Method and device for monitoring the insulation of a metro platform door

Abstract

This disclosure provides a method and apparatus for monitoring the insulation of subway platform doors. Leakage current is led out through a leakage current lead-out device, then through a current collector and discharged into the ground. A first current sensor is connected to a lead-out wire to collect the first leakage current. A second current sensor monitors the second leakage current on the equipotential line between the subway platform door and the train return rail. A voltage sensor monitors the voltage between the subway platform door and the current collector. Based on the voltage and the first current, a first insulation resistance value is calculated. Based on the voltage and the second current, a second insulation resistance value is calculated. An insulation state parameter processing device judges the insulation state of the subway platform door based on the calculated first and second insulation resistance values, as well as the monitored first and second currents. This disclosure can monitor changes in the insulation state of subway platform doors in real time.

Description

Technical Field

[0001] This disclosure relates to the field of rail transit technology, and in particular to a method and device for monitoring the insulation of subway platform doors. Background Technology

[0002] Most subway trains in my country use DC power supply systems and connect the rails directly to the traction substation as return rails. To prevent stray currents from corroding underground metal pipelines, the rails and the ground are insulated. The rails are connected to the grounding grid through the grounding busbar of the traction substation, thus creating a potential difference between the rails and the train body and the ground.

[0003] To prevent passengers from touching the platform screen doors installed on the platform when boarding or alighting and to avoid the risk of electric shock, the top and bottom of the platform screen door structure are insulated, meaning the platform screen door is insulated from the ground. After the platform screen doors are put into operation, the platform screen door body and the rails must also be kept at the same potential, meaning the platform screen door body and the rails must be connected at the same potential.

[0004] In actual operation, environmental factors such as humidity and pollution can cause the insulation performance of insulating components to deteriorate, and even lead to combustion and fire accidents, which significantly impacts the normal operation of trains and poses a high risk to passenger safety. Therefore, it is essential to develop a platform door insulation condition monitoring device to promptly detect changes in the insulation condition of insulating components. Summary of the Invention

[0005] This disclosure provides a method and device for monitoring the insulation of subway platform doors. Its main purpose is to achieve real-time monitoring of changes in the insulation status of the insulating components of subway platform doors.

[0006] According to a first aspect of this disclosure, a monitoring device for the insulation of subway platform doors is provided, comprising:

[0007] An insulator system used to draw out leakage current through a leakage current extraction device;

[0008] The leakage current extraction subsystem consists of various leakage current extraction devices and a current collection busbar on the upper and lower support connectors of the subway platform door, used to extract the leakage current and flow it into the ground; wherein, the leakage current extraction device includes a first current sensor and a current-guiding wire, the current-guiding wire being connected to the current collection busbar, and the first current sensor being connected to the current-guiding wire, used to collect the first leakage current.

[0009] A voltage sensor is used to monitor the voltage between the subway platform door and the current collector.

[0010] The second current sensor is used to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail.

[0011] An insulation status parameter processing device is connected to the first current sensor, the voltage sensor, and the second current sensor. It is used to receive the first leakage current and the second leakage current monitored by the first current sensor and the second current sensor, the voltage monitored by the voltage sensor, and to determine the insulation status of the upper and lower support connectors of the subway platform door and the platform door as a whole based on the received first leakage current, second leakage current, and voltage.

[0012] Optionally, the insulator system includes:

[0013] The insulator system consists of a sealing insulating cap, a bolt insulating sleeve gasket, an insulating plate, and a penetrating bolt;

[0014] The penetrating bolt passes through the bolt insulating sleeve washer and is connected and fixed to the upper and lower support connectors of the subway platform door, the insulating leakage current lead plate, and the insulating plate.

[0015] The sealing and insulating cap is placed outside the penetrating bolt, positioned on the upper part of the upper and lower support connectors of the subway platform door, and fixed with sealant.

[0016] Optionally, the leakage current drainage subsystem includes:

[0017] The upper and lower support connectors include at least one bottom upper and lower support connector for the platform door or at least one upper connector, and the leakage current is led out from the upper and lower support connectors.

[0018] At least one leakage current lead-out device is connected to the current busbar, and the busbar is connected to the grounding electrode. When the upper and lower support connectors leak current, the leakage current lead-out device leads it to the busbar.

[0019] Optionally, the leakage current extraction device includes:

[0020] The leakage current extraction device consists of the current-leading wire, the first current sensor, the insulated leakage current lead plate, the coil OT terminal, and the connecting bolts.

[0021] The insulation leakage current lead plate has pre-drilled bolt connection holes;

[0022] One end of the drain wire is crimped to the coiled OT terminal, and then the connecting bolt is sleeved on it, and the connecting bolt is fixed in the connecting hole of the lead plate;

[0023] The other end of the lead wire is crimped to the coiled OT terminal, and then the connecting bolt is sleeved on it. The connecting bolt is connected to the current busbar.

[0024] Optionally, the insulation state parameter processing device is further used for:

[0025] The first insulation resistance value is calculated based on the voltage monitored by the voltage sensor and the first current monitored by the first current sensor;

[0026] The second insulation resistance value is calculated based on the voltage monitored by the voltage sensor and the second current monitored by the second current sensor;

[0027] The insulation status of the upper and lower support connectors of the subway platform door is determined based on the calculated first insulation resistance value and the preset alarm resistance value.

[0028] Based on the first current and the first preset alarm current value, determine the insulation status of the upper and lower support connectors of the subway platform door;

[0029] The insulation status of the subway platform door is determined based on the calculated second insulation resistance value and the preset alarm resistance value.

[0030] Based on the second current and the second preset alarm current value, the insulation status of the upper and lower support connectors of the subway platform door is determined.

[0031] Optionally, the insulation state parameter processing device is further used for:

[0032] If the insulation of the subway platform door is determined to be faulty, an insulation failure alarm will be triggered.

[0033] Based on the results determined by the insulation condition parameter processing device, the upper and lower support connectors of the platform door that output leakage current are identified to determine the location of insulation failure.

[0034] According to a second aspect of this disclosure, a method for monitoring the insulation of subway platform doors is provided, comprising:

[0035] The first leakage current is collected based on the first current sensor, wherein the first current sensor is connected to the drain wire, the drain wire is connected to the current collection busbar, and the current collection busbar is used to lead out the leakage current and flow it into the ground.

[0036] A second current sensor was used to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail.

[0037] A voltage sensor is used to monitor the voltage between the subway platform door and the current collector.

[0038] Calculate the first insulation resistance value based on the first leakage current and the voltage;

[0039] Calculate the second insulation resistance value based on the second leakage current and the voltage;

[0040] If it is determined that the first current exceeds the first preset alarm current, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed.

[0041] If it is determined that the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed.

[0042] If it is determined that the second current exceeds the second preset alarm current, then the insulation of the subway platform door is determined to be faulty.

[0043] If the second insulation resistance value is determined to be less than or equal to the second preset alarm insulation resistance value, then the insulation of the subway platform door is determined to be faulty.

[0044] Optionally, acquiring the first leakage current based on the first current sensor includes:

[0045] The first leakage current collected by the first current sensor is transmitted to the insulation condition parameter processing device.

[0046] Based on the insulation state parameter processing device, the first leakage current collected by the first current sensor is monitored, and the current sensor identifier corresponding to the first current sensor is recorded.

[0047] Optionally, calculating the first insulation resistance value based on the first leakage current and the voltage includes:

[0048] The voltage collected by the voltage sensor is transmitted to the insulation state parameter processing device;

[0049] Based on the insulation state parameter processing device, the first insulation resistance value is calculated according to the voltage and the first leakage current.

[0050] Optionally, calculating the second insulation resistance value based on the second leakage current and the voltage includes:

[0051] The second current collected by the second current sensor is transmitted to the insulation state parameter processing device;

[0052] Based on the insulation state parameter processing device, the second insulation resistance value is calculated according to the second leakage current and the voltage.

[0053] Optionally, the method further includes:

[0054] After determining that the upper and lower support connectors of the subway platform door or the insulation of the subway platform door has failed, the identifier of the upper and lower support connectors of the connected subway platform door is determined according to the identifier of the current sensor.

[0055] An alarm is triggered indicating insulation failure of the subway platform door, and the identifiers of the upper and lower support connectors are output to determine the location of the insulation failure.

[0056] This disclosure provides a method and apparatus for monitoring the insulation of subway platform doors. Leakage current is led out through a leakage current lead-out device and then through a current collector to the ground. The leakage current lead-out device is connected to the current collector via a lead-out wire. A first current sensor is connected to the lead-out wire to collect a first leakage current. A second current sensor monitors a second leakage current on the equipotential line between the subway platform door and the train return rail. A voltage sensor monitors the voltage between the subway platform door and the current collector. A first insulation resistance value is calculated based on the first leakage current and the voltage. A second insulation resistance value is calculated based on the second leakage current and the voltage. If the first current exceeds a first preset alarm current, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the second current exceeds a second preset alarm current, the insulation of the subway platform door is determined to be faulty. If the second insulation resistance value is less than or equal to the second preset alarm insulation resistance value, the insulation of the subway platform door is determined to be faulty. This disclosure can monitor the changes in the insulation status of subway platform doors in real time.

[0057] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0058] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0059] Figure 1 A schematic diagram of a monitoring device for the insulation of a subway platform door provided in an embodiment of this disclosure;

[0060] Figure 2 A schematic diagram of the insulator system and leakage current lead-out subsystem of a monitoring device for the insulation of a subway platform door provided in an embodiment of this disclosure;

[0061] Figure 3 A schematic diagram of a leakage current lead-out device for a monitoring device for the insulation of a subway platform door provided in this embodiment of the present disclosure;

[0062] Figure 4 A schematic flowchart of a method for monitoring the insulation of subway platform doors provided in this embodiment of the present disclosure;

[0063] Figure 5 A schematic block diagram of an example electronic device 600 provided for embodiments of this disclosure. Detailed Implementation

[0064] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0065] The following describes a method and apparatus for monitoring the insulation of subway platform doors according to embodiments of the present disclosure, with reference to the accompanying drawings.

[0066] Figure 1 This is a schematic diagram of a monitoring device for the insulation of a subway platform door provided in an embodiment of this disclosure.

[0067] Insulator system 1 is used to draw out leakage current through leakage current lead-out device 21;

[0068] The leakage current extraction subsystem 2 consists of various leakage current extraction devices 21 and a current collection busbar 22 on the upper and lower support connectors of the subway platform door, used to extract the leakage current and flow it into the ground; wherein, the leakage current extraction device 21 includes a first current sensor 211 and a current collection wire 212, the current collection wire 212 is connected to the current collection busbar 22, and the first current sensor 211 is connected to the current collection wire 212, used to collect the first leakage current;

[0069] Voltage sensor 3 is used to monitor the voltage between the subway platform door and the current collector 22;

[0070] The second current sensor 4 is used to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail.

[0071] The insulation status parameter processing device 5 is connected to the first current sensor 211, the voltage sensor 3, and the second current sensor 4. It is used to receive the first leakage current and the second leakage current monitored by the first current sensor 211 and the second current sensor 4, the voltage monitored by the voltage sensor 3, and to determine the insulation status of the upper and lower support connectors of the subway platform door and the platform door as a whole based on the received first leakage current, second leakage current, and voltage.

[0072] This disclosure provides a monitoring device for the insulation of a subway platform door. Leakage current is led out through a leakage current lead-out device 21 and then through a current collector 22, flowing into the ground. The leakage current lead-out device 21 is connected to the current collector 22 via a guide wire 212. A first current sensor 211 is connected to the guide wire 212 to collect the first leakage current. A second current sensor 4 monitors the second leakage current on the equipotential line between the subway platform door and the train return rail. A voltage sensor 3 monitors the voltage between the subway platform door and the current collector. A first insulation resistance value is calculated based on the first leakage current and the voltage. A second insulation resistance value is calculated based on the second leakage current and the voltage. If the first current exceeds a first preset alarm current, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the second current exceeds a second preset alarm current, the insulation of the subway platform door is determined to be faulty. If the second insulation resistance value is less than or equal to the second preset alarm insulation resistance value, the insulation of the subway platform door is determined to be faulty. This disclosure allows for real-time monitoring of changes in the insulation status of the upper and lower support connectors of subway platform doors and the overall insulation of the platform doors.

[0073] Figure 2 This is a schematic diagram of the insulator system and leakage current lead-out subsystem of a monitoring device for the insulation of a subway platform door provided in an embodiment of this disclosure. The insulator system 1 includes:

[0074] The insulator system 1 consists of a sealing insulating cap 11, a bolt insulating sleeve washer 12, an insulating plate 13, and a penetrating bolt 14;

[0075] The penetrating bolt 14 passes through the bolt insulating sleeve washer 12 and is connected and fixed to the upper and lower support connectors of the subway platform door, the insulating leakage current lead plate 213, and the insulating plate 13.

[0076] The sealing and insulating cap 11 is disposed outside the penetrating bolt 14, placed on the upper part of the upper and lower support connectors of the subway platform door, and fixed with sealant.

[0077] Furthermore, in one possible implementation of this embodiment, such as Figure 2 As shown, the leakage current diversion subsystem 2 includes:

[0078] The upper and lower support connectors include at least one bottom upper and lower support connector for the platform door or at least one upper connector, and the leakage current is led out from the upper and lower support connectors.

[0079] At least one leakage current lead-out device 21 is connected to the current collection busbar 22, which is connected to the grounding electrode. When the upper and lower support connectors leak current, the leakage current is led out by the leakage current lead-out device 21 to the current collection busbar 22.

[0080] Furthermore, in one possible implementation of this embodiment, such as Figure 3 As shown, the leakage current extraction device 21 includes:

[0081] The leakage current lead-out device 21 consists of the first current sensor 211, the lead wire 212, the insulated leakage current lead plate 213, the coil OT terminal 214, and the connecting bolt 215.

[0082] The insulating leakage current lead plate 213 has a pre-drilled bolt connection hole;

[0083] One end of the lead wire is crimped to the coiled OT terminal 214, and then the connecting bolt 215 is sleeved on it. The connecting bolt 215 is then fixed in the connecting hole of the insulating leakage current lead plate.

[0084] The other end of the lead wire is crimped to the coiled OT terminal 214, and then the connecting bolt is sleeved on it. The connecting bolt is connected to the current busbar 22.

[0085] Furthermore, in one possible implementation of this embodiment, the insulation state parameter processing device 5 is also used for:

[0086] The first insulation resistance value is calculated based on the voltage monitored by the voltage sensor 3 and the first current monitored by the first current sensor 211;

[0087] The second insulation resistance value is calculated based on the voltage monitored by the voltage sensor 3 and the second current monitored by the second current sensor 4;

[0088] The insulation status of the upper and lower support connectors of the subway platform door is determined based on the calculated first insulation resistance value and the preset alarm resistance value.

[0089] Based on the first current and the first preset alarm current value, determine the insulation status of the upper and lower support connectors of the subway platform door;

[0090] The insulation status of the subway platform door is determined based on the calculated second insulation resistance value and the preset alarm resistance value.

[0091] Based on the second current and the second preset alarm current value, the insulation status of the upper and lower support connectors of the subway platform door is determined.

[0092] Furthermore, in one possible implementation of this embodiment, the insulation state parameter processing device 5 is also used for:

[0093] If the insulation of the subway platform door is determined to be faulty, an insulation failure alarm will be triggered.

[0094] Based on the results determined by the insulation condition parameter processing device 5, the identification of the upper and lower support connectors of the platform door that output leakage current is used to determine the location of insulation failure.

[0095] This application also provides a method for monitoring the insulation of subway platform doors, the method being achieved by... Figures 1 to 3 The monitoring device for the insulation of the subway platform doors shown is implemented, such as... Figure 4 As shown, the method includes the following steps:

[0096] Step 101: Collect a first leakage current based on a first current sensor, wherein the first current sensor is connected to a drain wire, the drain wire is connected to a current collector, and the current collector is used to draw out the leakage current and flow it into the ground.

[0097] The leakage current is led out through a leakage current extraction device and directed to a current collector. A first current sensor is connected to the lead wire, which is used to collect the first leakage current in the lead wire.

[0098] Step 102: Use a second current sensor to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail.

[0099] During subway operation, equipotential bonding is required between the platform screen doors and the rails. If the insulation of the platform screen doors fails, the current in the equipotential bonding line between the platform screen doors and the train return rail will increase to or exceed the warning value. A second current sensor is used to measure the current in the equipotential bonding line.

[0100] Step 103: Use a voltage sensor to monitor the voltage between the subway platform door and the current collector.

[0101] Because an equipotential bonding is required between the platform screen door and the rails, a potential difference exists between the platform screen door and the current collector. A voltmeter is placed between the platform screen door's steel structure and the current collector to collect the voltage.

[0102] Step 104: Calculate the grounding resistance value based on the first leakage current and the voltage.

[0103] To obtain the grounding resistance value of the upper and lower support connectors between the platform screen door body and the current collector, a voltage sensor is installed between the steel structure of the platform screen door body and the current collector to collect the voltage. The grounding resistance value of the upper and lower support connectors between the platform screen door body and the current collector is calculated based on the first leakage current collected by the first current sensor and the voltage.

[0104] Step 105: If it is determined that the first current exceeds the first preset alarm current, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed.

[0105] If it is determined that the first current does not exceed the first preset alarm current, then the subway platform door is determined to be in good insulation.

[0106] Step 106: If it is determined that the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed.

[0107] If it is determined that the first insulation resistance value is greater than the first preset alarm insulation resistance value, then it is determined that the insulation of the upper and lower support connectors of the subway platform door is good.

[0108] Step 107: If it is determined that the second current exceeds the second preset alarm current, then it is determined that the insulation of the subway platform door has failed.

[0109] If it is determined that the second current does not exceed the second preset alarm current, then the subway platform door is confirmed to be in good insulation.

[0110] Step 108: If it is determined that the second insulation resistance value is less than or equal to the second preset alarm insulation resistance value, then the insulation of the subway platform door is determined to be faulty.

[0111] If the second insulation resistance value is determined to be greater than the second preset alarm insulation resistance value, then the subway platform door is determined to be in good insulation condition.

[0112] This disclosure provides a method for monitoring the insulation of subway platform doors. Leakage current is led out through a leakage current extraction device and then through a current collector to ground. The leakage current extraction device is connected to the current collector via a guide wire. A first current sensor is connected to the guide wire to collect a first leakage current. A second current sensor monitors a second leakage current on the equipotential line between the subway platform door and the train return rail. A voltage sensor monitors the voltage between the subway platform door and the current collector. If the first current exceeds a first preset alarm current, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, the insulation of the upper and lower support connectors of the subway platform door is determined to be faulty. If the second current exceeds a second preset alarm current, the insulation of the subway platform door is determined to be faulty. If the second insulation resistance value is less than or equal to the second preset alarm insulation resistance value, the insulation of the subway platform door is determined to be faulty. This disclosure can monitor the changes in the insulation status of the upper and lower support connectors of the subway platform door and the overall platform door in real time.

[0113] As a refinement of the embodiments of this disclosure, after step 101 is performed to collect the first leakage current based on the first current sensor, the following implementation methods can be adopted, but are not limited to:

[0114] The first leakage current collected by the first current sensor is transmitted to the insulation condition parameter processing device.

[0115] Based on the insulation state parameter processing device, the first leakage current collected by the first current sensor is monitored, and the current sensor identifier corresponding to the first current sensor is recorded.

[0116] The insulation condition parameter processing device assesses the insulation status of the subway platform door based on the first leakage current monitored and collected by the first current sensor. The device also records the identifier of the current sensor corresponding to the first current sensor.

[0117] Furthermore, in one possible implementation of this embodiment, calculating the first insulation resistance value based on the first leakage current and the voltage includes:

[0118] The voltage collected by the voltage sensor is transmitted to the insulation state parameter processing device;

[0119] Based on the insulation state parameter processing device, the first insulation resistance value is calculated according to the voltage and the first leakage current.

[0120] The insulation status parameter processing device calculates the first insulation resistance value of the upper and lower support connectors of the subway platform door based on the first leakage current and voltage monitored and collected by the first current sensor.

[0121] Furthermore, in one possible implementation of this embodiment, calculating the second insulation resistance value based on the second leakage current and the voltage includes:

[0122] The second current collected by the second current sensor is transmitted to the insulation state parameter processing device;

[0123] Based on the insulation state parameter processing device, the second insulation resistance value is calculated according to the second leakage current and the voltage.

[0124] Because the platform screen doors and rails are connected at equipotential bonding, if the insulation of the platform screen door fails, the current in the equipotential line between the platform screen door and the train return rail will increase to or exceed the warning value. A second current sensor measures the current in the equipotential line and transmits the monitored results to the insulation status parameter processing device for insulation status assessment. The insulation status parameter processing device calculates the second insulation resistance value of the platform screen door based on the second leakage current and voltage monitored and collected by the second current sensor.

[0125] Furthermore, in one possible implementation of this embodiment, the method further includes:

[0126] After determining that the upper and lower support connectors of the subway platform door or the insulation of the subway platform door has failed, the identifier of the upper and lower support connectors of the connected subway platform door is determined according to the identifier of the current sensor.

[0127] An alarm is triggered indicating insulation failure of the subway platform door, and the identifiers of the upper and lower support connectors are output to determine the location of the insulation failure.

[0128] When a subway platform door insulation failure is detected, the location of the failed upper and lower support connectors is determined based on the markings on the first current sensors at the connection points. The insulation status parameter processing device outputs the markings of the upper and lower support connectors simultaneously with the alarm.

[0129] It should be noted that the foregoing explanation of the method embodiments also applies to the apparatus of this embodiment, and the principle is the same, so it is not limited in this embodiment.

[0130] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0131] Figure 5 A schematic block diagram of an example electronic device 600 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0132] like Figure 5 As shown, device 600 includes a computing unit 601, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 602 or a computer program loaded from storage unit 608 into RAM (Random Access Memory) 603. RAM 603 may also store various programs and data required for the operation of device 600. The computing unit 601, ROM 602, and RAM 603 are interconnected via bus 604. I / O (Input / Output) interface 605 is also connected to bus 604.

[0133] Multiple components in device 600 are connected to I / O interface 605, including: input unit 606, such as keyboard, mouse, etc.; output unit 607, such as various types of monitors, speakers, etc.; storage unit 608, such as disk, optical disk, etc.; and communication unit 609, such as network card, modem, wireless transceiver, etc. Communication unit 609 allows device 600 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0134] The computing unit 601 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 601 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 601 performs the various methods and processes described above, such as the method for monitoring the insulation of subway platform doors. For example, in some embodiments, the method for monitoring the insulation of subway platform doors may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as storage unit 608. In some embodiments, part or all of the computer program may be loaded and / or installed on device 600 via ROM 602 and / or communication unit 609. When the computer program is loaded into RAM 603 and executed by the computing unit 601, one or more steps of the methods described above may be performed. Alternatively, in other embodiments, the computing unit 601 may be configured to perform the aforementioned method for monitoring the insulation of subway platform doors by any other suitable means (e.g., by means of firmware).

[0135] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0136] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0137] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0138] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0139] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0140] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service ecosystem, addressing the shortcomings of traditional physical hosts and VPS (Virtual Private Server, or simply "VPS") services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0141] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0142] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0143] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A metro platform door insulation online monitoring system, characterized in that, include: An insulator system used to draw out leakage current through a leakage current extraction device; The leakage current extraction subsystem consists of various leakage current extraction devices and a current collection busbar on the upper and lower support connectors of the subway platform door, used to extract the leakage current and flow it into the ground; wherein, the leakage current extraction device includes a first current sensor and a current-guiding wire, the current-guiding wire being connected to the current collection busbar, and the first current sensor being connected to the current-guiding wire, used to collect the first leakage current. A voltage sensor is used to monitor the voltage between the subway platform door and the current collector. The second current sensor is used to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail. An insulation status parameter processing device is connected to the first current sensor, the voltage sensor, and the second current sensor. It is used to receive the first leakage current and the second leakage current monitored by the first current sensor and the second current sensor, the voltage monitored by the voltage sensor, and to determine the insulation status of the upper and lower support connectors of the subway platform door and the platform door as a whole based on the received first leakage current, second leakage current, and voltage. The insulation state parameter processing device is also used for: The first insulation resistance value is calculated based on the voltage monitored by the voltage sensor and the first current monitored by the first current sensor; The second insulation resistance value is calculated based on the voltage monitored by the voltage sensor and the second current monitored by the second current sensor; The insulation status of the upper and lower support connectors of the subway platform door is determined based on the calculated first insulation resistance value and the preset alarm resistance value. Based on the first current and the first preset alarm current value, determine the insulation status of the upper and lower support connectors of the subway platform door; The insulation status of the subway platform door is determined based on the calculated second insulation resistance value and the preset alarm resistance value. Based on the second current and the second preset alarm current value, the insulation status of the upper and lower support connectors of the subway platform door is determined.

2. The system of claim 1, wherein, The insulator system includes: The insulator system consists of a sealing insulating cap, a bolt insulating sleeve gasket, an insulating plate, and a penetrating bolt; The penetrating bolt passes through the bolt insulating sleeve washer and is connected and fixed to the upper and lower support connectors of the subway platform door, the insulating leakage current lead plate, and the insulating plate. The sealing and insulating cap is placed outside the penetrating bolt, positioned on the upper part of the upper and lower support connectors of the subway platform door, and fixed with sealant.

3. The system of claim 1, wherein, The leakage current extraction subsystem includes: The upper and lower support connectors include at least one bottom upper and lower support connector for the platform door or at least one upper connector, and the leakage current is led out from the upper and lower support connectors. At least one leakage current lead-out device is connected to the current collector, which is connected to the grounding electrode. When leakage current occurs in the upper and lower support connectors, it is led out by the leakage current lead-out device to the current collector.

4. The system of claim 2, wherein, The leakage current extraction device includes: The leakage current extraction device consists of the first current sensor, the current-guiding wire, the insulated leakage current lead plate, the coil OT terminal, and the connecting bolts. The insulation leakage current lead plate has pre-drilled bolt connection holes; One end of the lead wire is crimped to the coiled OT terminal, and then the connecting bolt is sleeved on it. The connecting bolt is then fixed to the bolt connection hole on the insulating leakage current lead plate. The other end of the lead wire is crimped to the coiled OT terminal, and then the connecting bolt is sleeved on it. The connecting bolt is connected to the current busbar.

5. The system of claim 1, wherein, The insulation state parameter processing device is also used for: If the insulation of the subway platform door is determined to be faulty, an insulation failure alarm will be triggered. Based on the results determined by the insulation condition parameter processing device, the upper and lower support connectors of the platform door that output leakage current are identified to determine the location of insulation failure.

6. A method for monitoring the insulation of a metro platform door in line, which method uses the system as claimed in claim 1, characterized in that, include: The first leakage current is collected based on the first current sensor, wherein the first current sensor is connected to the drain wire, the drain wire is connected to the current collection busbar, and the current collection busbar is used to lead out the leakage current and flow it into the ground. A second current sensor was used to monitor the second leakage current on the equipotential line between the subway platform door and the train return rail. A voltage sensor is used to monitor the voltage between the subway platform door and the current collector. Calculate the first insulation resistance value based on the first leakage current and the voltage; Calculate the second insulation resistance value based on the second leakage current and the voltage; If it is determined that the first current exceeds the first preset alarm current, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed. If it is determined that the first insulation resistance value is less than or equal to the first preset alarm insulation resistance value, then it is determined that the insulation of the upper and lower support connectors of the subway platform door has failed. If it is determined that the second current exceeds the second preset alarm current, then the insulation of the subway platform door is determined to be faulty. If the second insulation resistance value is determined to be less than or equal to the second preset alarm insulation resistance value, then the insulation of the subway platform door is determined to be faulty.

7. The method of claim 6, wherein, The first leakage current is collected based on the first current sensor, including: The first leakage current collected by the first current sensor is transmitted to the insulation condition parameter processing device. Based on the insulation state parameter processing device, the first leakage current collected by the first current sensor is monitored, and the current sensor identifier corresponding to the first current sensor is recorded.

8. The method of claim 7, wherein, The step of calculating the first insulation resistance value based on the first leakage current and the voltage includes: The voltage collected by the voltage sensor is transmitted to the insulation state parameter processing device; Based on the insulation state parameter processing device, the first insulation resistance value is calculated according to the voltage and the first leakage current.

9. The method of claim 8, wherein, The step of calculating the second insulation resistance value based on the second leakage current and the voltage includes: The second current collected by the second current sensor is transmitted to the insulation state parameter processing device; Based on the insulation state parameter processing device, the second insulation resistance value is calculated according to the second leakage current and the voltage.

10. The method of claim 6, wherein, The method further includes: After determining that the upper and lower support connectors of the subway platform door or the insulation of the subway platform door has failed, the identifier of the upper and lower support connectors of the connected subway platform door is determined according to the identifier of the current sensor. An alarm is triggered indicating insulation failure of the subway platform door, and the identifiers of the upper and lower support connectors are output to determine the location of the insulation failure.

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