CN1045931C - Coding track circuit with audio signal data of locomotives - Google Patents
Coding track circuit with audio signal data of locomotives Download PDFInfo
- Publication number
- CN1045931C CN1045931C CN 94105033 CN94105033A CN1045931C CN 1045931 C CN1045931 C CN 1045931C CN 94105033 CN94105033 CN 94105033 CN 94105033 A CN94105033 A CN 94105033A CN 1045931 C CN1045931 C CN 1045931C
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- CN
- China
- Prior art keywords
- track circuit
- xegregating unit
- track
- signal data
- audio signal
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- 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.)
- Expired - Fee Related
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Abstract
The present invention provides an AC continuous signal information code track circuit of track circuit stacked audio locomotives, which relates to special equipment for railway signals. The present invention realizes audio cab signal information stacked on the AC continuous track circuit through the isolation effects of failure guide safety isolation devices (6), (11), and reaches the goal that when elements of the isolation devices (6), (11) have failure, sent audio cab signal information can not operate a track relay (12) in error.
Description
Continuous exchange of track circuit stack audio signal data coded track circuit of the present invention is a kind of specialized equipment of railway signal, use utilizes xegregating unit to be implemented in the audio signal data that superposes on the continuous exchange of track circuit in the station of the automatic block district of supervision of locomotive tape speed or speed control.
" track circuit " generally is meant the rail that utilizes railway line as conductor, to check the private circuit that has or not car team to take on the circuit; Continuous exchange of track circuit is that reception facilities adopts the rectifier type track relay by the industrial frequency AC power supply; This track circuit standard is the main standard of the non-electrified section station track circuit of China railways.When the audio-frequency information of stack when reaching certain value, also can move the rectifier type track relay.So, in the time of on continuous exchange of track circuit, superposeing audio signal data, must take quarantine measures, prevent audio-frequency information misoperation rectifier type track relay, jeopardize traffic safety.
The title of being published by China Railway Press has been for disclosing the continuous exchange of track circuit that a kind of former Soviet Union adopts in the station in " analysis and synthesis of track circuit " book, its enforcement be the electrochemical sign indicating numberization of non-stacked system.
At home, at present the continuous exchange of track circuit coding of adopting all is " switching " modes of non-stack, as 1993 the 1st phases of " railway communication signal " magazine, inscribes one's name and is a disclosed technology in " coding of station track, station " literary composition.There is the defective of moment short in size in this mode, can not satisfy the needs of train speed supervision or speed control system.
Purpose of the present invention, in the station of adopting continuous exchange of track circuit, need not change the track circuit standard, utilize special-purpose xegregating unit to be implemented in the audio signal data that superposes on the continuous exchange of track circuit, train speed is supervised or the needs of speed control system to satisfy, and guarantees not misoperation track relay of audio signal data.
The present invention adopts following technical measures:
Utilize special-purpose fault-safety principle type track circuit feed end and track circuit receiving end xegregating unit, realize the electrical isolation of audio signal data and track relay.
Between track circuit power supply and track feed end equipment, be connected to the feed end xegregating unit, between circuit receiving end equipment and track relay, be connected to the receiving end xegregating unit, the buffer circuit that send, receiving end locomotive signal information transmitting apparatus is high resistance to track circuit information through audio-frequency information is low resistance is connected across respectively on feed end xegregating unit or the receiving end xegregating unit; Give, the receiving end xegregating unit also is respectively equipped with audio-frequency information is high resistance and track circuit information is low-impedance buffer circuit.
The present invention has following major advantage:
1. when the element et out of order of xegregating unit, can therefore not cause the dangerous consequences of audio signal data misoperation track relay, reach the purpose of fault-safety principle;
2. be convenient to design, construction and maintenance;
3. save investment.
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 track circuit equipment is arranged scheme drawing
Fig. 2 track circuit feed end isolator schematic diagram
Fig. 3 track circuit receiving end isolator schematic diagram
Fig. 1 is that track circuit equipment arranges scheme drawing, isolated rail joint 1 with rail 2 be divided into several track circuit sections (hereinafter to be referred as: section).The track circuit feed end is made up of power supply 9, track circuit feed end isolator 6 and outdoor cable 5, the track circuit feed end equipment 4 of indoor track circuit, and the iron and steel connection lead 3 by track circuit is connected to rail 2, sends track circuit informations to rail 2; The track circuit receiving end is made up of indoor track relay 12, track circuit receiving end isolator 11 and outdoor cable 5, track circuit receiving end equipment 10, rail connection lead 3 by track circuit is connected to rail 2, receives track circuit information from rail 2.Locomotive signal information is superimposed upon on the track circuit by sending controlled condition 7, track circuit feed end isolator 6 or track circuit receiving end isolator 11 by audio frequency transmitting apparatus 8, delivers to rail 2 by the rail connection lead 3 of outdoor cable 5, track circuit feed end equipment 4 or track circuit receiving end equipment 10 and track circuit.
One, track circuit feed end isolator 6:
Fig. 2 is a track circuit feed end isolator schematic diagram.This isolator 6 uses at the continuous exchange of track circuit feed end, is located in the Machine Room of signal tower.
Track circuit feed end isolator 6 is made of an inductance coil 14, resonant capacitance 15, metal paper dielectric capacitance 13 and one " isolate---coupling " supply transformer 16.Its principle of work: utilize inductance coil 14 and resonant capacitance 15 to constitute audio-frequency information is high resistance, and be the tank circuit of series resonance, promptly be low resistance to track circuit information; Utilize 13 pairs of audio-frequency informations of electric capacity to be low resistance, and track circuit information is high resistance, reduce influencing each other between audio frequency transmitting apparatus 8 and track circuit equipment; " isolate---coupling " supply transformer 16 is reduced to 120V with power supply voltage by 220V, and is isolated from each other with each track circuit feed end and reaches the purpose of audio frequency impedance match.
Two, track circuit receiving end isolator 11:
Fig. 3 is a track circuit receiving end isolator schematic diagram.This isolator 11 uses at the track circuit receiving end, is located in the Machine Room of signal tower.
Track circuit receiving end isolator 11 is made of two inductance coils 18, two resonant capacitances 19, a metal paper dielectric capacitance 17 and a four-head electric capacity 20.Its principle of work: utilize inductance coil 18 and resonant capacitance 19 to constitute audio-frequency information is high resistance, and be the series resonance tank circuit, promptly be low resistance to track circuit information; Two branch roads constitute bleeder circuit to audio-frequency information with four-head electric capacity 20 again; Utilize 17 pairs of audio-frequency informations of electric capacity to be low resistance, and track circuit information is high resistance, reduce influencing each other between audio frequency transmitting apparatus 8 and track circuit equipment, simultaneously, guarantee when the loaded impedance of audio frequency transmitting apparatus 8 changes, be carried in the withstand voltage that resultant voltage value on the cable 5 is not more than cable 5.
Claims (3)
1. a continuous exchange of track circuit stack audio signal data coded track circuit is a kind of specialized equipment of railway signal, use is in the station of the automatic block district of supervision of locomotive tape speed or speed control, utilize special-purpose xegregating unit, be implemented in the audio signal data that superposes on the continuous exchange of track circuit, and the track relay (12) that guarantees continuous exchange of track circuit misoperation not, it is characterized in that: special-purpose xegregating unit adopts fault-safety principle type track circuit feed end xegregating unit (6) and receiving end xegregating unit (11), realizes the electrical isolation of audio signal data and track relay;
Between track circuit power supply (9) and track circuit feed end equipment (4), be connected to feed end xegregating unit (6), between track circuit receiving end equipment (10) and track relay (12), be connected to receiving end xegregating unit (11); The buffer circuit that send, receiving end locomotive signal information transmitting apparatus is high resistance to track circuit information through audio-frequency information is low resistance is connected across respectively on feed end xegregating unit (6), the receiving end xegregating unit (11); Feed end xegregating unit (6), receiving end xegregating unit (11) also are respectively equipped with audio-frequency information are high resistance and track circuit information is low-impedance buffer circuit.
2. continuous exchange of track circuit stack audio signal data coded track circuit according to claim 1, it is characterized in that: the structure of described track circuit feed end xegregating unit (6) is, be provided with the series arm that inductance coil (14) and resonant capacitance (15) constitute in the major loop, also be connected to the second siding ring of " isolation-coupling " supply transformer (16), the integrate with power supply (9) of circuit of the first siding ring of voltage transformer (16), the audio signal data sending end is connected across on this major loop by electric capacity (13).
3. continuous exchange of track circuit stack audio signal data coded track circuit according to claim 1, it is characterized in that: the structure of described track circuit receiving end xegregating unit (11) is, on major loop, be provided with two series arms that constitute by inductance coil (18) and resonant capacitance (19), in the middle of these two series arms, be connected to four-head electric capacity (20), electric capacity (20) connects track relay (12) again, and the audio signal data sending end is connected across on this major loop by electric capacity (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105033 CN1045931C (en) | 1994-05-12 | 1994-05-12 | Coding track circuit with audio signal data of locomotives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105033 CN1045931C (en) | 1994-05-12 | 1994-05-12 | Coding track circuit with audio signal data of locomotives |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095996A CN1095996A (en) | 1994-12-07 |
| CN1045931C true CN1045931C (en) | 1999-10-27 |
Family
ID=5031845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105033 Expired - Fee Related CN1045931C (en) | 1994-05-12 | 1994-05-12 | Coding track circuit with audio signal data of locomotives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045931C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108974047B (en) * | 2018-08-23 | 2023-08-08 | 深圳科安达电子科技股份有限公司 | Novel axle counting system |
| CN108974046B (en) * | 2018-08-23 | 2023-06-30 | 深圳科安达电子科技股份有限公司 | Axle counting track circuit system |
| CN109159798B (en) * | 2018-08-23 | 2023-06-30 | 深圳科安达电子科技股份有限公司 | Method for transmitting axle counting signal by using track circuit signal cable |
-
1994
- 1994-05-12 CN CN 94105033 patent/CN1045931C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1095996A (en) | 1994-12-07 |
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