Platform door gap detection device control method and system

Abstract

The invention discloses a platform door gap detection device control method and system, and belongs to the technical field of platform door fault detection. When a train is in an automatic driving mode, a gap detection device is controlled to detect a platform door gap for the first time before a platform door is closed; when the detection result is not abnormal, the platform door closing action is executed, and it is guaranteed that when foreign matter or people fall into the platform door or are squeezed into the gap between the vehicle door and the platform door, the personnel safety cannot be threatened and the platform door cannot be damaged due to the fact that the platform door is closed; the problem that when a foreign matter or a person falls into or is squeezed into a gap between a vehicle door and the platform door, the operation of closing the vehicle door and the platform door is still executed firstly, and consequently the operation safety of the platform door is not high is solved. And when the second detection result is not abnormal, the platform door gap detection device is closed, so that invalid work of the gap detection device is avoided, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of platform door fault detection, and in particular to a control method and system for a platform door gap detection device. Background Art

[0002] Most of the platform door subsystems of the unmanned fully automatic operation system lines of rail transit are equipped with gap detection devices to scan the specific slit plane between the train door and the platform door, and detect people or objects accidentally stranded in the slit. On the traditional lines equipped with CBTC signal systems, the risk of people or objects being caught when closing the platform doors is avoided to a certain extent through management measures such as driver observation and station staff on duty before closing the doors. On the lines of the fully automatic operation system, the platform door closing action is automatically controlled by the signal system according to the station stop time. If people or objects are caught, passive protection can only be taken afterwards. In addition, the gap detection device in the platform door system of the fully automatic operation system line mostly works in a continuous scanning mode, or scanning after the platform door is closed, or scanning when there is a car. For the working mode of starting the gap detection after the platform door is closed and when there is a train, if a foreign object or a person falls or is squeezed into the gap between the car door and the platform door, the system will still execute the operation of closing the car door and the platform door first, and can only issue an alarm after passively detecting the foreign object, at which time the person may have been injured. In addition, the current platform door control system and the train control system control interface must first be interfaced with the trackside interlocking device through a relay circuit, and the trackside interlocking device then forwards the platform door signal to the train control system wirelessly. The platform door information includes the gap detection information. This interface method has a long waiting time for the additional equipment to respond during each station stop and door opening.

[0003] Chinese patent, publication number: CN116039712A, publication date: May 2, 2023, discloses a platform gap detection control method and device, by receiving a start detection command sent by an on-board signal system, wherein the train marshaling type to which the on-board signal system belongs includes a first marshaling type and a second marshaling type, and the on-board signal system sends a start detection command corresponding to the marshaling type of the train to which it belongs; when the start detection command is a command to start the first marshaling type detection, an instruction to start the first marshaling type detection is sent to the gap detection system, and when the start detection command is sent, an instruction to start the first marshaling type detection is sent to the gap detection system. When the command is to start the second marshaling type detection command, an instruction to start the second marshaling type detection is sent to the gap detection system; the detection result timing is started, and when no obstacle detection information is received from the gap detection system after the preset time, a no obstacle information is sent to the on-board signal system. However, the gap detection working mode is only started after the platform door is closed and when there is a car. If a foreign object or a person falls into or is squeezed into the gap between the car door and the platform door, the system will still execute the operation of closing the car door and the platform door first, and can only issue an alarm after passively detecting a foreign object, which has low safety. Summary of the invention

[0004] The present invention aims at the problem that the existing platform door will still first execute the operation of closing the train door and the platform door when a foreign object or a person falls into or is squeezed into the gap between the train door and the platform door, resulting in low operating safety of the platform door. A control method for a platform door gap detection device is provided. When the train is in the automatic driving mode, the gap detection device is controlled to perform a first detection of the platform door gap before the platform door closes. When the detection result is normal, the platform door closing action is performed to ensure that when a foreign object or a person falls into or is squeezed into the gap between the train door and the platform door, the platform door will not threaten the safety of the personnel and damage the platform door because the platform door has been closed. When the platform door is closed, the platform door gap is detected for a second time. When the second detection result is also normal, the platform door gap detection device is closed, thereby avoiding the gap detection device from working ineffectively and improving the operation efficiency.

[0005] In a first aspect, a technical solution provided in an embodiment of the present invention is: a control method of a platform door gap detection device, comprising the following steps: S1. Detect whether the train is in automatic driving mode. If so, generate a gap detection start command based on the safe parking principle; S2, the gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index; S3, generating a platform door control instruction based on the comparison result, the platform door executes a corresponding action in response to the platform door control instruction and generates an execution status bit, and synchronously, the gap detection device performs gap detection on the platform door to obtain a second detection result; S4. Detect the interlocking status of the platform door. If the execution status bit of the platform door is consistent with the interlocking status of the platform door and the second detection result meets the set index, send a gap detection closing command to control the gap detection device to end the gap detection action.

[0006] In this solution, after the train stops in the automatic driving mode and passengers are getting on and off the train, before the platform door is closed, the gap detection is first performed on the platform door, and the platform door is closed only after ensuring that there is no foreign object in the gap. By detecting the gap between the car door and the platform door in advance and confirming that there is no foreign object intrusion, the car door and the platform door are closed, which can actively avoid the situation of people or objects being caught in the door closing process and avoid injuries caused by people being trapped in the gap between the car door and the platform door. At the same time, after the gap detection device closes the car door and the platform door after confirming that there is no foreign object, if the gap detection device still does not detect any foreign object, it can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying the system design and improving operational efficiency.

[0007] Preferably, in S1, detecting whether the train is in automatic driving mode, and if so, generating a gap detection start command based on a safe parking principle, including the following steps: When the train enters the platform in automatic driving mode, the deviation distance between the train and the platform is detected. If the deviation distance is less than the set threshold, it is detected whether the platform door is open. If so, a gap detection start command is generated.

[0008] In this scheme, in order to ensure that the gap detection device can work normally, the status of the train entering the platform is checked before starting the gap detection device, such as checking whether the train and platform marks are aligned, whether the car doors and platform doors are open. When the above conditions are met, the gap detection device is started to perform detection work, which can effectively eliminate the influence of the platform door's own factors on the gap detection, thereby improving the reliability of the gap detection results.

[0009] Preferably, in S2, the gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index, including the following steps: The gap detection device transmits a detection signal based on the gap detection start command and records the transmission time. Synchronously, the detection signal is detected and reflected to the gap detection device after touching the object. A first detection result is generated based on the time difference between the transmission time and the reception time, and the first detection result is compared with the set index.

[0010] In this solution, by recording the transmission time and reception time of the detection signal and calculating the time difference between the two, the round-trip distance between the detection signal and the object is accurately measured, and the first detection result is generated in real time, which means that the system can respond to the gap state immediately, which helps to respond to abnormal conditions in a timely manner, thereby ensuring passenger safety and train operation efficiency; if the detection signal fails to return as expected or the time difference is abnormal, the system may be able to detect potential faults or abnormal conditions, which helps to take timely measures to prevent accidents and ensure the safety of passengers and trains.

[0011] Preferably, in S3, a platform door control instruction is generated based on the comparison result, and the platform door performs a corresponding action in response to the platform door control instruction and generates an execution status bit, including the following steps: If the first detection result does not meet the set index, it is determined that there is a foreign object in the platform door gap, and an alarm signal and a platform door maintenance instruction are generated, and the abnormal state is assigned to the execution state bit; If the first detection result meets the set index, it is determined that there is no foreign matter in the platform door gap, and a platform door closing instruction is generated, and the door closing state is assigned to the execution state bit.

[0012] In this solution, through the determination of the first detection result, the system can quickly identify whether there is a foreign object in the gap of the platform door. Once a foreign object is found, an alarm signal is immediately generated, which helps to promptly remind staff or passengers to pay attention to safety and prevent safety accidents such as pinching people or objects caused by foreign objects; after confirming that there is no foreign object in the gap of the platform door, the system will generate a platform door closing instruction, avoiding the platform door starting the train when it is not completely closed due to misoperation or negligence, thereby improving the safety of train operation; the system assigns the abnormal state or door closing state to the execution state bit, which helps the system to track and record the status of the platform door in real time. When a fault or abnormal situation occurs, the system can quickly provide accurate feedback information to facilitate staff to troubleshoot and repair the fault.

[0013] Preferably, the platform door maintenance instruction controls the platform door to maintain a current state unchanged.

[0014] In this solution, the platform door maintenance instruction is used to ensure that the platform door will not close when a foreign object is found in the gap, playing a restrictive role to ensure the personal safety of passengers.

[0015] Preferably, in S4, the platform door interlocking state is detected. If the execution state bit of the platform door is consistent with the platform door interlocking state, and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action, including the following steps: If the platform door interlocking state is closed and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action; If the platform door interlock status is open, an alarm signal will be issued.

[0016] In this scheme, since the platform doors will be locked after opening and closing to ensure that the platform doors will not open or close by themselves due to different train operating conditions when the train is running, it is used to restrict the platform doors. Therefore, after the platform doors execute the closing action, not only the action form of the platform doors must be detected, but also the interlocking status of the platform doors after the action is completed must be detected to ensure that the platform doors have completely completed the corresponding action. If the platform door executes the closing action but the interlocking status is open, it means that the closing action is not completely executed and there is a risk of the platform door opening accidentally. It needs to be troubleshooted to further ensure the safety of train operation.

[0017] Preferably, the alarm signal includes at least the platform door number of the gap detection abnormality and the platform door number of the execution status bit inconsistent with the platform door interlocking status.

[0018] In this solution, the alarm signal is used to mark abnormal platform doors, which helps staff quickly locate the fault location and type, thereby reducing the operation interruption time caused by the fault and ensuring the passenger riding experience.

[0019] In a second aspect, a technical solution provided in an embodiment of the present invention is: a platform door gap detection device control system, including an on-board controller, a platform door controller, a gap detection device and an automatic train monitoring system; The onboard controller receives train monitoring information sent by the train automatic monitoring system through wireless communication and determines the train driving mode. If the train is in automatic driving mode, a gap detection start command is generated based on the safe parking principle and sent to the platform door controller; The platform door controller responds to the gap detection start command and performs gap detection through hard-line control of the gap detection device to obtain a detection result. The on-board controller generates a platform door control instruction based on the detection result. The platform door controller responds to the platform door control instruction to control the platform door to perform a corresponding action.

[0020] In this solution, the system can detect the gap between the train and the platform door in real time through the gap detection device. Especially in the automatic driving mode, the system can automatically generate a gap detection start command based on the principle of safe parking to ensure that the gap between the train and the platform door is within a safe range, thereby greatly reducing the risk of accidents caused by passengers entering the gap by mistake; the system realizes the rapid transmission and response of information through a combination of wireless communication and hard-line control. When the train enters the automatic driving mode and needs to start the gap detection, the on-board controller can quickly generate and send the gap detection start command, and the platform door controller can also quickly respond and control the gap detection device for detection, thereby ensuring that the system can make correct judgments and actions in the shortest time.

[0021] Preferably, after the platform door performs the corresponding action, the platform door controller controls the gap detection device to perform gap detection. Synchronously, the platform door controller detects the interlocking state of the platform door. If the interlocking state of the platform door is consistent with the state after performing the corresponding action and there is no abnormality in the gap detection result, the gap detection device is closed.

[0022] In this solution, after the gap detection device confirms that there are no foreign objects, the door closing and platform door closing operation is completed. If the gap detection device still does not detect any foreign objects, the gap detection device start-up command can be stopped immediately without waiting or delaying, thereby simplifying the system design and improving operational efficiency.

[0023] Preferably, it also includes an audible and visual alarm device, and when the platform door controller receives the gap detection start command, the audible and visual alarm device is synchronously started to prompt the door to close.

[0024] In this solution, when the platform door issues a gap detection start command, the sound and light alarm device is simultaneously activated to remind passengers that the platform door is about to close, so that passengers can predict the next action of the platform door in advance, preventing passengers from entering the train when the platform door is closing and causing safety hazards such as pinching, further maintaining passenger safety.

[0025] The beneficial effects of the present invention are as follows: the present invention detects the gap between the car door and the platform door in advance, and closes the car door and the platform door after confirming that there is no foreign object intrusion, thereby actively avoiding the situation of people or objects being caught in the door closing process, and avoiding injuries caused by people being trapped in the gap between the car door and the platform door; at the same time, after the gap detection device confirms that there is no foreign object and completes closing the car door and the platform door, if the gap detection device still does not detect any foreign object, it can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying system design and improving operational efficiency.

[0026] The above invention content is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts.

[0028] Figure 1 This is a flow chart of a control method of a platform door gap detection device of the present invention; Figure 2 It is a structural block diagram of a control system of a platform door gap detection device of the present invention; Figure 3 This is a system interaction signaling diagram of the gap detection device control system of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the drawings; the process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0031] Example 1: Figure 1 As shown, in order to solve the problem that the existing platform door still performs the operation of closing the train door and the platform door first when a foreign object or a person falls or is squeezed into the gap between the train door and the platform door, resulting in low safety of the platform door operation, this embodiment provides a platform door gap detection device control method, including the following steps: S1: Detect whether the train is in automatic driving mode. If so, generate a gap detection start command based on the safe parking principle.

[0032] In this embodiment, detecting whether the train is in automatic driving mode, and if so, generating a gap detection start command based on the safe parking principle, includes the following steps: When the train enters the platform in automatic driving mode, the deviation distance between the train and the platform is detected. If the deviation distance is less than the set threshold, it is detected whether the platform door is open. If so, a gap detection start command is generated.

[0033] In order to ensure that the gap detection device can work normally, this embodiment detects the status of the train entering the platform before starting the gap detection device, such as checking whether the train is aligned with the platform mark and whether the car door and platform door are open. When the above conditions are met, the gap detection device is started to perform detection work, which can effectively eliminate the influence of the platform door itself on the gap detection, thereby improving the reliability of the gap detection result.

[0034] S2: The gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index.

[0035] In this embodiment, the gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index, including the following steps: The gap detection device transmits a detection signal based on the gap detection start command and records the transmission time. Synchronously, the detection signal is detected and reflected to the gap detection device after touching the object. A first detection result is generated based on the time difference between the transmission time and the reception time, and the first detection result is compared with the set index.

[0036] This embodiment records the transmission time and reception time of the detection signal and calculates the time difference between the two, accurately measures the round-trip distance between the detection signal and the object, and generates a first detection result in real time, which means that the system can respond to the gap state immediately, which helps to respond to abnormal conditions in a timely manner, thereby ensuring passenger safety and train operation efficiency; if the detection signal fails to return as expected or the time difference is abnormal, the system may be able to detect potential faults or abnormal conditions, which helps to take timely measures to prevent accidents and ensure the safety of passengers and trains.

[0037] S3: Generate a platform door control instruction based on the comparison result. The platform door executes a corresponding action in response to the platform door control instruction and generates an execution status bit. Synchronously, the gap detection device performs gap detection on the platform door to obtain a second detection result.

[0038] In this embodiment, a platform door control instruction is generated based on the comparison result, and the platform door performs a corresponding action in response to the platform door control instruction and generates an execution status bit, including the following steps: If the first detection result does not meet the set index, it is determined that there is a foreign object in the platform door gap, and an alarm signal and a platform door maintenance instruction are generated, and the abnormal state is assigned to the execution state bit; If the first detection result meets the set index, it is determined that there is no foreign matter in the platform door gap, and a platform door closing instruction is generated, and the door closing state is assigned to the execution state bit.

[0039] In this embodiment, the system can quickly identify whether there is a foreign object in the gap between the platform doors by judging the first detection result. Once a foreign object is found, an alarm signal is immediately generated, which helps to promptly remind staff or passengers to pay attention to safety and prevent safety accidents such as people being pinched or objects being pinched by foreign objects; after confirming that there is no foreign object in the gap between the platform doors, the system will generate a platform door closing instruction, avoiding the train starting when the platform door is not completely closed due to misoperation or negligence, thereby improving the safety of train operation; the system assigns the abnormal state or door closing state to the execution state bit, which helps the system to track and record the status of the platform door in real time. When a fault or abnormal situation occurs, the system can quickly provide accurate feedback information to facilitate staff to troubleshoot and repair the fault.

[0040] In this embodiment, the platform door maintenance instruction controls the platform door to keep the current state unchanged.

[0041] The platform door maintenance instruction of this embodiment is used to ensure that the platform door will not execute the door closing action when a foreign object is found in the gap, which plays a limiting role to ensure the personal safety of passengers.

[0042] S4: Detect the interlocking status of the platform door. If the execution status bit of the platform door is consistent with the interlocking status of the platform door and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action.

[0043] In this embodiment, the platform door interlocking state is detected. If the execution state bit of the platform door is consistent with the platform door interlocking state, and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action, including the following steps: If the platform door interlocking state is closed and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action; If the platform door interlock status is open, an alarm signal will be issued.

[0044] In this embodiment, the platform doors will be locked after opening and closing to ensure that the platform doors will not open or close by themselves due to different train operating conditions when the train is running. Therefore, after the platform doors execute the door closing action, not only the action form executed by the platform doors but also the interlocking status after the platform doors execute the action must be detected to ensure that the platform doors have completely completed the corresponding action. If the platform doors execute the door closing action but the interlocking status is open, it means that the door closing action is not completely executed and there is a risk of the platform doors opening accidentally. It is necessary to troubleshoot the problem to further ensure the safety of the train.

[0045] In this embodiment, the alarm signal includes at least the platform door number of the gap detection abnormality and the platform door number of the execution status bit inconsistent with the platform door interlocking status.

[0046] The alarm signal of this embodiment is used to mark abnormal platform doors, which helps staff to quickly locate the fault location and type of fault, thereby reducing the operation interruption time caused by the fault, thereby ensuring the passenger riding experience.

[0047] In this embodiment, after the train stops in the automatic driving mode and passengers are getting on or off the train, before the platform door is closed, the platform door is firstly detected for gap, and the platform door is closed only after ensuring that there is no foreign object in the gap. By detecting the gap between the car door and the platform door in advance and confirming that there is no foreign object intrusion, the car door and the platform door are closed, which can actively avoid the situation of people or objects being caught in the door closing process and avoid injuries caused by people being trapped in the gap between the car door and the platform door. At the same time, after the gap detection device closes the car door and the platform door after confirming that there is no foreign object, if the gap detection device still does not detect any foreign object, it can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying the system design and improving operational efficiency.

[0048] Example 2: Figure 2 As shown, this embodiment provides a platform door gap detection device control system, including a vehicle-mounted controller, a platform door controller, a gap detection device and a train automatic monitoring system; The onboard controller receives train monitoring information sent by the train automatic monitoring system through wireless communication and determines the train driving mode. If the train is in automatic driving mode, a gap detection start command is generated based on the safe parking principle and sent to the platform door controller; The platform door controller responds to the gap detection start command and performs gap detection through hard-line control of the gap detection device to obtain a detection result. The on-board controller generates a platform door control instruction based on the detection result. The platform door controller responds to the platform door control instruction to control the platform door to perform a corresponding action.

[0049] In this embodiment, the system can detect the gap between the train and the platform door in real time through the gap detection device. In particular, in the automatic driving mode, the system can automatically generate a gap detection start command based on the principle of safe parking to ensure that the gap between the train and the platform door is within a safe range, thereby greatly reducing the risk of accidents caused by passengers entering the gap by mistake; the system realizes the rapid transmission and response of information through a combination of wireless communication and hard-line control. When the train enters the automatic driving mode and needs to start the gap detection, the on-board controller can quickly generate and send the gap detection start command, and the platform door controller can also quickly respond and control the gap detection device for detection, thereby ensuring that the system can make correct judgments and actions in the shortest time.

[0050] In this embodiment, after the platform door performs the corresponding action, the platform door controller controls the gap detection device to perform gap detection. Synchronously, the platform door controller detects the interlocking state of the platform door. If the interlocking state of the platform door is consistent with the state after performing the corresponding action and there is no abnormality in the gap detection result, the gap detection device is closed.

[0051] In this embodiment, after the gap detection device confirms that there are no foreign objects, the closing of the car doors and platform doors can be completed. If the gap detection device still does not detect any foreign objects, the gap detection device can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying the system design and improving operational efficiency.

[0052] In this embodiment, it also includes a sound and light alarm device. When the platform door controller receives the gap detection start command, the sound and light alarm device is synchronously started to prompt the door to close.

[0053] When the platform door of this embodiment issues a gap detection start command, the sound and light alarm device is simultaneously started to prompt that the platform door is about to close, so that passengers can predict the next action of the platform door in advance, preventing passengers from entering the train when the platform door is closing and causing safety hazards such as pinching, thereby further maintaining passenger safety.

[0054] like Figure 3 The figure shows the signal interaction process of the system in this embodiment during specific operation. The specific process is as follows: This embodiment can use the current on-board controller as the execution subject of the method. After checking that the vehicle has stopped steadily at the platform in the automatic driving mode, and checking that the car door and platform door are open, the on-board controller first sends a command to the platform door controller to start the gap detection device before outputting the command to close the car door and platform door. The platform door controller controls the gap detection device through the hard-wired interface and instructs the gap detection device to start scanning; the platform door controller receives the scanning result of the gap detection device through the hard-wired interface to confirm whether there are no obstacles, and the platform door controller then feeds back the result to the on-board controller through wireless. When the on-board controller receives the obstacle-free alarm information sent by the platform door controller, it outputs the command to close the car door and platform door. After the gap detection device completes the closing of the car door and platform door when confirming that there are no foreign objects, if the gap detection device still does not detect foreign objects and has received feedback that the door is closed and locked, it immediately stops outputting the command to start the gap detection device.

[0055] The existing gap detection device and its interface with the platform door controller are added with a wireless interface between the onboard controller and the platform door controller and the gap detection control information in the wireless interface information, so as to realize the control of the start / stop of the gap detection device by the train control system. At the same time, through the direct interface between the onboard controller and the platform door controller, the safety relay action time on the signal side + the response time of the platform door side interface module, the logic unit processing time and the relay action time are saved, so as to realize more effective use of the train stop operation time at each station and improve the operation efficiency.

[0056] This embodiment takes into account the situation where trains with different numbers of trains run together on a line, such as four-train and six-train trains running together. In this mixed running situation, the on-board controller generates a control instruction to start the gap detection device, and can also start the gap detection device on the corresponding platform door side according to the different numbers of trains, thereby avoiding the ineffective operation of the gap detection device in the non-boarding and alighting area.

[0057] This embodiment takes into account that the gap detection device may have false alarms during the startup process or there may be passengers getting on and off the bus. To improve feasibility and be more in line with actual operating scenarios, the platform door controller controls the platform door to give passengers an audible and visual alarm when receiving a command to start the gap detection device, prompting that the door is about to close, so as to avoid scanning normal passengers getting on and off the bus during the gap detection scan, thereby causing false alarms, affecting subsequent system processing, and affecting operational efficiency.

[0058] In this embodiment, the hard-wired interface design between the platform door controller and the gap detection device: the low level is defined as the start of gap detection, and the high level is defined as the start of no gap detection, so as to avoid the problem of being unable to control the start of the gap detection device due to interface failure. The interface definition is oriented to the safety side.

[0059] In this embodiment, the start and stop of the platform door gap detection device and the alarm processing can be divided into two categories: the first category is the normal start and stop of the gap detection device controlled by the on-board controller during the train stop operation. The second category is the alarm processing. After receiving the abnormal result of the gap detection device, the on-board controller does not output the command to close the platform door to the platform door controller, and controls not to start the train; then the controller reports the alarm information of the gap detection device detecting abnormality to the driver and the central train automatic monitoring system, which can be handled on-site by the operation arrangement personnel, and the gap detection results can also be recorded and maintained. After the personnel handle on-site, if the on-board controller receives the result of no abnormality from the gap detection device, the on-board controller outputs the command to close the platform door to the platform door controller. After receiving the feedback from the platform door controller that the platform door is closed and locked, and the detection result received from the gap detection device remains normal, the on-board controller can immediately cancel the command to start the gap detection device to the platform door controller, and the gap detection device immediately stops scanning and detecting. The train stop operation is completed, and the train can depart after checking that there is no abnormality in the platform door status.

[0060] This embodiment takes into account that the gap detection device may have false alarms during the startup process or there may be passengers getting on and off the bus. In order to improve feasibility and be more in line with actual operating scenarios, in this embodiment, the advance startup time T sent by the on-board controller to the platform door controller is flexibly set according to the stable startup time of the gap detection device and the response time of the wireless interface from the on-board controller to the platform door controller and the hard-wired interface from the platform door controller to the gap detection device to ensure that the on-board controller can receive the detection results fed back by the gap device at the same time as the door is officially closed.

[0061] In this embodiment, the vehicle-mounted controller outputs a command to start gap detection, which is only output in unmanned driving mode, only after the door is opened and T in advance of closing the door, and continuously checks the gap detection results fed back by the platform door controller until it outputs a door closing command and checks that the platform door is closed and locked as fed back by the platform door controller, then stops outputting the command.

[0062] In this embodiment, in the event of an abnormal door closing operation, i.e., when the gap detection device detects an abnormality, the system processing flow is consistent with the platform door control process under normal conditions after resolving the gap detection abnormality, and will not be repeated here.

[0063] The platform door gap detection device control method of this embodiment realizes the start control of the gap detection device through the linkage between the on-board controller and the platform door controller, and the platform door controller interfaces with the gap detection device. The gap detection is started a certain time T before the linkage closing of the car door and the platform door, and the gap detection result is included in the inspection condition of the door closing command, so as to actively avoid the risk of people or objects being caught when closing the door. The on-board controller directly interfaces with the platform door controller, which saves the action time of the safety relay on the signal side, the response time of the platform door interface module, the processing time of the logic unit, and the action time of the relay, so as to make fuller use of the stop operation time of the train at each station and improve the operation efficiency.

[0064] The beneficial effects of the present invention are as follows: the present invention detects the gap between the car door and the platform door in advance, and closes the car door and the platform door after confirming that there is no foreign object intrusion, thereby actively avoiding the situation of people or objects being caught in the door closing process, and avoiding injuries caused by people being trapped in the gap between the car door and the platform door; at the same time, after the gap detection device confirms that there is no foreign object and completes closing the car door and the platform door, if the gap detection device still does not detect any foreign object, it can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying system design and improving operational efficiency.

[0065] It can be seen from the above embodiments that at least the following substantial effects are achieved: The present invention detects the gap between the car door and the platform door in advance, and only closes the car door and the platform door when it is confirmed that there is no foreign object intrusion. This can actively avoid the situation where people or objects are caught in the door closing process, and avoid injuries caused by people being trapped in the gap between the car door and the platform door. At the same time, after the gap detection device confirms that there is no foreign object and completes closing the car door and the platform door, if the gap detection device still does not detect any foreign object, it can immediately stop outputting the command to start the gap detection device without waiting or delaying, thereby simplifying system design and improving operational efficiency.

[0066] The specific implementation described above is a preferred implementation of a platform door gap detection device control method and system of the present invention, and is not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific implementation. All equivalent changes made in accordance with the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A control method for a platform door gap detection device, characterized in that: The following steps are involved: S1. Detect whether the train is in automatic driving mode. If so, generate a gap detection start command based on the safe parking principle; S2, the gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index; S3, generating a platform door control instruction based on the comparison result, the platform door executes a corresponding action in response to the platform door control instruction and generates an execution status bit, and synchronously, the gap detection device performs gap detection on the platform door to obtain a second detection result; S4. Detect the interlocking status of the platform door. If the execution status bit of the platform door is consistent with the interlocking status of the platform door and the second detection result meets the set index, send a gap detection closing command to control the gap detection device to end the gap detection action.

2. A platform door gap detection device control method according to claim 1, characterized in that: In S1, it is detected whether the train is in automatic driving mode. If so, a gap detection start command is generated based on the safe parking principle, including the following steps: When the train enters the platform in automatic driving mode, the deviation distance between the train and the platform is detected. If the deviation distance is less than the set threshold, it is detected whether the platform door is open. If so, a gap detection start command is generated.

3. A platform door gap detection device control method according to claim 1, characterized in that: In S2, the gap detection device performs gap detection on the platform door in response to the gap detection start command to obtain a first detection result, and compares the first detection result with a set index, including the following steps: The gap detection device transmits a detection signal based on the gap detection start command and records the transmission time. Synchronously, the detection signal is detected and reflected to the gap detection device after touching the object. A first detection result is generated based on the time difference between the transmission time and the reception time, and the first detection result is compared with the set index.

4. A platform door gap detection device control method according to claim 1, characterized in that: In S3, a platform door control instruction is generated based on the comparison result, and the platform door performs a corresponding action in response to the platform door control instruction and generates an execution status bit, including the following steps: If the first detection result does not meet the set index, it is determined that there is a foreign object in the platform door gap, and an alarm signal and a platform door maintenance instruction are generated, and the abnormal state is assigned to the execution state bit; If the first detection result meets the set index, it is determined that there is no foreign matter in the platform door gap, and a platform door closing instruction is generated, and the door closing state is assigned to the execution state bit.

5. A platform door gap detection device control method according to claim 4, characterized in that: The platform door maintenance instruction controls the platform door to keep the current state unchanged.

6. A platform door gap detection device control method according to claim 1, characterized in that: In S4, the platform door interlocking state is detected. If the execution state bit of the platform door is consistent with the platform door interlocking state, and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action, including the following steps: If the platform door interlocking state is closed and the second detection result meets the set index, a gap detection closing command is sent to control the gap detection device to end the gap detection action; If the platform door interlock status is open, an alarm signal will be issued.

7. A platform door gap detection device control method according to claim 4 or 6, characterized in that: The alarm signal includes at least the platform door number of the gap detection abnormality and the platform door number of the execution status bit inconsistent with the platform door interlocking status.

8. A platform door gap detection device control system, applicable to a platform door gap detection device control method according to any one of claims 1 to 7, characterized in that: It includes on-board controller, platform door controller, gap detection device and automatic train monitoring system; The onboard controller receives train monitoring information sent by the train automatic monitoring system through wireless communication and determines the train driving mode. If the train is in automatic driving mode, a gap detection start command is generated based on the safe parking principle and sent to the platform door controller; The platform door controller responds to the gap detection start command and performs gap detection through hard-line control of the gap detection device to obtain a detection result. The on-board controller generates a platform door control instruction based on the detection result. The platform door controller responds to the platform door control instruction to control the platform door to perform a corresponding action.

9. A platform door gap detection device control system according to claim 8, characterized in that: After the platform door performs the corresponding action, the platform door controller controls the gap detection device to perform gap detection. Synchronously, the platform door controller detects the interlocking state of the platform door. If the interlocking state of the platform door is consistent with the state after performing the corresponding action and there is no abnormality in the gap detection result, the gap detection device is closed.

10. A platform door gap detection device control system according to claim 8, characterized in that: It also includes an audible and visual alarm device. When the platform door controller receives a gap detection start command, the audible and visual alarm device is synchronously started to prompt the door to close.

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