An online monitoring switch failure diagnosis teaching platform

Abstract

The application provides an online monitoring switch machine fault diagnosis teaching platform, and belongs to the field of switch machine fault diagnosis teaching devices, which comprises a visual online system, a data transmission and reality module, a voltage acquisition module, a three-phase power supply circuit, a relay combination device, a switch machine control circuit, a current acquisition module, a data transmission and reality module, a PLC controller module, a PLC analog quantity module and an operation button and fault setting device. The application uses a cheap and small device to realize the function of fault positioning by collecting the current through the acquisition circuit, and the user can query the fault prompt through the mobile phone APP, which helps to check whether the fault range predicted and judged by the user according to the phenomenon is correct, improves the fault handling efficiency, is more convenient and fast compared with the expensive MSS system currently used by enterprises, is simple to assemble, can control the equipment through the mobile phone, and is easy for primary operators to learn. The key protection points of the application are the mobile phone APP system and the equipment composition structure.

Description

Technical Field

[0001] This invention relates to the field of teaching devices for switch machine fault diagnosis, and more particularly to a teaching platform for switch machine fault diagnosis that can be monitored online. Background Technology

[0002] The rail transit signaling system is the central core ensuring the safe operation of trains. Signaling systems involve numerous and expensive components. The three main trackside components—signals, track circuits, and switches—are fundamental equipment for ensuring normal train operation and are a key focus of rail transit education. Switches, in particular, are a vulnerable link in the train track; switch malfunctions directly affect the safe and orderly operation of trains. Therefore, training students to quickly and accurately troubleshoot switch malfunctions is a key aspect of rail transit education. Switch machines are signaling devices that ensure the correct operation of switches. Controlled by relay circuits, switch machines allow indoor control of outdoor switch operation, ensuring proper train route alignment.

[0003] Currently, the system used is the ATS system to operate the turnouts, and the MSS system is used to monitor the turnouts with a microcomputer. The power curve analysis helps signalmen troubleshoot the faults. However, the power curve analysis also requires the signalmen to have many years of experience. At the same time, the MSS system requires the acquisition module to be installed on the interlocking equipment, which is expensive. While using the MSS, the signalmen still need to manually check and repair fault points with tools, which is slow and inefficient. The training equipment is all actual equipment, which is expensive. The training space is limited, making it difficult to allow multiple people to practice and train at the same time.

[0004] Currently, the commonly used switch machines on rail transit lines mainly include the ZYJ7, ZDJ9, and S700K series, which employ a five-wire turnout control circuit. However, due to the bulky and heavy size of these switch machines, using the original equipment for training presents the following problems:

[0005] First, there is the issue of funding. Five-wire switch machines are expensive, and training programs can only equip one or two switch machines. Achieving simultaneous use of multiple machines would be costly.

[0006] Secondly, there is the issue of demonstration. Five-line switch machines are generally large and heavy, making them difficult to move around for demonstration. However, if they are demonstrated in groups, it will take up a lot of training time. At the same time, there is a situation where some students are observing and learning while others have nothing to do.

[0007] Third, troubleshoot inefficiencies and malfunctions. Summary of the Invention

[0008] The purpose of this invention is to provide an online monitoring teaching platform for switch machine fault diagnosis, which solves the technical problems of existing switch machine fault diagnosis teaching platforms being expensive, difficult to demonstrate, slow to troubleshoot, and unable to be remotely monitored in real time.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] An online monitoring teaching platform for switch machine fault diagnosis includes a visual online system, a data transmission and display module, a voltage acquisition module, a three-phase power supply circuit, a relay combination device, a switch machine control circuit, a current acquisition module, a data transmission and display module, a PLC controller module, a PLC analog quantity module, and operation buttons and a fault setting device. The three-phase power supply circuit is connected to the motor via the relay combination device, and the switch machine control circuit is connected to the relay combination device. The voltage acquisition module is located on the three-phase power supply circuit, and the current acquisition module is located on the switch machine control circuit. Both the current acquisition module and the voltage acquisition module are connected to the PLC analog quantity module. Both the PLC analog quantity module and the relay combination device are connected to the PLC controller module. The operation buttons and the fault setting device are connected to the PLC controller module. The PLC controller module is connected to the visual online system via the data transmission and display module.

[0011] Furthermore, by controlling the relay combination device through the PLC controller module to simulate the automatic switch structure inside the switch machine, the switch machine fault diagnosis teaching platform becomes smaller, cheaper, and more suitable for teaching.

[0012] Furthermore, the data transmission and visualization module is used to collect and realize video data of on-site troubleshooting in real time, and at the same time transmits the video data, fault point and troubleshooting result data to the visualization online system. The visualization online system stores the troubleshooting process data and outputs the troubleshooting result score.

[0013] Furthermore, the operation buttons and fault setting device are also connected wirelessly to a visual online system. Teachers can remotely control the operation buttons and fault setting device to set fault points through the visual online system, realize remote operation and fault setting, and then remotely view the results of students troubleshooting the fault, thus realizing online remote operation teaching.

[0014] Furthermore, the relay combination device includes four relays, namely KA1 relay, KA2 relay, KA3 relay and KA4 relay, and the PLC controller module is connected to control the KA1 relay, KA2 relay, KA3 relay and KA4 relay.

[0015] Furthermore, the KA1 relay is used to replace the first row of contacts 11-12, 13-14, and 15-16 of the automatic switch of the switch machine; the KA2 relay is used to replace the second row of contacts 21-22, 23-24, and 25-26 of the automatic switch of the switch machine; the KA3 relay is used to replace the third row of contacts 31-32, 33-34, and 35-36 of the automatic switch of the switch machine; and the KA4 relay is used to replace the fourth row of contacts 41-42, 43-44, and 45-46 of the automatic switch of the switch machine. Then, the PLC controller controls the KA1, KA2, KA3, and KA4 relays to simulate the closing and opening of the automatic switch of the switch machine.

[0016] Furthermore, the switch machine control circuit includes a first excitation circuit, a second excitation circuit, a pole-switching circuit, and a self-closing circuit. The current acquisition module includes several current sensors. Current sensors are respectively installed on the first excitation circuit, the second excitation circuit, the pole-switching circuit, and the self-closing circuit. The current sensors sense the magnitude of the current in the circuit to determine whether a fault has occurred in the circuit.

[0017] Furthermore, when setting fault points, the PLC controller module controls the KA1, KA2, KA3, and KA4 relays to set the corresponding fault points, then students troubleshoot the faults, and finally the system automatically displays whether the fault points match the students' troubleshooting results, thus completing the automatic troubleshooting training.

[0018] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0019] This invention utilizes an inexpensive and compact data acquisition module to locate faults by collecting circuit current. Users can check fault alerts via a mobile app, which helps verify the accuracy of their fault predictions and improves troubleshooting efficiency. Compared to the expensive MSS systems currently used by enterprises, this invention is more convenient and faster, simpler to assemble, and allows for mobile phone control, making it easy for novice operators to learn and use. The key protections of this invention are the mobile app system and the overall structure of the device. Attached Figure Description

[0020] Figure 1 This is a block diagram of the platform modules of the present invention;

[0021] Figure 2 This is a schematic diagram of the electric switch machine simulation device of the present invention;

[0022] Figure 3 This invention relates to the switch machine control motor circuit;

[0023] Figure 4 This invention relates to the existing switch machine control circuit;

[0024] Figure 5 This is a schematic diagram of the switch machine circuit control principle of the present invention;

[0025] Figure 6 This is a schematic diagram of the DC and AC circuits of the switch machine control motor circuit of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the present invention, and these aspects of the invention can be implemented even without these specific details.

[0027] like Figure 1 As shown, an online monitoring teaching platform for switch machine fault diagnosis includes a visual online system, a data transmission and display module, a voltage acquisition module, a three-phase power supply circuit, a relay combination device, a switch machine control circuit, a current acquisition module, a data transmission and display module, a PLC controller module, a PLC analog quantity module, and operation buttons and a fault setting device. The three-phase power supply circuit is connected to the motor via the relay combination device, and the switch machine control circuit is connected to the relay combination device. The voltage acquisition module is located on the three-phase power supply circuit, and the current acquisition module is located on the switch machine control circuit. Both the current acquisition module and the voltage acquisition module are connected to the PLC analog quantity module. Both the PLC analog quantity module and the relay combination device are connected to the PLC controller module. The operation buttons and the fault setting device are connected to the PLC controller module. The PLC controller module is connected to the visual online system via the data transmission and display module.

[0028] In this embodiment of the invention, a relay combination device controlled by a PLC controller module simulates the automatic switch structure inside the switch machine, making the switch machine fault diagnosis teaching platform smaller, cheaper, and more suitable for teaching.

[0029] In this embodiment of the invention, the data transmission and display module is used to collect and realize video data of on-site troubleshooting in real time, and at the same time transmit the video data, fault point and troubleshooting result data to the visualization online system. The visualization online system stores the troubleshooting process data and outputs the troubleshooting result score.

[0030] In this embodiment of the invention, the operation button and the fault setting device are also connected wirelessly to a visual online system. Teachers can remotely control the operation button and the fault setting device through the visual online system to set fault points, realize remote operation to set faults, and then remotely view the results of students troubleshooting the faults, thus realizing online remote operation teaching.

[0031] In embodiments of the present invention, such as Figure 2-5 As shown, the relay combination device includes four relays: KA1, KA2, KA3, and KA4. The PLC controller module is connected to each of these relays. KA1 relays replace the first row of contacts (11-12, 13-14, 15-16) of the automatic switch mechanism; KA2 relays replace the second row of contacts (21-22, 23-24, 25-26); KA3 relays replace the third row of contacts (31-32, 33-34, 35-36); and KA4 relays replace the fourth row of contacts (41-42, 43-44, 45-46). The PLC controller then controls the KA1, KA2, KA3, and KA4 relays to simulate the closing and opening of the automatic switch mechanism. The PLC controller module controls relays KA1, KA2, KA3, and KA4 to set corresponding fault points, then students troubleshoot the faults, and finally the system automatically displays whether the fault points match the students' troubleshooting results, thus completing the automatic troubleshooting training.

[0032] In embodiments of the present invention, such as Figure 2-3 As shown, the switch machine control circuit includes a first excitation circuit, a second excitation circuit, a pole-switching circuit, and a self-closing circuit. The current acquisition module includes several current sensors. Current sensors are respectively installed on the first excitation circuit, the second excitation circuit, the pole-switching circuit, and the self-closing circuit. The current sensors sense the magnitude of the current in the circuit to determine whether a fault has occurred in the circuit.

[0033] The magnitude of the switch machine's operating current reflects the working status of the switch machine's control circuit and its overall operating status during switching operations. When a fault occurs, the current in the relevant faulty circuit will fall below a certain value. Based on this principle, this platform uses an S7-200SMART PLC module, an EM06 analog signal acquisition module, an AC / DC current acquisition module, and a remote control module to detect circuit current conditions and diagnose faults in the control circuit of rail transit switch machines, achieving accurate fault diagnosis. The current acquisition for a five-wire switch machine is as follows... Figure 5 As shown, based on the working principle of a five-wire switch machine, current can be acquired from different circuits. For example, by connecting a DC current acquisition module in series from KZ to 1DQJ(1,2), BHJ, 1DQ, and finally KF, the operating current of the current circuit can be acquired. Similarly, current can be acquired from the corresponding circuit to be detected. The hardware wiring of the DC current acquisition module and the PLC acquisition section is as follows. Figure 5As shown, each current loop corresponds to one PLC analog signal channel. The working principle is as follows: For example, when relay 1DQJ fails, the current collected by the current acquisition module in the loop from KZ to 1DQJ(1,2), BHJ, 1DQJ, and finally to KF is very small. This current is collected by the PLC's analog signal module, and the program determines that this loop is faulty in the PLC acquisition and control system. Information is transmitted through the remote control module, and the fault is displayed on tablets and mobile terminals. Users can view the fault circuit prompts by clicking the fault reminder module in the APP, thereby improving fault diagnosis and inspection.

[0034] like Figure 5 and Figure 6 As shown, the circuit includes the excitation circuit of 1DQJ (full name: first turnout starting relay); the polarity switching circuit of 2DQJ (full name: second turnout starting relay); the excitation circuit of 1DQJF (full name: first turnout starting repeater relay); and the self-closing circuit of 1DQJ. This circuit is used to monitor whether the circuit is conducting and to realize the energizing of the 1DQJ relay, that is, the front contact is closed. When the three phases of the voltage in the circuit are normal, that is, the three phase voltage is not missing a phase, the BHJ of the 12-contact connected to DBQ will be energized to ensure the connection of the KZ-1DQJ-KF circuit. The remaining circuit is the turnout reverse position indication circuit, which includes AC circuit and DC circuit. The DC circuit is generated by the induced voltage generated by the energizing of the U and V phases of the three-phase motor.

[0035] Five-wire switch machines are expensive, but their mechanical parts can be modified based on their working principle. The automatic opening and closing device of a five-wire switch machine controls the machine by mechanically changing the position of the contacts. This training platform simulates the function of the automatic opening and closing device using a PLC and intermediate relays.

[0036] The specific design process is as follows: Figure 2 The automatic switch in the circuit has multiple sets of contacts, which connect and disconnect the circuit according to the control requirements of the switch machine. Through design modifications, the contacts of the automatic switch are mapped one-to-one with the contacts of the intermediate relays according to their contact groups. For example, contacts 11-12, 13-14, and 15-16 of the automatic switch group correspond to... Figure 2 The wiring diagram for the PLC and intermediate relays uses the contacts of relay KA1 as the intermediate relay for connection, and so on, to complete the connection of all four sets of contacts. Based on the control requirements of the switch machine, design the PLC control program, such as... Figure 2 As shown, for example, the output of control port 2 can be used to control the on / off state of relay KA3, thereby completing the connection and disconnection of 31-32, 33-34, and 35-36. Through this modification, the full functionality of the automatic switch can be achieved, with reliable performance.

[0037] After modification, the switch machine function can be realized by equipping it with the corresponding railway-specific relays, ordinary electrical relays and three-phase motors. The performance is reliable and the cost is greatly reduced.

[0038] Matters not covered in this invention are common knowledge.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A teaching platform for online monitoring of switch machine fault diagnosis, characterized in that: The system includes a visual online system, a data transmission and display module, a voltage acquisition module, a three-phase power supply circuit, a relay combination device, a switch machine control circuit, a current acquisition module, a data transmission and display module, a PLC controller module, a PLC analog quantity module, and operation buttons and a fault setting device. The three-phase power supply circuit is connected to the motor via the relay combination device, and the switch machine control circuit is connected to the relay combination device. The voltage acquisition module is located on the three-phase power supply circuit, and the current acquisition module is located on the switch machine control circuit. Both the current acquisition module and the voltage acquisition module are connected to the PLC analog quantity module. Both the PLC analog quantity module and the relay combination device are connected to the PLC controller module. The operation buttons and the fault setting device are connected to the PLC controller module, and the PLC controller module is connected to the visual online system via the data transmission and display module.

2. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 1, characterized in that: By using a PLC controller module to control a relay combination device to simulate the automatic switch structure inside the switch machine, the switch machine fault diagnosis teaching platform becomes smaller, cheaper, and more suitable for teaching.

3. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 1, characterized in that: The data transmission and visualization module is used to collect and realize video data of on-site troubleshooting in real time. At the same time, it transmits video data, fault points and troubleshooting results data to the visualization online system. The visualization online system stores the troubleshooting process data and outputs the troubleshooting result score.

4. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 1, characterized in that: The operation buttons and fault setting device are also connected wirelessly to a visual online system. Teachers can remotely control the operation buttons and fault setting device to set fault points through the visual online system, realize remote operation and fault setting, and then remotely view the results of students troubleshooting the fault, thus realizing online remote operation teaching.

5. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 1, characterized in that: The relay combination device includes four relays: KA1, KA2, KA3, and KA4. The PLC controller module is connected to each of the KA1, KA2, KA3, and KA4 relays.

6. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 5, characterized in that: The KA1 relay is used to replace the first row of contacts 11-12, 13-14, and 15-16 of the automatic switch mechanism; the KA2 relay is used to replace the second row of contacts 21-22, 23-24, and 25-26 of the automatic switch mechanism; the KA3 relay is used to replace the third row of contacts 31-32, 33-34, and 35-36 of the automatic switch mechanism; and the KA4 relay is used to replace the fourth row of contacts 41-42, 43-44, and 45-46 of the automatic switch mechanism. Then, the PLC controller controls the KA1, KA2, KA3, and KA4 relays to simulate the closing and opening of the automatic switch mechanism.

7. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 1, characterized in that: The switch machine control circuit includes a first excitation circuit, a second excitation circuit, a pole-switching circuit, and a self-closing circuit. The current acquisition module includes several current sensors. Current sensors are respectively installed on the first excitation circuit, the second excitation circuit, the pole-switching circuit, and the self-closing circuit. The current sensors sense the magnitude of the current in the circuit to determine whether a fault has occurred in the circuit.

8. The online monitoring-enabled switch machine fault diagnosis teaching platform according to claim 5, characterized in that: When setting fault points, the PLC controller module controls the KA1, KA2, KA3 and KA4 relays to set the corresponding fault points, then students troubleshoot the faults, and finally the system automatically displays whether the fault points match the students' troubleshooting results, thus completing the automatic troubleshooting training.

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