Method for recognizing door leaf abnormity based on door plate state and door leaf monitoring system

Abstract

A door leaf abnormity identification method based on a door plate state and a door leaf monitoring system relate to the field of door leaf detection, and the method comprises the following steps: determining whether a vehicle door is locked in place based on a motor encoder, a door in-place switch and a lock in-place switch; when it is judged that locking is in place, the state of the door leaf monitoring switch is monitored, and the door leaf monitoring switch is used for monitoring the state of the door leaf; if the vehicle door is locked in place and the door leaf monitoring switch is in a non-closed state, judging that the door leaf state of the door leaf is an abnormal state; and when the door leaf state is an abnormal state, generating a door leaf abnormal fault record based on the abnormal state, and sending the door leaf abnormal fault record to the first client. By implementing the method, the reliability of subway door detection can be improved.

Description

Technical Field

[0001] The present application relates to the field of door leaf detection, and in particular to a method for identifying door leaf abnormalities based on door panel status and a door leaf monitoring system. Background Art

[0002] With the rapid development of urban rail transit, the safety, reliability and reliability of subway door systems have received more and more attention. As an important passage for passengers to get on and off the train, the normal operation of subway doors is directly related to the safety of passengers and the normal operation of trains.

[0003] At present, common subway door monitoring systems usually use multiple switch signals to detect the status of the door leaf. The system uses these switch status signals to determine whether the door is closed and locked normally.

[0004] However, relying solely on the switch signal may not fully reflect the actual status of the door leaf. In some cases, even if the switch signal shows that the door has been closed normally, the door leaf may still have potential safety hazards. For example, the door leaf may be slightly deformed by external forces, or there may be foreign objects blocking the door frame and the door leaf. These situations cannot be detected by traditional switch signals, resulting in risks in subway door detection. Summary of the invention

[0005] The present application provides a method for identifying door leaf abnormalities based on door panel status and a door leaf monitoring system, which are used to improve the reliability of subway door detection.

[0006] In the first aspect, the present application provides a method for identifying door leaf abnormalities based on door panel status, which is applied to a door leaf monitoring system, wherein the door leaf monitoring system includes a door leaf, a door in place switch, a lock in place switch, a door leaf monitoring switch and a motor encoder, and the method includes: judging whether a vehicle door is locked in place based on the motor encoder, the door in place switch and the lock in place switch; when it is judged that the door is locked in place, monitoring the status of the door leaf monitoring switch, which is used to monitor the door leaf status; if the vehicle door is locked in place and the door leaf monitoring switch is in a non-closed state, judging that the door leaf status of the door leaf is an abnormal state; when the door leaf status is an abnormal state, generating a door leaf abnormal fault record based on the abnormal state and sending it to a first client.

[0007] By adopting the above technical solution, based on the motor encoder, the door in place switch and the lock in place switch, it is possible to combine the information of multiple sensors to accurately determine the actual state of the door. When it is determined that the door is in place, the state of the door leaf monitoring switch is monitored. If the door is in place and the door leaf monitoring switch is in a non-closed state, it is determined that the door leaf state is abnormal. If the door is not in place and the door leaf monitoring switch is in a closed state, it is determined that the door leaf state is normal. The abnormal state of the door leaf can be accurately identified, and the misjudgment that may be caused by relying solely on a single switch signal can be avoided, thereby improving the reliability of subway door detection.

[0008] In combination with some embodiments of the first aspect, in some embodiments, the step of determining whether the vehicle door is locked in place based on the motor encoder, the door in place switch and the lock in place switch specifically includes: detecting the door in place switch, the lock in place switch and the motor encoder to obtain the door in place switch state, the lock in place switch state and the motor encoder value. The door in place switch state includes a trigger state and a release state, and the lock in place switch state includes a trigger state and a release state; if the door in place switch state is in the trigger state, the lock in place switch is in the trigger state and the motor encoder value is less than a preset value threshold, then it is determined that the door is locked in place; if the door in place switch state is in the release state or the lock in place switch is in the release state, or the motor encoder value is less than the preset value threshold, then it is determined that the door is not locked in place.

[0009] By adopting the above technical solution, the door in place switch, lock in place switch and motor encoder are comprehensively tested to accurately determine whether the door is locked in place. The status of the door in place switch and lock in place switch reflects the mechanical position of the door, and the motor encoder value provides more accurate door position information. By comparing and judging the preset numerical threshold with these states and values, the locking state of the door can be accurately determined, which helps to improve the reliability of the door system, ensure that the door can operate safely when locked in place, and avoid safety hazards that may be caused by inadequate locking.

[0010] In combination with some embodiments of the first aspect, in some embodiments, if the door is in place switch state is in a released state or the lock is in place switch is in a released state, or the motor encoder value is less than a preset value threshold, then after the step of judging that the door is not in place, the method also includes: monitoring the motor encoder value, when it is detected that the door leaf starts to move, judging that the door leaf is in a fast closing stage, and adjusting the output power to a first output power; when the motor encoder value reaches a preset slow closing threshold, judging that the door leaf is in a slow closing stage, and adjusting the output power to a second output power.

[0011] By adopting the above technical solution, segmented control of the door leaf closing process is achieved based on the monitoring of the motor encoder value. When the door leaf starts to move, it is judged as the fast closing stage and the output power is adjusted to the first output power, which helps to improve the door closing efficiency. When the motor encoder value reaches the preset slow closing threshold, it is judged as the slow closing stage and the output power is adjusted to the second output power, which can ensure the smoothness of the closing process and reduce the impact on passengers. It makes full use of the real-time feedback information of the motor encoder and realizes precise control of the door leaf movement.

[0012] In combination with some embodiments of the first aspect, in some embodiments, before the step of determining whether the door is locked in place based on the motor encoder, the door in place switch and the lock in place switch, the method also includes: sending a preset first installation instruction to a preset client, the preset first installation instruction is a switch bracket installation instruction; after receiving the installation completion instruction, continuing to detect the position of the switch bracket, and if the switch bracket position is not in the preset position, sending a first prompt message to the preset client.

[0013] By adopting the above technical solution, a preset first installation instruction is sent to a preset client to ensure the correct installation of the switch bracket. After receiving the installation completion instruction, the position of the switch bracket continues to be detected. If it is not in the preset position, a prompt message is sent to the client. The accurate installation of the switch bracket provides a basis for the normal operation of subsequent door leaf monitoring switches and other components, so that the door leaf monitoring system can operate more stably, thereby improving the reliability of door leaf status detection, effectively avoiding detection errors caused by improper installation of the switch bracket, and ensuring the safe locking and normal operation of the door.

[0014] In combination with some embodiments of the first aspect, in some embodiments, before the step of determining whether the door is locked in place based on the motor encoder, the door in place switch and the lock in place switch, the method also includes: sending a preset second installation instruction to the preset client, the preset second installation instruction being an instruction for adjusting the distance between the door leaf monitoring switch and the door leaf; after receiving the distance adjustment completion instruction, detecting whether the door leaf monitoring switch is in a triggered state when the door leaf is closed, and whether the door leaf monitoring switch is in a released state when the door leaf leaves the locked position; if not, sending a second prompt message to the preset client.

[0015] By adopting the above technical solution, a preset second installation instruction is sent to the preset client to guide the adjustment of the distance between the door leaf monitoring switch and the door leaf. After receiving the distance adjustment completion instruction, it is detected whether the state of the door leaf monitoring switch meets the requirements when the door leaf is closed and leaves the locked position. If not, a prompt message is sent to the client. Such steps ensure that the door leaf monitoring switch can accurately feedback the state of the door leaf, so that the door leaf monitoring system can detect abnormal conditions of the door leaf in a timely and accurate manner, improve the sensitivity and accuracy of the system, and enhance the safety, reliability and reliability of the door system.

[0016] In combination with some embodiments of the first aspect, in some embodiments, when the door leaf state is an abnormal state, after the step of generating a door leaf abnormal fault record based on the abnormal state and sending it to the client, when the door leaf state is an abnormal state, the fault information of the door leaf is updated to a preset fault bit; and the preset fault bit is sent to the first client.

[0017] By adopting the above technical solution, when the door leaf is in an abnormal state, the fault information of the door leaf is updated to a preset fault position, and the preset fault position is sent to the first client. This enables relevant personnel to obtain the fault information of the door leaf in a timely and accurate manner, so as to quickly take corresponding maintenance measures and reduce the impact of the fault on the normal operation of the door. Timely updating and sending fault position information helps to improve maintenance efficiency.

[0018] In combination with some embodiments of the first aspect, in some embodiments, the door leaf monitoring switch includes a contact switch and a non-contact switch.

[0019] By adopting the above technical solutions, the detection accuracy and system adaptability are improved by including contact and non-contact switches. Non-contact switches reduce wear interference and extend life, and contact switches can be used for supplementary verification. It can adapt to different environments and cost requirements, ensure accurate monitoring of subway doors under various conditions, and enhance the overall performance and flexibility of the system.

[0020] In a second aspect, an embodiment of the present application provides a door leaf monitoring system, which includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the door leaf monitoring system to execute the method described in the first aspect and any possible implementation method of the first aspect.

[0021] In a third aspect, an embodiment of the present application provides a computer program product comprising instructions, and when the above-mentioned computer program product is run on a door leaf monitoring system, the above-mentioned door leaf monitoring system executes the method described in the first aspect and any possible implementation method of the first aspect.

[0022] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising instructions. When the instructions are executed on a door leaf monitoring system, the door leaf monitoring system executes the method described in the first aspect and any possible implementation method of the first aspect.

[0023] It can be understood that the door leaf monitoring system provided in the second aspect, the computer program product provided in the third aspect, and the computer storage medium provided in the fourth aspect are all used to execute the method provided in the embodiment of the present application. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, and will not be repeated here.

[0024] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. This application determines whether the door is locked based on the motor encoder, the door position switch and the lock position switch, and can integrate the information of multiple sensors to accurately determine the actual state of the door. When it is determined that the door is locked, the state of the door leaf monitoring switch is monitored. If the door is locked and the door leaf monitoring switch is in a non-closed state, the door leaf state is determined to be abnormal. If the door is not locked and the door leaf monitoring switch is in a closed state, the door leaf state is determined to be normal. The abnormal state of the door leaf can be accurately identified, and the misjudgment that may be caused by relying solely on a single switch signal can be avoided, thereby improving the reliability of subway door detection. 2. This application can accurately determine whether the door is locked by performing comprehensive detection on the door in place switch, lock in place switch and motor encoder. The status of the door in place switch and lock in place switch reflects the mechanical position of the door, and the motor encoder value provides more accurate door position information. By comparing and judging the preset numerical threshold with these states and values, the locking state of the door can be accurately determined, which helps to improve the reliability of the door system, ensure that the door can operate safely when locked, and avoid potential safety hazards caused by inadequate locking.

[0025] 3. This application realizes segmented control of the door leaf closing process by monitoring the motor encoder value. When the door leaf starts to move, it is judged as the fast closing stage and the output power is adjusted to the first output power, which helps to improve the door closing efficiency. When the motor encoder value reaches the preset slow closing threshold, it is judged as the slow closing stage and the output power is adjusted to the second output power, which can ensure the smoothness of the closing process and reduce the impact on passengers. It makes full use of the real-time feedback information of the motor encoder and realizes precise control of the door leaf movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of a method for identifying door leaf abnormality based on door panel status in an embodiment of the present application; Figure 2 is a three-dimensional schematic diagram of a door leaf monitoring switch in a method for identifying door leaf abnormality based on a door panel state in an embodiment of the present application; Figure 3 is another flow chart of the method for identifying door leaf abnormality based on door panel status in an embodiment of the present application; Figure 4 It is a wiring diagram of a method for identifying door leaf abnormality based on door panel status in an embodiment of the present application; Figure 5 It is a schematic diagram of the structure of a physical device of a door leaf monitoring system in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification of the present application, the singular expressions "one", "a kind of", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to any or all possible combinations comprising one or more of the listed items.

[0028] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0029] The following is a description of the process of the method provided by this implementation. Figure 1 , which is a flow chart of a method for identifying door leaf abnormalities based on door panel status in an embodiment of the present application.

[0030] S101, judging whether the vehicle door is locked in place based on the motor encoder, the door in place switch and the lock in place switch.

[0031] Among them, the motor encoder refers to a device used to measure and record the rotational position, speed or acceleration of the motor. The door position switch refers to a switch device installed on the door frame to detect whether the door leaf has reached the predetermined closing position. The lock position switch is a switch device used to detect whether the door lock is fully closed. The door lock position refers to the state where the door is fully closed and locked.

[0032] Specifically, the system will simultaneously check the value of the motor encoder, the status of the door position switch and the lock position switch. By comprehensively analyzing the information of these three components, the system can accurately determine whether the door is truly fully closed and locked, thereby ensuring the safety and reliability of the door.

[0033] In some embodiments, this judgment process can be implemented in a variety of ways: Optionally, the system first reads the value of the motor encoder to confirm whether it reaches the preset closed position threshold; then checks the state of the door in place switch to confirm whether it is triggered; and finally checks the state of the lock in place switch to confirm whether the door lock is in place. Only when these three conditions are met at the same time, the door is determined to be locked in place. Optionally, the system can set a timing detection process, first detect whether the door in place switch is triggered, then detect whether the lock in place switch is triggered within a predetermined time, and finally confirm whether the motor encoder value is within the allowable range.

[0034] S102. When it is determined that the door is locked, the state of the door leaf monitoring switch is monitored. The door leaf monitoring switch is used to monitor the state of the door leaf. The door leaf monitoring switch includes a contact switch and a non-contact switch.

[0035] The door leaf monitoring switch refers to a switch device specially used to monitor the state of the door leaf, which is usually installed on the door leaf or door frame. Locking in place refers to the state that the door has been completely closed and locked. The door leaf monitoring switch includes a contact switch and a non-contact switch. The contact switch mainly realizes the conduction and disconnection function of the circuit through the contact of its internal contacts. The non-contact switch specifically includes a reed magnetic switch, an inductive proximity switch and a Hall effect switch.

[0036] Specifically, the system will continuously read the status signal of the door leaf monitoring switch. This process is not just a one-time check, but a continuous monitoring process. The system will obtain the status information of the door leaf monitoring switch regularly or in real time to detect possible abnormal situations in time.

[0037] If the door leaf monitoring switch is a contact switch, when the door leaf is in a specific position or a specific action occurs, the contact points of the contact switch will be contacted or separated, thereby changing the circuit state and providing the system with a signal about the position or state of the door leaf. For example, when the door leaf is closed to a certain extent, the contact points of the contact switch may be triggered to close, letting the system know that the door leaf has approached or reached a certain position; and when the door leaf leaves this position, the contact points separate, the circuit state changes, and the system judges the state change of the door leaf based on this.

[0038] like Figure 2 The following is a three-dimensional schematic diagram of the door leaf monitoring switch. Figure 2In the embodiment, the bracket of the door leaf monitoring switch is installed on the door column, close to the door leaf, for installing and fixing the switch. The door leaf monitoring switch adopts a reed magnetic switch, which is located at the lower part of the door leaf and is designed to detect the closed and open states of the door leaf. Its working principle is to open and close under the influence of a magnetic field. It also includes connectors, bolts or hinge parts connecting various components. When the door leaf monitoring switch is a non-contact switch, when the door leaf is closed and locked, the magnet on the door lock mechanism or the door leaf approaches the reed magnetic switch, so that the reed is attracted and the switch is in a triggered (closed) state. By detecting the closing signal of the reed magnetic switch, combined with the triggering state of the door in place switch and the lock in place switch and the value of the motor encoder (to determine whether the door leaf has reached the preset closed position), it is comprehensively determined that the door leaf has been normally closed and locked. When the door leaf leaves the locked position, the magnetic field changes, the reed of the reed magnetic switch returns to its original state, and the switch is in a released (non-closed) state. The system monitors the state changes of the reed magnetic switch in real time. Once it detects that it changes from closed to open, and combines other sensor information (such as the state changes of the door reach switch and the lock reach switch), it can determine whether the door leaf is opened abnormally.

[0039] The door leaf monitoring switch is a switch installed at the bottom of the left and right door leaves of the train. It is used to monitor whether the door leaf is in place. It uses the normally open contacts of the reed magnetic switch and is connected to the terminal row points. When the door leaf is closed and locked, the switch should be in the triggered state. When the door leaf leaves the locked position, the switch should be in the released state. The magnetic attraction can detect whether the door leaf is in the correct closed state. When the door leaf is closed in place, the magnet approaches the reed switch, causing the reed to be attracted, thereby sending a "door closed" signal.

[0040] It should be noted that the contact switch mainly realizes the conduction or disconnection of the circuit through the contact of the contacts. Due to the frequent opening and closing of the subway door leaf, the contacts of the contact switch will constantly contact and separate, which is prone to mechanical wear. Long-term wear will cause the contact surface to be uneven, oxidized or ablated, which will in turn affect the contact performance of the contacts, increase the on-resistance of the switch, and even cause poor contact, which will lead to errors in the door leaf status detection.

[0041] The non-contact switch uses the principles of electromagnetic induction, photoelectric effect, Hall effect, etc. to detect the state of the object and control the circuit without direct contact with the detected object. The reed magnetic switch used in this embodiment belongs to the electromagnetic induction non-contact switch, which is composed of two or more magnetic reeds encapsulated in a glass tube. When the external magnetic field approaches, the reeds are magnetized and attract each other to close the switch; when the magnetic field disappears or weakens, the reeds return to their original state and the switch is disconnected.

[0042] It should be noted that the contactless door leaf monitoring switch avoids the impact of wear and deformation caused by contact on the detection results. After long-term use, traditional contact switches may suffer from poor contact due to mechanical wear, thereby misjudging the door leaf status. This non-contact switch can detect the door leaf status more stably and improve the accuracy of door leaf status detection. Since it does not require direct contact with the door leaf, it reduces the risk of failure caused by external factors (such as dust, foreign matter, etc.) interfering with the contact point, and has no contact wear, so its service life is relatively long. The contact part of the contact switch is easily damaged due to frequent opening and closing actions and needs to be replaced regularly. The non-contact switch can reduce this maintenance cost and reduce the possibility of door leaf abnormalities not being detected in time due to switch failure.

[0043] S103: If the vehicle door is locked and the door leaf monitoring switch is in a non-closed state, it is determined that the door leaf state of the door leaf is abnormal.

[0044] If the vehicle door is not locked and the door leaf monitoring switch is in a closed state, it is determined that the door leaf state is normal.

[0045] Among them, the door lock in place means that the door is completely closed and locked. The door leaf monitoring switch refers to a specific switch device used to detect the position and status of the door leaf. After the door leaf is closed and locked, the switch should be in the triggered (closed) state, and when the door leaf leaves the locked position, the switch should be in the released (non-closed) state.

[0046] The system determines the door status based on the combination of the door lock status and the door monitoring switch status. The system determines whether the door is locked by the motor encoder value, the door in-position switch trigger status, and the lock in-position switch trigger status. If the door in-position switch is triggered, the lock in-position switch is triggered, and the motor encoder value is within the preset range, the door is determined to be locked.

[0047] If the door is detected to be locked in place (judged by the motor encoder, door in place switch and lock in place switch), and the door leaf monitoring switch is in a non-closed state, it is judged that the door leaf state is abnormal, indicating that although the door control system judges that the door is locked, the door leaf may not actually be in place, which poses a safety hazard. If the door is detected to be not locked in place, and the door leaf monitoring switch is in a closed state, it is judged that the door leaf state is normal. This happens when the door is in the process of closing, the door leaf has contacted the monitoring switch to close it, but it has not been completely locked.

[0048] Other status combinations (such as the door is fully locked and the door leaf monitoring switch is closed, or the door is not fully locked and the door leaf monitoring switch is not closed) are also considered normal states.

[0049] S104: When the door leaf state is an abnormal state, generate a door leaf abnormal fault record based on the abnormal state and send it to the first client.

[0050] The abnormal state indicates that the working state of the door leaf does not meet expectations or there are potential problems. The abnormal fault record of the door leaf refers to a data record containing detailed information of the abnormal state. The first client refers to a terminal device or system that receives the abnormal fault record, which is usually a device used by a monitoring center or maintenance personnel.

[0051] Specifically, the system first generates a detailed fault record based on the detected abnormal state. This record usually includes information such as the time when the abnormality occurred, the specific abnormality type, and related sensor data. Then, the system sends this fault record to a pre-set first client via the network or other communication methods.

[0052] In some embodiments, the generation and sending of abnormal fault records can be achieved in a variety of ways: Optionally, the system can set an abnormal state coding table to map different types of abnormal states to specific fault codes. First, the system searches for the corresponding fault code based on the detected abnormal state; then, the system collects relevant environmental data and sensor readings; finally, the system packages the fault code, timestamp, and collected data into a structured fault record, and sends it to the first client through a preset communication protocol. Optionally, the system can use real-time logging and push methods. The system continuously records the working status of the door leaf, and when an abnormality is detected, it immediately marks the event in the log; then, the system extracts log records for a period of time before and after the abnormality occurs; finally, the system pushes this log record containing contextual information to the monitoring interface of the first client in real time. It is understandable that other methods can also be used, which are not limited here.

[0053] The following is a more detailed description of the process of the method provided by this implementation. Figure 2 , is another flow chart of the method for identifying door leaf abnormality based on door panel status in an embodiment of the present application.

[0054] S301, sending a preset first installation instruction to a preset client, where the preset first installation instruction is a switch bracket installation instruction.

[0055] The preset first installation instruction is a set of detailed instructions predefined by the system to guide the installation of the switch bracket. The switch bracket is a specially designed structural component used to fix and support switch devices such as door-in-place switches and lock-in-place switches on the left and right door columns. The preset client refers to a pre-set terminal device that receives installation instructions, usually a handheld device or workstation used by installation technicians.

[0056] Specifically, the system first generates a preset first installation instruction containing switch bracket installation instructions. These instructions specifically include: the position description of the switch bracket on the left and right door columns, the method of fixing with the two mounting bolts of the original rotating column lower support, and the specific operation steps for installing the switch bracket (with switch) in place. The system sends these instructions to the preset client device through the network or other communication methods. The implementation method can be: the system encodes the installation instructions into a standardized data packet and sends it to the specified address of the client through a secure network protocol (such as HTTPS).

[0057] S302: After receiving the installation completion instruction, continue to detect the position of the switch bracket, and if the switch bracket is not in the preset position, send a first prompt message to the preset client.

[0058] The installation completion instruction is a confirmation signal sent by the installation technician to the system through the client, indicating that the installation of the switch bracket has been completed. The preset position is the ideal installation position of the switch bracket pre-defined by the system, which takes into account the distance adjustment requirements between the switch and the door leaf. The first prompt message is a warning or correction message sent to the client by the system when it detects an abnormal position of the switch bracket.

[0059] In this step, the system first waits for and receives the installation completion instruction sent by the client. After receiving the instruction, the switch bracket position continues to be detected. The detection method can be achieved by using a laser rangefinder or visual recognition, by measuring the relative position of the switch bracket and fixed reference points such as door columns and door leaves, and comparing the detected actual position with the preset ideal position. Considering the adjustment range of the oblong hole on the switch bracket, if it is determined that the actual position exceeds the adjustable range of the preset position, a first prompt message containing specific deviation information and adjustment suggestions will be generated. This prompt message is then sent back to the preset client to guide the installer to make adjustments.

[0060] S303, sending a preset second installation instruction to the preset client, where the preset second installation instruction is an instruction for adjusting the distance between the door leaf monitoring switch and the door leaf.

[0061] The preset second installation instruction is a system-defined operation instruction for guiding the adjustment of the distance between the door leaf monitoring switch and the door leaf. The door leaf monitoring switch is a sensor device installed on the door frame or door leaf for detecting the state of the door leaf. The door leaf is a movable part of the train compartment for passengers to get on and off. The distance adjustment instruction contains the adjustment method, target distance parameters and operation precautions. The preset client is a terminal device designated to receive the installation instruction, which is a handheld device used by maintenance personnel or a control panel at the installation site.

[0062] In this step, the system generates preset second installation instructions with detailed adjustment instructions. These instructions provide methods to adjust the distance between the switch and the door leaf based on the oblong hole design of the switch bracket. The instructions point out two key adjustment goals: the switch is in the triggered state after the door leaf is closed and locked; the switch is in the released state when the door leaf leaves the locked position. The system sends these instructions to the preset client in the form of a data packet. The instructions include the following specific content: "Use a 5 mm Allen wrench to loosen the switch bracket fixing bolts, slide the switch along the oblong hole, and adjust 0.5 mm each time until the ideal position is reached. After adjustment, use a torque wrench to tighten the bolts with a torque of 5 Nm." S304, after receiving the distance adjustment completion instruction, detect whether the door monitoring switch is in a triggered state when the door is closed, and whether the door monitoring switch is in a released state when the door leaves leave the locked position.

[0063] The system waits to receive the distance adjustment completion instruction sent by the preset client. After receiving the instruction, the system starts the detection program for the door leaf monitoring switch status. The detection process is divided into two stages: the system controls the door leaf to close to the locked position, and detects the status of the door leaf monitoring switch to confirm whether it is in the triggered state. The system controls the door leaf to open slowly, and when the door leaf just leaves the locked position, it detects the status of the door leaf monitoring switch again to confirm whether it is in the released state. This detection process is achieved in the following way: the system sends a door closing instruction to the door control mechanism, and when it receives the door lock in place signal, it reads the status signal of the door leaf monitoring switch. Subsequently, the system sends a door opening instruction, and by monitoring the value of the door leaf position encoder, it reads the status signal of the door leaf monitoring switch again when the door leaf moves beyond the preset threshold.

[0064] S305: If not, send a second prompt message to the preset client.

[0065] In this step, if the system finds that the state of the door leaf monitoring switch does not meet the requirements in the detection of step S204, the system will generate a second prompt message. This message includes a description of the problem, such as "the switch is not triggered when the door leaf is closed" or "the switch is not released when the door leaf is opened", and adjustment suggestions, such as "adjust the switch 0.5 mm toward the door leaf" or "adjust the switch 0.3 mm away from the door leaf". The system sends this prompt message to the preset client to guide the maintenance personnel to make adjustments.

[0066] S306, detect the door in place switch, the lock in place switch and the motor encoder to obtain the door in place switch state, the lock in place switch state and the motor encoder value. The door in place switch state includes a trigger state and a release state, and the lock in place switch state includes a trigger state and a release state.

[0067] In this step, the system detects the status of the door in-position switch, lock in-position switch and motor encoder. For the door in-position switch and lock in-position switch, the system reads their signals to determine whether they are in the triggered state (indicating that the door is in position or the lock is in position) or the released state (indicating that the door is not in position or the lock is not in position). For the motor encoder, the system reads the value of its output, which represents the rotation angle or displacement distance of the door machine motor. The detection process can be implemented in the following ways: the system can read the status signal of the switch through the input interface and read the value of the encoder through the interface.

[0068] S307: If the door in-position switch is in a triggered state, the lock in-position switch is in a triggered state, and the motor encoder value is less than a preset value threshold, it is determined that the door is in a locked position.

[0069] The door in-place switch is a switch device installed on the door frame to detect whether the door leaf is fully closed. When the door leaf reaches the predetermined closed position, the door in-place switch is triggered and enters the triggered state. The lock in-place switch is a switch device used to detect whether the door lock is fully closed. When the door lock mechanism is fully closed, the lock in-place switch is triggered and enters the triggered state. The value of the motor encoder changes with the movement of the door leaf, so that it can accurately reflect the entire process from fully opening to fully closing of the door leaf. The preset value threshold is a reference value pre-set by the system to determine whether the door leaf has reached the expected closed position.

[0070] In this step, the system first reads the status signal of the door position switch through the digital input interface to determine whether it is in the triggered state. At the same time, the system reads the status signal of the lock position switch through another digital input interface to determine whether it is also in the triggered state. Next, read the value of the motor encoder. The system compares the obtained encoder value with the preset threshold. According to the coding rules of different door items, the logic of the system judgment is different. For example, if the code value of the closed position corresponds to 0, the system determines whether the encoder value is less than the preset threshold; if the code value of the open position corresponds to 0, the system determines whether the encoder value is greater than the preset threshold. When the following three conditions are met at the same time: the door position switch is in the triggered state, the lock position switch is in the triggered state, and the motor encoder value meets the preset conditions (less than or greater than the threshold, depending on the specific coding rules), the system determines that the door is closed and the lock is in place.

[0071] S308: If the door lock is in a released state or the lock is in a released state, or the motor encoder value is less than a preset value threshold, it is determined that the door is not locked in place.

[0072] First, the system reads the status signal of the door position switch through the digital input interface. If the signal shows that the switch is in the released state, the system will mark this situation. Then, the system reads the status signal of the lock position switch. If the signal shows that the switch is in the released state, the system will also mark it. Next, the system reads the real-time value of the motor encoder through the high-speed digital communication interface and compares it with the preset threshold. If the encoder value is greater than the preset threshold (assuming that the encoder value of the closed position corresponds to a smaller value), the system will also mark it. After completing these checks, if any of the marked conditions exists (i.e., the door position switch is released, the lock position switch is released, or the encoder value is greater than the threshold), the system will determine that the door is not fully closed and locked. As long as one condition is not met, it is determined that the door is not completely closed and locked.

[0073] S309. When it is determined that the door is locked, the state of the door leaf monitoring switch is monitored. The door leaf monitoring switch is used to monitor the state of the door leaf. The door leaf monitoring switch includes a contact switch and a non-contact switch.

[0074] It can be understood that this step is similar to step S102 and will not be described in detail here.

[0075] S310. If the vehicle door is locked and the door monitoring switch is in a non-closed state, it is determined that the door state of the door is abnormal; if the door is not locked and the door monitoring switch is in a closed state, it is determined that the door state is normal.

[0076] It can be understood that this step is similar to step S103 and will not be described in detail here.

[0077] S311. When the door leaf state is an abnormal state, a door leaf abnormal fault record is generated based on the abnormal state and sent to the first client.

[0078] It can be understood that this step is similar to step S104 and will not be described in detail here.

[0079] S312, monitoring the motor encoder value, when detecting that the door leaf starts to move, determining that the door leaf is in a fast closing stage, and adjusting the output power to the first output power.

[0080] The fast closing stage refers to the initial stage of the door leaf closing process, when the door leaf moves at a faster speed. The output power refers to the power output by the door machine motor when driving the door leaf to move. The first output power is usually a larger power value, and the first output power is greater than the second output power.

[0081] The system continuously monitors the value changes of the motor encoder through a high-speed digital communication interface. When the system detects that the encoder value begins to change significantly, it determines that the door leaf has started to move. The system then marks the door leaf status as the fast closing stage and adjusts the output power to the preset first output power level through the motor driver. The system uses PWM technology to control the power output to the motor. At the same time, the system continuously monitors the movement status of the door leaf, including speed and position. If an abnormality is detected during this process, the system triggers the corresponding alarm mechanism or makes real-time adjustments.

[0082] S313. When the motor encoder value reaches a preset slow closing threshold, it is determined that the door leaf is in a slow closing stage, and the output power is adjusted to a second output power.

[0083] The preset slow closing threshold is a motor encoder value preset by the system to identify the critical point when the door leaf switches from the fast closing stage to the slow closing stage. The slow closing stage refers to the later stage of the door leaf closing process, when the door leaf moves at a slower speed. The second output power is usually a smaller power value to achieve slow movement of the door leaf.

[0084] The system continuously monitors the value of the motor encoder. When the encoder value is detected to reach or exceed the preset slow closing threshold, the system updates the door leaf state to the slow closing stage. The system adjusts the output power to the preset second output power level through the motor driver. The system adopts a closed-loop control strategy to adjust the output power based on real-time encoder feedback so that the door leaf moves at the desired slow speed. During the slow closing stage, the system monitors the movement of the door leaf, including speed, position and possible obstacles. If an abnormal situation is detected, the system reduces the output power or triggers the mechanism for the door leaf to open in the opposite direction.

[0085] S314. After receiving the distance adjustment completion instruction, detect whether the door monitoring switch is in a triggered state when the door is closed, and whether the door monitoring switch is in a released state when the door leaves leave the locked position.

[0086] The distance adjustment completion instruction is a signal sent by maintenance personnel to the system through the preset client, indicating that the distance adjustment between the door leaf monitoring switch and the door leaf has been completed. The door leaf is a movable part of the train compartment, used for passengers to get on and off the train. The door leaf monitoring switch is a sensor device installed on the door frame or door leaf to detect the state of the door leaf. The triggered state refers to the working state when the door leaf monitoring switch is pressed or senses the door leaf approaching. The released state refers to the static state when the door leaf monitoring switch is not pressed or does not sense the door leaf approaching. The locked position refers to the position where the door leaf is completely closed and locked.

[0087] After receiving the distance adjustment completion instruction, the system starts the detection procedure for the door leaf monitoring switch status. The detection process is divided into two stages: First, the system controls the door leaf to close to the locked position, and then detects the status of the door leaf monitoring switch to confirm whether it is in the triggered state. The specific operation is that the system sends a door closing command to the door control mechanism, and when the door lock is in place signal is received, the status signal of the door leaf monitoring switch is immediately read. Secondly, the system controls the door leaf to open, and when the door leaf just leaves the locked position, the status of the door leaf monitoring switch is detected again to confirm whether it is in the released state. The implementation method is that the system sends a door opening command, and by continuously monitoring the value of the door leaf position encoder, when the door leaf moves beyond the preset threshold (such as 1 mm), the status signal of the door leaf monitoring switch is read again.

[0088] S315: When the state of the door leaf is abnormal, the fault information of the door leaf is updated to a preset fault position.

[0089] The door leaf status refers to the current working condition of the door leaf, including normal status and abnormal status. The abnormal status refers to the situation where the actual working condition of the door leaf does not meet the expected condition. The fault information is the detailed data describing the abnormal status of the door leaf. The preset fault bit is a storage area pre-defined in the system for storing door leaf fault information.

[0090] When the system detects that the door leaf state is abnormal in step S314, the system will perform a fault information update operation. The criteria for determining the abnormal state are: the door leaf monitoring switch is not in the triggered state when the door leaf is closed, or the door leaf monitoring switch is not in the released state when the door leaf leaves the locked position. Once an abnormality is detected, the system generates fault information containing a detailed fault description. The fault information includes key data such as the fault type (such as "switch trigger abnormality" or "switch release abnormality"), the time when the fault occurred, and the door leaf number. The system then writes these fault information into the preset fault bit. The preset fault bit is a special data structure or database table inside the system, which is used to centrally store and manage the fault records of all door leaves.

[0091] like Figure 4 As shown, Figure 4It is a wiring diagram of the method for identifying door leaf abnormalities based on the door panel state in an embodiment of the present application, mainly including two connectors X2 and X1. The X2 connector (left side) contains the following signals: ground output, encoder power output, pulse signals C, A, B. These signals are used to control the movement and position of the door. The X1 connector (right side) is a 16-pin connector, which contains multiple important signal lines: Pins 15-16: Door motor power switch door signal, Pins 13-14: Tilt position safety interlock circuit signal 2, Pins 11-12: Tilt position safety interlock circuit signal 1, Pins 9-10: Output DC 0V, Pins 7-8: Single door brush line, Pin 6: Door closing monitoring signal (this is a newly added key signal), Pins 1-2: Output DC 0V.

[0092] The "door closed monitoring signal" of pin 6 is directly connected to the newly installed door leaf monitoring switch to detect whether the door leaf is closed correctly. The abnormal state is detected through pin 6 (door closed monitoring signal) of the X1 connector. After receiving this abnormal signal, the door controller updates the relevant fault information to the preset fault bit. The fault information can be transmitted in one of the following ways: using the pulse signals C, A, B (pins 5, 9, 10) of the X2 connector for encoded transmission, using other unmarked pins on the X2 connector (such as 6, 7, 8) as dedicated fault information output channels, the updated fault information will be sent to the vehicle network system (TCMS) for further fault processing and display.

[0093] S316: Send the preset fault bit to the first client.

[0094] The first client is a terminal device designated to receive fault information, usually a system of a network manufacturer or a device of a monitoring center. The preset fault bit is a specific data bit in the communication protocol used to indicate the fault status of a door leaf.

[0095] After the system completes the update of the fault bit, it executes the data packet sending operation containing the updated fault bit. First, the system generates a data packet that complies with the predetermined communication protocol, which contains the updated fault bit information. Then, the system sends the data packet to the first client through the pre-configured communication network. After receiving the data packet, the first client will parse the fault bit information therein. If it is detected that the fault bit is set to "1", the client system will integrate this information into the state representation of the door abnormality.

[0096] In some embodiments, after step S316, the following steps may also be included: When the state of the door leaf is abnormal, the target camera closest to the door leaf is detected.

[0097] Abnormal status means that the actual working status of the door leaf does not match the expected status. The target camera is a video device used to monitor the door leaf and the surrounding area. The closest target camera is the camera with the shortest spatial distance to the abnormal door leaf.

[0098] When the system detects an abnormal door leaf status, it starts the process of finding the nearest target camera. The system first extracts the location information of all cameras from the camera location database. Then, the system calculates the distance between the abnormal door leaf and each camera. The calculation uses the spatial distance formula, taking into account the three-dimensional coordinates of the camera and the door leaf. The system sorts the calculated distance values ​​and selects the camera with the shortest distance as the target camera. If there are multiple nearest cameras with the same distance, the system selects the most suitable one according to the preset priority rules.

[0099] The target camera is called to shoot the door leaf to obtain the door leaf status video.

[0100] Shooting refers to the operation of the system controlling the camera to capture real-time video images. The door leaf status video is a dynamic image data that records the abnormal status of the door leaf.

[0101] After determining the target camera, the system executes the call and shooting operations. The system sends a startup instruction to the target camera through the preset communication protocol, including the shooting parameter settings. The system also sends a pan / tilt control command to adjust the camera's shooting angle and focal length. The camera starts to capture the video stream, and the system receives and processes the video stream. The processed video data is temporarily stored in the system to form a continuous video file. The system adds metadata to the video file, including shooting time, door leaf number, abnormality type and other information.

[0102] The door leaf status video is sent to the display screen of the second client for display.

[0103] The second client is a terminal device designated to receive the door status video. The display screen is an output device for displaying video content. Sending is the process of the system transmitting video data to the second client.

[0104] After the system completes recording the door status video, it performs video transmission and display operations. The system first performs necessary format conversion and data packet segmentation on the video file. Then, the system sends the video data packet to the second client through the pre-established communication channel. The sending process uses an appropriate transmission protocol to ensure that the video can be played while being transmitted. The second client receives the video data packet, reassembles it into a continuous video stream through the decoder, and renders it in real time on the display screen. During the display process, the system automatically adjusts the display parameters of the video to ensure that the video content is presented clearly and completely. At the same time, the system overlays relevant text information on the video screen.

[0105] The door leaf monitoring system in the embodiment of the present invention is described below from the perspective of hardware processing. Figure 5 , which is a schematic diagram of the structure of a physical device of a door leaf monitoring system in an embodiment of the present application.

[0106] It should be noted that Figure 5 The structure of the door leaf monitoring system shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0107] like Figure 5 As shown, the door leaf monitoring system includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method described in the above embodiment. In RAM503, various programs and data required for system operation are also stored. CPU501, ROM502 and RAM503 are connected to each other through a bus 504. Input / output (I / O) interface 505 is also connected to bus 504.

[0108] The following components are connected to the I / O interface 505: an input section 406 including an audio input device, a button switch, etc.; an output section 507 including a liquid crystal display (LCD) and an audio output device, an indicator light, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0109] In particular, according to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the present invention are performed.

[0110] It should be noted that specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus, or device.

[0111] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. Each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from that marked in the accompanying drawings.

[0112] Specifically, the door leaf monitoring system of this embodiment includes a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the method for identifying door leaf abnormalities based on the door panel status provided in the above embodiment is implemented.

[0113] As another aspect, the present invention further provides a computer-readable storage medium, which may be included in the door leaf monitoring system described in the above embodiment; or may exist independently without being assembled into the door leaf monitoring system. The above storage medium carries one or more computer programs, and when the above one or more computer programs are executed by a processor of the door leaf monitoring system, the door leaf monitoring system implements the method for identifying door leaf abnormalities based on door panel status provided in the above embodiment.

[0114] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0115] As used in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrases "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0116] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. A method for identifying door leaf abnormality based on door panel status, characterized in that: Applied to a door leaf monitoring system, the door leaf monitoring system includes a door leaf, a door in-position switch, a lock in-position switch, a door leaf monitoring switch and a motor encoder, and the method includes: Determining whether the vehicle door is locked in place based on the motor encoder, the door in place switch and the lock in place switch; When it is determined that the door is locked, the state of the door leaf monitoring switch is monitored, and the door leaf monitoring switch is used to monitor the state of the door leaf; If the vehicle door is locked in place and the door leaf monitoring switch is in a non-closed state, it is determined that the door leaf state of the door leaf is in an abnormal state; When the door leaf state is an abnormal state, a door leaf abnormal fault record is generated based on the abnormal state and sent to the first client.

2. The method according to claim 1, characterized in that The step of judging whether the vehicle door is locked in place based on the motor encoder, the door in place switch and the lock in place switch specifically includes: Detect the door in-place switch, the lock in-place switch and the motor encoder to obtain the door in-place switch state, the lock in-place switch state and the motor encoder value. The door in-place switch state includes a trigger state and a release state, and the lock in-place switch state includes a trigger state and a release state; If the door in-place switch is in a triggered state, the lock in-place switch is in a triggered state, and the motor encoder value is less than a preset value threshold, then it is determined that the door is in-place locked; If the door in-place switch is in a released state or the lock in-place switch is in a released state, or the motor encoder value is less than a preset value threshold, it is determined that the door is not in-place locked.

3. The method according to claim 2, characterized in that After the step of determining that the door is not locked in place if the door in place switch is in a released state or the lock in place switch is in a released state, or the motor encoder value is less than a preset value threshold, the method further includes: The motor encoder value is monitored, and when it is detected that the door leaf starts to move, it is determined that the door leaf is in a fast closing stage, and the output power is adjusted to the first output power; When the motor encoder value reaches a preset slow closing threshold, it is determined that the door leaf is in a slow closing stage, and the output power is adjusted to a second output power.

4. The method according to claim 1, characterized in that: Before the step of determining whether the door is locked in place based on the motor encoder, the door in place switch and the lock in place switch, the method further includes: Sending a preset first installation instruction to a preset client, wherein the preset first installation instruction is a switch bracket installation instruction; After receiving the installation completion instruction, the switch bracket position continues to be detected, and if the switch bracket position is not in the preset position, a first prompt message is sent to the preset client.

5. The method according to claim 1, characterized in that Before the step of determining whether the door is locked in place based on the motor encoder, the door in place switch and the lock in place switch, the method further includes: Sending a preset second installation instruction to a preset client, wherein the preset second installation instruction is an instruction for adjusting the distance between the door leaf monitoring switch and the door leaf; After receiving the distance adjustment completion instruction, detecting whether the door leaf monitoring switch is in a triggered state when the door leaf is closed, and whether the door leaf monitoring switch is in a released state when the door leaf leaves the locked position; If not, a second prompt message is sent to the preset client.

6. The method according to claim 2, characterized in that After the step of generating a door leaf abnormal fault record based on the abnormal state and sending it to the client when the door leaf state is an abnormal state, the method further comprises: When the door leaf is in an abnormal state, the fault information of the door leaf is updated to a preset fault position; The preset fault bit is sent to the first client.

7. The method according to claim 1, characterized in that The door leaf monitoring switch includes a contact switch and a non-contact switch.

8. A door leaf monitoring system, characterized in that: The door leaf monitoring system includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the door leaf monitoring system to execute the method described in any one of claims 1-7.

9. A computer-readable storage medium comprising instructions, characterized in that: When the instruction is executed on a door leaf monitoring system, the door leaf monitoring system is caused to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that When the computer program product runs on a door leaf monitoring system, the door leaf monitoring system is enabled to execute the method according to any one of claims 1 to 7.

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