Turnout disconnection monitoring method for electronic interlocking project

Abstract

The invention relates to the technical field of urban rail transit, and discloses a turnout disconnection monitoring method for an electronic interlocking project, which comprises the following steps: an electronic interlocking turnout execution unit is matched with an intelligent operation and maintenance monitoring extension set, and a turnout indication voltage acquisition module is arranged on a branching cabinet; the turnout indication voltage acquisition module is in a standby state when no turnout disconnection fault exists, and voltage acquisition is not carried out. According to the turnout disconnection monitoring method for the electronic interlocking project, intelligent linkage and logic judgment are carried out on the fault code of the electronic interlocking and the voltage analog quantity collected at the branching cabinet, whether the disconnection fault occurs indoors or outdoors is successfully distinguished, and a specific fault wire core can be indicated. According to the method, the problem that fault positioning is fuzzy in a traditional method and an existing electronic interlocking monitoring method is fundamentally solved, operation and maintenance personnel can straightly strike a fault point, the troubleshooting and repairing time is greatly shortened, and the influence on subway operation is reduced to the maximum extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urban rail transit, in particular to a turnout broken wire monitoring method for an electronic interlocking project. BACKGROUND

[0002] As a key device for switching tracks for metro trains, the reliability of turnout directly relates to the safety and operation efficiency of the entire metro system. Once a turnout broken wire fault occurs, the turnout will lose its gauge, causing train operation delay, and even triggering a chain of operational disruptions.

[0003] In the traditional relay interlocking system, the maintenance monitoring system is mainly relied on to monitor the turnout broken wire and outdoor diode short circuit. However, this method has significant defects: when a broken wire fault occurs, the monitoring system can only report the occurrence of the fault, but cannot accurately distinguish whether the fault point is located on the indoor device side or the outdoor turnout side. This ambiguous fault location causes the operation and maintenance personnel to have to investigate both indoor and outdoor lines, greatly increasing the difficulty and time of fault troubleshooting, and prolonging the equipment recovery period.

[0004] With the advancement of technology, electronic interlocking turnout execution units are gradually replacing traditional relay interlocking due to their small size, intelligence, and high integration. However, the existing turnout broken wire monitoring method for electronic interlocking projects still mostly refers to the ideas of traditional interlocking. Even due to changes in working principles, its monitoring range is actually smaller compared to traditional interlocking. The electronic interlocking turnout execution unit usually samples at its execution unit and can output fault codes indicating specific broken wire cores or diode short circuits. However, since the sampling point is located inside the indoor cabinet, relying solely on fault codes still cannot determine whether the broken wire occurred before the sampling point, i.e., indoors, or after the sampling point, i.e., outdoors, and has not fundamentally solved the problem of ambiguous fault location. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a turnout broken wire monitoring method for an electronic interlocking project, which solves the problems mentioned in the background.

[0006] The present application provides the following technical solution: a turnout broken wire monitoring method for an electronic interlocking project, comprising: an electronic interlocking turnout execution unit and an intelligent operation and maintenance monitoring extension, a turnout indication voltage acquisition module is provided on the distribution cabinet, the turnout indication voltage acquisition module is in standby state without voltage acquisition when there is no turnout broken wire fault, the method comprises the following steps: Step S1: a turnout broken wire fault occurs, and the ATS terminal alarms the specific turnout gauge loss; Step S2: the electronic interlocking turnout execution unit outputs a broken wire fault code to the intelligent operation and maintenance monitoring extension; Step S3, the intelligent operation and maintenance monitoring extension responds to the received disconnection fault code, and the intelligent operation and maintenance monitoring extension triggers the turnout representation voltage acquisition module to start acquisition; Step S4, the turnout representation voltage acquisition module sends the acquired voltage analog quantity to the intelligent operation and maintenance monitoring extension; Step S5, the intelligent operation and maintenance monitoring extension performs logical judgment according to the disconnection fault code and the voltage analog quantity, so as to distinguish whether the disconnection fault is indoor fault or outdoor fault; Step S6, the intelligent operation and maintenance terminal displays the disconnection fault of the specific line in the form of alarm.

[0007] Preferably, the disconnection fault code indicates the disconnection of the specific wire core or the short circuit fault of the diode.

[0008] Preferably, the disconnection fault code indicates the disconnection of the specific wire core, and the voltage analog quantity includes the interline voltage between the specific wire core and other multiple wire cores.

[0009] Preferably, the triggering of the turnout representation voltage acquisition module only occurs when the turnout is disconnected, and is controlled by the intelligent operation and maintenance monitoring extension.

[0010] Compared with the prior art, the present application has the following beneficial effects: The present application successfully distinguishes whether the disconnection fault occurs indoors or outdoors by intelligently linking the fault code of the electronic interlocking with the voltage analog quantity acquired at the branch cabinet and performing logical judgment, and can indicate the specific fault wire core. This fundamentally solves the pain point of the fuzzy fault positioning of the traditional method and the existing electronic interlocking monitoring method, enables the operation and maintenance personnel to directly rush to the fault point, greatly shortens the fault troubleshooting and repair time, and maximally reduces the influence on the subway operation. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The figure is a system architecture diagram of the present application; Figure 2 The figure is a flowchart of the present application. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0013] Please refer to Figures 1-2A method for monitoring turnout disconnection in an electronic interlocking project includes: an electronic interlocking turnout execution unit and an intelligent operation and maintenance monitoring sub-unit working together; a turnout indication voltage acquisition module is installed on the distribution cabinet; the turnout indication voltage acquisition module is in standby mode and does not perform voltage acquisition when there is no turnout disconnection fault; the method includes the following steps: Step S1: A turnout disconnection fault occurs, and the ATS terminal alarms to indicate that the specific turnout is out of service. Step S2: The electronic interlocking turnout execution unit outputs a disconnection fault code and sends it to the intelligent operation and maintenance monitoring sub-unit; Step S3: Upon receiving the disconnection fault code, the intelligent operation and maintenance monitoring unit triggers the turnout indication voltage acquisition module to start acquisition. Step S4: The turnout voltage acquisition module sends the acquired analog voltage to the intelligent operation and maintenance monitoring unit. Step S5: The intelligent operation and maintenance monitoring unit performs logical judgment based on the disconnection fault code and voltage analog quantity to distinguish whether the disconnection fault is an indoor fault or an outdoor fault. Step S6: The intelligent operation and maintenance terminal displays the specific line breakage fault indoor or outdoor through an alarm.

[0014] The open circuit fault code indicates a specific open circuit in a wire core or a short circuit in a diode.

[0015] The open circuit fault code indicates that a specific conductor is broken, and the analog voltage includes the inter-line voltage between the other conductors and the specific conductor.

[0016] The triggering of the turnout indicator voltage acquisition module only occurs when there is a turnout disconnection fault, and is controlled by the intelligent operation and maintenance monitoring sub-unit.

[0017] The core control device of the system is responsible for the driving and status monitoring of the turnout. Its turnout control execution unit is located in the indoor cabinet. When a turnout open circuit or diode short circuit fault is detected, it can generate and output a fault code indicating the specific faulty wire, such as X1, X2, ... For example, the specific fault truth value is represented by a hexadecimal value range of 0x00 to 0xFF.

[0018] The intelligent operation and maintenance monitoring unit, acting as the intelligent decision-making center, communicates with the electronic interlocking turnout execution unit and the turnout indication voltage acquisition module. It receives fault codes from the electronic interlocking system and possesses the ability to make logical judgments and send commands to the terminal. The turnout indication voltage acquisition module is a key additional module, installed in the distribution cabinet of the signal equipment room. Its acquisition point is located at the boundary between indoor and outdoor lines. Normally, this module is in a low-power standby state, not collecting or uploading data, and is only activated when it receives a trigger command from the intelligent operation and maintenance monitoring unit. The intelligent operation and maintenance terminal is a human-machine interface used to receive and ultimately display the fault diagnosis results and handling suggestions sent by the intelligent operation and maintenance monitoring unit. Please see Figure 2 In a specific embodiment, a fault in the X1 line of a ZDJ9 five-wire AC turnout is taken as an example: Fault Occurrence and Primary Alarm: During normal operation, if a turnout experiences a break in the line, a general alarm indicating that the turnout has lost its meter will first be displayed on the ATS terminal.

[0019] Fault code upload: When the electronic interlocking turnout execution unit detects a fault, it will immediately generate a corresponding disconnection fault code, such as a code indicating that the X1 line is disconnected, and upload the code to the intelligent operation and maintenance monitoring unit through the communication interface.

[0020] Triggering the acquisition module: After receiving the fault code, the intelligent operation and maintenance monitoring unit recognizes that precise positioning is required, and then sends a wake-up and acquisition command to the turnout voltage acquisition module installed in the distribution cabinet.

[0021] Analog voltage acquisition: When the turnout indication voltage acquisition module in standby mode is triggered, it immediately acquires the voltage of the turnout indication circuit, for example, the line voltage between X2 and X1, X3 and X1, X4 and X1, and X5 and X1, and uploads these analog voltage data to the intelligent operation and maintenance monitoring unit.

[0022] Intelligent logic judgment: The intelligent operation and maintenance monitoring unit simultaneously possesses two types of key information: qualitative information from the electronic interlock, "X1 line is broken," and quantitative information from the acquisition module, the voltage values ​​of each line to X1. The built-in logic judgment unit of the intelligent operation and maintenance monitoring unit performs a comprehensive analysis based on these two types of information: Scenario 1: Determined to be an indoor wiring break Condition: Fault code indicates X1 line is disconnected; When the X1 indoor line is disconnected, all line voltages reported by the acquisition module—X2 / X1, X3 / X1, X4 / X1, and X5 / X1—remain at 0V.

[0023] Logic: This indicates that the breakpoint is located after the acquisition point of the acquisition module, i.e., towards the indoor device side. This is because if the breakpoint were outdoors, the circuit formed by the outdoor diode and motor coil would cause the acquisition point to measure a pulse waveform.

[0024] Scenario 2: Determined to be an outdoor wire breakage Condition: Fault code indicates X1 line is disconnected; When the outdoor line of X1 is disconnected, the analog voltage reported by the acquisition module is a changing pulse waveform: X2 / X1, X3 / X1, X4 / X1, and X5 / X1 are all 100V~50V pulse waveforms.

[0025] Logic: This indicates that the breakpoint is located before the acquisition point of the acquisition module, i.e. towards the outdoor turnout side. At this time, since the indoor electronic interlocking execution unit is still outputting the voltage, the source of the voltage is 220VAC, which is processed by the internal circuit into a pulse waveform.

[0026] Results and Maintenance Guidance: After the intelligent maintenance monitoring unit completes its judgment, it sends the final diagnostic results, such as "XX turnout X1 line indoor disconnection fault" or "XX turnout X1 line outdoor disconnection fault" and corresponding troubleshooting suggestions to the intelligent maintenance terminal. Based on this accurate alarm, maintenance personnel can directly go to the indoor cabinet or outdoor turnout for troubleshooting, which greatly improves the efficiency of handling.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for monitoring turnout disconnection in an electronic interlocking project, characterized in that, The electronic interlocking turnout execution unit and the intelligent operation and maintenance monitoring sub-unit work together. The distribution cabinet is equipped with a turnout indication voltage acquisition module. When there is no turnout disconnection fault, the turnout indication voltage acquisition module is in standby mode and does not perform voltage acquisition. The method includes the following steps: Step S1: A turnout disconnection fault occurs, and the ATS terminal alarms to indicate that the specific turnout is out of service. Step S2: The electronic interlocking turnout execution unit outputs a disconnection fault code and sends it to the intelligent operation and maintenance monitoring sub-unit; Step S3: Upon receiving the disconnection fault code, the intelligent operation and maintenance monitoring unit triggers the turnout indication voltage acquisition module to start acquisition. Step S4: The turnout voltage acquisition module sends the acquired analog voltage to the intelligent operation and maintenance monitoring unit. Step S5: The intelligent operation and maintenance monitoring unit performs logical judgment based on the disconnection fault code and voltage analog quantity to distinguish whether the disconnection fault is an indoor fault or an outdoor fault. Step S6: The intelligent operation and maintenance terminal displays the specific line breakage fault indoor or outdoor through an alarm.

2. The method for monitoring turnout disconnection in an electronic interlocking project according to claim 1, characterized in that, The open circuit fault code indicates a specific open circuit in a wire core or a short circuit in a diode.

3. The method for monitoring turnout disconnection in an electronic interlocking project according to claim 2, characterized in that, The open circuit fault code indicates that a specific conductor is broken, and the analog voltage includes the inter-line voltage between the other conductors and the specific conductor.

4. The method for monitoring turnout disconnection in an electronic interlocking project according to claim 1, characterized in that, The triggering of the turnout indicator voltage acquisition module only occurs when there is a turnout disconnection fault, and is controlled by the intelligent operation and maintenance monitoring sub-unit.

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