A platform screen door system fault detection and analysis device and method

Abstract

The present invention discloses a platform screen door system fault detection and analysis device and method, which relates to the technical field of platform screen door system faults, aiming to solve the problem that the existing technical solutions mainly rely on manual detection and analysis of the operating state of equipment. A subway platform screen door unit controller and a door control unit are provided. The subway platform screen door unit controller and the door control unit communicate through CAN. The door control unit controls the platform screen door. Then, a microprocessing unit, a voltage detection circuit, a counter, a power supply circuit, a touch display screen, a detection device, a SIG door opening and closing simulation circuit, a remote communication module, a remote server, and an automatic time synchronization module are set. The power supply circuit, the touch screen display circuit, the detection device, the SIG door opening and closing simulation circuit, the voltage detection circuit, and the remote communication module are connected to the microprocessing unit. The detection device is connected to the subway platform screen door unit controller through a communication interface wiring, and a USB interface is provided to reduce the human resource consumption for the platform screen door system fault detection and analysis.

Description

Technical Field

[0001] The present invention relates to the technical field of platform screen door system failures, and specifically refers to a platform screen door system failure detection and analysis device and method thereof. Background Art

[0002] The platform screen door system is installed at the edge of the platform of urban rail transit stations along the line, isolating the platform waiting area from the track running area, corresponding to the train doors, and is an electromechanical equipment system. The application of the platform screen door isolates passengers from the tracks and trains, improves the operation safety factor, improves the platform environment for passengers waiting, and is also conducive to saving operation costs and construction costs. The opening and closing of the platform screen door generally cooperate with the actions of the train doors when the train arrives at the station, providing a passage for passengers to get on and off the train.

[0003] In the implementation process, the inventor found that during the one-million-time function test of the platform screen door system prototype, 5000 times of on-site stability tests, and the handling of occasional failures, the existing technical solutions mainly rely on manual detection and analysis of the equipment operation status. The whole process consumes a large amount of human resources and the effect is not ideal, lacking an efficient detection and analysis means.

[0004] In view of this, it is very necessary to provide an efficient platform screen door system failure detection and analysis system for the above technical problems. Summary of the Invention

[0005] The present invention discloses a platform screen door system failure detection and analysis device and method thereof, aiming to provide an efficient platform screen door system failure detection and analysis system, which is very necessary.

[0006] To solve its technical problems, the present invention sets the following technical solutions:

[0007] A platform screen door system failure detection and analysis device includes a subway platform screen door unit controller, a door control unit for controlling the platform screen door, a microprocessing unit, a remote server, a counter, a power supply circuit, a touch display screen, a detection device for communication detection, a SIG switch door simulation circuit for sending switch door instructions, an automatic time synchronization module, a voltage detection circuit for interface voltage detection, and a remote communication module, and there is also a voltage detection circuit for interface voltage detection; the subway platform screen door unit controller and the door control unit are connected by CAN communication, and the door control unit is directly connected to the platform screen door; the power supply circuit, the touch display screen, the detection device, the SIG switch door simulation circuit, the automatic time synchronization module, the voltage detection circuit, and the remote communication module are connected to the microprocessing unit; the detection device is connected to the communication output end of the subway platform screen door unit controller through a communication interface wiring, and the communication receiving end of the subway platform screen door unit controller is connected to the SIG switch door simulation module; the remote communication module is connected to the remote server.

[0008] Preferably, the SIG door opening / closing simulation circuit includes two loops with the same structure. The instruction output ends of two microprocessing units are respectively connected to one ends of a first resistor and a second resistor. The other ends of the first resistor and the second resistor are respectively connected to the bases of a first PNP triode and a second PNP triode. Their collectors are both grounded, and their emitters are respectively connected to a first control relay and a second control relay. A first diode and a second diode are respectively connected in parallel with the first control relay and the second control relay. One contact switch of each of the first control relay and the second control relay is respectively connected to the feedback input end of the microprocessing unit through a third resistor and a fourth resistor. The other two contact switches of each of the first control relay and the second control relay are both connected to the +24V and -24V power supplies at one ends respectively, and the other ends are respectively connected to both ends of a first subway platform door unit controller relay and a second subway platform door unit controller relay.

[0009] Preferably, the voltage detection circuit includes at least 4 paths. The voltage to be measured is connected to one end of a voltage isolation sensor. The other end of the voltage isolation sensor is successively connected in series with a fifth resistor, a sixth resistor and a seventh resistor. The seventh resistor is grounded. Both ends of the sixth resistor are connected to the input end of a differential amplifier. The output end of the differential amplifier is connected to the microprocessing unit.

[0010] Preferably, the system also has a USB interface supporting mouse and program upgrade. The communication interface has two specifications: RS232 and RS485.

[0011] Preferably, the counter is a 7-bit counter.

[0012] In addition, the present application also provides a method for detecting and analyzing faults of a platform door system, which is applied to a device for detecting and analyzing faults of a platform door system proposed in the present application, and has the following steps:

[0013] (a) Connect the counter, power supply circuit, touch display screen, detection device, SIG door opening / closing simulation circuit, automatic time synchronization module, voltage detection circuit and remote communication module to the microprocessing unit. Connect the detection device to the communication output end of the subway platform door unit controller through a communication interface wire. Connect the communication input end of the subway platform door unit controller to the SIG door opening / closing simulation module. Connect the subway platform door unit controller to the door control unit through CAN, and connect to control the platform door through the door control unit;

[0014] (b) Set the initial value of the counter data to zero, and automatically set two counter thresholds through mode selection, which are a first preset threshold and a second preset threshold slightly higher than the first preset threshold respectively;

[0015] (c) Select the mode through the touch display screen and click start;

[0016] (d) The SIG door opening / closing simulation circuit issues automatic door opening / closing instructions according to the frequency;

[0017] (e) The detection device reads and analyzes the output data of the subway platform door unit controller through the communication interface. The output of the subway platform door unit controller reflects the communication data of the internal relay logic control and the safety loop status transmitted back by the door control unit;

[0018] (f) If a fault occurs in the communication data or safety loop status read in step (e), the door opening / closing operation is automatically stopped, and the fault data is uploaded to the remote server by the remote communication module. After the fault is eliminated, it returns to step (d);

[0019] (g) If the data read in step (e) is normal, the counter data is incremented by 1;

[0020] (h) Detect whether the counter data reaches the first preset threshold;

[0021] If the detection result in step (h) is yes, it indicates that the test is about to be completed, and the information that the sending device is about to complete the test is sent, and then step (g) is executed; if the detection result in step (h) is no, step (i) is performed;

[0022] (i) Detect whether the counter data reaches the second preset threshold;

[0023] If the detection result in step (i) is no, return to step (d); if the detection result in step (i) is yes, the door opening / closing action is prohibited and the information that the sending device has completed the test is sent.

[0024] Preferably, an optocoupler is provided for the SIG door opening / closing simulation circuit and the relay of the subway platform door unit controller of the platform door system, and an isolation voltage detection module is provided for the detection device, which includes at least 4 voltage detection circuits.

[0025] Preferably, the SIG door opening / closing simulation circuit includes two loops with the same structure. The instruction output ends of two microprocessing units are respectively connected to one ends of a first resistor and a second resistor. The other ends of the first resistor and the second resistor are respectively connected to the bases of a first PNP triode and a second PNP triode. Their collectors are both grounded, and their emitters are respectively connected to a first control relay and a second control relay. A first diode and a second diode are respectively connected in parallel with the first control relay and the second control relay. One contact switch of each of the first control relay and the second control relay is respectively connected to the feedback input end of the microprocessing unit through a third resistor and a fourth resistor. The other two contact switches of each of the first control relay and the second control relay are respectively connected to the +24V and -24V power supplies at one end, and the other ends are respectively connected to both ends of the first subway platform door unit controller relay and the second subway platform door unit controller relay.

[0026] Preferably, the voltage detection circuit includes at least 4 paths. The voltage to be measured is connected to one end of a voltage isolation sensor. The other end of the voltage isolation sensor is successively connected in series with a fifth resistor, a sixth resistor, and a seventh resistor. The seventh resistor is grounded, and both ends of the sixth resistor are connected to the input end of a differential amplifier. The output end of the differential amplifier is connected to the microprocessing unit.

[0027] Preferably, the system also has a USB interface that supports mouse and program upgrade. The communication interface has two specifications: RS232 and RS485.

[0028] Preferably, the counter is a 7-bit counter.

[0029] This application has the following beneficial effects:

[0030] By using the control device and communication system to detect and analyze the operating state of the device, the consumption of human resources is reduced, and the efficiency of detection and analysis is improved; by using the touch screen to select the corresponding function by clicking or using a mouse, function switching is realized, and the operation difficulty of the system is reduced; by selecting the working mode through the touch screen and combining different functions of the system, it can be applied to various occasions and has high usability. Description of the Drawings

[0031] Figure 1 It is the structure diagram of the system of this application;

[0032] Figure 2 It is the working flow chart of this application;

[0033] Figure 3 It is the control schematic diagram of the SIG switch door simulation circuit of this application;

[0034] Figure 4 It is the voltage detection schematic diagram of this application;

[0035] Among them, 1 - microprocessing unit, 2 - counter, 3 - touch display screen, 4 - power supply circuit, 5 - SIG switch door simulation circuit, 6 - detection device, 7 - remote communication module, 8 - remote server, 9 - subway platform door unit controller, 10 - door control unit, 11 - platform door, 12 - automatic time synchronization module, 13 - first control relay, 14 - second control relay, 15 - first subway platform door unit controller relay, 16 - second subway platform door unit controller relay, 17 - voltage isolation sensor, 18 - differential amplifier, 19 - voltage detection circuit, R1 - first resistor, R2 - second resistor, R3 - third resistor, R4 - fourth resistor, R5 - fifth resistor, R6 - sixth resistor, R7 - seventh resistor, D1 - first diode, D2 - second diode, Q1 - first PNP transistor, Q2 - second PNP transistor. Detailed implementation mode

[0036] Embodiment 1

[0037] As Figure 1 A platform screen door system fault detection and analysis device as shown, a platform screen door system fault detection and analysis device, including a subway platform screen door unit controller 9 and a door control unit 10. The subway platform screen door unit controller 9 and the door control unit 10 are connected by CAN communication. The door control unit 10 is directly connected to the platform screen door 11. It also includes a microprocessing unit 1, a remote server 8, a counter 2, a power supply circuit 4, a touch display screen 3, a detection device 6, a SIG door opening and closing simulation circuit 5, an automatic time synchronization module 12, a remote communication module 7, and a voltage detection circuit 19 for interface voltage detection.

[0038] The power supply circuit 4 is a conventional circuit in this field, responsible for converting the DC110V drive power of the platform screen door system into the voltage required for the system to work; the touch display screen 3 is used for function selection and information display; the detection device 6 is used for communication detection; the SIG door opening and closing simulation circuit 5 simulates the SIG door opening and closing instructions issued by the on-site signal system; the remote communication module 7 is used to upload data to the remote server 8; the automatic time synchronization module 12 is used to automatically synchronize time with the server regularly to ensure the accuracy of the device time. After the SIG door opening and closing simulation circuit 5 issues a door opening and closing instruction, the subway platform screen door unit controller 9 makes a logical judgment on the data validity and priority, and then issues a door opening and closing instruction. After receiving the door opening and closing instruction, the door control unit 10 controls the platform screen door 11 to open and close according to the instruction content. When the platform screen door opens, the safety circuit is disconnected, and when it closes, the safety circuit is closed; at the same time, the working state of the on-site equipment is sent to the subway platform screen door unit controller 9 through CAN communication, and the subway platform screen door unit controller 9 feeds back the internal relay logic control data and CAN communication data to the detection device 6 through a 232 or 485 interface.

[0039] The communication interface preferably has two specifications of RS232 and RS485. Reserving two interfaces can meet the needs of detecting the output communication data of subway platform screen door unit controllers of different brands. The system also has a USB interface, through which functions such as USB flash drive data storage, software upgrade, and mouse support can be supported. The counter 2 can be a 7-digit counter, and the data can be displayed through the touch display screen 3, making the result display more intuitive.

[0040] When a communication failure occurs in the platform screen door system, the detection device 6 can synchronously detect the CAN communication data and the communication data output by the subway platform screen door unit controller, highlight the inconsistent parts after comparing the data, display them through the touch display screen 3, and upload the fault data to the remote server 8 through the remote communication module 7. Since the on-site data can be uploaded and the relevant data can be viewed and analyzed through the remote server 8, at the same time, after the system automatically stops detecting a fault, the remote fault reset function can be performed through the remote server 8 to restart the system and achieve the effect of unattended operation.

[0041] Embodiment 2

[0042] The working process of the present invention is as Figure 2 shown and has the following steps:

[0043] Step a: Connect the counter 2, power supply circuit 4, touch display screen 3, detection device 6, SIG door opening / closing simulation circuit 5, automatic time synchronization module 12, voltage detection circuit 19, and remote communication module 7 to the microprocessing unit 1. Connect the detection device 6 to the communication output end of the subway platform screen door unit controller 9 through a communication interface wire, connect the communication input end of the subway platform screen door unit controller 9 to the SIG door opening / closing simulation circuit 5, connect the subway platform screen door unit controller 9 to the door control unit 10 through CAN, and connect to control the platform screen door 11 through the door control unit 10;

[0044] Step b: Set the initial value of the counter 2 data to zero, and automatically set two counter thresholds through mode selection, namely the first preset threshold and the second preset threshold slightly higher than the first preset threshold;

[0045] Step c: Select the mode through the touch display screen 3 and click start;

[0046] Step d: The SIG door opening / closing simulation circuit 5 issues an automatic door opening / closing instruction at a frequency;

[0047] Step e: The detection device 6 reads and analyzes the output data of the subway platform screen door unit controller 9 through the communication interface. The output of the subway platform screen door unit controller 9 reflects the communication data of the internal relay logic control and the safety loop status transmitted back by the door control unit 10;

[0048] Step f: If a fault occurs in the communication data or safety loop status read in step e, automatically stop the door opening / closing operation, and upload the fault data to the remote server 8 through the remote communication module 7. After troubleshooting, return to step d;

[0049] Step g: If the data read in step e is normal, increment the counter 2 data by 1;

[0050] Step h: Detect whether the data of counter 2 reaches the first preset threshold;

[0051] If the detection result of step h is yes, send the information that the device is about to complete the test, and then execute step i; if the detection result of step h is no, proceed to step i;

[0052] Step i: Detect whether the data of counter 2 reaches the second preset threshold;

[0053] If the detection result of step i is no, return to step d; if the detection result of step i is yes, prohibit the door opening / closing action and send the information that the device has completed the test.

[0054] Embodiment 3

[0055] As Figure 3 shown in the control schematic diagram of the SIG door opening / closing simulation circuit 5. The SIG door opening / closing simulation circuit 5 can implement the simulation of the output signals of different signal systems through two control modes, namely the door opening / closing instruction and the enable / door opening instruction, sent by the analog signal system through the change-over switch.

[0056] The connections between the platform door system and the signal system are all set with double-cut circuits for control; according to the different brands of signal systems, there are two control methods: the door opening / closing instruction control method and the enable / door opening instruction control method. The two control methods mainly differ in the control logic, but the control circuits are the same. The logic tables of the door opening / closing instruction control method and the enable / door opening instruction control method are as follows:

[0057] Logic table of the door opening / closing instruction control method:

[0058] SIG Door Opening Instruction SIG Door Closing Instruction Platform Screen Door Status 1 1 Error Instruction 1 0 Open Door 0 1 Close Door 0 0 Maintain Previous Status

[0059] Enable / door opening instruction control method

[0060] SIG Enable Instruction SIG Door Opening Instruction Platform Screen Door Status 1 1 Open Door 1 0 Close Door 0 1 Error Instruction 0 0 Maintain Previous Status

[0061] In the door opening / closing instruction control method, the two circuits of the SIG door opening / closing simulation circuit 5 respectively output the SIG door opening instruction and the SIG door closing instruction; in the enable / door opening instruction control method, the SIG enable instruction and the SIG door opening instruction are respectively output.

[0062] In use, first select the control mode, and then choose whether to open and close the door automatically or manually. When opening and closing the door automatically, the microprocessing unit 1 issues corresponding commands according to the logic tables of the two control modes. After the microprocessing unit 1 issues an instruction, the first PNP transistor Q1 and the second PNP transistor Q2 are turned on. The two circuits respectively drive and control the first control relay 13 and the second control relay 14 through the first PNP transistor Q1 and the second PNP transistor Q2. After the contacts of the first control relay 13 and the second control relay 14 act, the states of the two groups of control relays are fed back to the microprocessing unit 1 through the third resistor R3 and the fourth resistor R4 to form a closed-loop control; the platform door system performs automatic door opening and closing actions according to the states of the first control relay 13 and the second control relay 14. When opening and closing the door manually, a door opening and closing instruction is sent to the microprocessing unit 1 by pressing the door opening and closing buttons. The microprocessing unit 1 completes the logical conversion of the instruction through the program according to the previous control selection, and finally issues a door opening and closing instruction that conforms to the on-site control logic. The first subway platform door unit controller relay 15 and the second subway platform door unit controller relay 16 play an isolation role, and the first diode D1 and the second diode D2 can suppress surges.

[0063] Embodiment 4

[0064] The schematic diagram of the voltage detection circuit 19 is as Figure 4 shown. The control of the platform door system is mainly set to use the voltage control method. When occasional voltage control interface faults occur on-site, such faults are extremely occasional. When using general tools such as multimeters to measure, the interface voltage status cannot be recorded in real time. Therefore, a system is needed to record the status of the interface voltage. The recorded data is locally stored through the USB interface and uploaded to the server through the remote communication module. When analysis is required, the interface voltage foldback line data can be viewed remotely or through the touch screen, which is convenient for fault analysis. After the voltage isolation sensor 17 collects the input voltage, it is divided by three highly accurate and matched fifth resistor R5, sixth resistor R6, and seventh resistor R7. After the differential amplifier 18 reads the voltage across the matching resistor 2, the voltage is amplified and converted into a 0-3V DC voltage by the differential amplifier 18, and then sent to the A / D conversion input terminal of the microprocessing unit 1. After being processed by the microprocessing unit 1, the voltage foldback line of the measured circuit is directly displayed on the touch display screen 3.

Claims

1. A platform screen door system fault detection and analysis device, characterized in that: It includes a subway platform door unit controller (9), a door control unit (10) for controlling the platform door (11), a microprocessing unit (1), a remote server (8), a counter (2), a power supply circuit (4), a touch display screen (3), a detection device (6) for communication detection, a SIG door opening / closing simulation circuit (5) for sending door opening / closing instructions, an automatic time synchronization module (12), a voltage detection circuit (19) for interface voltage detection, and a remote communication module (7) for transmitting data to the remote server (8); The subway platform door unit controller (9) and the door control unit (10) are connected through CAN communication, and the door control unit (10) is directly connected to the platform door (11); The power supply circuit (4), the touch display screen (3), the detection device (6), the SIG door opening / closing simulation circuit (5), the automatic time synchronization module (12), the voltage detection circuit (19), and the remote communication module (7) are all connected to the microprocessing unit (1); The detection device (6) is connected to the communication output end of the subway platform door unit controller (9) through a communication interface wiring, and the communication receiving end of the subway platform door unit controller (9) is connected to the SIG door opening / closing simulation circuit (5); The remote communication module (7) is connected to the remote server (8); When the platform door system fault detection and analysis device works, it has the following steps: (a) Connect the counter (2), the power supply circuit (4), the touch display screen (3), the detection device (6), the SIG door opening / closing simulation circuit (5), the automatic time synchronization module (12), the voltage detection circuit (19), and the remote communication module (7) to the microprocessing unit, connect the detection device (6) to the communication output end of the subway platform door unit controller (9) through a communication interface wiring, connect the communication input end of the subway platform door unit controller (9) to the SIG door opening / closing simulation circuit (5), connect the subway platform door unit controller (9) to the door control unit (10) through CAN, and connect and control the platform door (11) through the door control unit (10); (b) Set the initial value of the counter (2) data to zero, and automatically set two counter thresholds through mode selection, namely the first preset threshold and the second preset threshold slightly higher than the first preset threshold; (c) Select the mode through the touch display screen (3) and click start; (d) The SIG door opening / closing simulation circuit (5) issues automatic door opening / closing instructions at a frequency; (e) The detection device (6) reads and analyzes the output data of the subway platform door unit controller (9) through a communication interface connection. The output of the subway platform door unit controller (9) reflects the communication data of the internal relay logic control and the safety loop status feedback from the door control unit (10); (f) If a fault occurs in the communication data or the safety loop status read in step (e), automatically stop the door opening / closing operation, and upload the fault data to the remote server (8) by the remote communication module (7). After troubleshooting, return to step (d); (g) If the data read in step (e) is normal, increment the counter (2) data by 1; (h) Check whether the counter (2) data reaches the first preset threshold; If the detection result of step (h) is yes, the sending device will send the information that the test is about to be completed, and then execute step (i); if the detection result of step (h) is no, proceed to step (i). (i) Detect whether the data of the counter (2) reaches the second preset threshold; If the detection result of step (i) is no, return to step (d); if the detection result of step (i) is yes, prohibit the door opening and closing action and the sending device sends the information that the test is completed.

2. The platform screen door system fault detection and analysis device according to claim 1, characterized in that: The SIG door opening and closing simulation circuit (5) includes two loops with the same structure. The instruction output ends of the two microprocessing units are respectively connected to one ends of the first resistor (R1) and the second resistor (R2). The other ends of the first resistor (R1) and the second resistor (R2) are respectively connected to the bases of the first PNP transistor (Q1) and the second PNP transistor (Q2). Their collectors are both grounded, and their emitters are respectively connected to the first control relay (13) and the second control relay (14). A first diode (D1) and a second diode (D2) are respectively connected in parallel with the first control relay (13) and the second control relay (14). One contact switch of each of the first control relay (13) and the second control relay (14) is respectively connected to the feedback input end of the microprocessing unit through the third resistor (R3) and the fourth resistor (R4). The other two contact switches of each of the first control relay (13) and the second control relay (14) have one end respectively connected to the 24V+ and 24V- power supplies, and the other end is respectively connected to both ends of the first subway platform door unit controller relay (15) and the second subway platform door unit controller relay (16).

3. The platform screen door system fault detection and analysis device according to claim 1, characterized in that: The voltage detection circuit includes at least 4 paths. The voltage to be measured is connected to one end of a voltage isolation sensor (17). The other end of the voltage isolation sensor (17) is successively connected in series with the fifth resistor (R5), the sixth resistor (R6) and the seventh resistor (R7). The seventh resistor (R7) is grounded. Both ends of the sixth resistor (R6) are connected to the input end of a differential amplifier (18). The output end of the differential amplifier (18) is connected to the microprocessing unit (1).

4. The platform screen door system fault detection and analysis device according to claim 1, characterized in that: The system also has a USB interface that supports the mouse and program upgrade; the communication interface has two specifications: RS232 and RS485.

5. The platform screen door system fault detection and analysis device according to claim 1, characterized in that: The counter (2) is a 7-bit counter.

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