CN114509192A - Bow net contact force detection device suitable for urban rail transit - Google Patents
Bow net contact force detection device suitable for urban rail transit Download PDFInfo
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- CN114509192A CN114509192A CN202011282562.1A CN202011282562A CN114509192A CN 114509192 A CN114509192 A CN 114509192A CN 202011282562 A CN202011282562 A CN 202011282562A CN 114509192 A CN114509192 A CN 114509192A
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- optical fiber
- pantograph
- fiber sensor
- contact force
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 70
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- 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
- G01L1/242—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 the material being an optical fibre
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The application provides a bow net contact force detection device suitable for urban rail transit, include: the optical fiber sensor is used for acquiring optical signal data between a pantograph and a contact line above a roof of the vehicle, is of a gasket type structure and is fixedly mounted on the pantograph through a fastener; and the optical fiber sensing analyzer is electrically connected with the optical fiber sensor and analyzes the optical signal data to obtain contact force data between the pantograph and the contact wire. The problem of in the urban rail transit among the related art detect the contact force between pantograph and the contact wire sensor install on the pantograph, need change former pantograph structure, and then lead to the potential safety hazard height, and the data that obtain are unstable, the accuracy is not high is solved.
Description
Technical Field
The application relates to the technical field of bow net hard point detection, in particular to a bow net contact force detection device suitable for urban rail transit.
Background
In the field of urban rail transit, the dynamic contact force between a pantograph and a contact line is one of important parameters for current collection of the pantograph, and the abnormal abrasion of the pantograph and the contact line can be increased and the service life of the pantograph and the contact line can be shortened due to overlarge pressure; too low a pressure may cause poor contact, unstable power supply, and spark or arc, resulting in burning of the contact wire. In the prior art, a resistance type or piezoelectric type sensor is arranged on a pantograph to realize the measurement of contact force, the original pantograph structure needs to be changed, DC1800V insulation protection and IP67 grade protection need to be carried out, the potential safety hazard is high, and measured data are also easily influenced by temperature and electromagnetic interference, so the method is not suitable for being applied to the field of urban rail transit.
Aiming at the problems that in the related art, a sensor for detecting the contact force between a pantograph and a contact wire in urban rail transit is arranged on the pantograph, the original pantograph structure needs to be changed, so that the potential safety hazard is high, and the acquired data are unstable and low in accuracy, an effective solution is not available at present.
Disclosure of Invention
The embodiment of the application provides a bow net contact force detection device suitable for urban rail transit to at least, solve among the correlation technique urban rail transit in detect the sensor of contact force between pantograph and the contact wire and install on the pantograph, need to change former pantograph structure, and then lead to the potential safety hazard height, and the unstable, the not high problem of accuracy of data of acquireing.
According to an embodiment of the present application, there is provided a bow net contact force detection device suitable for urban rail transit, including: the optical fiber sensor is used for acquiring optical signal data between a pantograph and a contact line above a roof of a vehicle, is of a gasket type structure, and is fixedly installed at a stress point of the pantograph through a fastener; and the optical fiber sensing analyzer is electrically connected with the optical fiber sensor and analyzes the optical signal data to obtain contact force data between the pantograph and the contact line.
Optionally, the apparatus further comprises: the overhead distribution box is arranged on the pantograph and is electrically connected with the optical fiber sensor and the roof distribution box; and the roof junction box is arranged on a roof of the vehicle and is electrically connected with the upper bow junction and the optical fiber sensing analyzer.
Optionally, the optical fiber sensor is in a rectangular gasket structure, the optical fiber sensor is provided with at least two bolt holes, and the optical fiber sensor is fixed to a force bearing point of the pantograph through bolts.
Optionally, the optical fiber sensor is an L-shaped gasket structure including two bending portions, the two bending portions are respectively provided with a bolt hole, and the optical fiber sensor is fixed at a force bearing point of the pantograph through a bolt.
Optionally, the optical fiber sensor is a U-shaped gasket structure including three bending portions, the three bending portions are respectively provided with a bolt hole, and the optical fiber sensor is fixed to a force bearing point of the pantograph through a bolt.
Optionally, the fiber optic sensor is further configured to: and acquiring waveguide signals of light incidence and light emergence at different moments, wherein the waveguide signals are changed along with the magnitude of contact force between the pantograph and the contact line.
Optionally, the fiber sensing analyzer comprises: the photoelectric module is used for converting the waveguide signal acquired by the optical fiber sensor into a wavelength value; and the processing unit is used for converting the wavelength value into corresponding contact force data.
According to the bow net contact force detection device applicable to urban rail transit, optical signal data between a pantograph and a contact wire above a roof of a vehicle are acquired by using an optical fiber sensor, wherein the optical fiber sensor is of a gasket type structure and is fixedly mounted on the pantograph through a fastening piece; and the optical fiber sensing analyzer is electrically connected with the optical fiber sensor and analyzes the optical signal data to obtain contact force data between the pantograph and the contact wire. The problems that in the prior art, the conventional pantograph structure needs to be changed when a sensor for detecting the contact force between a pantograph and a contact wire in urban rail transit is installed on the pantograph, so that the potential safety hazard is high, the acquired data are unstable and the accuracy is low are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a block diagram of an alternative bow net contact force detection device suitable for urban rail transit according to an embodiment of the present application;
FIG. 2 is an installation schematic diagram of an alternative bow net contact force detection device suitable for urban rail transit according to an embodiment of the application;
fig. 3 is an installation schematic diagram of an alternative bow net contact force detection device suitable for urban rail transit according to an embodiment of the application.
Description of the reference numerals
1, an optical fiber sensor; 2, a junction box is arranged on the arch; 3, a roof junction box; 4, a fiber analyzer; and 5, a pantograph.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
According to one embodiment of the application, a bow net contact force detection device suitable for urban rail transit is provided. Fig. 1 is a block diagram of an alternative bow net contact force detection device suitable for urban rail transit according to an embodiment of the present application, and fig. 2 is a schematic installation diagram of an alternative bow net contact force detection device suitable for urban rail transit according to an embodiment of the present application. As shown in fig. 1 and 2, the apparatus includes:
the optical fiber sensor 1 is used for acquiring optical signal data between a pantograph 5 above a roof of a vehicle and a contact line, wherein the optical fiber sensor 1 is of a gasket type structure and is fixedly arranged at a stress point of the pantograph 5 through a fastener;
and the optical fiber sensing analyzer 4 is electrically connected with the optical fiber sensor 1 and analyzes the optical signal data to obtain contact force data between the pantograph 5 and the contact wire.
In an alternative embodiment, the optical fiber sensors 1 can be respectively installed on two sides of the pantograph 5, two optical fiber sensors are installed on each side, so that four optical fiber sensors 1 can be installed on one pantograph 5, and four stress points are respectively arranged on the front sliding plate and the rear sliding plate, thereby effectively improving the measurement accuracy.
The optical fiber sensor 1 provided in the embodiment of the application can be an optical fiber type strain sensor, has the advantages of being passive, free of electricity, resistant to electromagnetic interference, small in size, long-distance in optical signal transmission and the like, and can avoid safety risks of dynamic and high-voltage operation of a pantograph when the contact force is measured.
In an alternative embodiment, as shown in fig. 2, the apparatus further comprises: the overhead distribution box 2 is arranged on the pantograph 5 and is electrically connected with the optical fiber sensor 1 and the roof distribution box 3; and the roof junction box 3 is arranged on the roof of the vehicle and is electrically connected with the overhead junction box 2 and the optical fiber sensing analyzer 4. In fig. 2, TC denotes a trailer with a cab, M denotes a car without a pantograph, and MP denotes a car with a pantograph.
Optical fiber sensors 1 (used as pressure sensors) are arranged at four stress points of the front and rear sliding plates of the pantograph, an optical fiber distribution box (namely a roof distribution box 3) which is protected to the roof by a corrugated pipe is used, and the optical fiber distribution box is divided into two paths of optical fibers and then the optical fibers are sent to an optical fiber sensing analyzer 4. The optical fiber sensor 1 detects changes of light incident and emergent waveguides, the changes are transmitted to the optical fiber analyzer in sequence through the overhead distribution box and the roof distribution box, an optoelectronic module in the optical fiber analyzer converts optical signals of the sensor into wavelength values, the processing unit converts the wavelength values into corresponding physical measurement quantities, and urban rail transit pantograph-catenary contact force detection is achieved through the advantages of high sensitivity, large dynamic range and good linearity.
In an alternative embodiment, as shown in fig. 3, the optical fiber sensor 1 is in a rectangular gasket structure, at least two bolt holes are provided in the optical fiber sensor 1, and the optical fiber sensor 1 is fixed at the force bearing point of the pantograph 5 by bolts.
Alternatively, the optical fiber sensor 1 may be an L-shaped gasket structure including two bending portions, the two bending portions are respectively provided with bolt holes, and the optical fiber sensor is fixed at the force bearing point of the pantograph 5 by bolts.
Optionally, the optical fiber sensor 1 may also be a U-shaped gasket structure including three bending portions, the three bending portions are respectively provided with a bolt hole, and the optical fiber sensor 1 is fixed at a force bearing point of the pantograph 5 through a bolt.
Optionally, the fiber sensor 1 is further configured to: and acquiring waveguide signals of light incidence and light emergence at different moments, wherein the waveguide signals change along with the magnitude of the contact force between the pantograph 5 and the contact line.
Optionally, the optical fiber sensing analyzer 4 includes: the photoelectric module is used for converting the waveguide signal acquired by the optical fiber sensor 1 into a wavelength value; and the processing unit is used for converting the wavelength value into corresponding contact force data.
According to the bow net contact force detection device applicable to urban rail transit, optical signal data between a pantograph and a contact wire above a vehicle roof are acquired by using an optical fiber sensor, wherein the optical fiber sensor is of a gasket type structure and is fixedly mounted on the pantograph through a fastening piece; and the optical fiber sensing analyzer is electrically connected with the optical fiber sensor and analyzes the optical signal data to obtain contact force data between the pantograph and the contact wire. The problems that in the prior art, the conventional pantograph structure needs to be changed, the potential safety hazard is high, the acquired data are unstable and the accuracy is low when a sensor for detecting the contact force between a pantograph and a contact wire in urban rail transit is installed on the pantograph are solved, the pantograph structure does not need to be changed when the optical fiber sensor with the gasket type structure is installed on the pantograph, the optical fiber sensors with different structures can be customized according to the structure of the pantograph, the installation is convenient, the structure is stable, the sensor can be applied under severe conditions of strong electromagnetic interference, high lightning stroke, flammability, explosiveness and the like, the safe application under an insulation condition is met, and high-precision dynamic contact force measurement is realized.
Alternatively, in this embodiment, a person skilled in the art may understand that all or part of the steps in the methods of the foregoing embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (7)
1. The utility model provides a bow net contact force detection device suitable for urban rail transit which characterized in that includes:
the optical fiber sensor (1) is used for acquiring optical signal data between a pantograph (5) above a roof of a vehicle and a contact line, wherein the optical fiber sensor (1) is of a gasket type structure and is fixedly mounted at a stress point of the pantograph (5) through a fastener;
and the optical fiber sensing analyzer (4) is electrically connected with the optical fiber sensor (1) and analyzes the optical signal data to obtain contact force data between the pantograph (5) and the contact line.
2. The apparatus of claim 1, further comprising:
an upper pantograph distribution box (2) which is arranged on the pantograph (5) and is electrically connected with the optical fiber sensor (1) and the roof distribution box (3);
and the roof junction box (3) is arranged on a roof of the vehicle and is electrically connected with the bow junction box (2) and the optical fiber sensing analyzer (4).
3. The device according to claim 1, characterized in that the optical fiber sensor (1) is a rectangular gasket structure, at least two bolt holes are arranged on the optical fiber sensor (1), and the optical fiber sensor (1) is fixed on the force bearing point of the pantograph (5) through bolts.
4. The device according to claim 1, wherein the optical fiber sensor (1) is an L-shaped gasket structure comprising two bending portions, the two bending portions are respectively provided with bolt holes, and the optical fiber sensor (1) is fixed on a force bearing point of the pantograph (5) through bolts.
5. The device according to claim 4, characterized in that the optical fiber sensor (1) is a U-shaped gasket structure comprising three bending portions, the three bending portions are respectively provided with bolt holes, and the optical fiber sensor (1) is fixed on the stress point of the pantograph (5) through bolts.
6. The device according to claim 1, characterized in that the fiber optic sensor (1) is further adapted to:
and acquiring waveguide signals of light incidence and light emergence at different moments, wherein the waveguide signals are changed along with the magnitude of the contact force between the pantograph (5) and the contact line.
7. The apparatus according to claim 6, wherein the fiber sensing analyzer (4) comprises:
the photoelectric module is used for converting the waveguide signal acquired by the optical fiber sensor (1) into a wavelength value;
and the processing unit is used for converting the wavelength value into corresponding contact force data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282562.1A CN114509192A (en) | 2020-11-17 | 2020-11-17 | Bow net contact force detection device suitable for urban rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282562.1A CN114509192A (en) | 2020-11-17 | 2020-11-17 | Bow net contact force detection device suitable for urban rail transit |
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| CN114509192A true CN114509192A (en) | 2022-05-17 |
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| CN202011282562.1A Pending CN114509192A (en) | 2020-11-17 | 2020-11-17 | Bow net contact force detection device suitable for urban rail transit |
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| CN208333723U (en) * | 2018-04-26 | 2019-01-04 | 上海拜安传感技术有限公司 | Optical fiber type pantograph pan monitoring device |
| CN109990939A (en) * | 2019-05-10 | 2019-07-09 | 南京工程学院 | A kind of device of roller bolt stress in triangulation feed screw nut |
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2020
- 2020-11-17 CN CN202011282562.1A patent/CN114509192A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271741A (en) * | 2013-06-19 | 2013-09-04 | 华中科技大学 | Sleeping posture monitor |
| US20180367215A1 (en) * | 2014-07-31 | 2018-12-20 | iSenseCloud, Inc. | Fiber Optic Patch And Voltage Conditioning |
| CN204405222U (en) * | 2015-01-14 | 2015-06-17 | 四川安普光控科技有限公司 | A kind of series-parallel combined-type fiber grating sensing system |
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