Intelligent opening and closing control device for subway platform safety door

Abstract

An intelligent opening and closing control device for a subway platform safety door comprises a detection unit, the signal output end of the detection unit is connected with the signal input end of a central control unit, and the signal output end of the central control unit is connected with the signal input end of an automatic execution unit and the signal input end of a display unit. Real-time monitoring is carried out through various sensors of the detection unit, a data basis is provided for intelligent control, obtained detection data is transmitted into a signal receiving module and then transmitted into a processor through a communication module of the central control unit for decision making, and the processor transmits decision information into a PLC of the automatic execution unit. The opening and closing speed, force and anti-pinch strategy of the safety door are dynamically adjusted; meanwhile, the running state information of the device is clearly displayed on the display unit; the intelligent control system integrates and processes information of various sensors through the central control unit, achieves intelligent control of the subway safety door, and has the advantages of being high in integration level, small in occupied space, convenient to develop and maintain, rapid in response, safe and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway equipment control, and particularly relates to an intelligent opening and closing control device for subway platform screen doors. Background Art

[0002] When an obstacle is encountered and the closing of the platform door is blocked, the door operating mechanism senses the presence of the obstacle and releases the closing force. After pausing for 3 s, it tries to close the door again. If the door is still blocked after repeating the closing three times, it will fully open for handling. However, in the presence of wind pressure, since the wind pressure value changes and is uncertain every time a train enters or exits, when this dynamic wind pressure acts on the door body, the platform door cannot be closed. But because the wind pressure value is variable, if the motor output force is set too large, it will cause an increase in the closing force and pinch passengers in the absence of wind pressure. Therefore, it is one of the major problems currently encountered by the platform door system to ensure the normal closing of the platform door under this dynamic wind pressure condition and meet the closing requirements at the same time.

[0003] The patent application document with the publication number CN208907342U discloses an intelligent control device for platform screen doors, which includes a power module, a controller, a motor driver, and a motor connected in sequence. It is characterized in that it further includes a platform screen door controlled by the motor switch, a Hall sensor for feedback of the motor current signal, and a rotational speed measuring instrument for feedback of the motor rotational speed signal. The Hall sensor and the rotational speed measuring instrument are respectively electrically connected between the controller and the motor. The controller automatically realizes the control of the platform screen door through the feedback of the current change and the speed of the motor rotational speed change; the intelligent control device for platform screen doors is arranged at the entrances and exits of train doors, corresponding to the upper and lower sides of the track respectively; several intelligent control devices for platform screen doors are arranged along the length of the subway platform and are electrically connected to the central monitoring control panel through a bus.

[0004] Aiming at the above-mentioned existing technologies, the current technical problems are as follows:

[0005] Limitations of sensor triggering: Only relying on the opening and closing of the door body or specific triggering events, it cannot adapt to the operation requirements of different stations and the changes in passenger flow.

[0006] Lack of intelligent management: It is difficult to realize the real-time monitoring and optimization adjustment of the status of the screen doors, and it cannot effectively predict and respond to possible emergencies. Summary of the Invention

[0007] In order to overcome the above-mentioned deficiencies of the existing technologies, the purpose of the utility model is to provide an intelligent opening and closing control device for subway platform screen doors. By adopting a multi-sensor integration device, it can intelligently control the subway platform screen doors according to the operation requirements of different stations and the changes in passenger flow, and has the advantages of intelligent management and intelligent response to emergencies.

[0008] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0009] An intelligent opening and closing control device for a subway platform safety door, comprising: a detection unit, a central control unit, an automatic execution unit and a display unit;

[0010] The detection unit includes: a power supply module 1, a signal receiving module 2, an infrared sensor 6, a pressure sensor 5 and an environmental sensor 4; the power supply module 1, the signal receiving module 2 and the environmental sensor 4 are all installed above the sliding door doorframe, and the infrared sensor 6 is fixedly installed on the two side doorframes of the sliding door; the pressure sensor 5 is fixedly installed at the relative side surface of any sliding door leaf, and the signal output ends of the infrared sensor 6, the pressure sensor 5 and the environmental sensor 4 are connected to the signal input end of the signal receiving module 2, and the signal output end of the signal receiving module 2 is connected to the signal input end of the central control unit, and the power supply module 1 is connected to the signal receiving module 2;

[0011] The central control unit is located in the platform central control room and includes: a processor, a memory and a communication module; the signal input end of the communication module is connected to the signal output end of the signal receiving module 2 of the detection unit, the signal output end of the communication module is connected to the signal input end of the processor, and the signal output end of the processor is respectively connected to the signal input ends of the memory and the automatic execution unit;

[0012] The automatic execution unit is located on one side of the platform safety door and includes a PLC, a rotational speed measuring instrument, an emergency stop button, a motor driver and a motor; among them, the emergency stop button is connected to the input point of the PLC, the signal output end of the PLC is connected to the signal input end of the motor driver, the motor driver drives the motor to rotate, and the power output shaft of the motor is connected to the connecting shaft of the hanger running wheel of the sliding door leaf, and the hanger running wheel is installed on the top of the sliding door leaf and rolls along the track fixed on the top of the sliding door doorframe; the rotational speed measuring instrument is used to detect the rotational speed of the motor, and the signal output end of the rotational speed measuring instrument is connected to the signal input end of the PLC, so that the rotational speed data of the motor detected by the rotational speed measuring instrument is transmitted to the PLC, and the signal input end of the PLC is connected to the signal output end of the processor of the central control unit;

[0013] The display unit is located on the platform display wall, and the signal input end of the display unit is connected to the signal output end of the processor of the central control unit.

[0014] The heights of the infrared sensor, the pressure sensor 5 and the environmental sensor 4 from the ground are all 80 cm to 120 cm.

[0015] The pressure sensor 5 includes a housing 51, an elastic cover plate 52 is installed on the top of the housing 51, several contact switches 54 are arranged in a ring on the inner side wall of the housing 51, and several concentrically arranged annular elastic deformation detection components 53 are arranged inside the housing 51; both the contact switches 54 and the annular elastic deformation detection components 53 are used to detect the pressure deformation amount, and for different pressure levels, the signal output ends of the contact switches 54 and the elastic deformation detection components 53 are connected to the signal input end of the signal receiving module 2 through the input port 3.

[0016] The infrared sensor 6 includes a transmitter 61 and a receiver 62, and the transmitter 61 and the receiver 62 are respectively installed on both side door frames of the sliding door 8; the signal output ends of the transmitter 61 and the receiver 62 are respectively connected to the signal input end of the signal receiving module 2 through the input port 3.

[0017] The environmental sensor 4 includes two or more of a temperature sensor, a humidity sensor, a barometric pressure sensor, a light sensor, or an air quality sensor, and the signal output ends of the temperature sensor, the humidity sensor, the barometric pressure sensor, the light sensor, and the air quality sensor are connected to the signal input end of the signal receiving module 2 through the input port 3 for real-time detection.

[0018] The temperature sensor, the humidity sensor, the barometric pressure sensor, the light sensor, and the air quality sensor are fixed by means of adhesion, screws, or buckles and installed above the sliding door frame.

[0019] The automatic execution unit further includes a manual switch, and the manual switch is drivingly connected to the hanger running wheel on the sliding door leaf through a transmission device.

[0020] The display unit is a liquid crystal display screen or an organic light-emitting diode display screen.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1) The present utility model integrates multiple sensors and installs them reasonably, which not only ensures the detection effect but also avoids interference and misjudgment. The powerful processing ability of the central control unit enables it to quickly respond to various input signals and make correct control decisions; at the same time, each automatic execution unit is equipped with a PLC to meet the different requirements of the device; and the display unit can clearly display the operation status information of the device.

[0023] 2) The present utility model has a highly integrated structure, a compact system, reduces space occupation, and improves the flexibility and adaptability of the device; each unit is an independent sub-module with clear functions, which is convenient for maintenance, upgrade, and troubleshooting, and improves the expandability and long-term operation reliability of the device.

[0024] In summary, the utility model integrates and processes various sensor information through the central control unit, realizes the intelligent control of the subway safety door, and has the advantages of high integration, small occupied space, convenient development, maintenance, rapid response, and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural diagram of an intelligent opening and closing control device for a subway platform safety door provided by an embodiment of the utility model.

[0026] Figure 2 FIG. is a connection diagram of a detection unit provided by an embodiment of the utility model.

[0027] Figure 3 FIG. is a position diagram of each component of the detection unit provided by an embodiment of the utility model.

[0028] Figure 4 FIG. is a structural diagram of a pressure sensor provided by the utility model.

[0029] Figure 5 FIG. is a connection diagram of a central control unit provided by the utility model.

[0030] Figure 6 FIG. is a connection diagram of an automatic execution unit provided by the utility model.

[0031] Wherein: 1 - power supply module, 2 - signal receiving module, 3 - input port, 4 - environmental sensor, 5 - pressure sensor, 6 - infrared sensor, 7 - manual switch, 8 - sliding door, 9 - fixed door, 51 - housing, 52 - elastic cover plate, 53 - elastic deformation detection component, 54 - contact switch, 61 - emitter, 62 - receiver. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The technical solutions adopted by the utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] The utility model discloses an intelligent opening and closing control device for a subway platform safety door, including: a detection unit, a central control unit, an automatic execution unit, and a display unit;

[0034] As Figure 1 shown, there are n safety doors in total. From the overall layout, a central control unit is equipped with y display units, can control x automatic execution units, each automatic execution unit controls one or more safety doors, and each safety door is equipped with a detection unit; where x, y, and n are all greater than or equal to 1.

[0035] Taking a newly built subway platform as an example, the present device will be introduced in detail; the present device includes 50 safety doors, 50 detection units, 1 central control unit, 25 automatic execution units and 5 display units.

[0036] The safety doors are installed at the edge of the platform of the stations along the line, separating the platform area from the train operation area; in this embodiment, full-height platform doors are adopted, which not only ensure the safety of passengers, but also isolate subway noise.

[0037] The safety door consists of a sliding door leaf, a sliding door frame, a fixed door, a hanger wheel, etc.; there is a shield above the safety door, which is non-transparent; the door bodies of the sliding door and the fixed door of the safety door are both transparent toughened safety and environmental protection glass, and the fixed door does not have the function of sliding and is firmly installed by screws, rivets or other fasteners; the hanger wheel is installed at the top of the sliding door leaf and rolls along the track fixed at the top of the sliding door frame. By adjusting the position and tension of the hanger wheel, the smoothness and stability of the sliding door during the opening and closing processes can be ensured.

[0038] The 50 safety doors are correspondingly connected to the 50 detection units, as Figure 2 shown, each detection unit includes: a power supply module 1, a signal receiving module 2, an input port 3, an infrared sensor 6, a pressure sensor 5 and an environmental sensor 4. The power supply module 1, the signal receiving module 2 and the environmental sensor 4 are all installed above the sliding door frame, and the infrared sensor 6 is fixedly installed on both side frames of the sliding door; the pressure sensor 5 is fixedly installed at the relative side surface of any sliding door leaf, and the signal output ends of the infrared sensor 6, the pressure sensor 5 and the environmental sensor 4 are connected to the signal input end of the signal receiving module 2, and the signal output end of the signal receiving module 2 is connected to the signal input end of the central control unit, and the power supply module 1 is connected to the signal receiving module 2.

[0039] As Figure 3 shown, based on the positions of the sliding door 8 and the fixed door 9 of the safety door, the components of the detection unit are allocated; the power supply module 1 is a 24V or 36V safety voltage and is directly connected to the signal receiving module 2 for supplying power to the signal receiving module 2 and each sensor; it is installed at the shield above the sliding door 8 frame, which is convenient for receiving signals without affecting passengers.

[0040] The signal receiving module 2 can receive various sensor signals and convert them into electrical signals, and is also installed at the shield above the sliding door 8 frame, communicating with the processor of the central control unit and performing subsequent processing or control.

[0041] The pressure sensor 5 is fixedly installed at the relative side surface of any sliding door leaf, referring to Figure 4As shown, its structure includes a housing 51, an elastic cover plate 52 is installed on the top of the housing 51, and a number of contact switches 54 are arranged in a circular pattern on the inner side wall of the housing 51. The model of the contact switch 54 is PQ-3-X1. Inside the housing 51, a number of concentrically arranged circular elastic deformation detection components 53 are provided. The model of the circular elastic deformation detection components 53 is ZZ210-041. When being squeezed, both the contact switch 54 and the circular elastic deformation detection components 53 are used to detect the pressure deformation amount, but the pressure levels are different, and each level also has different pressure degrees. Finally, the elastic cover plate 52 ensures that the pressure sensor will not be damaged due to extrusion deformation.

[0042] When applied to the sliding door leaf and the external pressure is transmitted to the pressure sensor 5, the elastic cover plate 52 is first squeezed and undergoes elastic deformation. The degree of deformation depends on the magnitude of the external pressure. The contact switch 54 responds. As the elastic cover plate 52 deforms, the contact switch 54 may be triggered. The output signal of the contact switch 54 is a simple on / off signal, which is used to indicate the presence or absence of pressure or exceeding a certain specific value. The elastic deformation detection component 53 changes its resistance value according to the deformation degree of the elastic cover plate 52. Different deformation degrees correspond to different resistance values, thus achieving the precise measurement of the pressure deformation amount.

[0043] The signals (electrical signals or resistance value changes) generated by the contact switch 54 and the elastic deformation detection component 53 are connected to the signal receiving module 2 through the input port 3 and signal processing is performed. The elastic characteristics of the elastic cover plate 52 allow the pressure sensor 5 to withstand pressure within a certain range without affecting the measurement accuracy or service life.

[0044] In this embodiment, the infrared sensor 6 includes a transmitter 61 and a receiver 62. For example, the opposed type infrared sensor PC12L-T5A. Its transmitter 61 and receiver 62 are respectively installed on the left and right door frames of the sliding door 8 and are relatively fixedly installed. The height from the ground is 80 cm to 120 cm. Based on ergonomic considerations, this height range roughly corresponds to the area between the waist and chest of most adults, which is the area where the main part of the body will pass through when passengers pass through the security door and is convenient for maintenance. Its transmitter 61 and receiver 62 are respectively electrically connected to the signal receiving module 2 through the input port 3.

[0045] The environmental sensor 4 includes a temperature sensor, a humidity sensor, a barometric pressure sensor, a light sensor, and an air quality sensor. Its fixing method can adopt gluing, screwing or buckling methods. Then, each sensor is connected to the signal receiving module 2 through the input port 3 for real-time detection.

[0046] The model of the temperature sensor is PT100, the model of the humidity sensor is AE585, the model of the barometric pressure sensor is FKS, the model of the light sensor is DP-RY-G / W, and the model of the air quality sensor is AM1008.

[0047] In this embodiment, the environmental sensor 4 selects a humidity sensor and a barometric pressure sensor. The environmental sensor includes a sensor probe and a processing circuit, and its sensor probe is directly electrically connected to the processing circuit and fixed to the shield above the sliding door frame with screws; the detected data is transmitted into the central control unit through a wireless network for data analysis; the processor of the central control unit adopts a processor of the ARM Cortex series or the Intel Atom series, predicts the passenger flow peak and change trend according to the real-time data, and automatically adjusts the opening and closing strategy of the door.

[0048] The central control unit is located in the central control room of this platform, as Figure 5 shown, and includes: a processor, a memory, an input / output interface, and a communication module; the processor is electrically connected to the memory, the input / output interface, and the communication module respectively; the input / output interface is connected to the automatic execution unit through a bus; the processor communicates with the signal receiving module through the communication module; the processor receives the real-time detection data of each detection unit through a wireless connection, and dynamically adjusts the opening and closing speed, force, and anti-pinch strategy of the safety door according to the collected data; at the same time, learns the passing habits of passengers through machine learning algorithms, optimizes the door opening time, and reduces the waiting time. Among them, the data processing software is all existing technologies in the market and is not within the scope of protection of this application.

[0049] The memory is used to store the control parameters and historical data of the control unit, providing data support for subsequent fault analysis and prediction.

[0050] The communication module is responsible for the communication between the central control unit and other systems (such as the detection module, the monitoring system, the subway train control system, the superior dispatching center, etc.), realizing the real-time sharing and collaborative work of information. For example, the subway train control system communicates with the central control unit through the communication module to realize the automatic opening of the safety door system after the subway arrives at the station, which helps to realize intelligent management.

[0051] The processor is electrically connected to the memory, the input / output interface, and the communication module respectively; the input / output interface is connected to the automatic execution unit through a bus; to control the opening and closing of the door body, so that the opening and closing of the safety door cooperate with the arrival of the train, ensuring the smooth operation of the safety door.

[0052] The automatic execution unit is located on one side of the platform safety door, which neither affects the passage of passengers getting on and off the train nor is convenient for passengers to observe the status of the indicator lights, as Figure 6As shown in the figure, it includes a PLC, a rotational speed measuring instrument, an emergency stop button, an indicator light, a motor driver, and a motor. Among them, the PLC is connected to the emergency stop button and the motor driver, the motor driver is connected to the motor, and the power output shaft of the motor is connected to the connecting shaft of the hanger wheel of the sliding door leaf. It is also connected to the PLC through the rotational speed measuring instrument to achieve closed-loop feedback, ensuring that the power supply of the PLC can be quickly cut off in case of emergency, so that the sliding door leaf is not controlled by the PLC, protecting the lives of passengers without affecting other safety doors. The indicator light can not only indicate the status of the safety door, but also indicate the power-on situation and the control situation of the safety door solution.

[0053] In this embodiment, the motor of the automatic execution unit uses a 24V / 100W DC brushless synchronous motor; the PLC uses the Mitsubishi FX3U series or the Siemens S7-1200 series; the rotational speed measuring instrument detects the rotational speed of the motor and transmits the detected digital signal to the PLC. The PLC controls the motor driver so that the motor makes corresponding actions, such as increasing the rotational speed of the motor during peak hours. Among them, the rotational speed measuring instrument is electrically connected between the motor and the PLC respectively, and its rotational speed probe is a magnetoelectric rotational speed sensor probe ZS-01, which has the advantages of good anti-interference ability, high sensitivity, strong anti-impact and anti-seismic performance, and can work stably under various harsh environmental conditions without being affected by external interference and impact, thus ensuring the accuracy and stability of the measurement.

[0054] For example, in this embodiment, when the central control unit receives the signal that the subway arrives at the station from the train control system, during peak hours, the central control unit transmits the decision-making information to the automatic execution unit. The PLC of the automatic execution unit controls the motor through the motor driver to increase the rotational speed, increase the opening and closing speed of the safety door, and improve the passing efficiency.

[0055] For example, it helps to achieve object detection and motion prediction based on deep learning, accurately predict the motion trajectory of the human body, and activate the anti-pinch function in advance; at the moment when the safety door is about to close, detect whether there are people or objects in the door gap area; if no obstacles or people are detected, the closing force is set to be larger, and if obstacles or people are detected, the closing force is set to be smaller. Control the opening and closing of a single safety door according to the pressure level, size, and time, which not only protects the safety of passengers and plays an anti-pinch role, but also does not affect the closing of other safety doors and the operation of the subway.

[0056] The highly integrated and modular design lays a foundation for realizing the intelligent management of urban transportation.

[0057] In this embodiment, the automatic execution unit further includes a manual switch. The manual switch is drivingly connected to the hanger wheel of the sliding door leaf through a transmission device, and its position is as Figure 3As shown in the figure, when the safety door is powered off or manual control is required, the manual switch connects to and controls the suspension wheel of the sliding door leaf. There is also a manual master switch in the platform central control room, which can not only be used for emergency manual control but also facilitate maintenance and fault detection.

[0058] The sliding door leaf is composed of multiple door panels, which are connected to the running wheel system through a suspension device. The suspension device includes components such as suspension wheels and suspension brackets, and the running wheels are installed at the bottom or top of the door leaf to support and guide the sliding of the door leaf.

[0059] The manual switch is a mechanical switch installed near the door frame. Users can control the opening and closing of the door through manual operation. The manual switch can be designed in the form of a rotary switch, a push-pull switch, or a pull-rod switch, etc. The manual switch can specifically adopt a 56SW210 square rotary switch. Inside the door frame or on the side of the door leaf, a transmission device is installed to transmit the operating force of the manual switch to the suspension wheel system of the sliding door. The transmission device can include components such as gears, chains, belts, or screws, which connect the manual switch and the running wheel drive device.

[0060] The operation of the manual switch changes the motion state of the running wheels through the transmission device, thereby controlling the opening and closing of the door leaf. For example, the rotary switch can drive the sliding of the door leaf through a gear system, and the push-pull switch may achieve a similar effect through a chain or belt system.

[0061] The display unit is located on the platform display wall opposite the subway, elevator, or staircase. Its display screen is a liquid crystal display screen or an organic light-emitting diode display screen. Passengers can see the display screen while on the elevator or staircase, and also while waiting for the subway. The liquid crystal display screen or the organic light-emitting diode display screen, as the display unit, receives the output signal of the processor of the central control unit.

[0062] This device uses a detection unit for real-time monitoring to provide a data basis for intelligent control, so that the central control unit can predict the passenger flow peak and change trend based on real-time data and automatically adjust the door opening and closing strategy. The automatic execution unit integrates a high-precision motor control system and an intelligent actuator to ensure the precise opening and closing of the door and fast response. The display unit provides a remote monitoring platform to display the door status, operation data, and abnormal alarms in real time, which helps to achieve intelligent management, remote management, and fault diagnosis, and improve the maintenance efficiency.

[0063] Adopting the modular design concept, it is divided into multiple independent sub-modules, which is convenient for maintenance, upgrade, and fault troubleshooting, and reduces the failure rate. It can accurately identify passengers and obstacles, effectively prevent the occurrence of incidents of pinching people or objects. The emergency stop button and the manual button improve the emergency handling ability. It helps to achieve real-time monitoring and optimized adjustment of the safety door status, and effectively predict and respond to possible emergencies.

[0064] The working principle of the present utility model is as follows:

[0065] This device conducts real-time monitoring through various sensors of the detection unit, providing a data basis for intelligent control. After the acquired detection data is transmitted to the signal receiving module 2, it is transmitted into the processor through the communication module of the central control unit for decision-making. The processor of the central control unit transmits the decision information to the PLC of the automatic execution unit to dynamically adjust the opening and closing speed, strength, and anti-pinch strategy of the safety door; meanwhile, the operating status information of the device is clearly displayed on the display unit.

[0066] The application prospect of the present utility model is as follows:

[0067] It helps to achieve intelligent management, realize real-time sharing of information and collaborative work, and lay a foundation for building urban transportation and remote control.

Claims

1. An intelligent opening and closing control device for the platform screen door of a subway station, characterized in that, Including: A detection unit, a central control unit, an automatic execution unit, and a display unit; The detection unit includes: a power supply module (1), a signal receiving module (2), an infrared sensor (6), a pressure sensor (5), and an environmental sensor (4); the power supply module (1), the signal receiving module (2), and the environmental sensor (4) are all installed above the sliding door doorframe, and the infrared sensor (6) is fixedly installed on the two side doorframes of the sliding door; the pressure sensor (5) is fixedly installed at the relative side surface of any sliding door leaf. The signal output ends of the infrared sensor (6), the pressure sensor (5), and the environmental sensor (4) are connected to the signal input end of the signal receiving module (2), the signal output end of the signal receiving module (2) is connected to the signal input end of the central control unit, and the power supply module (1) is connected to the signal receiving module (2); The central control unit is located in the platform central control room and includes: a processor, a memory, and a communication module; the signal input end of the communication module is connected to the signal output end of the signal receiving module (2) of the detection unit, the signal output end of the communication module is connected to the signal input end of the processor, and the signal output end of the processor is respectively connected to the signal input ends of the memory and the automatic execution unit; The automatic execution unit is located on one side of the platform safety door and includes a PLC, a rotational speed measuring instrument, an emergency stop button, a motor driver, and a motor; among them, the emergency stop button is connected to the input point of the PLC, the signal output end of the PLC is connected to the signal input end of the motor driver, the motor driver drives the motor to rotate, the power output shaft of the motor is connected to the connecting shaft of the hanger trolley wheel of the sliding door leaf, the hanger trolley wheel is installed at the top of the sliding door leaf and rolls along the track fixed at the top of the sliding door doorframe; the rotational speed measuring instrument is used to detect the rotational speed of the motor, and the signal output end of the rotational speed measuring instrument is connected to the signal input end of the PLC so that the motor rotational speed data detected by the rotational speed measuring instrument is transmitted to the PLC, and the signal input end of the PLC is connected to the signal output end of the processor of the central control unit; The display unit is located on the platform display wall, and the signal input end of the display unit is connected to the signal output end of the processor of the central control unit.

2. The intelligent opening and closing control device for the platform safety door of a subway station according to claim 1, wherein, The heights of the infrared sensor, the pressure sensor (5), and the environmental sensor (4) from the ground are all 80 cm to 120 cm.

3. An intelligent opening and closing control device for a subway platform safety door according to claim 1, characterized in that, The pressure sensor (5) includes a housing (51), an elastic cover plate (52) is installed on the top of the housing (51), several contact switches (54) are arranged in a ring on the inner side wall of the housing (51), and several concentrically arranged annular elastic deformation detection components (53) are arranged inside the housing (51); both the contact switches (54) and the annular elastic deformation detection components (53) are used to detect the pressure deformation amount, and for different pressure levels, the signal output ends of the contact switches (54) and the elastic deformation detection components (53) are connected to the signal input end of the signal receiving module (2) through the input port (3).

4. The intelligent opening and closing control device for the platform safety door of a subway station according to claim 1, wherein The infrared sensor (6) includes a transmitter (61) and a receiver (62), and the transmitter (61) and the receiver (62) are respectively installed on both side door frames of the sliding door (8); the signal output ends of the transmitter (61) and the receiver (62) are respectively connected to the signal input ends of the signal receiving module (2) through the input ports (3).

5. An intelligent opening and closing control device for a subway platform safety door according to claim 1, characterized in that, The environmental sensor (4) includes two or more of a temperature sensor, a humidity sensor, a barometric pressure sensor, a light sensor or an air quality sensor, and the signal output ends of the temperature sensor, the humidity sensor, the barometric pressure sensor, the light sensor and the air quality sensor are connected to the signal input ends of the signal receiving module (2) through the input ports (3) for real-time detection.

6. The intelligent opening and closing control device for the platform screen door of a subway station according to claim 5, wherein, The temperature sensor, the humidity sensor, the barometric pressure sensor, the light sensor and the air quality sensor are fixed by means of gluing, screws or buckles above the sliding door frame.

7. An intelligent opening and closing control device for a subway platform safety door according to claim 1, characterized in that, The automatic execution unit further includes a manual switch, and the manual switch is drivingly connected to the hanger trolley wheel on the sliding door leaf through a transmission device.

8. An intelligent opening and closing control device for a subway platform safety door according to claim 1, characterized in that, The display unit is a liquid crystal display screen or an organic light emitting diode display screen.

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