Railway signal track circuit code sending and annunciator display dual verification method and system

Abstract

The invention discloses a railway signal track circuit code sending and annunciator display dual verification method and system, track circuit code sending and annunciator lighting are independent operation subsystems of a current signal system, and code sending errors or annunciator display errors are major potential safety hazards. On the premise that normal work of the two subsystems is not affected, first verification of railway signal track circuit information codes and signal machine display is established, then second verification of a railway signal track circuit key relay and a signal machine circuit key relay is carried out, dual verification is carried out to compare the consistency between the two systems, and the consistency of the two systems is improved. Related information is collected in real time and compared and analyzed, corresponding relation errors are found in time through double comparison, potential safety hazards are alarmed in advance, the method can serve as an important means for fault detection, the operation and maintenance efficiency can be improved, and safe operation can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of railway signal control, and in particular to a railway signal track circuit code sending and signal machine display double verification method and system. Background Art

[0002] Track circuit is one of the basic equipment of railway signal system. Its main function is to realize train occupancy check through the working status of track circuit and send track circuit information code to locomotive signal equipment to command train operation, so as to ensure the safety of train operation and improve the operation efficiency. Signal machine is one of the core equipment of railway signal system, which is used to send signal display to drivers and passengers to ensure the safety of train operation in the protected section and prevent train conflict or subversion. Track circuit indicates the operation of train by sending different information codes and signal machine through different colors and light display. There is a certain correlation between the content of track circuit information code of the approaching section of signal machine and the display of corresponding signal machine, such as track circuit HU code corresponds to signal machine red light, UU code corresponds to signal machine double yellow light, etc. At the same time, the logic of signal machine lighting circuit relay is consistent with the logic of track code circuit relay, so it can be used as the second check to verify the correctness of the two.

[0003] In actual engineering projects, once errors or omissions occur during the design or construction of railway signals, such as wiring errors in the track circuit code circuit or the signal lighting circuit, under certain conditions, the track circuit information code and the corresponding signal display will be inconsistent. In serious cases, the principle of "fault-guided safety" will be violated and major safety accidents such as signal upgrades will occur. With existing technical means, such as manual review and commissioning tests, it is difficult to detect some hidden errors and hidden dangers triggered by multiple accidental factors before an accident occurs. Problems are often exposed only after an accident occurs or even causes serious consequences. There are problems such as large workload, much repetitive work, and difficulty in detecting hidden errors.

[0004] Therefore, the first check can be performed using the correspondence between the track circuit information code and the signal light, and the second check can be performed using the comparison between the lighting circuit and the track circuit code circuit key relay. The probability of errors and omissions in double verification is much lower than the probability of errors and omissions in single verification. Therefore, a method for double verification of railway signal track circuit information code, signal display and key relay is proposed. When the double comparison finds that the information code, signal display and key relay are inconsistent, an alarm can be issued in time to ensure the safety of train operation and improve operation efficiency. Summary of the invention

[0005] The present application provides a railway signal track circuit code and signal machine display double verification method and system to solve the problems of existing methods such as relying on manual review or interlocking test to troubleshoot hidden dangers, which have the problems of large workload, much repetitive work, and difficulty in finding hidden errors.

[0006] According to the first aspect, an embodiment provides a method for double checking railway signal track circuit code and signal display, the method comprising:

[0007] Constructing a mapping relationship library of railway signal track circuit information codes and train signal display information, wherein the mapping relationship library stores mutual mapping relationships among track circuit information codes, signal display information, track circuit key relay status information, and signal circuit key relay status information;

[0008] Based on the pre-built mapping relationship library, a mutual mapping relationship among the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range is established;

[0009] Collecting real-time track circuit information codes and signal display information within the target station range, and performing a first comparison check on the mapping relationship between the collected real-time track circuit information codes and signal display information according to the established mutual mapping relationship between the track circuit information codes and signal display information within the target station range;

[0010] Collecting real-time track circuit key relay status information and signal circuit key relay status information within the target station, and performing a second comparison check on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information according to the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station;

[0011] If both the first comparison check and the second comparison check are correct, normal information is output, otherwise abnormal alarm information is output.

[0012] Furthermore, a mapping relationship library between railway signal track circuit information codes and train signal display information is constructed, specifically including:

[0013] Construct and store the mutual mapping relationship between track circuit information code and signal display information;

[0014] A mutual mapping relationship between the track circuit key relay status information corresponding to the track circuit information code and the signal machine circuit key relay status information corresponding to the signal machine display information is constructed and stored.

[0015] Furthermore, the train signal includes an entry signal, an exit signal, a passing signal, an approach signal and an approach signal, and the approach signal includes a train receiving or sending approach signal and a train sending approach signal.

[0016] Furthermore, the train signal display information includes lighting information.

[0017] Furthermore, a mutual mapping relationship between the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station is established, specifically including:

[0018] Based on the railway signal construction data, establish the mutual mapping relationship between the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range;

[0019] The railway signal construction data includes a station signal plan layout diagram, a section signal plan layout diagram, a station coded circuit diagram and a section automatic blocking circuit diagram.

[0020] Furthermore, real-time track circuit information codes and signal display information within the target station are collected, including:

[0021] Collect the signal output by the track circuit transmitter and parse it to obtain the information code. The track circuit includes the section track circuit, the station main line and the track circuit;

[0022] In the case of relay coding, the corresponding information code is determined by collecting the transmitter low-frequency code selection line voltage;

[0023] Collect the voltage or current information of the signal light core wire on the distribution board to obtain the signal display information.

[0024] Furthermore, real-time track circuit key relay status information and signal circuit key relay status information within the target station are collected, including:

[0025] By collecting the voltage or current information of the key relays in the signal circuit, the key relay status information of the signal circuit can be obtained;

[0026] By collecting the voltage or current information of the key relays in the track circuit, the status information of the key relays in the track circuit can be obtained.

[0027] Furthermore, the method further comprises:

[0028] During verification, it is necessary to first compare the relationship between the train's running direction and the signal's display direction. When the train's running direction is facing the signal's display direction, there is a corresponding relationship between the track circuit's information code and the signal's display information. At this time, verification is performed. When the signal's display direction is facing away from the train's running direction, the signal has no control effect on the train's operation.

[0029] Furthermore, the method further comprises:

[0030] Since the coding circuit of the track circuit with train control coding is directly driven by the train control logic and no relay is used for judgment, only the first comparison check is performed for the track circuit with train control coding.

[0031] According to the second aspect, an embodiment provides a railway signal track circuit code generation and signal machine display dual verification system, the system comprising:

[0032] A mapping relationship library construction module is used to construct a mapping relationship library of railway signal track circuit information codes and train signal display information, wherein the mapping relationship library stores mutual mapping relationships between track circuit information codes, signal display information, track circuit key relay status information, and signal circuit key relay status information;

[0033] An in-station mapping relationship building module is used to establish a mutual mapping relationship between track circuit information codes, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range based on the pre-built mapping relationship library;

[0034] A first comparison and verification module is used to collect real-time track circuit information codes and signal display information within the target station range, and perform a first comparison and verification on the mapping relationship between the collected real-time track circuit information codes and signal display information according to the established mutual mapping relationship between the track circuit information codes and signal display information within the target station range;

[0035] A second comparison and verification module is used to collect real-time track circuit key relay status information and signal circuit key relay status information within the target station range, and perform a second comparison and verification on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information according to the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station range;

[0036] The output module is used to output normal information if the first comparison check and the second comparison check are both correct, and output abnormal alarm information otherwise.

[0037] The present application provides a railway signal track circuit code and signal machine display double verification method and system, in the railway signal system, the corresponding relationship between the track circuit information code and the signal machine lighting and the key relay comparison between the lighting circuit and the track circuit code circuit are used for double verification, which has significant advantages compared with single verification. It has the following beneficial effects:

[0038] (1) Improve accuracy

[0039] First check: Check the corresponding relationship between the track circuit information code and the signal light. If the track circuit information code and the signal display are inconsistent, an alarm can be triggered in time. The first check can identify the inconsistency between the track circuit information code and the signal display caused by design errors and signal display errors.

[0040] Second level verification: By comparing and verifying the key relays of the lighting circuit and the track circuit coding circuit, the reliability of the signal system can be further ensured. The second level verification can identify the logical relationship within the circuit and detect problems such as circuit failure or abnormal relay status, thereby avoiding signal errors caused by circuit failure.

[0041] Double verification combines two different verification methods to verify from two levels: external display and internal circuit, greatly improving the accuracy of the signal system.

[0042] (2) Enhanced reliability

[0043] Reduce missed faults: Single verification may miss some faults due to limited verification range or insufficient verification methods. Double verification can complement each other through two different verification methods to reduce the possibility of missed faults.

[0044] Improve fault location accuracy: When a signal system fails, double verification can provide more fault information to help maintenance personnel locate the fault point more accurately, thereby speeding up fault repair.

[0045] The coding circuit of the track circuit of the train control coding is directly driven by the train control logic. No relays are used for judgment, and there are no problems such as circuit failure or abnormal relay status. Therefore, the track involving train control coding cannot be double-checked. Using a single check method can also ensure the safety of train operation and improve operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A flow chart of a railway signal track circuit code generation and signal machine display double verification method provided by one embodiment of the present invention;

[0047] Figure 2An example of a signal plane layout diagram in a method for double verification of railway signal track circuit code generation and signal machine display provided by an embodiment of the present invention;

[0048] Figure 3 An example of a track section coding circuit diagram in a railway signal track circuit coding and signal machine display double verification method provided by an embodiment of the present invention;

[0049] Figure 4 An example of a circuit diagram for lighting a station entry signal in a method for double checking a railway signal track circuit code and a signal display provided by an embodiment of the present invention;

[0050] Figure 5 A schematic diagram of the logical structure of a railway signal track circuit code generation and signal machine display dual verification system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0052] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0053] The first embodiment of the present invention provides a railway signal track circuit code and signal machine display double verification method, as shown below Figure 1 Provide detailed explanation.

[0054] like Figure 1As shown, in step S100, a mapping relationship library of railway signal track circuit information codes and train signal display information is constructed, and the mapping relationship library stores the mutual mapping relationship between track circuit information codes, signal display information, track circuit key relay status information and signal circuit key relay status information.

[0055] The above steps specifically include:

[0056] Step S110, constructing and storing a mutual mapping relationship between the track circuit information code and the signal display information;

[0057] Step S120, constructing and storing a mutual mapping relationship between the track circuit key relay state information corresponding to the track circuit information code and the signal machine circuit key relay state information corresponding to the signal machine display information.

[0058] In this embodiment, according to relevant specifications and rules, track circuit information codes and signal display information are sorted out, and a corresponding relationship between the two is established, specifically including:

[0059] In the automatic block section and station pre-superimposed frequency shift coding circuit, the ZPW-2000 series transmitter has a total of 18 low-frequency information codes, commonly used ones include L code, LU code, U code, U2S code, U2 code, UUS code, UU code, HB code, HU code, etc.

[0060]

[0061] Commonly used train signals include entry signals, exit signals, passing signals, approach signals and route signals. The basic colors include red (stop), yellow (caution or slow down), green (run at the specified speed) and moon-white (shunting signal or guide signal). The displays of various signals are as follows:

[0062] Entry signal: red light, green light, yellow light, green and yellow light, double yellow light, yellow flashing yellow light, red and white light;

[0063] Departure signal: red light, green light, yellow light, green-yellow light, double green light, moon-white light;

[0064] Passing traffic lights: red light, green light, yellow light, green and yellow light;

[0065] Approaching signal: green light, yellow light, green and yellow light;

[0066] Traffic lights for receiving and sending vehicles: red light, green light, yellow light, green and yellow light, double yellow light, yellow flashing yellow light, red and white light, moon-white light;

[0067] Departure route signal lights: red light, green light, yellow light, green and yellow light, moon-white light.

[0068] The corresponding relationship between the railway signal track circuit information code and the first level of verification displayed by the signal machine is as follows:

[0069] (1) Correspondence between the station entry / train receiving route / train receiving and dispatching route signal display and the approaching section information code:

[0070] Signal display Proximity Segment Information Code red light HU code Yellow Light U code or U2 code or U2S code Double yellow light UU Code Yellow flashing yellow light UUS code Green Light Size L or above Green and yellow light LU code Red and white lights HB code

[0071] (2) Correspondence between exit / departure route signal and approach section information code:

[0072] Signal display Proximity Segment Information Code red light HU code Yellow Light Main line: U code Green Light Main line: Size L or above Green and yellow light Main line: LU code Double green light Main line: L size

[0073] When the train approach is the siding, the approach section information of the exit signal will only display the UU code or UUS code, which is irrelevant to the signal display and therefore has no comparative significance. The above only lists the display of the exit signal and the approach section information code when the train approach is the main line.

[0074] (3) Correspondence between the passing signal and the approach section information code:

[0075]

[0076]

[0077] (4) Correspondence between approach signal and approach section information code:

[0078] Signal display Proximity Segment Information Code Yellow Light U code Green Light Size L

[0079] The signal light display circuit and the information code sending circuit are composed of relay circuits. The core and key logic basis of the two circuits are consistent. Selecting key relays from the signal light display circuit and the information code sending circuit for a second comparison can eliminate problems such as occasional wrong display through display comparison.

[0080] The corresponding key relays for the second level of verification of the key relays of railway signal track circuits and signal machine circuits are sorted out as follows:

[0081] (1) Correspondence between the station entry / train receiving route / train receiving and dispatching route signal display and the approaching section information code:

[0082]

[0083]

[0084] (2) Correspondence between exit / departure route signal and approach section information code:

[0085]

[0086] When the train approach is the siding, the approach section information of the exit signal will only display the UU code or UUS code, which is irrelevant to the signal display and therefore has no comparative significance. The above only lists the display of the exit signal and the approach section information code and its main relay when the train approach is the main line.

[0087] (3) Correspondence between the passing signal and the approaching section information code: (Relay coding circuit)

[0088]

[0089]

[0090] (4) Correspondence between approach signal and approach section information code:

[0091]

[0092] Note: The coding circuit of the track circuit of the train control coding is directly driven by the train control logic, and no relay is used for judgment. Therefore, the track involving train control coding cannot use the double verification method, and can only use the single verification method.

[0093] like Figure 1 As shown, in step S200, based on the pre-built mapping relationship library, a mutual mapping relationship between the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range is established.

[0094] In this embodiment, based on the station signal plan layout, section signal plan layout, station coded circuit diagram, section automatic blocking circuit diagram and other information, the correspondence between the train signals that issue codes approaching the section within the station control range and the sections approaching these signals is sorted out to prepare for the consistency check of the signal display and the track circuit information code.

[0095] like Figure 1 As shown, in step S300, the real-time track circuit information code and signal display information within the target station are collected, and based on the established mutual mapping relationship between the track circuit information code and the signal display information within the target station, a first comparison check is performed on the mapping relationship between the collected real-time track circuit information code and the signal display information.

[0096] The above steps specifically include:

[0097] S310, collecting the signal output by the track circuit transmitter and parsing it to obtain the information code, the track circuit includes the section track circuit, the station main line and the track circuit;

[0098] S320, in the case of relay coding, the corresponding information code is determined by collecting the transmitter low frequency code selection line voltage;

[0099] S330, collect the voltage or current information of the light core line of the signal light on the distribution board to obtain the signal light display information.

[0100] In this embodiment, the collected data of the first level of verification of the railway signal track circuit information code and the signal display include: collecting the output signal of the track circuit transmitter and parsing its information code (the relay coding can directly collect the transmitter low-frequency code to select the line voltage and determine the corresponding information code), and collecting the voltage or current information of the core line of the signal point on the distribution board.

[0101] Specifically, the collection of information codes: collect the information codes of the section track circuit, the main line in the station and the track circuit; in the case of train control coding, collect the output signal of the track circuit transmitter and parse its information code; in the case of relay coding, directly collect the transmitter low-frequency code to select the line voltage and directly determine the corresponding information code.

[0102] Collection of signal display information: by collecting the voltage or current information of the signal point core wire on the distribution board, including: collecting the voltage or current information of the signal point core wire passing through the section; collecting the voltage or current information of the point core wire of the main line approach signal, entry signal, approach signal and exit signal in the station; collecting the voltage or current information of the point core wire of the track exit signal in the station.

[0103] It should be noted that in this embodiment, when checking, it is necessary to first compare the relationship between the train running direction and the display direction of the signal. When the train running direction is facing the display direction of the signal, there is a corresponding relationship between the information code of the track circuit and the information displayed by the signal. At this time, the check is performed. When the display direction of the signal is facing away from the train running direction, the signal has no control effect on the train operation. Therefore, this embodiment also involves the collection of the following information:

[0104] This embodiment also includes: collecting the switching quantity information of the direction relay, including: when the running direction of the train is facing the display direction of the signal, there is a corresponding relationship between the information code of the track circuit and the signal, so it is necessary to collect the switching quantity information of the direction relay. In the case of train control coding, the voltage of the front node of the track circuit direction relay is collected; in the case of relay coding, the front node of the forward relay of the section and the rear node of the reverse relay of the section are collected.

[0105] This embodiment also includes: collecting direction information of the signal, including that when the signal is facing away from the running direction of the train, the signal has no control effect on the running of the train, therefore, it is necessary to collect the direction information of the signal.

[0106] like Figure 1As shown, in step S400, real-time track circuit key relay status information and signal circuit key relay status information within the target station are collected, and based on the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station, a second comparison check is performed on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information.

[0107] The above steps specifically include:

[0108] Step S410, acquiring the key relay status information of the signal circuit by collecting the voltage or current information of the key relay in the signal circuit;

[0109] Step S420: Acquire the status information of the key relays in the track circuit by collecting the voltage or current information of the key relays in the track circuit.

[0110] In this embodiment, the collected data of the second level verification of the key relays of the railway signal track circuit and the key relays of the signal machine circuit includes collecting the voltage or current information of the key relays in the signal machine circuit and collecting the voltage or current information of the key relays of the track circuit. Note: The track circuit coding circuit of the train control coding is directly driven by the train control logic, and no relay is used for judgment. Therefore, the track involving the train control coding cannot use the double verification method, and can only use the single verification method.

[0111] In this embodiment, according to the correspondence between the station track circuit and the signal established in step S200, the collected station track circuit information code and the signal display information are compared and analyzed in real time; and the key relays corresponding to the collected station track circuit information code and the key relays corresponding to the signal display information are compared and analyzed again in real time. Specifically, it includes:

[0112] For intervals:

[0113] The collected information codes of the automatic block section track section and the non-automatic block approach section are compared and analyzed in real time with the display information of the corresponding section passing signals, station entry signals and approach signals; then the corresponding key relays of the collected information codes of the automatic block section track section and the non-automatic block approach section are compared and analyzed in real time with the corresponding key relays of the display information of the corresponding section passing signals, station entry signals and approach signals.

[0114] For the main line within the station:

[0115] The collected information codes of the mainline track section in the station are compared and analyzed in real time with the display information of the corresponding mainline exit signal and approach signal; then the key relays corresponding to the collected information codes of the mainline track section in the station are compared and analyzed in real time with the key relays corresponding to the display information of the corresponding mainline exit signal and approach signal.

[0116] like Figure 1 As shown, in step S500, if the first comparison check and the second comparison check are both correct, normal information is output, otherwise abnormal alarm information is output.

[0117] Output results: Compare and analyze the collected information in real time, and issue an alarm in time when a contradiction is found between the track circuit information code and the signal display.

[0118] Specific operation examples:

[0119] S1: According to the Railway Signal Design Specifications and Signal Display Relationship Diagram, organize the information displayed by the station entry signal and establish the corresponding relationship between the two;

[0120] S101: The track circuit information codes of the three approach sections of the downline main line mainly include L code or above, LU code, U code, U2S code, U2 code, UUS code, UU code, HB code, HU code, etc.

[0121] S102: The information displayed by the station entry signal mainly includes red light, green light, yellow light, green and yellow light, double yellow light, yellow flashing yellow light, and red and white light;

[0122] S103: The corresponding relationship between the track circuit information code of the third approach section of the downline main line and the information displayed by the station entry signal is shown in the following table:

[0123] Signal display Three proximity section information codes red light HU code Yellow Light U code or U2 code or U2S code Double yellow light UU Code Yellow flashing yellow light UUS code Green Light Size L or above Green and yellow light LU code Red and white lights HB code

[0124] S104: The corresponding relationship between the key relays of the track circuit information code of the third approach section of the downline main line and the key relays of the station entry signal display information is shown in the following table:

[0125]

[0126]

[0127] S2: According to the railway signal construction drawings, such as the station signal plan layout, section signal plan layout, station coded circuit diagram and section automatic block circuit diagram, etc., organize the track circuit and signal machine related information, and establish the corresponding relationship between the section 1043G and X station entry signal machine of the station, such as Figure 2 As shown;

[0128] S201: Downlink mainline 1043G information codes include L code or above, LU code, U code, UUS code, UU code, U2 code, U2S code, HB code, HU code;

[0129] S202: The X station entry signal displays information including red light, green light, yellow light, green and yellow light, double yellow light, and red and white light;

[0130] S203: The corresponding relationship between the 1043G information code and the X station signal display information is shown in the following table:

[0131] X signal display 1043G information code red light HU code Yellow Light U code or U2 code Double yellow light UU Code Green Light Size L or above Green and yellow light LU code Red and white lights HB code

[0132] S203: The corresponding relationship between the key relay of 1043G information code and the key relay of X station signal display information is shown in the following table:

[0133]

[0134] S3: Collect data, including:

[0135] S301: Collect the voltages of the 1043G transmitter's low-frequency code selection lines HU code (F3), U code (F12), UU code (F11), U2 code (F14), L code (F17), LU code (F15) and HB code (F5), and determine the corresponding information code. The JC code (F2) is reverse code transmission and is not collected. Collect the status of the 1043G transmitter's LXJ2F, ZXJF, LUXJF, and TXJF relays. The code transmission circuit is as follows: Figure 3 As shown;

[0136] S302: Collecting switch quantity information of direction relay QZJ and direction information of X station entry signal;

[0137] S303: Collect the current information of the 1U, L, H, 2U, and YB light core wires of the X station entry signal on the distribution board, collect the status of the LXJ, ZXJ, LUXJ, and TXJ relays of the X station entry signal, and the lighting circuit Figure 4 As shown;

[0138] S4: Real-time comparison and analysis. When the QZJ in the downward positive direction is sucked up, the collected 1043G information code and the X station entry signal display information are compared and analyzed in real time according to the correspondence between the station track circuit and the signal established in step S2; secondary real-time comparison and analysis. The X station entry signal and the 1043G approach signal corresponding key relays are compared and analyzed again in real time.

[0139] S5: Output the result, compare and analyze the collected information in real time, and issue an alarm message in time when it is found that the relationship between the track circuit information code and the signal display does not conform to the corresponding relationship determined in step S2. For example, if 1043G sends the HU code, and the X station entry signal shows a non-red light at this time, it means that the station entry signal may have a safety malfunction hazard of upgrading the display or the code sending circuit, and issue an alarm message in time. Or if the X station entry signal LXJ falls, and the LXJF of 1043G is sucked up at this time, it means that the station entry signal may have a safety malfunction hazard of upgrading the display or the code sending circuit, and issue an alarm message in time.

[0140] Track circuit coding and signal lighting are currently independently operated subsystems of the signal system, and coding errors or signal display errors are major safety hazards. The present invention establishes a first level of verification of railway signal track circuit information codes and signal display without affecting the normal operation of the two subsystems, and then performs a second level of verification of railway signal track circuit key relays and signal circuit key relays, performs double verification to compare the consistency between the two systems, collects relevant information in real time and performs comparative analysis, double comparison, and thus timely discovers corresponding relationship errors and gives early alarms for safety hazards. The method and system can be used as an important means of fault detection, and can improve operation and maintenance efficiency and ensure safe operation.

[0141] Corresponding to the above-disclosed method for double checking of railway signal track circuit code and signal display, the embodiment of the present invention further discloses a system for double checking of railway signal track circuit code and signal display, such as Figure 5 As shown, it specifically includes:

[0142] A mapping relationship library construction module is used to construct a mapping relationship library of railway signal track circuit information codes and train signal display information, wherein the mapping relationship library stores mutual mapping relationships between track circuit information codes, signal display information, track circuit key relay status information, and signal circuit key relay status information;

[0143] An in-station mapping relationship building module is used to establish a mutual mapping relationship between track circuit information codes, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range based on the pre-built mapping relationship library;

[0144] A first comparison and verification module is used to collect real-time track circuit information codes and signal display information within the target station range, and perform a first comparison and verification on the mapping relationship between the collected real-time track circuit information codes and signal display information according to the established mutual mapping relationship between the track circuit information codes and signal display information within the target station range;

[0145] A second comparison and verification module is used to collect real-time track circuit key relay status information and signal circuit key relay status information within the target station range, and perform a second comparison and verification on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information according to the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station range;

[0146] The output module is used to output normal information if the first comparison check and the second comparison check are both correct, and output abnormal alarm information otherwise.

[0147] It should be noted that, for the detailed description of a railway signal track circuit coding and signal display dual verification system provided in an embodiment of the present invention, reference can be made to the relevant description of a railway signal track circuit coding and signal display dual verification method provided in an embodiment of the present application, which will not be repeated here.

[0148] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0149] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A railway signal track circuit code and signal display double verification method, characterized in that: The method comprises: Constructing a mapping relationship library of railway signal track circuit information codes and train signal display information, wherein the mapping relationship library stores mutual mapping relationships among track circuit information codes, signal display information, track circuit key relay status information, and signal circuit key relay status information; Based on the pre-built mapping relationship library, a mutual mapping relationship among the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range is established; Collecting real-time track circuit information codes and signal display information within the target station range, and performing a first comparison check on the mapping relationship between the collected real-time track circuit information codes and signal display information according to the established mutual mapping relationship between the track circuit information codes and signal display information within the target station range; Collecting real-time track circuit key relay status information and signal circuit key relay status information within the target station, and performing a second comparison check on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information according to the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station; If both the first comparison check and the second comparison check are correct, normal information is output, otherwise abnormal alarm information is output.

2. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: Construct a mapping relationship library between railway signal track circuit information codes and train signal display information, including: Construct and store the mutual mapping relationship between track circuit information code and signal display information; A mutual mapping relationship between the track circuit key relay status information corresponding to the track circuit information code and the signal machine circuit key relay status information corresponding to the signal machine display information is constructed and stored.

3. A railway signal track circuit code generation and signal display double verification method as claimed in claim 2, characterized in that: Train signals include entry signals, exit signals, passing signals, approach signals and route signals. The route signals include receiving or sending train route signals and sending train route signals.

4. A railway signal track circuit code generation and signal display double verification method as claimed in claim 2, characterized in that: The information displayed by the train signal includes lighting information.

5. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: Establish the mapping relationship between the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station, including: Based on the railway signal construction data, establish the mutual mapping relationship between the track circuit information code, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range; The railway signal construction data includes a station signal plan layout diagram, a section signal plan layout diagram, a station coded circuit diagram and a section automatic blocking circuit diagram.

6. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: Collect real-time track circuit information codes and signal display information within the target station, including: Collect the signal output by the track circuit transmitter and parse it to obtain the information code. The track circuit includes the section track circuit, the station main line and the track circuit; In the case of relay coding, the corresponding information code is determined by collecting the transmitter low-frequency code selection line voltage; Collect the voltage or current information of the signal light core wire on the distribution board to obtain the signal display information.

7. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: Collect real-time track circuit key relay status information and signal circuit key relay status information within the target station, including: By collecting the voltage or current information of the key relays in the signal circuit, the key relay status information of the signal circuit can be obtained; By collecting the voltage or current information of the key relays in the track circuit, the status information of the key relays in the track circuit can be obtained.

8. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: The method further comprises: During verification, it is necessary to first compare the relationship between the train's running direction and the signal's display direction. When the train's running direction is facing the signal's display direction, there is a corresponding relationship between the track circuit's information code and the signal's display information. At this time, verification is performed. When the signal's display direction is facing away from the train's running direction, the signal has no control effect on the train's operation.

9. A railway signal track circuit code generation and signal display double verification method as claimed in claim 1, characterized in that: The method further comprises: Since the coding circuit of the track circuit with train control coding is directly driven by the train control logic and no relay is used for judgment, only the first comparison check is performed for the track circuit with train control coding.

10. A railway signal track circuit code and signal display double verification system, characterized in that: The system comprises: A mapping relationship library construction module is used to construct a mapping relationship library of railway signal track circuit information codes and train signal display information, wherein the mapping relationship library stores mutual mapping relationships between track circuit information codes, signal display information, track circuit key relay status information, and signal circuit key relay status information; An in-station mapping relationship building module is used to establish a mutual mapping relationship between track circuit information codes, signal display information, track circuit key relay status information and signal circuit key relay status information within the target station range based on the pre-built mapping relationship library; A first comparison and verification module is used to collect real-time track circuit information codes and signal display information within the target station range, and perform a first comparison and verification on the mapping relationship between the collected real-time track circuit information codes and signal display information according to the established mutual mapping relationship between the track circuit information codes and signal display information within the target station range; A second comparison and verification module is used to collect real-time track circuit key relay status information and signal circuit key relay status information within the target station range, and perform a second comparison and verification on the mapping relationship between the collected track circuit key relay status information and the signal circuit key relay status information according to the established mutual mapping relationship between the track circuit key relay status information and the signal circuit key relay status information within the target station range; The output module is used to output normal information if the first comparison check and the second comparison check are both correct, and output abnormal alarm information otherwise.

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