CN202413853U - Metro rail circuit detecting device - Google Patents
Metro rail circuit detecting device Download PDFInfo
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- CN202413853U CN202413853U CN2011205490831U CN201120549083U CN202413853U CN 202413853 U CN202413853 U CN 202413853U CN 2011205490831 U CN2011205490831 U CN 2011205490831U CN 201120549083 U CN201120549083 U CN 201120549083U CN 202413853 U CN202413853 U CN 202413853U
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- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 9
- 239000003990 capacitor Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract 2
- 230000003203 everyday effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to a metro rail circuit detecting device. A metro rail circuit comprises a coupling unit. The metro rail circuit detecting device is characterized in that the detecting device comprises a signal simulation module for simulating signal transmission of a metro station and a signal analysis module for simulating signal receiving of a train; and the signal simulation module is connected with the coupling unit of the metro rail circuit; and the signal analysis module is connected with the metro rail circuit through wireless network. Compared with the prior art, a metro rail system can be maintained and detected everyday by using signal detecting equipment specially designed for the metro rail circuit system to help maintainers to regulate parameter setting of a compensation capacitor in real time, so that the normal work of the signal system is guaranteed, the manpower, the material resources and the time are saved by adopting the maintenance means, and the maintenance and repairing costs of the metro rail circuit system can be reduced.
Description
Technical field
The utility model relates to a kind of underground railway track circuit checker, especially relates to a kind of device that the underground railway track circuit is detected through fsk signal.
Background technology
Whether the underground railway track circuit is to be the circuit that conductor constitutes with one section rail, be used for continuous detecting subway section circuit and taken by rolling stock, also is used for control signal device or switching device, to guarantee traffic safety.The underground railway track Circuits System is a subway communication signal dedicated system.The transmission of vehicle position information is through the S-Bond loop wire in the system, coordinates loop wire, and coupling unit and rail realize that track circuit is laid along track circuit, and it is the important component part in ATC (the Automatic Train Control) system.Present track circuit can be realized: whether (1) cross-check sum supervision station track takies, and prevents that the ground of mistake from handling route; (2) can have or not rolling stock to pass through by cross-check sum supervision section with a switch or switches, locking takies the track switch of section with a switch or switches, prevents when rolling stock process track switch, to pull track switch; (3) whether the rail on the cross-check sum supervision track is intact, and when the brittle fractures of rail of a certain track circuit section, the signal that protects this section station track also just can not be opened etc.; (4) the different information of transmission makes signal according to the variation of institute's protected section and the occupied situation of the place ahead adjacent segments and conversion shows.
At present, in Shanghai Underground various types of signal system, track circuit failure accounts for 36%, and switch breakdown accounts for 16%, and signal trouble accounts for 13%, and power fail accounts for 15%.The track circuit failure rate is the highest, influence driving efficient and quality.In addition,, receive environmental change easily as the characteristics of telecommunication media itself, complicated factor influences such as railway roadbed change and traction current interference, difficult in maintenance.Add, existing detection technique means are low, and shortage is safeguarded and can't be obtained direct result by special inspecting equipment.Even call train detection, can only qualitative detection, can not quantitative analysis.Along with Shanghai Underground operation mileage and volume of passenger traffic heighten, also embody day by day in the deficiency of context of detection, owing to signal system relates to the safe in operation problem of train, so the correct transmission of signal is very important.
In digital track circuit system; The influence that the inductance of fsk signal transmit receive unit, capacitance are changed by ambient temperature and electromagnetic environment can be drifted about; And then have influence on the LC resonance circuit that FSK communicates by letter, and make central frequency squint, cause communication quality to descend; Influence data transmission, thereby cause the train operation problem.Because the antenna received signal quality is not only relevant with the LC oscillation frequency on the train; Also with rail; Many factors such as train status are relevant; Therefore, the capacitance compensation value can not simply be adjusted through calculating, but will decide parameter how to adjust building-out capacitor according to the aerial signal that train received.At present, there is not this type of isolated plant both at home and abroad.Metro operation company does not have special-purpose detecting instrument and actv. maintenance service, makes the maintenance of track circuit very difficult.
The utility model content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned prior art existence a kind of device that the underground railway track circuit is detected through fsk signal to be provided.
The purpose of the utility model can realize through following technical scheme:
A kind of underground railway track circuit checker; Described underground railway track circuit comprises coupling unit; It is characterized in that; Described detecting device comprises the signal imitation module and the signal analyse block that is used to simulate the train signal reception that is used to simulate the signaling at stations transmission, and described signal imitation module is connected with the coupling unit of underground railway track circuit, and described signal analyse block connects the underground railway track circuit through wireless network.
Described signal imitation module comprises first signal processing unit, first memory cell, first display unit, FSK modulating unit and amplifying unit; Described first memory cell all is connected with first signal processing unit with first display unit, and the coupling unit of described first signal processing unit, FSK modulating unit, amplifying unit and underground railway track circuit connects successively.
Described signal analyse block comprises Car antnna, filter unit, FSK demodulating unit, secondary signal processing unit, second memory cell and second display unit; Described Car antnna connects the underground railway track circuit through wireless network; Car antnna, filter unit, FSK demodulating unit and secondary signal processing unit are connected successively, and described second memory cell all is connected with the secondary signal processing unit with second display unit.
Compared with prior art; The utility model is to underground railway track Circuits System design-calculated signal special inspecting equipment; Can carry out daily maintenance to the underground railway track system and detect, help the parameter setting of service personnel adjustment building-out capacitor in real time, guarantee the normal operation of signal system; And maintenance service is saved human and material resources and time, the cost that has reduced the maintenance of underground railway track Circuits System and keeped in repair.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the hardware configuration scheme drawing of the utility model embodiment;
Fig. 3 is the transport stream signal journey figure of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of underground railway track circuit checker comprises being used to simulate signaling at stations signal imitation module 1 of sending and the signal analyse block 2 that is used to simulate the train signal reception.
Signal imitation module 1 comprises first signal processing unit 11, first display unit 12, first memory cell 13, FSK modulating unit 14 and amplifying unit 15.Wherein, first display unit 12 all is connected with first signal processing unit 11 with first memory cell 13, is respectively applied for storage and shows the signal information that storage first signal processing unit 11 generates.First signal processing unit 11, FSK modulating unit 14 are connected with amplifying unit 15 successively, and signal is handled through FSK modulating unit 14 and amplifying unit 15 after being produced by first signal processing unit 11 again.Amplifying unit 15 directly is connected with the coupling unit 3 of underground railway track circuit, and the fsk signal that processing is obtained transfers in the underground railway track circuit.
Signal analyse block 2 comprises secondary signal processing unit 21, second display unit 22, second memory cell 23, FSK demodulating unit 24, filter unit 25 and Car antnna 26.Wherein, second display unit 22 and second memory cell 23 are connected with secondary signal processing unit 21 respectively, are used to store the information with shows signal.Car antnna 26, filter unit 25, FSK demodulating unit 24 and secondary signal processing unit 21 are connected successively; After fsk signal in the underground railway track circuit is received by Car antnna 26; Filtering and demodulation process through filter unit 25, FSK demodulating unit 24; Further handle by 21 pairs of signal informations of secondary signal processing unit again, thus the performance of analysis underground railway track circuit.
The concrete treatment scheme of signal is as shown in Figure 3 during detection.At first; First signal processing unit in the signal imitation module carries out pretreatment to train data information; In train data information, add start bit, check bit sum stop bit, and the encapsulation framing, to simulate the signal that send the subway station; Carry out the amplification of FSK modulation and signal then, be sent to subsequently in the coupling unit of underground railway track circuit.At this moment, signal analyse block receives the fsk signal in the underground railway track circuit through Car antnna, gather this signal after; Through filtering and FSK demodulation process; Further handle by the secondary signal processing unit then, specifically be treated to: the start bit of search signal and stop bit, confirm signal length; Through check bit signal is carried out verification again, obtain the bit error ratio, amplitude and the frequency of signal.The signal waveform that Car antnna receives, the demodulating information of FSK demodulating unit and signal processing module are handled the information that obtains and all can be shown through second display module, and are stored in second memory cell.
Above-mentioned detecting device can be realized through hardware as shown in Figure 2 in actual use; Signal imitation module and signal analyse block have included telltale, PXI-8106 controller, PXI-6251 data collecting card and SCB-68 connection box, and signal analyse block has also comprised the Car antnna that is used to receive signal in addition.The PXI-8106 controller can be realized the function of signal processing unit, memory cell, filter unit, amplifying unit, FSK modulating unit and FSK demodulating unit; The PXI-6251 data collecting card is used for the timing acquiring signal; The SCB-68 connection box then plays the effect of circuit bonded assembly; The SCB-68 connection box of signal imitation module directly with the underground railway track circuit in be provided with coupling unit coupling plate be connected, to underground railway track circuit transmission fsk signal.The all hardware of signal analyse block all is arranged in the go-cart of a track-movable, the signal of each position of traverse measurement through go-cart.
After hardware connected, service personnel can begin the underground railway track circuit is safeguarded, at first observes the waveform situation that shows on the telltale of signal analyse block in the go-cart; If waveform is more complete sinusoidal waveform, there is not distortion basically, prove reception good; If waveform chaotic or distortion are more serious, to check then that hardware connects whether to go wrong, check simultaneously whether the waveform that Car antnna receives is normal; After guaranteeing that hardware connects, begin analysis to the central frequency and the bit error ratio.In the central frequency that equipment showed on observing go-cart; To regulate the building-out capacitor on the coupling plate; Note observing the bit error ratio simultaneously, the building-out capacitor value when finding the bit error ratio minimum, the building-out capacitor value of this moment are and receive the signal optimum value; With the value record of building-out capacitor and after adjusting, promptly accomplish once normal the maintenance and the adjustment of building-out capacitor.
Claims (3)
1. underground railway track circuit checker; Described underground railway track circuit comprises coupling unit; It is characterized in that; Described detecting device comprises the signal imitation module and the signal analyse block that is used to simulate the train signal reception that is used to simulate the signaling at stations transmission, and described signal imitation module is connected with the coupling unit of underground railway track circuit, and described signal analyse block connects the underground railway track circuit through wireless network.
2. a kind of underground railway track circuit checker according to claim 1; It is characterized in that; Described signal imitation module comprises first signal processing unit, first memory cell, first display unit, FSK modulating unit and amplifying unit; Described first memory cell all is connected with first signal processing unit with first display unit, and the coupling unit of described first signal processing unit, FSK modulating unit, amplifying unit and underground railway track circuit connects successively.
3. a kind of underground railway track circuit checker according to claim 1; It is characterized in that; Described signal analyse block comprises Car antnna, filter unit, FSK demodulating unit, secondary signal processing unit, second memory cell and second display unit; Described Car antnna connects the underground railway track circuit through wireless network; Car antnna, filter unit, FSK demodulating unit and secondary signal processing unit are connected successively, and described second memory cell all is connected with the secondary signal processing unit with second display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205490831U CN202413853U (en) | 2011-12-23 | 2011-12-23 | Metro rail circuit detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205490831U CN202413853U (en) | 2011-12-23 | 2011-12-23 | Metro rail circuit detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN202413853U true CN202413853U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205490831U Expired - Fee Related CN202413853U (en) | 2011-12-23 | 2011-12-23 | Metro rail circuit detecting device |
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| CN (1) | CN202413853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171590A (en) * | 2011-12-23 | 2013-06-26 | 上海工程技术大学 | Detecting device for metro track circuit |
| CN104237830A (en) * | 2014-10-08 | 2014-12-24 | 洪明 | Circuit detection and verification signal simulating device with control interfaces |
-
2011
- 2011-12-23 CN CN2011205490831U patent/CN202413853U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171590A (en) * | 2011-12-23 | 2013-06-26 | 上海工程技术大学 | Detecting device for metro track circuit |
| CN104237830A (en) * | 2014-10-08 | 2014-12-24 | 洪明 | Circuit detection and verification signal simulating device with control interfaces |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20161223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |