CN203601300U - Two-out-of-two alternating current continuous track circuit - Google Patents
Two-out-of-two alternating current continuous track circuit Download PDFInfo
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- CN203601300U CN203601300U CN201320777763.8U CN201320777763U CN203601300U CN 203601300 U CN203601300 U CN 203601300U CN 201320777763 U CN201320777763 U CN 201320777763U CN 203601300 U CN203601300 U CN 203601300U
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Abstract
The utility model provides a two-out-of-two alternating current continuous track circuit which comprises an impedance regulation circuit, a first isolator, a second isolator, a first voltage regulation circuit, a second voltage regulation circuit, a first analog to digital (AD) converter, a second AD converter, a first central processing unit (CPU), a second CPU and a third isolator. The impedance regulation circuit simulates impedance features of a traditional 480 relay to ensure compatibility with the traditional alternating current continuous track circuit. By means of the two-out-of-two structure, the two-out-of-two alternating current continuous track circuit has two independent and isolated operation channels, and detection level of shunt sensitivity is improved. The two-out-of-two alternating current continuous track circuit can replace the traditional 480 relay and effectively improve anti-thunder performance and security.
Description
Technical field
The utility model relates to continuous exchange of track circuit technical field, specifically a kind of two gets two continuous exchange of track circuit.
Background technology
Whether track circuit is the circuit forming take the rail of a section of railway track circuit as conductor, taken, also for control signal device or switching device, to guarantee the equipment of traffic safety for automatic, this section of circuit of continuous detecting by rolling stock.Within the scope of track circuit, the state without wheel when taking is called regulated state of a track circuit, has the state of wheel when taking to be called point line state of track circuit.
Traditional continuous exchange of track circuit adopts 480 track circuits, as shown in Figure 1,480 track circuits generally adopt main linely connected power sup ply mode, by drawing a pair of or two pairs of supply mains (use cable conductor) in signal tower, to the feed end track supply transformer BG1-50 power supply of each track circuit section, track relay GJ adopts JZXC-480 type relay, is located in signal tower, is connected with cable box (relay transformer) BZ4 of receiving end by cable.This 480 track circuit exists the shortcomings such as shunting sensitivity is low, lightning protection properties is poor, and can not avoid common mode interference, has affected the safety of computer interlock system and train operation.
Utility model content
The purpose of this utility model is to provide a kind of two to get two continuous exchange of track circuit, to solve problems of the prior art.
The technical solution of the utility model is:
Two get a continuous exchange of track circuit of two, comprising: impedance adjustment circuit, for simulating 480 traditional relay impedance characteristics; And the first arithmetic element and the second arithmetic element that are connected with the mouth of described impedance adjustment circuit respectively; Described the first arithmetic element comprises the first isolator, the first voltage-regulating circuit, the first AD converter and a CPU; Described the second arithmetic element comprises the second isolator, second voltage Circuit tuning, the second AD converter and the 2nd CPU; The mouth of described impedance adjustment circuit is connected with the input end of a CPU with the first AD converter by the first isolator, the first voltage-regulating circuit successively, is connected successively by the second isolator, second voltage Circuit tuning with the second AD converter with the input end of the 2nd CPU; A described CPU is connected by the 3rd isolator alternately with the 2nd CPU.
Described two get two continuous exchange of track circuit, and described the first arithmetic element also comprises the first self-checking circuit, the input of described the first self-checking circuit for prescind the first voltage-regulating circuit under the control of a CPU; Described the second arithmetic element also comprises the second self-checking circuit, the input of described the second self-checking circuit for prescind second voltage Circuit tuning under the control of the 2nd CPU.
Described two get two continuous exchange of track circuit, and described the first isolator is specially current mode isolating transformer, and described the second isolator is specially voltage-type isolating transformer.
Described two get two continuous exchange of track circuit, and described the first voltage-regulating circuit and second voltage Circuit tuning are specially two kind is identical and integrated operational amplifier that model is different.
Described two get two continuous exchange of track circuit, and described the first self-checking circuit and the second self-checking circuit are specially low conduction impedance N-type metal-oxide-semiconductor.
Described two get two continuous exchange of track circuit, and described the 3rd isolator is specially digital isolator or optocoupler.
As shown from the above technical solution, impedance adjustment circuit of the present utility model is simulated 480 traditional relay impedance characteristics, and design impedance is 480 Europe, has guaranteed the compatibility with traditional continuous exchange of track circuit; Adopt two to get two structures, there is the arithmetic channel of two independences and isolation, improve the detection level of shunting sensitivity; The utility model can replace 480 traditional relays, effectively improves lightning protection and the safety of track circuit.
Preferably, two isolators adopt respectively current mode isolating transformer and the design of voltage-type isolating transformer, have improved the ability of the anti-common mode interference of circuit, have also improved inter-stage isolation simultaneously.
Preferably, two voltage-regulating circuits adopt has identical function and the different integrated operational amplifier of performance makes voltage range meet the requirement of AD converter voltage sample, has improved the anti-common mode interference ability of circuit.
Preferably, by design self-checking circuit, can timing carry out self check to the mode of operation of voltage-regulating circuit, improve the safety of circuit.
Accompanying drawing explanation
Fig. 1 is traditional continuous exchange of track circuit schematic diagram;
Fig. 2 is hardware configuration schematic diagram of the present utility model;
Fig. 3 is schematic circuit diagram of the present utility model.
The specific embodiment
Further illustrate the utility model with specific embodiment by reference to the accompanying drawings below.
As shown in Figure 2, a kind of two get two continuous exchange of track circuit, comprise impedance adjustment circuit 1, the first isolator 21, the second isolator 22, the first self-checking circuit 31, the second self-checking circuit 32, the first voltage-regulating circuit 41, second voltage Circuit tuning 42, the first AD converter 51, the second AD converter 52, a CPU61, the 2nd CPU62 and the 3rd isolator 7.The first isolator 21, the first self-checking circuit 31, the first voltage-regulating circuit 41, the first AD converter 51 and a CPU61 form the first arithmetic channel, the second isolator 22, the second self-checking circuit 32, second voltage Circuit tuning 42, the second AD converter 52, the 2nd CPU62 form the second arithmetic channel, independent and isolation between two arithmetic channels.
The mouth of impedance adjustment circuit 1 is connected with the input end of a CPU61 with the first AD converter 51 by the first isolator 21, the first self-checking circuit 31, the first voltage-regulating circuit 41 successively, and the mouth of impedance adjustment circuit 1 is connected with the input end of the 2nd CPU62 with the second AD converter 52 by the second isolator 22, the second self-checking circuit 32, second voltage Circuit tuning 42 successively.The one CPU61 is connected by the 3rd isolator 7 alternately with the 2nd CPU62.The first self-checking circuit 31 is arranged on the input end of the first voltage-regulating circuit 41, the input of prescinding the first voltage-regulating circuit 41 under the control of a CPU61; The second self-checking circuit 32 is arranged on the input end of second voltage Circuit tuning 42, the input of prescinding second voltage Circuit tuning 42 under the control of the 2nd CPU62.
Principle of work of the present utility model:
Railway voltage is boosted by cable box, inputs the first isolator 21 and the second isolator 22 through wire fuse F1 protection by impedance adjustment circuit 1; The first isolator 21 adopts current mode isolating transformer, railway voltage is transferred to the first voltage-regulating circuit 41 by mode with current coupling, the second isolator 22 adopts voltage-type isolating transformer, in the mode of voltage coupling, railway voltage is transferred to second voltage Circuit tuning 42; The first voltage-regulating circuit 41 and second voltage Circuit tuning 42 adopt integrated operational amplifier, respectively input railway voltage are wherein adjusted, and railway voltage are adjusted to the input voltage range of AD converter, output ripple direct current signal; The first AD converter 51 output signal of the first voltage-regulating circuit 41 is sampled and change after transfer to a CPU61, the second AD converter 52 output signal of second voltage Circuit tuning 42 is sampled and change after transfer to the 2nd CPU62; The one CPU61 and the 2nd CPU62 carry out computing to the railway voltage signal receiving separately respectively, if the numerical value of railway voltage is higher than default threshold value, be judged to be orbit adjusting state, if the numerical value of railway voltage, lower than default threshold value, is judged to be track branch state; The one CPU61 and the 2nd CPU62 exchange comparison by result of determination separately by the 3rd isolator 7 respectively, if result of determination is consistent, result of determination are reported to interlock system, if result of determination is inconsistent, reporting fault export orientation are surveyed safely; The first self-checking circuit 31 and the second self-checking circuit 32 adopt low conduction impedance N-type metal-oxide-semiconductor, the one CPU61 prescinds the incoming signal of the first voltage-regulating circuit 41 by the first self-checking circuit 31 timings, the 2nd CPU62 prescinds the incoming signal of second voltage Circuit tuning 42 by the second self-checking circuit 32 timings, judge that respectively whether the first voltage-regulating circuit 41 and second voltage Circuit tuning 42 are in normal mode of operation, guarantee the reliable Detection to low pressure.
The utility model adopts two to get two structures, and Jiang Yi road input railway voltage is converted to two-way output, delivers to respectively two microprocessors, and the Arbitrary Fault pattern of any single components and parts can not cause microprocessor export orientation hazardous side.In addition, two microprocessor CPUs to the waveform analysis of the railway voltage signal receiving separately relatively after, can tentatively judge and the failure mode of isolator in front stage circuits improve fault location and maintenance efficiency.For more than two and two components and parts simultaneous faults, according to EN50126 and IEC61508 standard, the failure rate calculating is much smaller than the requirement to railway security integrity levels 4 in Europe superscript, and this circuit meets the highest safety integrity level requirement in Europe superscript.
The concrete components and parts failure mode of considering comprises: (1) resistance: short circuit, short circuit, resistance random variation; (2) isolating transformer: monolateral coil opens circuit, I/O terminal shortcircuit, primary and secondary coil short circuit, effectively the turn ratio changes; (3) integrated operational amplifier: input end short circuit, input end open circuit, the parasitic concussion of output, inherent failure etc.; (4) electric capacity: short circuit, short circuit, capacitance random variation; (5) NMOS pipe: any two intereelectrode short-circuits, between the two poles of the earth, open circuit arbitrarily, turn-on voltage variation.
The above embodiment is only that preferred implementation of the present utility model is described; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (6)
1. two get a continuous exchange of track circuit of two, it is characterized in that, comprising:
Impedance adjustment circuit, for simulating 480 traditional relay impedance characteristics; And the first arithmetic element and the second arithmetic element that are connected with the mouth of described impedance adjustment circuit respectively;
Described the first arithmetic element comprises the first isolator, the first voltage-regulating circuit, the first AD converter and a CPU;
Described the second arithmetic element comprises the second isolator, second voltage Circuit tuning, the second AD converter and the 2nd CPU;
The mouth of described impedance adjustment circuit is connected with the input end of a CPU with the first AD converter by the first isolator, the first voltage-regulating circuit successively, is connected successively by the second isolator, second voltage Circuit tuning with the second AD converter with the input end of the 2nd CPU;
A described CPU is connected by the 3rd isolator alternately with the 2nd CPU.
2. according to claim 1 two get two continuous exchange of track circuit, it is characterized in that, described the first arithmetic element also comprises the first self-checking circuit, the input of described the first self-checking circuit for prescind the first voltage-regulating circuit under the control of a CPU;
Described the second arithmetic element also comprises the second self-checking circuit, the input of described the second self-checking circuit for prescind second voltage Circuit tuning under the control of the 2nd CPU.
3. according to claim 1 two get two continuous exchange of track circuit, it is characterized in that, described the first isolator is specially current mode isolating transformer, and described the second isolator is specially voltage-type isolating transformer.
4. according to claim 1 two get two continuous exchange of track circuit, it is characterized in that, described the first voltage-regulating circuit and second voltage Circuit tuning are specially two kind are identical and integrated operational amplifier that model is different.
5. according to claim 2 two get two continuous exchange of track circuit, it is characterized in that, described the first self-checking circuit and the second self-checking circuit are specially low conduction impedance N-type metal-oxide-semiconductor.
6. according to claim 1 two get two continuous exchange of track circuit, it is characterized in that, described the 3rd isolator is specially digital isolator or optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777763.8U CN203601300U (en) | 2013-12-03 | 2013-12-03 | Two-out-of-two alternating current continuous track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777763.8U CN203601300U (en) | 2013-12-03 | 2013-12-03 | Two-out-of-two alternating current continuous track circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203601300U true CN203601300U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320777763.8U Withdrawn - After Issue CN203601300U (en) | 2013-12-03 | 2013-12-03 | Two-out-of-two alternating current continuous track circuit |
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| CN (1) | CN203601300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640597A (en) * | 2013-12-03 | 2014-03-19 | 合肥工大高科信息科技股份有限公司 | 2-vote-2 alternating current continuous type track circuit and detecting method thereof |
| CN111751609A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Method and system for 50Hz track signal detection and state identification |
-
2013
- 2013-12-03 CN CN201320777763.8U patent/CN203601300U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640597A (en) * | 2013-12-03 | 2014-03-19 | 合肥工大高科信息科技股份有限公司 | 2-vote-2 alternating current continuous type track circuit and detecting method thereof |
| CN103640597B (en) * | 2013-12-03 | 2015-12-16 | 合肥工大高科信息科技股份有限公司 | A kind of two get two continuous exchange of track circuit and method of inspection thereof |
| CN111751609A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Method and system for 50Hz track signal detection and state identification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |