CN202501868U - On-line detection system for fiber grating railway contact network - Google Patents
On-line detection system for fiber grating railway contact network Download PDFInfo
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- CN202501868U CN202501868U CN2012200560014U CN201220056001U CN202501868U CN 202501868 U CN202501868 U CN 202501868U CN 2012200560014 U CN2012200560014 U CN 2012200560014U CN 201220056001 U CN201220056001 U CN 201220056001U CN 202501868 U CN202501868 U CN 202501868U
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Abstract
The utility model discloses an on-line detection system for fiber grating railway contact network. The on-line detection system comprises a detection vehicle, a pantograph, sensors, an industrial control computer, and a fiber grating demodulation instrument. The sensors comprise a fiber grating strain sensor, a fiber grating acceleration sensor, a fiber grating temperature sensor and a fiber grating displacement sensor, wherein signal output terminals of the fiber grating strain sensor, the fiber grating acceleration sensor, the fiber grating temperature sensor and the fiber grating displacement sensor are all connected with input terminals of the fiber grating demodulation instrument via optical fiber cables. In the utility model, fiber grating sensors are used to replace original simulated sensors, so that transmission speed is fast, transmission loss is small, anti-interference capability is strong, measuring precision is high, and reliable performance is good, thereby improving safety of the system, being flexible and convenient in installation, and decreasing the weight of the whole system.
Description
Technical field
The utility model relates to a kind of railway contact line on-line detecting system, relates in particular to a kind of fiber grating railway contact line on-line detecting system that the railway contact line parameter is adopted fiber-optic grating sensor.
Background technology
Railway contact line is a kind of supply line of special shape, and its task is to guarantee to electric locomotive reliable continual electric energy to be provided.In the operation process of electric railway, must carry out a series of Contact Line Detection work,, guarantee good being flowed so that in time scent a hidden danger and overcome the problem of existence.The main contact that adopts of existing railway contact line inspection detects; It is good that contact detects real-time performance; Can test the kinetic parameter that the geometric parameter of osculatory contacts with bow net simultaneously; Test obtains bow net contact pressure performance graph, can portray the dynamic process of bow net contact operation in detail, reacts the properties of flow that receives of osculatory preferably.
Traditional railway contact net on-line detecting system comprises equipment such as inspection vehicle, pantograph, analog sensor and industrial computer; Pantograph is installed on the inspection vehicle roof; Analog sensor is installed on the pantograph; Industrial computer is installed in the said inspection vehicle car; The output signal of analog sensor outputs to industrial computer after handling through amplifier and analog to digital conversion circuit, has following defective: because the measuring equipment that is installed on the pantograph all is in 27 kilovolts high pressure and open-air state, high-pressure side pressure and acceleration test sensor are analog quantity; Faint transducing signal is disturbed by the instantaneous hf and hv pulse of generations such as pantograph off-line very easily, is difficult to catch useful transducing signal; There is temperature drift in the high-pressure side sensor amplifier, and faint transducing signal amplifies back temperature influence aggravation; The single-chip microcomputer signal Processing is subject to momentary pulse and disturbs the deadlock phenomenon; The signal transmission adopts cable to connect between the high-pressure side equipment, and loss of signal is harassed greatly and easily.These all cause the kinetic test parameter error to increase, and can not truly reflect the bow net situation.In addition, because sensor and sensor processing system all are installed on the pantograph, increased the additional mass of slide plate greatly, security of system reduces; Need the high-low pressure xegregating unit simultaneously, cause the high-pressure system complex structure, the maintaining difficulty, cost is higher.
Summary of the invention
The purpose of the utility model provides a kind of fiber grating railway contact line on-line detecting system that the railway contact line parameter is adopted fiber-optic grating sensor with regard to being in order to address the above problem.
The utility model is realized above-mentioned purpose through following technical scheme:
The utility model comprises inspection vehicle, pantograph, sensor, industrial computer and display; Said pantograph is installed on said inspection vehicle roof; Said sensor is installed on the said pantograph; Said industrial computer is installed in the said inspection vehicle car, and the VT of said industrial computer is connected with the signal input part of said display; Said detection system also comprises fiber Bragg grating (FBG) demodulator; Said sensor comprises fiber Bragg grating strain sensor, optical fibre grating acceleration sensor, fiber-optical grating temperature sensor and fiber grating displacement sensor; Said fiber Bragg grating strain sensor is installed on the support of said pantograph; Said optical fibre grating acceleration sensor is installed in center, pantograph collector head side; Said fiber-optical grating temperature sensor is installed in said pantograph body upper surface, and said fiber grating displacement sensor is installed in the rotating shaft below the said pantograph; The signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator through optical fiber cable; The output terminal of said fiber Bragg grating (FBG) demodulator is connected with the input end of said industrial computer.
Further, said fiber Bragg grating strain sensor is four, is installed on respectively on four supports of said pantograph.
Further, said fiber Bragg grating strain sensor is installed in and forms the pantograph pressure measuring module on the flexible member, and said pantograph pressure measuring module is installed on the support of said pantograph.
Particularly, can adopt following structure to be connected between sensor and the said fiber Bragg grating (FBG) demodulator: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator through the said optical fiber cable back that is connected in series.
Also can adopt following structure to be connected between sensor and the said fiber Bragg grating (FBG) demodulator: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected in parallel through the input end of independently said optical fiber cable and said fiber Bragg grating (FBG) demodulator separately respectively.
Can also adopt following structure to be connected between sensor and the said fiber Bragg grating (FBG) demodulator: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator with the structure that parallel connection mixes with series connection through said optical fiber cable.
The beneficial effect of the utility model is:
1, the utility model adopts fiber-optic grating sensor to replace original analog sensor, is installed in to have only fiber-optic grating sensor and optical fiber cable on the pantograph, and high-pressure side equipment significantly reduces, and the additional mass of pantograph alleviates greatly, has improved the security of system performance;
2, optical fiber cable self can play good high-low pressure buffer action, or else needs heavy high-low pressure xegregating unit;
3, optical fiber is in passing photoreduction process, to not influence of wavelength, not influenced by the instantaneous hf and hv pulse of generation such as bow net off-line, and anti-electromagnetic interference capability is strong;
4, the light intensity fluctuation in the fiber grating sensing system is to not influence of sensing amount (wavelength), and promptly the fiber grating measuring accuracy is high, and unfailing performance is good;
5, optical fiber cable is faster than common cable transmission speed, loss is little;
6, the constant nonlinear effect influence of fiber-optic grating sensor;
7, fiber-optic grating sensor connecting mode variation can series, parallel or series-parallel connection, receives on the fiber Bragg grating (FBG) demodulator.
To sum up, the utlity model has good practicality, is desirable railway contact line on-line detecting system, and its superiority is that traditional railway contact net on-line detecting system is unrivaled, for accurate monitoring, the safety management of the railway system lays a solid foundation.
Description of drawings
Accompanying drawing is the structured flowchart of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Shown in accompanying drawing; The utility model comprises inspection vehicle, pantograph, four fiber Bragg grating strain sensor, optical fibre grating acceleration sensor, fiber-optical grating temperature sensor and fiber grating displacement sensor, fiber Bragg grating (FBG) demodulator, industrial computer, display and speed pickups; Pantograph is installed on the inspection vehicle roof; Four fiber Bragg grating strain sensors are installed in and form the pantograph pressure measuring module on the flexible member; The pantograph pressure measuring module is installed on four supports of pantograph; Optical fibre grating acceleration sensor is installed in center, pantograph collector head side, and fiber-optical grating temperature sensor is installed in pantograph body upper surface, and fiber grating displacement sensor is installed in the rotating shaft below the pantograph; Pantograph, four fiber Bragg grating strain sensors, optical fibre grating acceleration sensor and fiber-optical grating temperature sensors are formed the roof high-pressure section jointly, and fiber grating displacement sensor is the roof low-pressure section; Industrial computer is installed in the inspection vehicle car, and the VT of industrial computer is connected through data line with the signal input part of display, and industrial computer and display are in-vehicle device; The signal output part of the signal output part of four fiber Bragg grating strain sensors, the signal output part of optical fibre grating acceleration sensor, fiber-optical grating temperature sensor and the signal output part of fiber grating displacement sensor respectively through separately independently the input end of optical fiber cable and fiber Bragg grating (FBG) demodulator be connected in parallel; The signal output part of fiber Bragg grating (FBG) demodulator is connected through netting twine with the signal input part of industrial computer, and the signal output part of speed pickup is connected through cable with the signal input part of industrial computer; Speed pickup is installed on the wheel, is equipment under the car.
Shown in accompanying drawing; The ultimate principle of the utility model is following: through the pressure calibration to four fiber Bragg grating strain sensors; The pressure that the test contact net is produced when contacting with pantograph according to the size of 4 contact pressures, can analog computation go out the stagger size.Optical fibre grating acceleration sensor is measured the impact size that pantograph receives, i.e. hard spot in operational process.Fiber-optical grating temperature sensor carries out temperature compensation to other fiber-optic grating sensor because of the systematic jitters that temperature effect causes.Fiber grating displacement sensor is converted into the measurement of angle that needs through the mechanical gear transmission with the straight-line displacement measurement, quantizes the height of contact wire value through the corner of measuring the pantograph rotating shaft.Fiber Bragg grating (FBG) demodulator provides stable light source and light wave that fiber grating is changed carries out real-time demodulation, calculates the sensing amount that fiber-optic grating sensor is gathered.The data that industrial control computer transmits fiber Bragg grating (FBG) demodulator are carried out the digital filtering processing, COMPREHENSIVE CALCULATING draws contact pressure, stagger, hard spot, lead height, the speed equivalence that Contact Line Detection needs, and these values are shown, store, print.Package unit forms the modernized traverse measurement system of an on-line measurement railway contact line parameter, plays a significant role in railway system's management, in safeguarding.
Claims (6)
1. fiber grating railway contact line on-line detecting system; Comprise inspection vehicle, pantograph, sensor, industrial computer and display; Said pantograph is installed on said inspection vehicle roof; Said sensor is installed on the said pantograph, and said industrial computer is installed in the said inspection vehicle car, and the VT of said industrial computer is connected with the signal input part of said display; It is characterized in that: said detection system also comprises fiber Bragg grating (FBG) demodulator; Said sensor comprises fiber Bragg grating strain sensor, optical fibre grating acceleration sensor, fiber-optical grating temperature sensor and fiber grating displacement sensor; Said fiber Bragg grating strain sensor is installed on the support of said pantograph; Said optical fibre grating acceleration sensor is installed in center, pantograph collector head side; Said fiber-optical grating temperature sensor is installed in said pantograph body upper surface, and said fiber grating displacement sensor is installed in the rotating shaft below the said pantograph; The signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator through optical fiber cable; The output terminal of said fiber Bragg grating (FBG) demodulator is connected with the input end of said industrial computer.
2. fiber grating railway contact line on-line detecting system according to claim 1 is characterized in that: said fiber Bragg grating strain sensor is four, is installed on respectively on four supports of said pantograph.
3. fiber grating railway contact line on-line detecting system according to claim 1 and 2; It is characterized in that: said fiber Bragg grating strain sensor is installed in and forms the pantograph pressure measuring module on the flexible member, and said pantograph pressure measuring module is installed on the support of said pantograph.
4. fiber grating railway contact line on-line detecting system according to claim 1 is characterized in that: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator after being connected in series through a said optical fiber cable.
5. fiber grating railway contact line on-line detecting system according to claim 1 is characterized in that: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected in parallel through the input end of independently said optical fiber cable and said fiber Bragg grating (FBG) demodulator separately respectively.
6. fiber grating railway contact line on-line detecting system according to claim 1 is characterized in that: the signal output part of the signal output part of said fiber Bragg grating strain sensor, the signal output part of said optical fibre grating acceleration sensor, said fiber-optical grating temperature sensor and the signal output part of said fiber grating displacement sensor are connected with the input end of said fiber Bragg grating (FBG) demodulator with the structure that parallel connection mixes with series connection through said optical fiber cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200560014U CN202501868U (en) | 2012-02-21 | 2012-02-21 | On-line detection system for fiber grating railway contact network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200560014U CN202501868U (en) | 2012-02-21 | 2012-02-21 | On-line detection system for fiber grating railway contact network |
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| CN2012200560014U Expired - Fee Related CN202501868U (en) | 2012-02-21 | 2012-02-21 | On-line detection system for fiber grating railway contact network |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528517A (en) * | 2013-10-17 | 2014-01-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system |
| CN103528624A (en) * | 2013-10-18 | 2014-01-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Optical fiber type comprehensive on-line real-time pantograph detection and control system |
| CN105043443A (en) * | 2015-07-03 | 2015-11-11 | 大连交通大学 | Vehicle body stress testing device for high speed train and work method thereof |
| CN105067041A (en) * | 2015-08-19 | 2015-11-18 | 华东交通大学 | Overhead line state monitoring device and control method therefor |
| CN106017576A (en) * | 2016-08-08 | 2016-10-12 | 成都骏盛科技有限责任公司 | Dynamic detection system of overhead line system |
| CN111504821A (en) * | 2020-06-04 | 2020-08-07 | 西南交通大学 | Fatigue test device and method for pantograph head suspension system |
| CN113252116A (en) * | 2021-06-28 | 2021-08-13 | 中铁第四勘察设计院集团有限公司 | Online monitoring system for dynamic characteristics of cantilever of contact network and installation method thereof |
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2012
- 2012-02-21 CN CN2012200560014U patent/CN202501868U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528517A (en) * | 2013-10-17 | 2014-01-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Optical fiber type on-line sectional real-time carbon pantograph slider abrasion detection system |
| CN103528517B (en) * | 2013-10-17 | 2016-06-29 | 中国航空工业集团公司北京长城计量测试技术研究所 | Optical fiber type pantograph carbon slide wears away online subregion real-time detecting system |
| CN103528624A (en) * | 2013-10-18 | 2014-01-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Optical fiber type comprehensive on-line real-time pantograph detection and control system |
| CN103528624B (en) * | 2013-10-18 | 2016-03-30 | 中国航空工业集团公司北京长城计量测试技术研究所 | The comprehensive on-line real-time measuremen of optical fiber type pantograph and control system |
| CN105043443A (en) * | 2015-07-03 | 2015-11-11 | 大连交通大学 | Vehicle body stress testing device for high speed train and work method thereof |
| CN105043443B (en) * | 2015-07-03 | 2017-10-20 | 中国铁路总公司 | A kind of high-speed train body stress test device and its method of work |
| CN105067041A (en) * | 2015-08-19 | 2015-11-18 | 华东交通大学 | Overhead line state monitoring device and control method therefor |
| CN106017576A (en) * | 2016-08-08 | 2016-10-12 | 成都骏盛科技有限责任公司 | Dynamic detection system of overhead line system |
| CN111504821A (en) * | 2020-06-04 | 2020-08-07 | 西南交通大学 | Fatigue test device and method for pantograph head suspension system |
| CN113252116A (en) * | 2021-06-28 | 2021-08-13 | 中铁第四勘察设计院集团有限公司 | Online monitoring system for dynamic characteristics of cantilever of contact network and installation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20130221 |