CN1072144A - Rail induction uninsulated automatic block - Google Patents
Rail induction uninsulated automatic block Download PDFInfo
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- CN1072144A CN1072144A CN 92111311 CN92111311A CN1072144A CN 1072144 A CN1072144 A CN 1072144A CN 92111311 CN92111311 CN 92111311 CN 92111311 A CN92111311 A CN 92111311A CN 1072144 A CN1072144 A CN 1072144A
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- rail
- circuit
- uninsulated
- track
- receptor
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Abstract
A kind of railway signal uninsulated automatic block equipment.Be to utilize rail, send shift frequency information (FSK) continuously by the low-frequency square-wave signal modulation as information transfer channel.The rail induction uninsulated automatic block device that constitutes by major parts such as central transmitter, rail sensor, filter and receptors.Can send 8 to 10 locomotive signal informations.Its transmitter and receptor can be established single cover or duplex system.This automatic block equipment has: both do not had dead section, do not had fuzzy section again, the track circuit boundary is clearly demarcated, can establish the characteristics by signal in the interval.This device can be concentrated and be arranged on the station, also can disperse to be arranged at the interval.
Description
The invention belongs to a kind of uninsulated automatic block equipment in the railway signal technology field.
Uninsulated automatic block is divided into dual mode both at home and abroad at present:
1, electrical isolation formula claims resonant mode again.Be boundary employing inductance, electric capacity and rail part inductance formation resonant tank, realize electrical isolation with different frequency and adjacent track circuit, as the UM-71 system of France, the FS-2500 system of Britain etc. at track circuit.This kind mode, the isolation of electrical insulation section is better, and the adjacent track circuit boundary is clearly demarcated, and can install automatically closes up passes through signal.Its major defect is that the electric insulating joint has length to be not more than the section of 20m, does not have inspection along separate routes at this section inner orbit circuit, thereby can't realize continuously checking the train occupation state, and this section is called dead section.
2, natural attenuation, centre feed formula.Be the characteristics of energy nature attenuation when transmitting in rail according to track circuit information, the mode that adopts the centre feed two ends to receive is as the Soviet Union
The A6 system.AND circuit control in that this kind mode middle orbit relay is made up of the two ends reception facilities realizes electrical isolation with different frequency and adjacent track circuit.The incoming signal of reception facilities adopts the voltage input type, therefore adjacent two sections track circuit boundaries are indeterminate, according to the difference of track circuit frequency, the fuzzy section of long 125m arranged approximately, cause the interval to be provided with by signal, but there is not dead section in this kind track circuit.
Purpose of the present invention, be to adopt the nature attenuation, centre feed, track induction and receiving end mode arranged in a crossed manner, by rail as information transfer channel, produce a kind of not only do not had dead section, but also do not have fuzzy section, the track circuit boundary is clearly demarcated, in the interval uninsulated automatic block standard of passing through signal that can be provided with.
Transmitter of the present invention is produced two kinds of shift frequency information of track circuit and cab signal use by central transmitter, be subjected to piezoelectric transformer and rail sensor to constitute the track circuit receiving end by track circuit, the incoming signal of track circuit reception facilities adopts voltage, current system, is input to reception facilities again after promptly utilizing the signal voltage of track relay transformer and rail sensor superimposed.
The adjacent two sections track circuits of the present invention adopt frequency isolation and mutual arranged crosswise mode, the juxtaposition section remains in the length-specific, and is clearly demarcated to reach the adjacent track circuit boundary, both do not had dead section, do not have fuzzy section again, be convenient between the setting area ground and pass through signal.
Transmission of the present invention, reception facilities can adopt single cover or duplex system work system.Major equipment can adopt CMOS integrated circuit or discrete component to constitute.Equipment can be concentrated and be arranged in the station, also can disperse to be arranged in the railway interval case along the line.
Can receive following effect behind enforcement the present invention: increase quantity of information, satisfy the requirements of automatically closing up that show more with cab signal; Realize jointless track circuit, remove the cutting rail from, save construction investment, reduce maintenance activity that the adjacent track circuit boundary is clear and definite, is convenient to be provided with ground and passes through signal; Track circuit does not have dead section, can check the train occupation state uninterruptedly; Can not install impedance transformer at electrified section, reduce the traction current harmonic interference; Realization frequency-shift cab signal compatibility, the needs of adaptation equipment rehabilitation; Whole aircraft reliability is improved.
Major equipment circuit of the present invention is seen the following drawings:
Accompanying drawing 1 rail induction uninsulated automatic block track circuit equipment wiring schematic diagram;
Accompanying drawing 2 central transmitter circuit figure;
Accompanying drawing 3 matching transformers, attenuator, isolating transformer, filter circuit figure;
Accompanying drawing 4 acceptor circuit figure.
In the accompanying drawing 1 adjacent two by signal (1,2) and relative three track circuit sections (3,4,5), the s-f of track circuit is respectively with f
1, f
2, f
3Expression, the central feed end of track circuit section (4) is located in the track transformer box (200), is provided with track transformer (15), lightning protection component (14) in the case, is connected by the interior transmitting apparatus (201) in cable and station; The receiving end branch of section (4) is located at the two ends (I end and II end) of this track circuit section, the I end links by rail sensor (6,7) and receiving end transformer box (202), be provided with track transformer (17) in the case, resonant capacitance (19) and lightning protection component (16), the secondary side of track transformer (17) links to each other with cab signal transmitting apparatus (229) in the station by cond (18).Sensor (6) and (7) polyphone back and cond (19) resonance are in s-f f
2, contact with another group coil of track transformer (17) again, be connected by the interior reception facilities (203) in cable and station.Another receiving end (II) of section (4) links by rail sensor (8,9) and receiving end transformer box (204), and box equipment is identical with the I end.Sensor (8), (9) polyphone back and cond (22) resonance are in s-f f
1, after contacting with the second siding ring of track transformer (21) again, be connected by the interior reception facilities (205) in cable and station.Reception facilities (203,205) comprises matching transformer (228), attenuator (82), filter (83～106), isolating transformer (108,109), constant voltage power suspply (225) and corresponding receptor (223,224) respectively in standing.
The receiving-end transformer case (206) of accompanying drawing 1 middle orbit circuit section (3), the receiving-end transformer case (208) of track circuit section (5), its box equipment are identical with transformer box (204), (202) respectively.The I of section (4), II end respectively with section (3) and (5) juxtaposition, overlap section length is 150m.
Each low-frequency information of quartz oscillator in the accompanying drawing 2 (210～219) all adopts crystal (24), binary string linage-counter (28) and resistance, capacity cell (23), (25), (26), (27) to constitute vibration and frequency dividing circuit.Oscillator (210,211) produces track circuit low-frequency information (8.1HZ and 11HZ), oscillator (212～219) produces cab signal low-frequency information (8.1,9.4,11,12.1,15,17.4,20,26HZ totally eight kinds), electronic component (29～35) is formed DC regulated power supply, for low frequency oscillator is supplied with the 7V direct supply.Deviated oscillator (221,222) produces track shift frequency information (300,400,500HZ) and cab signal shift frequency information (750,850HZ) respectively, deviated oscillator produces fsk signal by low frequency oscillator by control relay circuit (220) modulation.Carry out power gain and be sent to track circuit central authorities feed end through quiescent push-pull amplifier (75～81) again after the mixing of penultimate amplifier (65～74) input end, amplification by two kinds of shift frequency information that oscillator (221,222) produces by output transformer (80).Central authorities' transmitter is powered with direct current stabilizer by general shift frequency.
Accompanying drawing 3 is matching transformer, attenuator, isolating transformer, filter circuit figure, according to the resistance value of track circuit length change attenuation resistance (82), can adjust the reception facilities applied signal voltage.Constitute bandpass filter by element (83～106), its passband central frequency is 300,400,500HZ.Element (107～111) constitutes the two-shipper buffer circuit, and in order to reduce influencing each other of master, pair reception facilities, the frequency-shift signaling that track transmits is connected to main, pair receptor respectively by isolating transformer (108,109).
The I end of accompanying drawing 4 middle orbit circuit and II end-receiver (223) and (224), its mouth is control relay (226), (227) respectively, form AND circuit by 226 and 227 and control track relay again.Receptor (223) is identical with the circuit structure of (224), and its working power is supplied with by direct current regulation circuit (225).The alternating current 220V power supply becomes direct supply through voltage transformer (188) and rectifier bridge (189), and through three terminal regulator (192,193) output ± 12V direct supply, this power supply is again through three terminal regulator (196,197) output ± 8V direct supply.Another group coil of the secondary side of voltage transformer (188) (J
1, J
2) output 26V source of AC.Above-mentioned three kinds of power supplys are all in order to power to receptor (223,224).
Receptor in the accompanying drawing 4 (223), (224) all consist of the following components: emitter-follower (114), slicer (118,119), limit are put amplitude discrimination circuit (123), discriminator (130), frequency selecting amplifier (163), switch circuit (176), the solid-state relay circuit of safety-type (184) etc.Frequency-shift signaling by isolating transformer (108) input demodulates low-frequency information by 114,118,119,123,130, after amplifying signal, frequency selecting amplifier (163) promotes switch circuit (176), and output low frequency impulse singla, this signal makes solid-state relay circuit (184) remain on mode of operation, thereby reaches the purpose of control track relay (226).Above-mentioned each circuit link mainly is made of op amp, and circuit form is different, and amplitude discrimination circuit (123) adopts anti-phase type Schmidt circuit; Discriminator (130) and frequency selecting amplifier (163) adopt active second-order bandpass filter circuit.
Claims (5)
1, the present invention is a kind of uninsulated automatic block equipment in railway signal technology field, be to utilize rail as information transfer channel, send shift frequency information continuously by the low-frequency square-wave signal modulation, with the rail induction uninsulated automatic block equipment that major parts such as central transmitter, rail sensor, filter and receptor constitute, it is characterized in that central transmitter sends track circuit and two kinds of information of cab signal simultaneously after checking orbit occupancy or idle condition; Receptor adopts voltage, the current input circuit of belt track sensor, and the reception facilities juxtaposition of adjacent track circuit section is provided with.
2, it is characterized in that according to the described rail induction uninsulated automatic block of claim 1 central transmitter and receptor can be made of CMOS integrated circuit or discrete electronic component.
3,, it is characterized in that the electric current, the voltage-type input circuit that adopt rail sensor and track transformer to form receptor according to claim 1,2.
4,, it is characterized in that adopting inductance element to form rail sensor and track transformer according to claim 1,2,3.
5,, it is characterized in that transmitter and receptor can establish single cover or duplex system according to claim 1,2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111311 CN1028287C (en) | 1992-10-16 | 1992-10-16 | Rail induction uninsulated automatic block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111311 CN1028287C (en) | 1992-10-16 | 1992-10-16 | Rail induction uninsulated automatic block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072144A true CN1072144A (en) | 1993-05-19 |
| CN1028287C CN1028287C (en) | 1995-04-26 |
Family
ID=4945282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111311 Expired - Fee Related CN1028287C (en) | 1992-10-16 | 1992-10-16 | Rail induction uninsulated automatic block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1028287C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126508A (en) * | 2010-01-18 | 2011-07-20 | 株式会社日立制作所 | Train detector and train security device for dual gauge track circuit |
| CN103581086A (en) * | 2013-03-25 | 2014-02-12 | 柳州铁道职业技术学院 | Railway sand table frequency shift signal demodulator |
| CN104714127A (en) * | 2015-02-04 | 2015-06-17 | 中国铁路总公司 | Track circuit traction current interference resistance testing device based on virtual instrument |
| CN106585668A (en) * | 2016-12-09 | 2017-04-26 | 交控科技股份有限公司 | Method and device for holding track codes of track circuit fuzzy area |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830239B (en) * | 2010-03-02 | 2012-04-18 | 王国荣 | Intelligent shunt circuit for section track and route type piecewise unlocking method |
-
1992
- 1992-10-16 CN CN 92111311 patent/CN1028287C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126508A (en) * | 2010-01-18 | 2011-07-20 | 株式会社日立制作所 | Train detector and train security device for dual gauge track circuit |
| CN102126508B (en) * | 2010-01-18 | 2014-04-16 | 株式会社日立制作所 | Train detector and train security device for dual gauge track circuit |
| CN103581086A (en) * | 2013-03-25 | 2014-02-12 | 柳州铁道职业技术学院 | Railway sand table frequency shift signal demodulator |
| CN103581086B (en) * | 2013-03-25 | 2017-01-04 | 柳州铁道职业技术学院 | Railway sand table frequency shift signal demodulator |
| CN104714127A (en) * | 2015-02-04 | 2015-06-17 | 中国铁路总公司 | Track circuit traction current interference resistance testing device based on virtual instrument |
| CN106585668A (en) * | 2016-12-09 | 2017-04-26 | 交控科技股份有限公司 | Method and device for holding track codes of track circuit fuzzy area |
| CN106585668B (en) * | 2016-12-09 | 2018-04-17 | 交控科技股份有限公司 | The railway code keeping method and device of a kind of track circuit confusion region |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1028287C (en) | 1995-04-26 |
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