device 104 is optically coupled to the at least one optical fiber 106.
  • the evaluation device 104 is designed to optically determine an expansion of the optical fiber 106.
  • Evaluation device 104 is designed to determine the measured variable using the strain.
  • FIG. 1 shows a mass flow sensor 100 based on optical strain measurement.
  • the optical fiber 106 is disposed in the tube 102 so that an effective length of a measurement path of the optical fiber 106 is known. If the medium causes, for example, a mass flow, a static pressure and / or a temperature an elongation and thus a change in length of the optical fiber 106, the evaluation device 104 can measure a change in the length of the optical fiber 106. For example, using the speed of light, a runtime of a
  • Light pulse along the optical fiber 106 can be determined. Likewise, the change in length of the optical fiber fiber 106 can be detected via interferometry. The most widely used method is the analysis of the spectrum and the analysis of the wavelength fraction that is absorbed. It can the
  • Fiber optic fiber 106 through the measuring path several times.
  • a multiple arrangement of the optical fiber 106 in the measuring section can be detected by the evaluation device 104, a multiple of the actual change in length. As a result, a higher accuracy can be achieved.
  • the fiber optic fiber 106 may be freely disposed across the tube 102 in the tube. Then dynamic forces due to a flow of the medium can cause the change in length of the optical fiber 106. Thus, it can be concluded in the evaluation device 104 of the change in length of the optical fiber fiber 106 to a mass flow of the medium in the tube 102.
  • the fiber optic fiber 106 may be disposed along a wall of the tube 102.
  • the optical fiber 106 fixed to the wall be connected.
  • the optical fiber 106 is elongated as the wall of the tube 102 is stretched.
  • the wall is stretched when the medium in the tube 102 exerts a static pressure on an inside of the tube 102.
  • the tube 102 acts like a spring, and a diameter of the tube 102 becomes larger in proportion to the static pressure.
  • the evaluation device 104 can infer the pressure of the medium.
  • the wall changes its length when the medium in the tube 102 changes a temperature of the wall.
  • the tube 102 expands.
  • the tube 102 contracts.
  • the optical fiber 106 is fixedly connected to the tube 102 and is therefore stretched or compressed.
  • Length change can close the evaluation device 104 to the temperature of the medium.
  • the senor 100 has a screen for protecting the optical fiber fiber 106.
  • the sieve is arranged transversely to the tube in the tube.
  • the screen may retain solids from the media that could damage them upon impact with the optical fiber 106.
  • the screen has a smaller mesh size than a grating formed by the optical fiber 106.
  • Requirements for the shape and type of flow provides.
  • the senor technology allows a combined measurement of media pressure and flow.
  • Volume flow sensor 100 is only slightly dependent on the viscosity of the medium.
  • the sensor 100 can detect the volume flow Q (t) with high dynamics.
  • a tomographic evaluation method is the
  • Velocity profile u (r, phi, t) determined spatially resolved and time-resolved, whereby the integral volume flow V (t) can be determined.
  • the volume flow sensor 100 requires no calming sections and can be realized in a compact design. By an additional optical fiber 106, the static pressure can be measured using the existing transmitter 104. The volume flow sensor 100 can then detect the flow direction. The volume flow sensor 100 causes only low pressure losses.
  • the sensor 100 offers the possibility to record the temperature of the medium and to use it as additional information.
  • FIG. 2 shows an illustration of a sensor 100 for detecting at least one measurable measured variable of a medium in a tube 102 according to a
  • the sensor 100 essentially corresponds to the sensor in FIG. 1.
  • Optical fiber 106 is formed as a mass flow sensing fiber 200.
  • the mass flow sensing fiber 200 is arranged to flow around the medium in a direction transverse to a longitudinal direction of the tube 102 in the tube 102 in order to be used as the
  • Mass flow sensing fiber 200 The at least one
  • Mass flow sensing fiber 200 here forms a grid 202, the plane of which is arranged transversely to a longitudinal axis of the tube 102.
  • the at least one mass flow sensing fiber 200 forms a star-shaped grating 202. Since the grid 202 is composed of a plurality of mass flow detecting fibers 200, the available measuring distance is also multiplied. A small one
  • Elongation of the individual mass flow sensing fibers 200 adds up to a large overall change in length.
  • At least one of the optical fibers 106 is as
  • Temperature detection fiber 204 is formed.
  • the 204 is arranged in the longitudinal direction of the tube 102.
  • Temperature sensing fiber 204 is mechanically coupled to tube 102 to detect as a measure a thermal expansion of tube 102 due to a temperature of the medium in tube 102.
  • Thermal expansion coefficient of the tube 102 can directly on a Temperature of the tube 102, and thus to the temperature of the medium in the tube 102 are closed.
  • At least one of the optical fibers 106 is formed as a pressure sensing fiber 206.
  • the pressure sensing fiber 206 is disposed across the longitudinal direction of the tube 102.
  • the pressure sensing fiber 206 extends at least partially annularly along a wall 208 of the tube 102.
  • Pressure sensing fiber 206 is mechanically coupled to tube 102 to detect mechanical expansion of tube 102 due to static pressure of the medium in tube 102.
  • Optical fiber 106 or pressure sensing fiber 206 directly detects a change in an inner circumference of tube 102.
  • tube 102 becomes
  • Strength characteristics of a material of tube 102 may be used to directly deduce a force on tube 102 that is directly proportional to the static pressure of the medium in tube 102.
  • the senor 100 has a temperature sensor 210.
  • Temperature sensor 210 is designed as a probe.
  • the probe is embedded in the wall 208 of the tube 102.
  • the temperature sensor 210 serves as a reference to verify a temperature measurement using the temperature sensing fiber 204.
  • a signal drift on the temperature detection fiber 204 can be detected and compensated.
  • the temperature sensing fiber 204 and the pressure sensing fiber 206 are orthogonal to each other. As a result, they detect changes in size or changes in length of the tube 102 in different axes.
  • a temperature change of the medium causes a change in length of the tube 102 in all axes.
  • a pressure change of the medium causes only a widening of the diameter of the tube 102. Die
  • FIG. 2 shows a schematic structure of a measuring module 100.
  • the measuring module 100 has a temperature element 210 and a freely suspended grid 202 of individual optical fibers 106. Furthermore, the measuring module 100 has an optical waveguide 106, which is connected to the tube wall 208 as a pressure sensing fiber 206.
  • the measuring module 100 is as
  • Screw-in module 100 is formed.
  • the module 100 has a screw connection at both ends.
  • the acquisition of the velocity profile is done optically with several
  • Optical fiber elements 106 such as fiber optic Bragg grating sensors 106, which are arranged as a grid structure 202.
  • tomographic methods are used. During the measurement, in one embodiment, the effect is used that the intensity of the
  • Wavelength spectrum changes as a function of the elongation of the light guide 106 and this correlates directly to the flow velocity.
  • the senor 100 has at least two optically separate mass flow detection fibers 200.
  • the at least two mass flow sensing fibers 200 are individually with the
  • the mass flow sensing fibers 200 are distributed across a cross-sectional area of the tube 102 transverse to the longitudinal direction.
  • the evaluation device is designed to provide a first elongation of the first
  • mass flow detection fiber 200 and to determine the measurement using the expansions of the mass flow detection fibers 200.
  • Separate evaluation of the mass flow sensing fibers 200 allows for detection of different flow areas in the tube 102. For example, the flow on one side of the tube may be greater than on the other side of the tube. By detecting flow areas The mass n current Q (t) can be determined more accurately.
  • the separate detection on multiple mass flow sensing fibers 200 serves redundancy. Should one of the mass flow sensing fibers 200 have a defect, one of the other mass flow sensing fibers 200 or any other mass flow sensing fibers 200 may be used to measure the mass flow
  • the sensor 100 can be executed in several design variants depending on the measurement tasks.
  • the measuring principle is based on the introduction of a lattice 202 consisting of a plurality of individual fibers 106, so-called "fiber grade" fibers, into the measuring medium Due to the dynamic pressure, that is to say the momentum of the flow, the fibers 106 are stretched This elongation is proportional to the wavelength change of the maxima or minimum in the spectrum of the reflected or transmitted light and can be evaluated with the grating 202, a spatial distribution of the
  • the senor 100 has at least one further extensible optical fiber which can be evaluated by the evaluation device.
  • the further optical fiber extends at least in a portion of one of the mass flow sensing fibers 200 along the mass flow sensing fiber 200.
  • the further optical fiber is mechanically coupled to the mass flow sensing fiber 200 in the portion.
  • Mass flow sensing fiber 200 forms a bending beam for detecting a flow direction of the medium in the pipe.
  • Bending beam is aligned in the longitudinal direction. As the medium flows through the tube 102, the bending beam is bent. This is the one
  • Fiber optic fiber 106 extending on the downstream side of the
  • Bending beam is arranged.
  • the optical fiber fiber 106 disposed on the upstream side of the bending beam is compressed. That is, the downstream optical fiber fiber 106 becomes longer and the
  • upstream optical fiber 106 of the bending beam is shorter. From the difference in length, a direction of the flow can be determined.
  • a second fiber 106 may be used, which is coupled to the first fiber 106 on an intermediate carrier or by an adhesive layer.
  • the structure of two fibers 106 and the intermediate layer forms a bending beam, which is structurally designed so that the intermediate layer forms the neutral line of the bending beam.
  • a fiber 106 is stretched, the other compressed, so that an identification of the flow direction can take place.
  • the bending or stretching caused by the dynamic pressure is calculated as a difference signal between the strains of both fibers. By summation of the two strains, the temperature-induced strain can be determined and made plausible with the temperature element 210.
  • the static pressure can be determined according to the same optical principle with a separate fiber 106, which can be referred to as pressure measuring fiber 206.
  • the pressure measuring fiber 206 is in this case firmly connected to the conduit wall 208.
  • the pressure information is from the widening of the
  • the medium pressure causes a change in the electrical primitiveivity at a defined reflection point or transmission point.
  • the reflection factor or the transmission factor of the optical path changes, so that the pressure can be measured.
  • Cross influences on the optical properties of the light path can be compensated, in which a fiber 106 immediately adjacent to
  • FIG. 3 shows a representation of a star-shaped grid 202 according to a
  • the grating 202 substantially corresponds to the grating in Fig. 2.
  • the optical fiber 106 of the grating 202 all meet at the center of the tube. Between the optical fibers 106 of the grating 202 results in a mesh size of the grating 202. In this
  • Embodiment are four optical fibers 106 at regular intervals arranged diametrically across the pipe.
  • the fiber optic fiber 106 divides a cross-sectional area of the tube into equal segments.
  • FIG. 4 shows a representation of a linear grating 202 according to one
  • Embodiment of the present invention is the at least one
  • Mass flow detection fiber 200 disposed in, arranged substantially parallel to each other grid lines of the grid 202.
  • the grid lines of the grid 202 have equal distances to each other.
  • the optical fiber 106 of the grating 202 is arranged at regular intervals.
  • the optical fibers 106 are arranged vertically in the tube. In the illustrated embodiment, three optical fibers 106 share the
  • the two outer optical fiber fibers 106 are shorter than the centrally disposed optical fiber fiber 106 disposed diametrically across the pipe.
  • the outer optical fiber fibers 106 may be used to detect edge portions of the flow in the pipe.
  • FIG. 5 shows an illustration of a cross-shaped grid 202 according to an embodiment of the present invention.
  • the grid 202 has a first group 500 of grid lines and at least a second group 502 of FIG.
  • the grid lines of the first group 500 are aligned substantially parallel to each other.
  • the grid lines of the second group 502 are aligned substantially parallel to each other.
  • the grid lines of the first group 500 and the grid lines of the second group 502 are arranged at an angle to each other. In this embodiment, the grid lines of the groups 500, 502 are perpendicular to each other.
  • the first group 500 corresponds to the three mutually parallel optical fibers 106 in FIG. 4.
  • the second group 502 is arranged transversely to the first group 500 and has five optical fibers 106.
  • the grid 202 divides the cross-sectional area of the tube into a plurality of sub-areas through which the medium can flow through the grid 202. By the grid 202 shown here, the flow can be resolved very accurately. In other words, Figures 3, 4 and 5 represent different
  • FIG. 6 shows a flow chart of a method 600 for detecting at least one measurable measured variable of a medium in a tube according to an exemplary embodiment of the present invention.
  • the method comprises a step 602 of detecting and a step 604 of determining.
  • step 602 of the acquisition an elongation of at least one in the tube becomes
  • step 604 of determining the
  • the sensor 100 presented here can be used in all applications in which the flow measurement and / or the pressure measurement of the fluid makes sense. For example, in mobile machines for valves and pumps or in industrial engineering.
  • an exemplary embodiment comprises an "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

L'invention concerne un capteur (100) pour capter au moins une grandeur de mesure mesurable d'un agent dans un tube (102), le capteur (100) présentant au moins une fibre optique (106) extensible pouvant être évaluée par un dispositif d'évaluation (104), cette fibre optique étant disposée dans le tube (102), afin de capter la grandeur de mesure.
PCT/EP2015/058625 2014-05-02 2015-04-22 Capteur et procédé pour capter au moins une grandeur de mesure mesurable d'un agent dans un tube Ceased WO2015165782A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014208277.3A DE102014208277A1 (de) 2014-05-02 2014-05-02 Sensor und Verfahren zum Erfassen zumindest einer messbaren Messgröße eines Mediums in einem Rohr
DE102014208277.3 2014-05-02

Publications (2)

Publication Number Publication Date
WO2015165782A2 true WO2015165782A2 (fr) 2015-11-05
WO2015165782A3 WO2015165782A3 (fr) 2016-02-04

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PCT/EP2015/058625 Ceased WO2015165782A2 (fr) 2014-05-02 2015-04-22 Capteur et procédé pour capter au moins une grandeur de mesure mesurable d'un agent dans un tube

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DE (1) DE102014208277A1 (fr)
WO (1) WO2015165782A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115265677A (zh) * 2022-07-07 2022-11-01 中国船舶重工集团公司第七一五研究所 一种基于异形等强度梁的光纤光栅靶式流量计及其使用方法
CN115824489A (zh) * 2022-12-19 2023-03-21 昆山联滔电子有限公司 一种头戴式装置的夹持力测量系统及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017220225A1 (de) * 2017-11-14 2019-05-16 Robert Bosch Gmbh Laufzeitmessung mittels Sensoranordnung, Arbeitsgerät und Messverfahren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221119A (ja) * 1982-06-17 1983-12-22 Nippon Denso Co Ltd 気体流量測定装置
US8875558B2 (en) * 2009-09-29 2014-11-04 Siemens Aktiengesellschaft System for determining exhaust gas volume

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115265677A (zh) * 2022-07-07 2022-11-01 中国船舶重工集团公司第七一五研究所 一种基于异形等强度梁的光纤光栅靶式流量计及其使用方法
CN115824489A (zh) * 2022-12-19 2023-03-21 昆山联滔电子有限公司 一种头戴式装置的夹持力测量系统及方法

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WO2015165782A3 (fr) 2016-02-04
DE102014208277A1 (de) 2015-11-19

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