CN102295015A - Non-contact bow net arcing detection system - Google Patents
Non-contact bow net arcing detection system Download PDFInfo
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- CN102295015A CN102295015A CN2011101353346A CN201110135334A CN102295015A CN 102295015 A CN102295015 A CN 102295015A CN 2011101353346 A CN2011101353346 A CN 2011101353346A CN 201110135334 A CN201110135334 A CN 201110135334A CN 102295015 A CN102295015 A CN 102295015A
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Abstract
The invention discloses a non-contact bow net arcing detection system, comprising an optical imaging measurement device, an ultraviolet light electric sensing device and a data analyzing and processing system, wherein the optical imaging measurement device collects the optical signal of bow net arcing; the ultraviolet light electric sensing device converts the optical signal into a pulse current signal; the data analyzing and processing system analyzes the pulse current signal into arcing duration, intensity and occurrence frequency of each spacing arcing; meanwhile, by combining information in the existing database, the zone in which arcing is generated is fixed precisely. In the invention, the ultraviolet photoelectric detection principle is applied to the bow net arcing detection technology for the first time, and a specific wavelength given out by the bow net arcing serves as a detection characteristic of bow net arcing. Through detecting the ultraviolet light given out when the bow net arcing happens, whether bow net arcing happens can be judged. According to a corresponding algorithm, parameters such as arcing time, intensity and the like are calculated. In addition, the arcing site can be fixed by the existing database, which brings convenience for subsequent line maintenance and reform.
Description
Technical field
The present invention relates to a kind of contactless bow net arcing checking system.
Background technology
In electrified railway, the operation of electric locomotive need be obtained electric energy with contacting of contact wire by the pantograph at its top.Pantograph and contact wire contact condition directly affect the current carrying quality of locomotive, also are the concentrated expression of contact system geometrical characteristic simultaneously.The contact wire hard spot of actual condition or irregular wear will directly cause the contact of bad bow net, thus the arcing of generation and cause following situation to take place: and (1) causes the electric locomotive unstable running; (2) cause abnormal wear between the bow net; (3) produce electromagnetic interference; (4) make traction electric machine rectification worsening condition; (5) in power circuit, cause over voltage.Therefore, need to detect the arcing situation between the bow net, thereby ensure the electric locomotive safe and reliable operation, instruct corresponding handling labor.
Also do not come out at bow net arcing detecting device specially both at home and abroad at present, present stage mainly is to detect the bow net off-line state, in when, between the bow net off-line taking place when, just can produce the bow net arcing, but this method measurement parameter is not concrete, whether bow net arcing phenomenon having taken place in the time of can not detecting off-line, more can not provide parameters such as arc time, intensity, has had certain limitation.
The method that detects the bow net off-line state mainly contains:
(1) current method
This method is that zero situation is as the judgment basis that the bow net off-line takes place with pantograph electric current and differential value both thereof, electric current flows along contact system-pantograph-current transformer-electrical motor-rail, if the bow net off-line takes place, the electric current that flows through pantograph just can vanishing, but therefore electric current is an alternating current, also might not be zero during off-line, but this moment, its differential value also be zero, so can detect the bow net off-line state.
(2) electric-resistivity method
This method during according to the bow net off-line between lead resistance become big principle suddenly and detect, in case the off-line phenomenon takes place, resistance becomes big between bow net, electric current diminishes, and then detects off-lined signal.
(3) capacitance resistance method
This method is when measuring, and inserts two conies and a resistance between pantograph and ground, utilizes cond to measure pantograph voltage, measurement of resistance pantograph electric current, and the variation of voltage current waveform detects off-line state when the bow net off-line by detecting.
(4) pressure detection method
This method is by setting pressure sensor on pantograph, the bow net contact pressure is detected, thereby judge whether to take place off-line.
In electrified railway, pantograph and contact system can influence the pantograph-catenary current collection quality, and can produce over voltage because all factor generation bow net arcing phenomenons all cause bigger infringement to pantograph, contact wire, influence the running quality of electrified railway.The detection of present stage to bow net arcing phenomenon also do not have concrete equipment to come out, and mainly is because the existence of many uncertain factors such as the randomness that the bow net arcing takes place, instantaneity.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of contactless bow net arcing checking system that possesses degree of precision and reliability.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of contactless bow net arcing checking system, comprise the optical imagery measurement mechanism, ultraviolet light photo sensing device and data analysis disposal system, the optical imagery measurement mechanism is gathered the optical signal of bow net arcing, the ultraviolet light photo sensing device is converted into pulsed current signal with optical signal, the data analysis disposal system resolves to the time that arcing continues with pulsed current signal, the number of times that intensity and each span arcing take place, in conjunction with the information in the existing data bank, the zone that arcing takes place is accurately located simultaneously.
Further, described optical imagery measurement mechanism is the optical signal of arcing can be amplified tens of times ultraviolet ray to gather set of lenses, and this ultraviolet ray is gathered set of lenses and is installed in outside the train roof.
Further, described ultraviolet light photo sensing device mainly is made up of Ultraviolet sensor and driving circuit, and Ultraviolet sensor is installed in the train car.
Further, described optical imagery measurement mechanism is connected by UV optical fiber with the ultraviolet light photo sensing device.
Further, described data analysis disposal system is mainly by forming based on the Acquisition Circuit of FPGA with based on the embedded system of DSP.
Compared with prior art, the invention has the beneficial effects as follows: first ultraviolet light photo is detected principle and be applied on the bow net arcing detection technique, the specific wavelength that the bow net arcing is sent is as its detected characteristics.Detect by the ultraviolet light that sends when the bow net arcing takes place, thereby judge whether the generation of bow net arcing, and calculate concrete parameter such as arc time and intensity according to corresponding algorithm, and the arcing place is positioned the convenient maintenance and the transformation of circuit later on by existing data bank.Use UV Optical Fiber Transmission ultraviolet signal, thereby Ultraviolet sensor can be seated in the car body, significantly reduced sensor and be installed in the influence that roof is subjected to forceful electric power pressure, high-intensity magnetic field, noise and other climatic conditions, have higher detection precision and reliability.In addition, the Back end data of equipment is handled and is adopted embedded system, has replaced traditional industrial computer system, and it is more portable and reliable that equipment is used, and has stronger portability and equipment dependability, and function expansion and maintenance are also convenient.Adopt ultraviolet ray to gather set of lenses and gather faint ultraviolet light, can at utmost collect the ultraviolet photon that arcing is launched.In conjunction with existing database-located information, the arcing scene accurately can be located.
Description of drawings
Fig. 1 is the functional-block diagram of the contactless bow net arcing of the present invention checking system.
Among the figure: 1-optical imagery measurement mechanism, 2-data analysis disposal system, 3-Ultraviolet sensor, 4-UV optical fiber, 5-Acquisition Circuit, 6-embedded system.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Embodiment:
As shown in Figure 1, a kind of contactless bow net arcing checking system, comprise optical imagery measurement mechanism 1, ultraviolet light photo sensing device and data analysis disposal system 2, optical imagery measurement mechanism 1 is gathered the optical signal of bow net arcing, the ultraviolet light photo sensing device is converted into pulsed current signal with optical signal, data analysis disposal system 2 resolves to the number of times that lasting time of arcing, intensity and each span arcing take place with pulsed current signal, in conjunction with the information in the existing data bank, the zone that arcing takes place is accurately located simultaneously.Described optical imagery measurement mechanism 1 is the optical signal of arcing can be amplified tens of times ultraviolet ray to gather set of lenses, and this ultraviolet ray is gathered set of lenses and is installed in outside the train roof.Described ultraviolet light photo sensing device mainly is made up of Ultraviolet sensor 3 and driving circuit, and Ultraviolet sensor 3 is installed in the train car.Described optical imagery measurement mechanism 1 is connected by UV optical fiber 4 with the ultraviolet light photo sensing device.Described data analysis disposal system 2 is main by forming based on the Acquisition Circuit 5 of FPGA with based on the embedded system 6 of DSP.
The groundwork process of the foregoing description is as follows:
In order to detect the bow net arcing, the most important thing is to extract the feature of bow net arcing.The feature of bow net arcing mainly comprises light feature, hot feature and electromagnetic signature.Wherein, the light feature is the most obvious.
According to the high potential theory, find easily: two conductors with different potentials are at a distance of closer the time, and then a. g. is breakdown greater than certain value when electric field strength, produces arcing between the conductor, the simultaneous arc light.
Found through experiments, the arc light that bow net produces comprises the ultraviolet light of some specific wavelengths, and (crest is 280nm, half band-width is 5nm), we are the feature of this specific ultraviolet light wave band as the bow net arcing, exist and detect the bow net arcing by surveying this feature.
In Fig. 1, by optical imagery measurement mechanism 1 design-calculated light path, catch the ultraviolet photon that arcing gives off, utilize UV optical fiber 4 that optical signal is sent to Ultraviolet sensor 3 and driving circuit in the car, the so just problem that can effectively avoid the detector in the Ultraviolet sensor 3 influenced by electromagnetism and calorific effect from roof then.Detector in the ultraviolet light photo sensing device is converted to pulsed current signal with ultraviolet photon, deliver to data analysis disposal system 2 by driving circuit, carry out analyzing and processing by embedded system 6 paired pulses current signals again, thereby judge arcing intensity, at last in conjunction with existing database circuitry information, location arcing scene reaches upper computer with result simultaneously, shows, work such as storage and printing reports.
Claims (5)
1. contactless bow net arcing checking system, it is characterized in that: comprise optical imagery measurement mechanism (1), ultraviolet light photo sensing device and data analysis disposal system (2), optical imagery measurement mechanism (1) is gathered the optical signal of bow net arcing, the ultraviolet light photo sensing device is converted into pulsed current signal with optical signal, data analysis disposal system (2) resolves to the number of times that lasting time of arcing, intensity and each span arcing take place with pulsed current signal, in conjunction with the information in the existing data bank, the zone that arcing takes place is accurately located simultaneously.
2. contactless bow net arcing checking system according to claim 1, it is characterized in that: described optical imagery measurement mechanism (1) is for amplifying the optical signal of arcing tens of times ultraviolet ray collection set of lenses, and this ultraviolet ray collection set of lenses is installed in outside the train roof.
3. contactless bow net arcing checking system according to claim 1, it is characterized in that: described ultraviolet light photo sensing device mainly is made up of Ultraviolet sensor (3) and driving circuit, and Ultraviolet sensor (3) is installed in the train car.
4. according to claim 1,2 or 3 described contactless bow net arcing checking systems, it is characterized in that: described optical imagery measurement mechanism (1) is connected by UV optical fiber (4) with the ultraviolet light photo sensing device.
5. contactless bow net arcing checking system according to claim 1 is characterized in that: described data analysis disposal system (2) is main by forming based on the Acquisition Circuit (5) of FPGA with based on the embedded system (6) of DSP.
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| CN2011101353346A CN102295015A (en) | 2011-05-24 | 2011-05-24 | Non-contact bow net arcing detection system |
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| CN2011101353346A CN102295015A (en) | 2011-05-24 | 2011-05-24 | Non-contact bow net arcing detection system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616156A (en) * | 2012-04-10 | 2012-08-01 | 华东交通大学 | Device and method for detecting and elevating contact network state based on electrical capacity analysis |
| CN104176088A (en) * | 2014-09-11 | 2014-12-03 | 西南交通大学 | Non-contact type pantograph and catenary arcing energy detection method and system |
| CN104442840A (en) * | 2014-12-01 | 2015-03-25 | 西南交通大学 | Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device |
| CN105403242A (en) * | 2015-05-22 | 2016-03-16 | 华东交通大学 | Locomotive pantograph-catenary hard point photoelectric vibration comprehensive detection and GPS positioning method and system |
| CN107807310A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院深圳先进技术研究院 | Non-contact bow net arcing detection system |
| CN108594032A (en) * | 2018-01-05 | 2018-09-28 | 珠海泰坦科技股份有限公司 | A kind of contactless contact net on-line checking alarm real-time transmission system and method |
| CN109436030A (en) * | 2018-06-20 | 2019-03-08 | 苏州大成电子科技有限公司 | A kind of ultraviolet arcing detection system of novel train |
| CN109917224A (en) * | 2019-03-11 | 2019-06-21 | 西南交通大学 | Non-contact bow net arcing energy testing apparatus and method based on spectroscopic diagnostics |
| CN110470958A (en) * | 2019-08-23 | 2019-11-19 | 西南交通大学 | A kind of bow net arc stiffness detection system and method based on electric arc arc acoustical signal |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616156A (en) * | 2012-04-10 | 2012-08-01 | 华东交通大学 | Device and method for detecting and elevating contact network state based on electrical capacity analysis |
| CN102616156B (en) * | 2012-04-10 | 2014-03-05 | 华东交通大学 | Device and method for detecting and elevating contact network state based on electrical capacity analysis |
| CN104176088A (en) * | 2014-09-11 | 2014-12-03 | 西南交通大学 | Non-contact type pantograph and catenary arcing energy detection method and system |
| CN104442840A (en) * | 2014-12-01 | 2015-03-25 | 西南交通大学 | Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device |
| CN105403242A (en) * | 2015-05-22 | 2016-03-16 | 华东交通大学 | Locomotive pantograph-catenary hard point photoelectric vibration comprehensive detection and GPS positioning method and system |
| CN105403242B (en) * | 2015-05-22 | 2019-06-18 | 华东交通大学 | A kind of locomotive pantograph net hard spot photoelectric vibration comprehensive detection and GPS positioning method and system |
| CN107807310A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院深圳先进技术研究院 | Non-contact bow net arcing detection system |
| CN107807310B (en) * | 2016-09-09 | 2024-02-13 | 中国科学院深圳先进技术研究院 | Non-contact type bow net arcing detection system |
| CN108594032A (en) * | 2018-01-05 | 2018-09-28 | 珠海泰坦科技股份有限公司 | A kind of contactless contact net on-line checking alarm real-time transmission system and method |
| CN109436030A (en) * | 2018-06-20 | 2019-03-08 | 苏州大成电子科技有限公司 | A kind of ultraviolet arcing detection system of novel train |
| CN109917224A (en) * | 2019-03-11 | 2019-06-21 | 西南交通大学 | Non-contact bow net arcing energy testing apparatus and method based on spectroscopic diagnostics |
| CN110470958A (en) * | 2019-08-23 | 2019-11-19 | 西南交通大学 | A kind of bow net arc stiffness detection system and method based on electric arc arc acoustical signal |
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Application publication date: 20111228 |