Switch machine fault simulation system and troubleshooting training method

Abstract

The invention relates to a switch machine fault simulation system and a troubleshooting training method, and the system comprises a judgment console, a monitoring terminal, a control cabinet and one or more switch machines which are connected in sequence. A fault point is arranged in a circuit of the point switch; the types of the fault points comprise indoor indication open circuit, outdoor indication open circuit, control circuit open circuit, protection and starting open circuit and drive acquisition circuit open circuit; the judgment console issues fault point information to the monitoring terminal, the monitoring terminal controls one fault point in the circuit of the point switch to be disconnected through the control cabinet, and the monitoring terminal displays alarm prompt information and the operation state of the point switch. Compared with the prior art, the system has the advantages that faults occurring on site can be simulated, and the switch machine troubleshooting capability of trainees is improved; the set fault points cover the core function area of the switch machine, and simulation is accurate; and the monitoring terminal displays the alarm prompt information and the operation state of the switch machine, so that the state of the switch machine can be judged.

Description

Technical Field

[0001] This invention relates to rail transit, and more particularly to a method for improving the troubleshooting capabilities of trainees for switch machines. Background Technology

[0002] Urban rail transit trainers face numerous challenges when troubleshooting switch machine malfunctions. The malfunctions are complex, difficult to diagnose, and rely heavily on manual experience for troubleshooting. The maintenance model is gradually shifting from factory repair to in-house repair. Fault handling must adhere to the principle of "clearing before restoring," and there are differences in employee skill levels, with some lacking the ability to quickly locate complex circuits. Furthermore, actual switch machines are expensive and cannot be fault-injected. Switch machine malfunctions directly affect turnout switching, potentially leading to train delays or even collisions. Improving the ability to quickly handle malfunctions can reduce the impact on train operations and ensure operational safety and efficiency.

[0003] A search revealed that application publication number CN104504955A discloses a simulated switch machine for railway speed-up turnouts. Specifically, it discloses an indoor circuit and an outdoor switch machine circuit. The indoor circuit includes a main combination relay, which connects external A, B, and C three-phase power supplies to output terminals X1, X2, X3, X4, and X5 through the opening and closing of its contact group. The indoor circuit is connected to the switch machine circuit via output terminals X1, X2, X3, X4, and X5. The indoor circuit is designed to be consistent with the actual circuit. The switch machine circuit includes a rectifier box, a turnout relay DJ, a time relay TJ, and a three-phase load for simulating the switch machine motor. However, this prior art, by connecting external A, B, and C three-phase power supplies to output terminals X1, X2, X3, X4, and X5 to simulate multi-point phase loss, breakpoint, and phase reversal faults, differs somewhat from the actual switch machine circuit.

[0004] Application publication number CN108182844A discloses an assessment device and method for comprehensive training of switch machine control turnouts. Specifically, the device includes a host computer and a slave computer, which are interconnected, and the slave computer is interconnected with the switch machine. The slave computer includes an STM32 microprocessor, relay circuits for setting multiple switch machine fault points, and a switch machine welding measurement continuity circuit. The host computer includes a switch machine fault finding and handling module, a switch machine wiring welding continuity measurement module, and a comprehensive theoretical knowledge assessment module. The method includes switch machine fault finding and handling content, switch machine wiring welding continuity measurement content, and comprehensive theoretical knowledge assessment content. However, this prior art cannot determine the status of the switch machine.

[0005] In summary, the technical problem that needs to be solved is how to design a fault simulation system and troubleshooting training method that can accurately simulate switch machine faults and judge the status of switch machines. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology, which is unable to accurately simulate the switch machine circuit to achieve fault simulation and is unable to judge the switch machine, and to provide a switch machine fault simulation system and troubleshooting training method.

[0007] The objective of this invention can be achieved through the following technical solutions.

[0008] According to one aspect of the present invention, a switch machine fault simulation system is provided, comprising a referee control console, a monitoring terminal, a control cabinet, and a switch machine connected in sequence, wherein there are one or more switch machines; the circuit of the switch machine is provided with a fault point; the types of the fault point include: indoor indication open circuit, outdoor indication open circuit, control circuit open circuit, protection and start-up open circuit, and drive acquisition circuit open circuit; The referee control console sends fault information to the monitoring terminal. The monitoring terminal controls the circuit of the switch machine to disconnect the fault point through the control cabinet, and displays alarm prompts and the operating status of the switch machine.

[0009] As a preferred technical solution, after the referee control console issues fault point information, the monitoring terminal also displays the circuit diagram of the switch machine, on which the locations of all fault points set in the circuit are marked; there are a total of 130 fault points.

[0010] As a preferred technical solution, the circuit of the switch machine includes a relay installed at the location of the fault point; the control cabinet receives instructions from the monitoring terminal, controls the on / off state of the relay, and simultaneously sends the switch machine operating parameters to the monitoring terminal.

[0011] As a preferred technical solution, the locations for setting the fault points of the indoor open circuit indication include: between two reverse position indication relays, between two position indication relays, between two time relays, between a reverse position indication relay and a time relay, between a position indication relay and a time relay, between a reverse position indication relay and the repeating relay of a turnout starting relay, between a position indication relay and the repeating relay of a turnout starting relay, between the repeating relay of a turnout starting relay and a double-action turnout starting relay, between the repeating relay of a turnout starting relay and a turnout starting relay, between the relay contact group and a time relay, between the relay contact group and a resistor, between a double-action turnout starting relay and a position indication relay, between a double-action turnout starting relay and a reverse position indication relay, between a resistor and a double-action fork starting relay, between a double-action turnout starting relay and a time relay, between a time relay and a fuse relay, between the relay contact group and a turnout starting relay, between a turnout starting relay and a double-action turnout starting relay, between a fuse and a relay contact group, between a turnout starting relay and a time relay, and between a time relay and the positive terminal of the control power supply.

[0012] As a preferred technical solution, the locations of the outdoor open-circuit fault points include: between two combination terminals, between two stationary contacts, between a connector contact and a combination terminal, between a fuse and a combination terminal, between a connector contact and a stationary contact, between a device terminal and a connector contact, between a combination terminal and a diode, and between a combination terminal and a resistor.

[0013] As a preferred technical solution, the locations for setting the fault point of the open circuit in the control circuit include: between two relays, between two double-action turnout starting relays, between the repeating relays of two turnout starting relays, between the repeating relay of the turnout starting relay and the double-action turnout starting relay, between the repeating relay of the turnout starting relay and the turnout starting relay, between the double-action turnout starting relay and the time relay, between the turnout starting relay and the double-action turnout starting relay, between the turnout starting relay and the time relay, between the positive terminal of the control power supply and the time relay, between the positive terminal of the control power supply and the repeating relay of the turnout starting relay, between the turnout starting relay and the negative terminal of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative terminal of the control power supply, between the time relay and the turnout operating relay, between the turnout operating relay and the negative terminal of the control power supply, between the protection relay and the repeating relay of the turnout starting relay, and between the repeating relay of the turnout starting relay and the protection relay.

[0014] As a preferred technical solution, the location of the fault point for the protection and start-up open circuit includes: between two protection relays, between a protection relay and a time relay, between a time relay and a fuse, between a turnout start relay and a time relay, between a phase loss protector and the repeater relay of the turnout start relay, between a fuse and a phase loss protector, between a phase loss protector and a protection relay, between a phase loss protector and a turnout start relay, between a resistor-capacitor box and a turnout start relay, and between a resistor-capacitor box and a resistor. The locations where the open circuit fault point of the drive acquisition circuit is set include: the time relay side, the turnout control relay side, and the auxiliary relay side.

[0015] According to another aspect of the present invention, a troubleshooting training method using a switch machine fault simulation system is provided, specifically including the following steps: Step S1: The fault point in the circuit controlling the switch machine of the switch machine fault simulation system is disconnected, and the monitoring terminal displays an alarm message at the same time. Step S2: Trainees locate and repair the fault based on the alarm prompts and submit the repaired fault information to the referee control console. In step S3, the referee control console compares the repaired fault point information with the fault point disconnected in step S1. If they are the same, the operation is deemed correct and the alarm message is turned off; otherwise, the operation is deemed incorrect and the alarm message is continuously displayed.

[0016] As a preferred technical solution, in step S1, the method for selecting the fault point is as follows: the referee specifies the disconnected fault point on the referee console or the referee console randomly selects the fault point; the number of fault points is one or more.

[0017] As a preferred technical solution, step S2 specifically involves: the trainee viewing the alarm prompts and switch machine status on the monitoring terminal, using detection tools to detect the data, identifying the fault point, restoring the switch machine function using a temporary cable, opening the switch machine circuit diagram on the monitoring terminal, selecting the fault point to be repaired, and submitting the request.

[0018] Compared with the prior art, the present invention has the following beneficial effects.

[0019] 1) This invention establishes five types of fault points: indoor indicator open circuit, outdoor indicator open circuit, control circuit open circuit, protection and start-up open circuit, and drive acquisition circuit open circuit. This covers the core functional areas of the switch machine, ensuring that any fault can be included in the monitoring and control scope. The simulation is accurate, and trainees can become familiar with various faults after training with this simulation system. The monitoring terminal displays alarm prompts and the switch machine's operating status, enabling judgment of the switch machine's condition. Faults can be injected into the switch machine through the designated fault points, simulating faults that have occurred in the field, thus improving the troubleshooting capabilities of trainees.

[0020] 2) The monitoring terminal of this invention can display the circuit diagram of the switch machine, making it easier for trainees to observe and select fault points for repair, and facilitating feedback during training. Fault points are simulated via relays, and the control cabinet controls their on / off states, making the process convenient and quick.

[0021] 3) This invention sets fault points between devices such as relays that operate at high frequencies or are easily damaged by vibration, terminals and contacts that are easily loosened, relays that are easily burned by large currents, and relays that are prone to aging after long service life. This conforms to the actual operation of switch machines, can accurately simulate operational faults, and facilitates training personnel to conduct effective training on actual faults.

[0022] 4) This invention can assess contestants' understanding of the switch machine control circuit, starting circuit, and indication circuit, as well as their troubleshooting ability, and whether trainees can eliminate all faults. By setting different numbers of fault points, the assessment's differentiation is increased. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the structure of a switch machine fault simulation system according to the present invention.

[0024] Figure 2 This is a message flow diagram of a switch machine fault simulation system according to the present invention.

[0025] Figure 3 This is a diagram showing the first fault point setting of the present invention.

[0026] Figure 4 This is a diagram showing the second fault point setting of the present invention.

[0027] Figure 5 This is a diagram showing the third fault point setting of the present invention.

[0028] Figure 6 This is a diagram showing the fourth fault point setting of the present invention.

[0029] Figure 7 This is a flowchart of a troubleshooting training method according to the present invention.

[0030] The numbers in the diagram are as follows: 1. Referee control console; 2. Monitoring terminal; 3. Control cabinet; 4. Switch machine; 41. First switch machine; 42. Second switch machine. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] Example 1 like Figure 1 As shown, the present invention provides a switch machine 4 fault simulation system, comprising a referee control console 1, a monitoring terminal 2, a control cabinet 3, and a switch machine 4 connected in sequence, wherein there are one or more switch machines 4. Figure 1 Two are shown. The switch machine 4 of this invention can inject faults through the set fault points, which can simulate faults that have occurred on site and improve the troubleshooting ability of the switch machine 4 for trainees.

[0033] The referee console 1 supports inputting a specified fault point, or the program can randomly select a fault point. It can also judge the fault points submitted by the trainees, determine whether the trainees have completely repaired the fault of switch machine 4, and convert the result into a score according to the rules.

[0034] Monitoring terminal 2 can display the operating status of switch machine 4 and view the turnout curve. When switch machine 4 malfunctions, it can generate an alarm for training personnel to review. In addition, monitoring terminal 2 can also display the circuit diagram of switch machine 4, allowing training personnel to select the fault point to repair on the circuit diagram.

[0035] Control cabinet 3 can drive and collect data on switch machine 4. On the one hand, it receives instructions from monitoring terminal 2 to drive changes in the state of switch machine 4; on the other hand, it sends the operating parameters of switch machine 4 to monitoring terminal 2. In addition, control cabinet 3 has an extra function that can control the connection or disconnection of fault points in the circuit of switch machine 4.

[0036] The switch machine 4 is similar to the real switch machine 4 in structure and circuitry. The difference is that miniature relays are added to the indoor and outdoor circuits of the switch machine 4 as fault points. These miniature relays can be switched on and off by the control cabinet 3, thereby injecting faults into the switch machine 4.

[0037] The fault points of the switch machine 4 are divided into five categories: open circuit in indoor display, open circuit in outdoor display, open circuit in control circuit, open circuit in protection and start-up circuit, and open circuit in drive acquisition circuit. Classifying the fault point types clarifies the functional links, narrows the troubleshooting scope, improves troubleshooting efficiency, and avoids delays caused by unclear fault scope. A total of 130 fault points are identified. The switch machine 4 circuit includes indoor equipment, outdoor equipment, and connecting wiring. These five categories of fault points cover the core functional links and functional areas of the switch machine 4 circuit, achieving full-link, full-scenario failure risk coverage, precise location, and safety management. The indoor indicator open circuit is due to the reliance on high-frequency operating contacts in this section of the circuit, which are prone to open circuits due to electrical wear. Fault points include scenarios such as loose indoor relay contacts and loss of position indication due to loose terminal blocks. The outdoor indicator open circuit is due to the susceptibility of this section of the circuit to environmental influences and mechanical vibrations. Fault points include outdoor cable breaks and status feedback interruptions caused by turnout indicator component failures. The control circuit open circuit is due to the susceptibility of this section of the circuit to failure due to heat loss and load impacts caused by carrying large currents. Fault points include the inability to transmit control commands. The protection and start-up open circuit is due to the susceptibility of components in this section of the circuit to aging due to long service life and the need for precise operation. Fault points include equipment failure to start (start relay de-energization) and protection failure (overload failure to cut off). The drive acquisition circuit open circuit is due to the power loss of the drive module and the susceptibility of weak signal transmission in the acquisition circuit. Fault points include the inability to issue drive commands, the inability to receive equipment status, and the breakage of closed-loop control.

[0038] Fault location information such as Figure 3 , Figure 4 , Figure 5 , Figure 6As shown in Tables 1-5, the specific location information of the fault points is listed, and the full names of the device abbreviations in Tables 1-5 are listed in Table 6.

[0039] Table 1. Indoor Open Circuit Fault Location Information Table Table 2. Outdoor Open Circuit Fault Location Information Table Table 3. Location information of open circuit faults in the control circuit Table 4. Location Information of Protection and Start-up Open Circuit Fault Points Table 5. Location information of open circuit faults in the drive acquisition circuit. Table 6. Comparison of Device Abbreviations and Full Names During practice, the referee console 1 specifies the fault point to be controlled, or randomly selects a fault point, and sends it to the monitoring terminal 2. The monitoring terminal 2 controls the fault point in the circuit of the switch machine 4 to disconnect through the control cabinet 3, thereby putting the switch machine 4 in a fault state so that the trainees can troubleshoot it.

[0040] Example 2 like Figure 2 and Figure 7 As shown, the present invention provides a troubleshooting training method using the fault simulation system of switch machine 4 in Embodiment 1, as detailed below.

[0041] The referee inputs a specified fault point on the referee console 1, or the referee console 1 randomly selects a fault point. After the fault point is selected, it is sent to the monitoring terminal 2, which forwards it to the control cabinet 3. The control cabinet 3 then converts the information into an electrical signal, disconnecting the fault point in the circuit of the switch machine 4, thus putting the switch machine 4 in a fault state. At the same time, an alarm prompt for the switch machine 4 fault will appear on the monitoring terminal 2. The trainee views the alarm content and the status of the switch machine 4 on the monitoring terminal 2, and uses testing tools such as a multimeter and oscilloscope to measure parameters such as voltage, current, and resistance to locate and repair the fault, and restore the function of the switch machine 4 using a temporary cable. Afterwards, on the monitoring terminal 2, the trainee opens the circuit diagram of the switch machine 4, selects the fault point to be repaired, and submits it. The referee console 1 compares the fault point submitted by the trainee with the initially selected fault point to determine whether the trainee has completely repaired the fault of the switch machine 4. If they are the same, the operation is considered correct, and the alarm prompt is turned off; otherwise, the operation is considered incorrect, and the alarm prompt continues to be displayed.

[0042] This invention can assess trainees' understanding of the switch machine's control circuit, starting circuit, and indication circuit, as well as their troubleshooting abilities, and whether they can eliminate all faults. By setting different numbers of fault points, the assessment's discriminatory power is increased.

[0043] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A point machine (4) failure simulation system characterized by, It comprises a judge control console (1), a monitoring terminal (2), a control cabinet (3) and a switch machine (4) connected in sequence, the switch machine (4) is one or more; the circuit of the switch machine (4) is provided with a fault point; the types of the fault point include indoor indicating open circuit, outdoor indicating open circuit, control circuit open circuit, protection and starting open circuit and driving collection circuit open circuit; The judge control console (1) issues fault point information to the monitoring terminal (2), the monitoring terminal (2) controls the fault point of one of the circuits of the switch machine (4) to be disconnected through the control cabinet (3), and the monitoring terminal (2) displays alarm prompt information and the running state of the switch machine (4).

2. A switch machine (4) malfunction simulation system according to claim 1, characterized in that, After the judge control console (1) issues the fault point information, the monitoring terminal (2) also displays the circuit diagram of the switch machine (4), and all the positions of the fault points provided in the circuit are marked on the circuit diagram; the fault points are 130 in total.

3. The switch machine (4) failure simulation system of claim 1, wherein, The position of the fault point provided in the circuit of the switch machine (4) is installed with a relay; the control cabinet (3) receives the instruction of the monitoring terminal (2), controls the on-off of the relay, and sends the running parameters of the switch machine (4) to the monitoring terminal (2).

4. The switch machine (4) failure simulation system of claim 1, wherein, The positions of the fault points of the indoor indicating open circuit include between two reverse indicating relays, between two positioning indicating relays, between two time relays, between the reverse indicating relay and the time relay, between the positioning indicating relay and the time relay, between the reverse indicating relay and the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of the relay of 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The switch machine (4) failure simulation system of claim 1, wherein, ​ 6. The switch machine (4) failure simulation system of claim 1, wherein, The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay.

7. The switch machine (4) failure simulation system of claim 1, wherein, The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay. The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay.

8. A troubleshooting training method using the failure simulation system of the switch machine (4) according to any one of claims 1 to 7, characterized by, The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay. The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay. The position of the open-circuit fault point of the control circuit includes: between the two relays, between the two double-acting switch starting relays, between the two switch starting relays, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the two switch starting relays and the double-acting switch starting relay, between the two switch starting relays and the time relay, between the positive pole of the control power supply and the time relay, between the positive pole of the control power supply and the relay of the switch starting relay, between the switch starting relay and the negative pole of the control power supply, between the time relay and the auxiliary relay, between the auxiliary relay and the negative pole of the control power supply, between the time relay and the switch operating relay, between the switch operating relay and the negative pole of the control power supply, between the protection relay and the relay of the switch starting relay, and between the relay of the switch starting relay and the protection relay. ​ 9. The troubleshooting training method of claim 8, wherein, ​ 10. The troubleshooting training method of claim 8, wherein, ​

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