Auxiliary backup system AUXbk for platform door system control

Abstract

The invention discloses an auxiliary backup system AUXbk for platform door system control. The auxiliary backup system AUXbk comprises a local control panel PSL, a vehicle position detection system, a vehicle door action detection system, a first terminal processing controller, a second terminal processing controller, a first logic control unit and a second logic control unit. Wherein the vehicle position detection system, the vehicle door action detection system, the first terminal processing controller, the second terminal processing controller, the first logic control unit and the second logic control unit adopt redundancy design; the local control panel PSL is used for providing an activation signal of the AUXbk; the train parking position detection and door opening and closing functions can be more accurately executed, and the system safety level can reach SIL3.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to an auxiliary backup system AUXbk for platform door system control. Background Art

[0002] At present, there are three control modes for platform door systems at home and abroad (normal mode, degraded mode and manual mode); (1) Normal mode: In the normal operation mode of the system, when the train arrives at the station and stops within the allowable error range, the platform door system receives the control command of the signal system and controls the automatic opening and closing of the platform sliding door; (2) Degraded mode: When the signal system fails, the platform door system will enter the degraded operation mode. In this mode, the local control panel (PSL) or integrated control panel (IBP) is generally used for control. When the platform door is in the PSL or IBP control mode, the platform door system will ignore the command sent by the signal system, thereby realizing priority control operation. In this mode, manual operation is required; (3) Manual mode: When the signal system fails or the station kick door system fails, the station staff can manually operate the platform door through the mode switch on the platform side to control the opening and closing of the sliding door. It can be seen that in the event of a signal system failure, the traditional platform door system requires manual operation and cannot adapt to the automated operation scenario in the fully automatic driving mode. In addition, this method requires the deployment of relevant personnel every time a train enters or leaves the station / opens and closes the door. The operation is relatively cumbersome and the operation burden is heavy. Since manual judgment is required, there is a large degree of subjective judgment, which will affect the train operation efficiency due to untimely operation, resulting in train delays or congestion. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide an auxiliary backup system AUXbk for platform door system control, which can solve the problem that when the signal system fails and cannot be used (signal system upgrade and maintenance, trackside or vehicle equipment failure), the train parking position can be detected and the platform door system can be automatically opened and closed through a set of equipment independent of the signal system.

[0004] Technical solution: The auxiliary backup system AUXbk for platform door system control described in the present invention comprises: a local control panel PSL, a vehicle position detection system, a door motion detection system, a first terminal processing controller, a second terminal processing controller, a first logic control unit and a second logic control unit; wherein the vehicle position detection system, the door motion detection system, the first terminal processing controller, the second terminal processing controller, the first logic control unit and the second logic control unit adopt a redundant design; the local control panel PSL is used to provide an activation signal of AUXbk; the vehicle position detection system is used to detect whether the train is at the station and has stopped within the allowable error range, and feeds back the detection signal to the first Terminal processing controller, second terminal processing controller; the door action detection system is used to detect the door action and feed back the detection signal to the first terminal processing controller and the second terminal processing controller; the first terminal processing controller and the second terminal processing controller receive signals from the vehicle position detection system and the door action detection system, and output control commands that meet the SIL3 level requirements after software processing; the first logic control unit and the second logic control unit receive commands from the first terminal processing controller and the second terminal processing controller, and convert them into control commands for controlling the automatic operation of the platform door system through a hardware control circuit that meets the SIL3 level requirements, and realize priority control operations between the signal system.

[0005] Further, the vehicle position detection system communicates with the first terminal processing controller via a hard-line signal or a wifi signal or a 4G / 5G signal or Ethernet; the door action detection system communicates with the second terminal processing controller via a wifi signal or a 4G / 5G signal or Ethernet; Furthermore, the vehicle position detection system communicates with the first terminal processing controller via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet; the vehicle position detection system communicates with the first logic control unit via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet; the door action detection system communicates with the second logic control unit via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet.

[0006] Furthermore, the vehicle position detection system communicates with the first terminal processing controller via a hard-line signal, a wifi signal, a 4G / 5G signal, or Ethernet, and the activation signal of AUXbk includes: activating the door action detection system to automatically open and close the door and activating the vehicle position detection system to indicate that the train has arrived at the station and stopped.

[0007] Furthermore, the vehicle position detection system communicates with the first terminal processing controller via a hard wire signal or a WiFi signal or a 4G / 5G signal or Ethernet. The vehicle position detection system includes a laser device, a radar device, an ultrasonic device, a video detection device, a positioning beacon device, a railway fork device and a wheel sensor.

[0008] Furthermore, the vehicle position detection system communicates with the first terminal processing controller through a hard wire signal or a WiFi signal or a 4G / 5G signal or Ethernet. The door action detection system includes: a laser device, a radar device, a video detection device and a photoelectric sensor.

[0009] Furthermore, the vehicle position detection system communicates with the first terminal processing controller via a hard-line signal, a WiFi signal, a 4G / 5G signal, or Ethernet, and the control commands include: enabling, opening the door, and closing the door.

[0010] Furthermore, the first logic control unit and the second logic control unit include: a SIG control module, an enable control circuit, a door opening control circuit, a door closing control circuit, a power interface circuit, a contact monitoring circuit and a self-diagnosis circuit; wherein the enable control circuit is used to receive the enable command from the first terminal processor and the second terminal processor, and output the enable control command of the platform door system, the door opening control circuit is used to receive the door opening command from the first terminal processor and the second terminal processor, and output the door opening control command of the platform door system, the door closing control circuit is used to receive the door closing command from the first terminal processor and the second terminal processor, and output the door closing control command of the platform door system, the power interface circuit is used to supply power to the first logic control unit and the second logic control unit, the contact monitoring circuit is used to monitor the internal relay state of the logic control unit, the self-diagnosis circuit is used to diagnose the fault of the logic control unit (including input signal fault, output signal fault light), and the priority control module is used for priority switching of AUXbk control and SIG control of the platform door system. When there is a higher priority module, the module with low priority control will not be able to realize the control function.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: It adopts a fully automatic control mode, which avoids the need for manual operation of traditional platform door systems in the event of a signal system failure, and is unable to adapt to the automated operation scenario under the fully automatic driving mode. The operation is relatively cumbersome and the operation burden is heavy. Since manual judgment is required, there is a large degree of subjective judgment, which may affect the train operation efficiency due to untimely operation, leading to the risk of train delays or congestion, etc. It can more accurately perform train parking position detection and door opening and closing functions, and the system safety level can reach SIL3, which can replace manual labor and improve system safety, reliability and operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 AUXbk system architecture schematic diagram of the present invention; Figure 2 It is a schematic diagram of a logic control circuit of the present invention; Figure 3 Schematic diagram of the system workflow of the present invention. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0014] like Figure 1 As shown, an embodiment of the present invention provides an auxiliary backup system AUXbk for platform door system control, comprising: a local control panel PSL, a vehicle position detection system, a door motion detection system, a first terminal processing controller, a second terminal processing controller, a first logic control unit and a second logic control unit; wherein the vehicle position detection system, the door motion detection system, the first terminal processing controller, the second terminal processing controller, the first logic control unit and the second logic control unit adopt a redundant design; the local control panel PSL is used to provide an activation signal of AUXbk; the vehicle position detection system is used to detect whether the train is at the station and has stopped within the allowable error range, and feeds back the detection signal to the first Terminal processing controller, second terminal processing controller; the door action detection system is used to detect the door action and feed back the detection signal to the first terminal processing controller and the second terminal processing controller; the first terminal processing controller and the second terminal processing controller receive signals from the vehicle position detection system and the door action detection system, and output control commands that meet the SIL3 level requirements after software processing; the first logic control unit and the second logic control unit receive commands from the first terminal processing controller and the second terminal processing controller, and convert them into control commands for controlling the automatic operation of the platform door system through a hardware control circuit that meets the SIL3 level requirements, and realize priority control operations between the signal system.

[0015] Wherein, the vehicle position detection system communicates with the first terminal processing controller via hard-wired signals or wifi signals or 4G / 5G signals or Ethernet; the door motion detection system communicates with the second terminal processing controller via wifi signals or 4G / 5G signals or Ethernet; the vehicle position detection system communicates with the first terminal processing controller via hard-wired signals or wifi signals or 4G / 5G signals or Ethernet. The vehicle position detection system communicates with the first logic control unit via hard-wired signals or wifi signals or 4G / 5G signals or Ethernet; the door motion detection system communicates with the second logic control unit via hard-wired signals or wifi signals or 4G / 5G signals or Ethernet. The vehicle position detection system communicates with the first terminal processing controller via hard-wired signals or wifi signals or 4G / 5G signals or Ethernet. The activation signal of AUXbk includes: activating the door motion detection system to automatically open and close the door and activating the vehicle position detection system to indicate that the train has arrived at the station and stopped. The vehicle position detection system communicates with the first terminal processing controller via hard-wire signals or wifi signals or 4G / 5G signals or Ethernet. The vehicle position detection system includes laser equipment, radar equipment, ultrasonic equipment, video detection equipment, positioning beacon equipment, railway inverted fork equipment and wheel sensors. The vehicle position detection system communicates with the first terminal processing controller via hard-wire signals or wifi signals or 4G / 5G signals or Ethernet. The door action detection system includes: laser equipment, radar equipment, video detection equipment and photoelectric sensors. The vehicle position detection system communicates with the first terminal processing controller via hard-wire signals or wifi signals or 4G / 5G signals or Ethernet. The control commands include: enable, open door and close door. The first logic control unit and the second logic control unit include: a SIG control module, an enable control circuit, a door opening control circuit, a door closing control circuit, a power interface circuit, a contact monitoring circuit and a self-diagnosis circuit; wherein, the enable control circuit is used to receive the enable command from the first terminal processor and the second terminal processor, and output the enable control command of the platform door system, the door opening control circuit is used to receive the door opening command from the first terminal processor and the second terminal processor, and output the door opening control command of the platform door system, the door closing control circuit is used to receive the door closing command from the first terminal processor and the second terminal processor, and output the door closing control command of the platform door system, the power interface circuit is used for power supply of the first logic control unit and the second logic control unit, the contact monitoring circuit is used to monitor the internal relay state of the logic control unit, the self-diagnosis circuit is used to diagnose the fault of the logic control unit (including input signal fault, output signal fault light), and the priority control module is used for priority switching of AUXbk control and SIG control of the platform door system. When there is a higher priority module, the module with low priority control will not be able to realize the control function.

[0016] like Figure 3As shown, the system workflow is as follows: when the signal system fails, the platform personnel operate the activation switch on the PSL to activate the AUXbk system. When the train enters the station, the sensor set by the door status detection system is triggered according to the established logic, informing the terminal processing controller that a vehicle has entered the station. At the same time, the vehicle position detection system starts working. When it is detected that the vehicle is at the station and has stopped within the allowable error range, the terminal controller outputs a vehicle stop and accurate signal to the logic control unit. At the same time, the door status detection system continues to detect the door status. When the sensor set by the door status detection system is triggered according to the established logic for opening the door, it is judged that the door is open. At this time, the terminal controller will output a door opening signal to the logic control unit, and the enable control circuit and door opening control circuit of the logic control unit will be activated, outputting door opening and enable commands to the platform door system to execute the door opening operation. When the door status detection system continuously detects the door status, when the sensor set in the door status detection system is triggered according to the established logic of door closing, it is judged that the door is open. At this time, the terminal controller will output the door closing signal to the logic control unit, and the enabling control circuit and door closing control circuit of the logic control unit will be activated, outputting the door closing and enabling commands to the platform door system to execute the door closing operation. When the platform door is closed and locked, the door status detection system and the vehicle position detection system will continue to detect the vehicle status until the vehicle leaves the platform. The door status detection system is used to detect the door movement (opening / closing) and feed back the detection signal to the terminal processor. Redundant door status detection sensors are installed on the platform door structure facing the track side of the platform door system sliding door. The movement status of the train door is determined according to the triggering sequence of the sensors. When at least N groups of sensors are triggered, the door status can be determined by the triggering sequence of the sensors, and a control command is issued to the platform door system. At the same time, it is determined whether the door opening and closing actions are completed within a certain period of time. If a fault occurs, a door closing command is issued to the platform door system.

[0017] like Figure 2As shown in the figure, the hardware circuit composition diagram of the logic control unit. The main function of the logic control power supply is to accept the command sent by the terminal processor and convert it into the control command of the platform door system. It is mainly composed of an enable control circuit, a door opening control circuit, a door closing control circuit, a power interface circuit, a contact monitoring circuit and a self-diagnosis circuit. The enable control circuit is composed of redundant safety relays. When the vehicle stops accurately and stably, the enable control circuit is activated through a double-break design. After the safety relay inside the enable control circuit is activated, the enable command is output to the platform door system through the logical combination of the relay contacts, and the power supply of the signal system control circuit is cut off to achieve priority control. The door opening and closing control circuits can receive the door opening and closing instructions from the terminal processor, drive the redundant relays inside their respective circuits to act, and output the platform door opening / closing command to the platform door system. The contact monitoring circuit will monitor the status of each relay of the logic control unit in real time, and will issue an alarm when the relay action is not synchronized or cannot act. The power interface circuit is composed of a voltage-stabilizing diode, a complex resistor and a protection period, which is used to stably provide the voltage of the logic control unit. The self-diagnosis circuit can collect the input and output voltages and relay status in the logic control unit in real time to determine the status of the control circuit. When the input and output voltages are lower or higher than the set safety threshold or the relay action is not synchronized or does not act, an alarm signal will be generated, improving the safety and reliability of the system.

Claims

1. An auxiliary backup system AUXbk for platform door system control, characterized in that: include: A local control panel PSL, a vehicle position detection system, a door movement detection system, a first terminal processing controller, a second terminal processing controller, a first logic control unit and a second logic control unit; wherein the vehicle position detection system, the door movement detection system, the first terminal processing controller, the second terminal processing controller, the first logic control unit and the second logic control unit are designed redundantly; the local control panel PSL is used to provide an activation signal for AUXbk; the vehicle position detection system is used to detect whether the train is at the station and has stopped within the allowable error range, and feed back the detection signal to the first terminal processing controller and the second terminal processing controller; the door movement detection system is used to detect the door movement and feed back the detection signal to the first terminal processing controller and the second terminal processing controller; the first terminal processing controller and the second terminal processing controller receive signals from the vehicle position detection system and the door movement detection system, and output control commands that meet the SIL3 level requirements after performing data calculation processing through a two-by-two-take-two logic; the first logic control unit and the second logic control unit receive commands from the first terminal processing controller and the second terminal processing controller, and convert them into control commands for controlling the automatic operation of the platform door system through a hardware control circuit that meets the SIL3 level requirements, and realize priority control operations with the signal system.

2. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller via hard-line signals, wifi signals, 4G / 5G signals, or Ethernet; the door action detection system communicates with the second terminal processing controller via hard-line signals, wifi signals, 4G / 5G signals, or Ethernet.

3. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet; the vehicle position detection system communicates with the first logic control unit via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet; the door action detection system communicates with the second logic control unit via a hard-wire signal, a WiFi signal, a 4G / 5G signal, or Ethernet.

4. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller via a hard-line signal, a wifi signal, a 4G / 5G signal, or an Ethernet. The activation signal of AUXbk includes: activating the door action detection system to automatically open and close the door and activating the vehicle position detection system to indicate that the train has arrived at the station and stopped.

5. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller through a hard wire signal, a WiFi signal, a 4G / 5G signal, or an Ethernet. The vehicle position detection system includes a laser device, a radar device, an ultrasonic device, a video detection device, a positioning beacon device, a railway inverted fork device, and a wheel sensor.

6. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller through a hard wire signal, a WiFi signal, a 4G / 5G signal, or an Ethernet. The door action detection system includes: laser equipment, radar equipment, video detection equipment, and a photoelectric sensor.

7. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The vehicle position detection system communicates with the first terminal processing controller via a hard wire signal, a WiFi signal, a 4G / 5G signal, or an Ethernet. The control commands include: enabling, opening the door, and closing the door.

8. The auxiliary backup system for platform door system control according to claim 1, characterized in that: The first logic control unit and the second logic control unit include: a priority control module, an enable control circuit, a door opening control circuit, a door closing control circuit, a power interface circuit, a contact monitoring circuit and a self-diagnosis circuit; wherein, the enable control circuit is used to receive the enable command from the first terminal processor and the second terminal processor, and output the enable control command of the platform door system, the door opening control circuit is used to receive the door opening command from the first terminal processor and the second terminal processor, and output the door opening control command of the platform door system, the door closing control circuit is used to receive the door closing command from the first terminal processor and the second terminal processor, and output the door closing control command of the platform door system, the power interface circuit is used for power supply of the first logic control unit and the second logic control unit, the contact monitoring circuit is used to monitor the internal relay state of the logic control unit, the self-diagnosis circuit is used to diagnose the fault of the logic control unit, including input signal fault and output signal fault light, the priority control module is used for priority switching of AUXbk control and SIG control of the platform door system, when there is a higher priority module, the module with low priority control will not be able to realize the control function.

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