External equipment state acquisition method

Abstract

The invention discloses an external equipment state acquisition method, which belongs to the technical field of rail transit, and comprises the following steps of: analyzing historical operation data of a train, dividing all operation states of the train, and associating different train operation states corresponding to external equipment information needing to be acquired; according to the platform door control system and the platform door control method, the current operation state of the train is determined according to the incidence relation of the platform door control system, the required acquisition units corresponding to different operation states of the train are grouped based on the incidence relation so as to obtain an acquisition template, and then the current operation state of the train is determined. The problem that the efficiency of collecting the external equipment information is reduced due to the fact that the workload of collecting the external equipment state information is increased is solved, the corresponding collecting template is directly selected to drive the corresponding collecting unit according to the current state of the train, the step of distributing the collecting units can be simplified, and therefore the efficiency of detecting the external equipment state is improved.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a method for collecting the status of an external device. Background Art

[0002] In the current subway rail transit system, the signal system and other subsystems play an important role in guiding train operations, and the various cabinets and cages have size requirements and standards, and are neat and orderly. For example, the control and operation of platform doors require the support of the platform door control system. To avoid the complicated sizes of cabinets and cages of each subsystem, it is necessary to develop in combination with the existing fully electronic interlocking 6U 180mm deep cage frame to improve the compatibility of equipment and boards. Due to the increase in the number of external device status acquisitions, the size of the current board is limited and cannot meet the functional requirements. In order to enhance the compatibility of the cabinet cage and not change the size of the board, a new interface unit acquisition solution needs to be designed to solve the problem of the complexity of the control process of the acquisition unit caused by the increase in the number of acquisition units due to the increase in the number of acquisition requirements.

[0003] Chinese Patent, Publication Number: CN112901009A, Publication Date: June 4, 2021, discloses a platform door control system and control method with emergency operation, including a central control panel, a local control panel and M serially connected door control units; an emergency device is added to the local control panel, the first output end of the emergency device is connected to the central control panel, and the second output end is connected to the adjacent door control unit; a switch unit is provided in the emergency device, when the switch unit is in the first switch state, the local control panel is connected to the central control panel through the emergency device, and when the switch unit is in the second switch state, the local control panel is connected to the adjacent door control unit through the emergency device, and sends the entire side door opening and closing instructions to the M serially connected door control units to control the entire side sliding door opening and closing. When the central control panel fails, the local control panel is directly connected to the door control unit through the emergency device to control the door control unit, but it only considers the state of the train itself, and does not consider the impact of the state of external equipment on platform door control. Summary of the invention

[0004] The present invention aims at the problem that when the existing platform door control system controls the platform door, as the number of external devices increases, the workload of collecting external device status information increases, resulting in reduced efficiency in collecting external device information. The present invention provides an external device status collection method, which analyzes the historical operation data of the train, divides all the operation states of the train, associates the external device information that needs to be collected corresponding to different train operation states, and based on the association, groups the collection units that need to be collected corresponding to different train operation states to obtain a collection template, then determines the current operation state of the train, and directly selects the corresponding collection template to drive the corresponding collection unit according to the current state of the train, which can simplify the steps of allocating the collection units, thereby improving the efficiency of detecting the state of the external device.

[0005] In a first aspect, a technical solution provided in an embodiment of the present invention is: a method for collecting status of an external device, comprising the following steps: S1. Acquire historical train operation data, and acquire a train operation state set in response to a train state analysis strategy based on the historical train operation data; S2, constructing a state association relationship based on the external device information collected corresponding to different train running states in the train running state set, grouping the collection units based on the state association relationship to obtain a state collection template, and saving the state collection template to the interface unit; S3, obtaining the current running state of the train based on the current running data of the train and selecting the corresponding state acquisition template based on the state association relationship to obtain the current external device state information; S4. The interface unit responds to the safety assessment principle with the current external device status information and the current train operation status, and controls the platform door based on the assessment result.

[0006] In this solution, by analyzing the train operation data, the possible states that may occur during the train operation are extracted, the external equipment information that needs to be collected corresponding to different train states is associated, and the collection units that need to be started are combined to construct a collection template. Different collection templates are used for different train operation states. The steps of allocating collection units can be simplified when the number of external devices is large. Only the corresponding template needs to be selected, thereby improving the efficiency of detecting the status of external devices. Through real-time monitoring and intelligent analysis of train status and external equipment information, equipment failures can be discovered and handled in time, reducing downtime and maintenance costs caused by failures. At the same time, accurate status monitoring also helps to extend the service life of equipment and reduce overall maintenance costs.

[0007] Preferably, in S1, the train historical operation data obtains a train operation state set in response to the train state analysis strategy, including the following steps: Performing position characteristic analysis and motion characteristic analysis on historical train operation data respectively to obtain position characteristic parameters and motion characteristic parameters; Based on the preset train status evaluation indicators, the position characteristic parameters and motion characteristic parameters are analyzed in different time periods to obtain the corresponding train historical status; The train historical status is deduplicated to obtain the train operation status set.

[0008] In this scheme, in order to obtain the characteristic information of different operating states of the train, the position characteristic analysis of the train is carried out to obtain the position characteristic parameters such as the driving speed between different sections and stations, the stop time and other key information, and the motion characteristic analysis of the train is then carried out to obtain the motion characteristic parameters such as the acceleration, deceleration, and stability of the train during driving, so as to more comprehensively evaluate the operating state of the train, and then the train state is quantitatively analyzed according to the above characteristic parameters to accurately identify the train state, providing a data basis for the subsequent construction of the state acquisition template.

[0009] Preferably, the train running status in the train running status set includes at least a normal moving state, a parking state and a fault state.

[0010] In this scheme, since there are many types of train operation states, in order to facilitate identification, the train operation states are mainly divided into three categories. Since the train is mainly automatically controlled by a preset control program, when the train is running based on a preset operation plan, it is in a normal moving state, when the train stops normally based on a preset empty car program, it is in a parking state, and when the train does not comply with the preset operation plan, it is in a fault state. In different states, the states of external devices that need to be detected before the control instructions of the train are issued are also different, and the acquisition units corresponding to different external devices are also different. The operation state of the train is integrated and classified, which provides convenience for the subsequent construction of the state acquisition template.

[0011] Preferably, in S2, building a state association relationship based on the external device information corresponding to different train running states collected in the train running state set includes the following steps: The external device information at least includes acquisition frame status information, comprehensive backup disk status information, local control disk status information and locking information; If the train is in a normal motion state, the acquisition frame state information and the locking information are associated to obtain a motion association relationship; If the train is in a stopped state, the locking information is associated to obtain a stop association relationship; If the train is in a fault state, the comprehensive backup panel status information and the local control panel status information are associated to obtain a fault association relationship.

[0012] In this scheme, when the train is in a fault state, the control instructions issued by the preset control program are not applicable to the current state, so manual control is required. At this time, it is necessary to collect the comprehensive backup disk status information and the local control disk status information, extract the external control instructions based on the information, and control the train according to the external control instructions, thereby improving the train's adaptability in unexpected situations, and at the same time, it can quickly locate the fault point, reduce the troubleshooting time, and improve maintenance efficiency; when the train is in a normal moving state, by collecting the acquisition frame status information and locking information, it can ensure that the relevant equipment is operating normally and is in the correct locking state, thereby ensuring that the control instructions can normally control the relevant equipment, which helps to ensure the safety of the train operation; when the train is in a parked state, it is necessary to open or close the platform door. At this time, it is necessary to collect the locking information to ensure that the relevant equipment is in the correct locking state, thereby ensuring that the platform door can be opened and closed normally, ensuring the safety of the train operation.

[0013] Preferably, in S2, grouping the collection units based on the state association relationship to obtain a state collection template includes the following steps: If the state association relationship is a motion association relationship, the acquisition units corresponding to the detection acquisition frame state information and the locking information are combined to obtain a motion acquisition template; If the state association relationship is a parking association relationship, the acquisition units corresponding to the detection locking information are combined to obtain a parking acquisition template; If the status association relationship is a fault association relationship, the acquisition units corresponding to the detection comprehensive backup disk status information and the local control disk status information are combined to obtain a fault acquisition template; The motion acquisition template, the parking acquisition template and the fault acquisition template are respectively saved to the interface unit to obtain the state acquisition template.

[0014] In this scheme, in order to quickly form a corresponding data acquisition scheme for a large number of external devices, the acquisition units required for the external device information to be collected in different train operating states are combined to obtain different acquisition templates. Each train operating state corresponds to an acquisition template. When the train is in a certain state, it is only necessary to match the acquisition template corresponding to the state, and drive the corresponding acquisition unit according to the acquisition template, which eliminates the step of organizing the external devices and simplifies the step of allocating the acquisition units, thereby improving the efficiency of detecting the state of external devices.

[0015] Preferably, in S3, obtaining the current running state of the train based on the current running data of the train and selecting a corresponding state acquisition template based on the state association relationship to obtain the current external device state information includes the following steps: Perform position feature analysis and motion feature analysis on the current running data of the train respectively to obtain current position feature parameters and high-definition motion feature parameters; Based on the train status evaluation index, the current position characteristic parameters and the current motion characteristic parameters are analyzed to obtain the current train operation status; The current train running status is matched with the status acquisition template through the status association relationship, and the corresponding acquisition unit is started based on the matching result to obtain the current external device status information.

[0016] In this solution, due to the large number of external devices, a large number of acquisition units are required. The train operation status changes in real time. Different train operation statuses require different external device information to be collected, and the number of acquisition units to be driven is also different. The step of allocating acquisition units consumes a lot of system computing power and time. Therefore, a state acquisition template is set up. According to historical data, the acquisition units that need to be driven for different train states are determined. When the train is in the corresponding operation state, it only needs to match the corresponding template to directly drive the acquisition unit. There is no need to allocate and calculate the acquisition unit separately. This greatly reduces the repeated steps during allocation and liberates the system computing power, thereby improving the stability of the system during operation, while also improving the efficiency of collecting external device status information.

[0017] Preferably, in S4, the interface unit responds to the safety assessment principle with the current external device status information and the current running status of the train, and controls the platform door based on the assessment result, including the following steps: The core unit sends control instructions to the interface unit based on control requirements, and the interface unit evaluates the status information of external devices according to the current operating status of the train; If the train is not in a fault state and the external device status information is normal, the control command is allowed to be sent to the door control unit through the interface unit; If the train is in a fault state, an emergency control instruction is generated based on the comprehensive backup disk status information and the local control disk status information in the external device status information and sent to the door control unit.

[0018] In this solution, the interface unit will evaluate the current running status of the train and the status information of the external equipment before transmitting the control command. This double check mechanism helps to ensure that the control command will be sent to the door control unit only when the train is in a safe state and the external equipment is normal, which greatly reduces the safety risks caused by equipment failure or misoperation. When the train is in a faulty state, the system can generate emergency control commands based on the comprehensive backup disk status information and the local control disk status information in the external equipment status information. This emergency handling mechanism ensures that even in the event of a fault, the system can take appropriate control measures to ensure the safety of passengers and the normal operation of the train. Through real-time evaluation of the train running status and external equipment status information, the system can intelligently allocate resources. For example, when the train is running normally and the external equipment is in normal status, the system can allow the control command to be sent to the door control unit through the interface unit, thereby realizing effective utilization of resources. In the event of a fault, the system can give priority to emergency control commands to ensure the normal operation of key equipment and optimize resource utilization.

[0019] Preferably, the interface unit is provided with at least a serial interface, an Ethernet interface, and analog and digital I / O interfaces.

[0020] In this solution, in order to improve the expansion capability of the acquisition unit, the interface units are equipped with the mainstream communication interfaces currently on the market, which makes it easy to communicate with the interface units when the acquisition units are expanded, meet the needs of increasing the number of acquisition paths of external devices, effectively reduce development costs, and improve system compatibility.

[0021] Preferably, the acquisition unit is provided with a hot-swap function.

[0022] In this solution, when a collection unit fails, in order to handle it without affecting other collection units and normal communication of the system, a hot-swap function is set for the collection unit. The collection unit can be directly replaced, reducing the impact on other equipment, thereby reducing the impact on platform door control and improving the system's availability and overall operational efficiency.

[0023] Preferably, the external device at least includes a collection frame, a local control panel, an integrated equipment panel and a door control unit.

[0024] In this solution, by collecting the status information of the acquisition frame, local control panel, integrated equipment panel and door control unit, it is possible to promptly detect whether external equipment has failed, which helps to promptly discover and deal with potential problems and ensure the stability and reliability of train operation.

[0025] Beneficial effects of the present invention: (1) The present invention analyzes train operation data, extracts possible states that may occur during train operation, associates external device information that needs to be collected corresponding to different train states, and combines collection units that need to be started to construct a collection template. Different collection templates are used for different train operation states. When the number of external devices is large, the step of allocating collection units can be simplified. Only the corresponding template needs to be selected, thereby improving the efficiency of detecting the state of external devices; (2) The present invention can timely discover and handle equipment failures through real-time monitoring and intelligent analysis of train status and external equipment information, reducing downtime and maintenance costs caused by failures. At the same time, accurate status monitoring also helps to extend the service life of equipment and reduce overall maintenance costs; (3) The present invention can improve the scalability of the interface unit, thereby configuring more acquisition units to meet more acquisition and other needs.

[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 method for collecting status of an external device according to the present invention; Figure 2 It is a block diagram of the platform door 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: Figure 1 As shown, in order to solve the problem that the efficiency of collecting external device information is reduced due to the increase in the workload of collecting external device status information as the number of external devices increases when the existing platform door control system controls the platform door, this embodiment provides an external device status collection method suitable for Figure 2 The platform door control system shown in the figure comprises a core unit, an interface unit controlled by the core unit, a collection unit connected to the interface unit, and a gate control unit controlled by the interface unit; the core unit of the present embodiment comprises a first core unit and a second core unit, the first core unit and the second core unit send control instructions, which are processed and merged into dual channels and provided to the interface unit, the collection unit collects external device status information, the interface unit evaluates the control instructions and the external device status information, and controls the gate control unit based on the evaluation results; the platform door control system applied in the present embodiment can be based on the original fully electronic interlocking 6U cage frame with a depth of 180mm, without changing the board size of the newly developed interface unit, by expanding the number of collection boards and realizing communication between the collection boards and the interface unit, the status of the collected external devices is obtained, and the demand for increasing the number of external device collection channels is met. As the number of channels for collecting status information increases, the information is uniformly provided to the interface unit one by one through the internal bus (such as the CAN bus) by expanding the number of collection units.

[0032] The following steps are involved: S1: Acquire historical train operation data, and acquire a train operation status set in response to a train status analysis strategy.

[0033] In this embodiment, the train historical operation data obtains the train operation state set in response to the train state analysis strategy, including the following steps: Performing position feature analysis and motion feature analysis on historical train operation data respectively to obtain position feature parameters and motion feature parameters; Based on the preset train status evaluation indicators, the position characteristic parameters and motion characteristic parameters are analyzed in different time periods to obtain the corresponding train historical status; The train historical status is deduplicated to obtain the train operation status set.

[0034] In order to obtain characteristic information of different operating states of the train, this embodiment performs a position characteristic analysis on the train to obtain position characteristic parameters such as key information such as the travel speed between different sections and stations, the stop time, etc., and then performs a motion characteristic analysis on the train to obtain motion characteristic parameters such as the acceleration, deceleration, and stability of the train during driving, so as to more comprehensively evaluate the operating state of the train, and then quantitatively analyze the train state based on the above characteristic parameters to accurately identify the train state, providing a data basis for the subsequent construction of a state acquisition template.

[0035] In this embodiment, the train running status in the train running status set includes at least a normal moving state, a parking state and a fault state.

[0036] In this embodiment, since there are many types of train running states, the train running states are mainly divided into three categories for easy identification. Since the train is mainly automatically controlled by a preset control program, when the train is running based on a preset running plan, it is in a normal moving state, when the train stops normally based on a preset empty car program, it is in a parked state, and when the train does not comply with the preset running plan, it is in a fault state. In different states, the states of external devices that need to be detected before issuing control instructions for the train are also different, and different external devices correspond to different collection units. The running state of the train is integrated and classified, which can provide convenience for the subsequent construction of a state collection template.

[0037] S2: constructing a state association relationship based on the external device information collected corresponding to different train running states in the train running state set, grouping the collection units based on the state association relationship to obtain a state collection template, and saving the state collection template to the interface unit.

[0038] In this embodiment, building a state association relationship based on the external device information corresponding to different train running states collected in the train running state set includes the following steps: The external device information at least includes acquisition frame status information, comprehensive backup disk status information, local control disk status information and locking information; If the train is in a normal motion state, the acquisition frame state information and the locking information are associated to obtain a motion association relationship; If the train is in a stopped state, the locking information is associated to obtain a stop association relationship; If the train is in a fault state, the comprehensive backup panel status information and the local control panel status information are associated to obtain a fault association relationship.

[0039] In this embodiment, when the train is in a fault state, the control instructions issued by the preset control program are not applicable to the current state, so manual control is required. At this time, it is necessary to collect the comprehensive backup disk status information and the local control disk status information, extract the external control instructions based on the information therein, and control the train according to the external control instructions, thereby improving the train's adaptability in unexpected situations, and at the same time can quickly locate the fault point, reduce the troubleshooting time, and improve maintenance efficiency; when the train is in a normal moving state, by collecting the collection frame status information and locking information, it can be ensured that the relevant equipment is operating normally and is in the correct locking state, thereby ensuring that the control instructions can normally control the relevant equipment, which helps to ensure the safety of the train operation; when the train is in a parked state, it is necessary to open or close the platform door. At this time, it is necessary to collect the locking information to ensure that the relevant equipment is in the correct locking state, thereby ensuring that the platform door can be opened and closed normally, and ensuring the safety of the train operation.

[0040] In this embodiment, grouping the collection units based on the state association relationship to obtain a state collection template includes the following steps: If the state association relationship is a motion association relationship, the acquisition units corresponding to the detection acquisition frame state information and the locking information are combined to obtain a motion acquisition template; If the state association relationship is a parking association relationship, the acquisition units corresponding to the detection locking information are combined to obtain a parking acquisition template; If the status association relationship is a fault association relationship, the acquisition units corresponding to the detection comprehensive backup disk status information and the local control disk status information are combined to obtain a fault acquisition template; The motion acquisition template, the parking acquisition template and the fault acquisition template are respectively saved to the interface unit to obtain the state acquisition template.

[0041] In order to quickly form a corresponding data acquisition plan for a large number of external devices, this embodiment combines the acquisition units required for the external device information to be collected in different train operating states to obtain different acquisition templates. Each train operating state corresponds to an acquisition template. When the train is in a certain state, it is only necessary to match the acquisition template corresponding to the state and drive the corresponding acquisition unit according to the acquisition template, which eliminates the step of organizing the external devices and simplifies the step of allocating the acquisition units, thereby improving the efficiency of detecting the state of the external devices.

[0042] S3: Acquire the current running status of the train based on the current running data of the train and select the corresponding status acquisition template based on the status association relationship to acquire the current external device status information.

[0043] In this embodiment, the current running state of the train is obtained based on the current running data of the train, and the corresponding state acquisition template is selected based on the state association relationship to obtain the current external device state information, including the following steps: Perform position feature analysis and motion feature analysis on the current running data of the train respectively to obtain current position feature parameters and high-definition motion feature parameters; Based on the train status evaluation index, the current position characteristic parameters and the current motion characteristic parameters are analyzed to obtain the current train operation status; The current train running status is matched with the status acquisition template through the status association relationship, and the corresponding acquisition unit is started based on the matching result to obtain the current external device status information.

[0044] In this embodiment, since there are a large number of external devices, a large number of collection units are required. The running state of the train changes in real time. Different running states of the train require different external device information to be collected, and the number of collection units to be driven is also different. The step of allocating collection units consumes a lot of system computing power and time. Therefore, a state collection template is set. According to historical data, the collection unit that needs to be driven for different states of the train is determined. When the train is in the corresponding running state, it only needs to match the corresponding template to directly drive the collection unit, and there is no need to allocate and calculate the collection unit separately. This greatly reduces the repeated steps during allocation and liberates the system computing power, thereby improving the stability of the system during operation, and at the same time improves the efficiency of collecting external device status information.

[0045] S4: The interface unit responds to the safety assessment principle with the current external device status information and the current running status of the train, and controls the platform door based on the assessment result.

[0046] In this embodiment, the interface unit responds to the safety assessment principle with the current external device status information and the current running status of the train, and controls the platform door based on the assessment result, including the following steps: The core unit sends control instructions to the interface unit based on control requirements, and the interface unit evaluates the status information of external devices according to the current operating status of the train; If the train is not in a fault state and the external device status information is normal, the control command is allowed to be sent to the door control unit through the interface unit; If the train is in a fault state, an emergency control instruction is generated based on the comprehensive backup disk status information and the local control disk status information in the external device status information and sent to the door control unit.

[0047] Before transmitting the control instruction, the interface unit of this embodiment will evaluate the current running status of the train and the status information of the external equipment. This double check mechanism helps to ensure that the control instruction will be sent to the door control unit only when the train is in a safe state and the external equipment is normal, which greatly reduces the safety risks caused by equipment failure or misoperation; when the train is in a faulty state, the system can generate emergency control instructions based on the comprehensive backup disk status information and the local control disk status information in the external equipment status information. This emergency handling mechanism ensures that even in the event of a fault, the system can take appropriate control measures to ensure the safety of passengers and the normal operation of the train; through real-time evaluation of the train running status and external equipment status information, the system can intelligently allocate resources. For example, when the train is operating normally and the external equipment is in normal status, the system can allow the control instruction to be sent to the door control unit through the interface unit, thereby realizing effective utilization of resources, and in the event of a fault, the system can give priority to emergency control instructions to ensure the normal operation of key equipment and optimize resource utilization.

[0048] In this embodiment, the interface unit is provided with at least a serial interface, an Ethernet interface, and analog and digital I / O interfaces.

[0049] In order to improve the expansion capability of the acquisition unit in this embodiment, the interface units are all provided with mainstream communication interfaces currently on the market, so that when the acquisition unit is expanded, it can communicate with the interface unit without obstacles, meet the demand for increased acquisition paths of external devices, effectively reduce development costs, and improve system compatibility.

[0050] In this embodiment, the acquisition unit is provided with a hot-swap function.

[0051] In this embodiment, when a collection unit fails, in order to handle it without affecting other collection units and normal communication of the system, a hot-swap function is set for the collection unit, so that the collection unit can be directly replaced, reducing the impact on other equipment, thereby reducing the impact on platform door control, and improving the system's availability and overall operational efficiency.

[0052] In this embodiment, the external device at least includes a collection frame, a local control panel, an integrated equipment panel and a door control unit.

[0053] This embodiment collects status information of the acquisition frame, local control panel, integrated equipment panel and door control unit, so as to promptly detect whether external equipment has faults, which helps to promptly detect and deal with potential problems and ensure the stability and reliability of train operation.

[0054] This embodiment analyzes the train operation data, extracts the possible states that may occur during the train operation, associates the external device information that needs to be collected corresponding to different train states, and combines the collection units that need to be started to construct a collection template. Different collection templates are used for different train operation states. The steps of allocating collection units can be simplified when the number of external devices is large. Only the corresponding template needs to be selected, thereby improving the efficiency of detecting the state of external devices. Through real-time monitoring and intelligent analysis of train status and external device information, equipment failures can be discovered and handled in time, reducing downtime and maintenance costs caused by failures. At the same time, accurate status monitoring also helps to extend the service life of equipment and reduce overall maintenance costs.

[0055] It can be seen from the above embodiments that at least the following substantial effects are achieved: (1) The present invention analyzes the train operation data, extracts the possible states that may occur during the train operation, associates the external device information that needs to be collected corresponding to different train states, and combines the collection units that need to be started to construct a collection template. Different collection templates are used for different train operation states. When the number of external devices is large, the step of allocating collection units can be simplified. Only the corresponding template needs to be selected, thereby improving the efficiency of detecting the state of external devices; (2) The present invention can timely discover and handle equipment failures through real-time monitoring and intelligent analysis of train status and external equipment information, reducing downtime and maintenance costs caused by failures. At the same time, accurate status monitoring also helps to extend the service life of equipment and reduce overall maintenance costs; (3) The present invention can improve the scalability of the interface unit, thereby configuring more acquisition units to meet more acquisition and other needs.

[0056] The specific implementation described above is a preferred implementation of an external device status acquisition method 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 method for collecting the state of an external device, applicable to a platform door control system, the platform door control system comprising a core unit, an interface unit controlled by the core unit, a collection unit connected to the interface unit, and a door control unit controlled by the interface unit; the core unit issues a control instruction, the collection unit collects the state information of the external device, the interface unit evaluates the control instruction and the state information of the external device, and controls the door control unit based on the evaluation result; Features: The following steps are involved: S1. Acquire historical train operation data, and acquire a train operation state set in response to a train state analysis strategy based on the historical train operation data; S2, constructing a state association relationship based on the external device information collected corresponding to different train running states in the train running state set, grouping the collection units based on the state association relationship to obtain a state collection template, and saving the state collection template to the interface unit; S3, obtaining the current running state of the train based on the current running data of the train and selecting the corresponding state acquisition template based on the state association relationship to obtain the current external device state information; S4. The interface unit responds to the safety assessment principle with the current external device status information and the current train operation status, and controls the platform door based on the assessment result.

2. The method for collecting the status of an external device according to claim 1, characterized in that: In S1, the train historical operation data obtains a train operation state set in response to the train state analysis strategy, including the following steps: performing position feature analysis and motion feature analysis on the train historical operation data respectively to obtain position feature parameters and motion feature parameters; Based on the preset train status evaluation indicators, the position characteristic parameters and motion characteristic parameters are analyzed in different time periods to obtain the corresponding train historical status; The train historical status is deduplicated to obtain the train operation status set.

3. The method for collecting the status of an external device according to claim 2, characterized in that: The train running status in the train running status set at least includes a normal moving state, a parking state and a fault state.

4. The method for collecting the status of an external device according to claim 1, characterized in that: In S2, a state association relationship is constructed based on the external device information collected corresponding to different train running states in the train running state set, including the following steps: The external device information at least includes acquisition frame status information, comprehensive backup disk status information, local control disk status information and locking information; If the train is in a normal motion state, the acquisition frame state information and the locking information are associated to obtain a motion association relationship; If the train is in a stopped state, the locking information is associated to obtain a stop association relationship; If the train is in a fault state, the comprehensive backup panel status information and the local control panel status information are associated to obtain a fault association relationship.

5. The method for collecting the status of an external device according to claim 4, characterized in that: In S2, the collection units are grouped based on the state association relationship to obtain a state collection template, including the following steps: If the state association relationship is a motion association relationship, the acquisition units corresponding to the detection acquisition frame state information and the locking information are combined to obtain a motion acquisition template; If the state association relationship is a parking association relationship, the acquisition units corresponding to the detection locking information are combined to obtain a parking acquisition template; If the status association relationship is a fault association relationship, the acquisition units corresponding to the detection comprehensive backup disk status information and the local control disk status information are combined to obtain a fault acquisition template; The motion acquisition template, the parking acquisition template and the fault acquisition template are respectively saved to the interface unit to obtain the state acquisition template.

6. The method for collecting the status of an external device according to claim 1, characterized in that: In S3, the current running state of the train is obtained based on the current running data of the train, and the corresponding state acquisition template is selected based on the state association relationship to obtain the current external device state information, including the following steps: Perform position feature analysis and motion feature analysis on the current running data of the train respectively to obtain current position feature parameters and high-definition motion feature parameters; Based on the train status evaluation index, the current position characteristic parameters and the current motion characteristic parameters are analyzed to obtain the current train operation status; The current train running status is matched with the status acquisition template through the status association relationship, and the corresponding acquisition unit is started based on the matching result to obtain the current external device status information.

7. The method for collecting status of an external device according to claim 1, characterized in that: In S4, the interface unit responds to the safety assessment principle with the current external device status information and the current running status of the train, and controls the platform door based on the assessment result, including the following steps: The core unit sends control instructions to the interface unit based on control requirements, and the interface unit evaluates the status information of external devices according to the current operating status of the train; If the train is not in a fault state and the external device status information is normal, the control command is allowed to be sent to the door control unit through the interface unit; If the train is in a fault state, an emergency control instruction is generated based on the comprehensive backup disk status information and the local control disk status information in the external device status information and sent to the door control unit.

8. A method for collecting external device status according to claim 1, 5 or 7, characterized in that: The interface unit is provided with at least a serial interface, an Ethernet interface, and analog and digital I / O interfaces.

9. A method for collecting external device status according to claim 1, 4 or 5, characterized in that: The acquisition unit is provided with a hot-swap function.

10. A method for collecting external device status according to claim 1 or 4 or 6 or 7, characterized in that: The external equipment at least includes a collection frame, a local control panel, an integrated equipment panel and a door control unit.

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