Intelligent safety locking system and method for coal mine electrical equipment

Abstract

The application discloses a kind of coal mine electrical equipment intelligent safety locking systems, belong to electrical equipment safety monitoring technical field, it includes for creating, approving, issuing and archiving management to electrical equipment maintenance work ticket and generating work ticket data electronic work ticket management module;For real-time acquisition of the position information of underground maintenance personnel underground personnel accurate positioning system interface module;For connecting and controlling underground electrical equipment, according to control instruction to intelligent power supply unit is opened or closed intelligent power supply unit interface module and for according to work ticket data, position information carries out "people-ground-ticket" trinity authentication and generates control instruction according to authentication result AI intelligent association and decision engine.The coal mine electrical equipment intelligent safety locking system and method provided by the application can deeply integrate personnel position, operation permission, equipment status and remote authorization, fundamentally eliminate the possibility of maintenance misoperation.

Description

A smart safety interlocking system and method for electrical equipment in coal mines Technical Field

[0001] This invention relates to the field of electrical equipment safety monitoring technology, specifically to an intelligent safety interlocking system and method for electrical equipment in coal mines. Background Technology

[0002] Electrical equipment maintenance is a high-risk operation in daily production in coal mines.

[0003] However, in practice, numerous challenges exist, leading to frequent safety accidents:

[0004] (1) The process is disconnected from the physical execution. There is a separation between the management process of issuing and approving work permits and the physical isolation execution such as power outages and locking on site. Maintenance personnel may fail to strictly follow the instructions on the work permit due to negligence or to save trouble, or perform incorrect isolation operations, such as "the permit says equipment A, but equipment B is stopped on site", resulting in serious safety hazards of "incorrect permit" and "incorrect personnel".

[0005] (2) Over-reliance on manual confirmation and lack of objective verification methods: The execution status of safety measures (such as whether the power has been cut off or whether the power has been tested) depends entirely on the on-site operation and verbal reports of maintenance personnel. The dispatch center cannot objectively and effectively verify the actual status on site, and the reliability of the entire safety chain is entirely based on the reliability of "people", lacking technical supervision and guarantee.

[0006] (3) Lack of spatial awareness, unable to prevent accidental entry into dangerous areas: Traditional interlocking systems cannot actively identify whether maintenance personnel are moving within the designated safe area, nor can they prevent unrelated personnel from accidentally entering dangerous areas where power has been cut off but there are still live equipment nearby. This lack of spatial awareness creates a huge blind spot in safety management.

[0007] (4) Information silos make it difficult to trace and analyze: Work tickets, operation records, personnel information, etc. are scattered in different paper or electronic documents, forming information silos. Once an accident occurs, it is difficult to quickly and accurately trace the entire event chain, and it is also impossible to effectively analyze historical data to improve safety management strategies.

[0008] Application number CN202510698577.2 discloses a safety interlocking system and method for power outage and restoration operations. By integrating SCADA real-time data, a dynamic interlocking counter mechanism, and multiple safety verifications, it achieves precise interlocking management of disconnecting switchgear. The system generates unique operation command numbers based on a hash algorithm, dynamically renders the interlocking range using a visual interface, and supports multi-task overlay interlocking and priority strategies. Through triple protection—verifying the status of disconnecting switchgear during tagging, verifying the operation number during tag removal, and forcibly removing all tags before power restoration—it solves the problems of misoperation and live-line risks in traditional power outage and restoration operations, significantly improving the safety of power supply dispatching. Summary of the Invention

[0009] This invention aims to overcome the problem that existing technologies, whether single process management optimization or simple physical interlocking, fail to effectively and intelligently link and control the four core elements of "human-machine-environment-management" in electrical maintenance safety management. It provides an intelligent safety interlocking system and method for coal mine electrical equipment, which can deeply integrate personnel location, work permits, equipment status, and remote authorization, fundamentally eliminating the possibility of maintenance misoperation.

[0010] This invention provides an intelligent safety interlocking system for electrical equipment in coal mines, comprising:

[0011] Electronic work order management module: Used to create, approve, issue, and archive electrical equipment maintenance work orders and generate work order data, which is then transmitted to the AI ​​intelligent association and decision engine; the electronic work order management module is deployed on a ground server; the work order content includes maintenance task, maintenance location, maintenance equipment number, operator information, permitted work time, etc.

[0012] The interface module for the underground personnel precise positioning system is used to acquire the location information of underground maintenance personnel in real time and to transmit the location information to the AI ​​intelligent association and decision engine. The interface module for the underground personnel precise positioning system can acquire the three-dimensional coordinate information of a designated maintenance personnel (through the positioning tag they wear) in the underground roadway in real time and accurately.

[0013] Intelligent power supply unit interface module: used to connect and control downhole electrical equipment, to receive control commands transmitted by the AI ​​intelligent association and decision engine and to open or close the intelligent power supply unit according to the control commands; the intelligent power supply unit interface module can send remote "close" and "open" commands to these devices, and can read back their switch status and power information in real time;

[0014] AI Intelligent Association and Decision Engine: Used to receive work ticket data transmitted by the electronic work ticket management module, to receive location information transmitted by the underground personnel precise positioning system interface module, to perform "person-ground-ticket" three-in-one authentication based on work ticket data and location information and to generate control commands based on the authentication results, and to transmit control commands to the intelligent power supply unit interface module; the AI ​​Intelligent Association and Decision Engine is deployed in a ground data center or in the cloud.

[0015] The intelligent safety interlocking system for coal mine electrical equipment described in this invention, as a preferred embodiment, includes an AI intelligent association and decision engine comprising:

[0016] The automatic association submodule between work area and equipment is used to receive work order data transmitted by the electronic work order management module, map the maintenance location in the work order data to an electronic fence, and bind the maintenance equipment to the intelligent power supply unit.

[0017] Once an electronic work order is issued, the work area and equipment automatic association submodule automatically parses the text description of the maintenance location in the work order (such as "N1102 working face transport roadway transfer point"), and uses the preset mine geographic information system (GIS) to automatically map it to one or more physical areas (electronic fences) on the underground 3D map. At the same time, it uniquely binds the maintenance equipment number to the corresponding intelligent power supply unit.

[0018] The "Person-Location-Ticket" three-in-one verification submodule is used to receive the location information transmitted by the interface module of the underground personnel precise positioning system. It is used to verify whether the maintenance personnel have arrived at the designated area, whether there are no unrelated personnel in the maintenance area, and whether the work ticket data is in an authorized state before the power outage operation is performed, and to generate the verification result. It is used to transmit the verification result to the remote authorization and intelligent electronic disconnection module.

[0019] Before any power outage operation is performed, the "person-location-ticket" three-in-one verification submodule acts as the first security lock, executing strict and parallel mandatory verification logic:

[0020] Personnel verification: Through the interface module of the underground personnel precise positioning system, confirm that the designated maintenance personnel (at least one person) holding the work order has actually arrived near the preset maintenance area (electronic fence) (e.g., the distance is less than 10 meters).

[0021] Area verification: The interface module of the underground personnel precise positioning system is used again to scan and confirm that there are no unrelated or unauthorized personnel in the preset maintenance area (electronic fence).

[0022] Invoice Verification: Through the electronic work ticket management module, confirm that the work ticket has completed all approval processes and is in the "Permitted, Awaiting Work" status.

[0023] Remote authorization and intelligent power outage module: used for the verification results transmitted by the "person-place-ticket" three-in-one verification submodule, used to initiate a power outage request to the dispatch center authorization terminal when the verification result is passed, used to receive the power outage authorization sent by the dispatch center authorization terminal and perform power outage operation on the intelligent power supply unit according to the power outage authorization;

[0024] Only after the "person-location-ticket" three-in-one verification submodule has passed completely will the remote authorization and intelligent power disconnection module be activated, pushing a "request power outage" command containing all verification information to the computer terminal of the sole authorized person in the ground dispatch center (e.g., the on-duty dispatcher or chief engineer). The authorized person must remotely confirm through two-factor authentication (such as password + Ukey or digital signature). Once a valid authorization confirmation signal is received, the remote authorization and intelligent power disconnection module will send an encrypted "shut-off" command to the corresponding intelligent power supply unit (through the intelligent power supply unit interface module) to execute the power disconnection operation.

[0025] The intelligent safety interlocking system for coal mine electrical equipment according to the present invention, in a preferred embodiment, further includes:

[0026] Residual Energy Intelligent Detection and Release Device: Used to receive release commands transmitted by the AI ​​Intelligent Association and Decision Engine, and to release the residual voltage of the intelligent power supply unit to below the safety threshold according to the release command, and send a feedback confirmation signal to the AI ​​Intelligent Association and Decision Engine.

[0027] The residual energy intelligent detection and release device is an optional but preferred hardware device, usually integrated inside the intelligent switch cabinet. It includes a high-precision voltage detection module and a discharge circuit consisting of a power resistor and a control switch. After receiving the instruction from the AI ​​intelligent association and decision engine, the residual energy intelligent detection and release device will automatically close the discharge circuit, release the residual voltage on the device to below the safety threshold (e.g., 36V) within a few seconds (e.g., within 5 seconds), and send a confirmation signal back to the AI ​​intelligent association and decision engine.

[0028] The intelligent safety interlocking system for coal mine electrical equipment of the present invention, as a preferred embodiment, includes a residual energy intelligent detection and release device comprising a voltage detection module and a discharge circuit, wherein the discharge circuit comprises a power resistor and a control switch.

[0029] The intelligent safety interlocking system for coal mine electrical equipment described in this invention, as a preferred embodiment, further includes an AI intelligent association and decision engine that includes:

[0030] Residual Energy Release and Status Confirmation Submodule: Used to automatically trigger the residual energy release device and confirm that the intelligent power supply unit is in a safe state after the intelligent power supply unit is powered off.

[0031] After the intelligent power supply unit sends a "successful trip" signal, the residual energy release and status confirmation submodule immediately and automatically triggers the residual energy intelligent detection and release device associated with the equipment. The residual energy intelligent detection and release device is responsible for safely and quickly releasing the residual charge of the equipment (especially capacitors, cables, etc.). After the release is completed, the residual energy intelligent detection and release device feeds back the "zero voltage" safe status to the AI ​​intelligent association and decision engine. The AI ​​intelligent association and decision engine then marks the status of the equipment as "isolated and safe to operate" in the system, and notifies the maintenance personnel that they can start working through their smart terminal (such as an explosion-proof mobile phone) or voice broadcast.

[0032] The intelligent safety interlocking system for coal mine electrical equipment described in this invention, as a preferred embodiment, further includes an AI intelligent association and decision engine that includes:

[0033] The continuous monitoring submodule during the operation process is used to continuously monitor the location of personnel during maintenance and to issue alarms for abnormal situations.

[0034] Throughout the maintenance process, the continuous monitoring submodule monitors the location of maintenance personnel at a high frequency (e.g., once per second). If maintenance personnel are found to have left the preset safe working area, or if any unauthorized personnel enter the area, the system will immediately issue an alarm through the on-site audible and visual alarms and push alarm information to the dispatch center and the maintenance personnel's terminals. In extreme cases (such as when maintenance personnel do not respond for an extended period of time), the system can automatically cut off the power supply to the next higher level according to the contingency plan to expand the safe area.

[0035] In a preferred embodiment of the intelligent safety interlocking system for coal mine electrical equipment described in this invention, the AI ​​intelligent association and decision engine communicates with the electronic work order management module, the underground personnel precise positioning system interface module, the intelligent power supply unit interface module, and the residual energy intelligent detection and release device through a mining industrial ring network.

[0036] In a preferred embodiment of the intelligent safety interlocking system for coal mine electrical equipment described in this invention, underground maintenance personnel are equipped with underground personnel positioning tags, and the interface module of the underground personnel precise positioning system generates location information through the underground personnel positioning tags.

[0037] The intelligent safety interlocking system for coal mine electrical equipment described in this invention, as a preferred embodiment, includes an intelligent power supply unit comprising an intelligent feeder switch, an intelligent circuit breaker, or an isolating switch with an electric operating mechanism.

[0038] This invention provides an intelligent safety interlocking method for electrical equipment in coal mines, comprising the following steps:

[0039] S1. Job Association: The AI ​​intelligent association and decision engine analyzes the issued electronic work orders and intelligently associates and binds job permits, personnel, equipment, and geographical locations.

[0040] S2, Multi-dimensional verification: Before the power outage is executed, the AI ​​intelligent association and decision engine automatically performs a mandatory verification of the "person-place-ticket" three-in-one system. The mandatory verification includes personnel verification, area verification and ticket verification.

[0041] S3. Remote Authorization: After the mandatory verification is passed, the AI ​​intelligent association and decision engine initiates a remote power outage request to the dispatch center authorization terminal and waits for the dispatch center authorization terminal to complete the confirmation.

[0042] S4. Intelligent power-off and residual energy release: When authorized, the AI ​​intelligent association and decision engine remotely executes the power-off operation of the intelligent power supply unit and automatically completes the residual energy release and safety status confirmation.

[0043] S5. Continuous monitoring and alarm: During operation, the AI ​​intelligent association and decision engine continuously monitors the location of personnel and the status of the area, and provides real-time alarms and handling for abnormal situations.

[0044] S6. Power restoration: After maintenance is completed, the maintenance personnel initiate a "Request for power restoration" application. After the "person-location-ticket" verification and remote authorization by the dispatch center's authorized terminal, the power-closing operation is performed.

[0045] The present invention has the following beneficial effects:

[0046] (1) This invention achieves a mandatory closed loop between the process and physical execution, fundamentally eliminating the separation between the management processes such as the issuance and approval of work permits and the physical isolation execution such as power outages and locking on site. Through an AI engine, this invention deeply and mandatorily binds the "person-place-permit" three-in-one authentication of electronic work permits with the on-site power outage request initiated by the authorized terminal of the dispatch center when the verification result is passed. Any operation that does not conform to the work permit instructions (wrong person, wrong time, wrong location) will fail the system verification, thus preventing the execution of the power outage operation.

[0047] (2) The introduction of a spatial dimension greatly enhances safety. This invention is based on personnel precise positioning technology, which enables it to have spatial perception capabilities. The system not only cares about the status of the equipment itself, but also about the status of the "people" and the "area" around the equipment, realizing dynamic and three-dimensional management of the work area, and effectively preventing personnel from accidentally entering live areas or carrying out dangerous operations in the wrong locations.

[0048] (3) The authorization and supervision mechanism has been strengthened, and an "intelligent logic lock" has been added, making the safety responsibility chain clearer and more reliable. The "person-place-ticket" verification and remote authorization mechanism created by this invention transfers part of the decision-making power of on-site operations to the ground dispatch center and places it under its real-time supervision. This not only adds a rigorous and traceable "intelligent logic lock" to the traditional "tag and lock" system, but also makes the safety responsibility chain clearer, greatly reducing the possibility of accidents caused by unilateral judgment errors or violations of regulations by on-site personnel.

[0049] (4) It realizes closed-loop management of maintenance operations with full life cycle, full elements, and traceability. This invention covers the entire process from pre-operation permitting and in-operation monitoring to post-operation recovery, and incorporates all four major safety elements of "people, machines, environment, and management" into the scope of intelligent control. All operation steps, time, personnel, and location information are automatically and accurately recorded by the system (blockchain technology can be used to ensure immutability), providing a precise chain of evidence for accident investigation and valuable data support for subsequent safety management optimization.

[0050] (5) This invention can be widely applied to the safety management of maintenance operations of various electrical equipment in coal mines, including but not limited to: high voltage switchgear maintenance operations, transformer maintenance operations, cable line maintenance operations, mobile substation maintenance operations, feeder switch maintenance operations, and electrical maintenance operations of large equipment such as coal mining machines and tunneling machines. Attached Figure Description

[0051] Figure 1 is a diagram of an intelligent safety interlocking system for electrical equipment in a coal mine.

[0052] Figure 2 is a flowchart of an intelligent safety interlocking method for electrical equipment in coal mines.

[0053] Figure label:

[0054] 100. Electronic Work Permit Management Module; 200. Underground Personnel Precision Positioning System Interface Module; 300. Intelligent Power Supply Unit Interface Module; 400. AI Intelligent Association and Decision Engine; 410. Automatic Association Submodule of Work Area and Equipment; 420. "Person-Location-Permit" Three-in-One Verification Submodule; 430. Remote Authorization and Intelligent Electronic Disconnection Module; 440. Residual Energy Release and Status Confirmation Submodule; 450. Continuous Monitoring Submodule of Work Process; 500. Residual Energy Intelligent Detection and Release Device; 600. Underground Personnel Positioning Tag; 700. Intelligent Power Supply Unit; 800. Dispatch Center Authorization Terminal; 900. Mining Industrial Ring Network. Detailed Implementation

[0055] To facilitate understanding, some technical terms appearing in the embodiments are explained:

[0056] UWB (Ultra-Wideband): A wireless communication technology that can be used for high-precision positioning, with positioning accuracy down to the centimeter level.

[0057] GIS (Geographic Information System): A computer system used to collect, store, manage, analyze, and display geospatial data.

[0058] Electronic fence: A virtual geographical boundary that triggers corresponding actions when a target enters or leaves the area.

[0059] Two-Factor Authentication (2FA): A secure authentication method that requires users to provide two different types of authentication elements.

[0060] Blockchain: A distributed ledger technology characterized by decentralization, immutability, and traceability.

[0061] Residual energy: After an electrical device is powered off, the charge or energy that remains on the device due to the presence of energy storage components such as capacitors and inductors.

[0062] Feeder switch: A type of combined low-voltage electrical appliance commonly used in underground coal mines, integrating switching, protection, and monitoring functions.

[0063] Example 1, as shown in Figure 1, an intelligent safety interlocking system for coal mine electrical equipment includes:

[0064] Electronic work order management module 100: Used to create, approve, issue and archive electrical equipment maintenance work orders and generate work order data, and to transmit work order data to AI intelligent association and decision engine 400; Electronic work order management module 100 is deployed on a ground server; Work order content includes maintenance task, maintenance location, maintenance equipment number, operator information, permitted operation time, etc.

[0065] The underground personnel precise positioning system interface module 200 is used to acquire the location information of underground maintenance personnel in real time and transmit the location information to the AI ​​intelligent association and decision engine 400. The underground personnel precise positioning system interface module 200 can acquire the three-dimensional coordinate information of a designated maintenance personnel (through the positioning tag they wear) in the underground roadway in real time and accurately. The underground maintenance personnel are equipped with an underground personnel positioning tag 600, and the underground personnel precise positioning system interface module 200 generates location information through the underground personnel positioning tag 600.

[0066] The intelligent power supply unit interface module 300 is used to connect and control downhole electrical equipment, receive control commands transmitted by the AI ​​intelligent association and decision engine 400, and open or close the intelligent power supply unit 700 according to the control commands. The intelligent power supply unit interface module 300 can send remote "closing" and "opening" commands to these devices and can read back their switch status and power information in real time. The intelligent power supply unit 700 includes an intelligent feeder switch, an intelligent circuit breaker, or an isolating switch with an electric operating mechanism.

[0067] AI Intelligent Association and Decision Engine 400: Used to receive work ticket data transmitted by the electronic work ticket management module 100, and location information transmitted by the underground personnel precise positioning system interface module 200. It performs "person-location-ticket" three-in-one authentication based on the work ticket data and location information, generates control commands based on the authentication results, and transmits the control commands to the intelligent power supply unit interface module 300. The AI ​​Intelligent Association and Decision Engine 400 is deployed in a ground data center or cloud environment. The AI ​​Intelligent Association and Decision Engine 400 communicates with the electronic work ticket management module 100, the underground personnel precise positioning system interface module 200, the intelligent power supply unit interface module 300, and the residual energy intelligent detection and release device 500 through a mining industrial ring network 900. The AI ​​Intelligent Association and Decision Engine 400 includes:

[0068] The automatic association submodule 410 for work areas and equipment is used to receive work order data transmitted by the electronic work order management module 100, map the maintenance location in the work order data to an electronic fence, and bind the maintenance equipment to the intelligent power supply unit 700. When an electronic work order is issued, the automatic association submodule for work areas and equipment automatically parses the text description of the maintenance location in the work order (such as "N1102 working face transport roadway transfer point"), and uses the preset mine geographic information system (GIS) to automatically map it to one or more physical areas (electronic fences) on the underground three-dimensional map, while uniquely binding the maintenance equipment number to the corresponding intelligent power supply unit.

[0069] The "Person-Location-Ticket" integrated verification submodule 420 receives location information transmitted from the underground personnel precise positioning system interface module 200. Before a power outage operation, it verifies whether maintenance personnel have reached the designated area, whether there are no unauthorized personnel within the maintenance area, and whether the work permit data is in an authorized state, generating verification results. These results are then transmitted to the remote authorization and intelligent power outage module. Before any power outage operation, the "Person-Location-Ticket" integrated verification submodule 420 acts as the first safety checkpoint, executing strict and parallel mandatory verification logic.

[0070] Personnel verification: Through the underground personnel precise positioning system interface module 200, it is confirmed that the designated maintenance personnel (at least one person) holding the work order has actually arrived near the preset maintenance area (electronic fence) (e.g., the distance is less than 10 meters).

[0071] Area verification: The interface module 200 of the underground personnel precise positioning system scans and confirms that there are no unrelated or unauthorized personnel in the preset maintenance area (electronic fence).

[0072] Invoice verification: Through the electronic work order management module 100, confirm that the work order has completed all approval processes and is in the "permitted, awaiting work" status;

[0073] The remote authorization and intelligent power outage module 430 is used to transmit the verification results from the "person-location-ticket" three-in-one verification submodule 420. It initiates a power outage request to the dispatch center authorization terminal 800 when the verification result is successful. It also receives the power outage authorization from the dispatch center authorization terminal 800 and performs a power outage operation on the intelligent power supply unit 700 according to the authorization. The remote authorization and intelligent power outage module 430 is only activated after the "person-location-ticket" three-in-one verification submodule 420 has completely passed verification. It then pushes a "request power outage" command containing all verification information to the computer terminal of the sole authorized person at the ground dispatch center (e.g., the on-duty dispatcher or chief engineer). The authorized person must remotely confirm via two-factor authentication (e.g., password + Ukey or digital signature). Once a valid authorization confirmation signal is received, the remote authorization and intelligent power outage module sends an encrypted "shutdown" command to the corresponding intelligent power supply unit (through the intelligent power supply unit interface module) to perform the power outage operation.

[0074] The residual energy release and status confirmation submodule 440 is used to automatically trigger the residual energy release device and confirm that the intelligent power supply unit is in a safe state after the intelligent power supply unit 700 is powered off. After the intelligent power supply unit 700 sends a "successful trip" signal, the residual energy release and status confirmation submodule 440 immediately and automatically triggers the residual energy intelligent detection and release device associated with the device. The residual energy intelligent detection and release device 500 is responsible for safely and quickly releasing the residual charge of the equipment (especially capacitors, cables, etc.). After the release is completed, the residual energy intelligent detection and release device feeds back the "zero voltage" safe state to the AI ​​intelligent association and decision engine 400. The AI ​​intelligent association and decision engine 400 then marks the status of the device as "isolated and safe to operate" in the system and notifies the maintenance personnel that they can start working through the intelligent terminal (such as an explosion-proof mobile phone) or voice broadcast.

[0075] The continuous monitoring submodule 450 for the operation process is used to continuously monitor the location of personnel during maintenance and to alarm for abnormal situations. Throughout the maintenance period, the continuous monitoring submodule 450 for the operation process continuously monitors the location of maintenance personnel at a high frequency (e.g., once per second). Once it is found that maintenance personnel have left the preset safe working area, or any unauthorized personnel have entered the area, the system will immediately issue an alarm through the on-site audible and visual alarms and push alarm information to the dispatch center and the maintenance personnel's terminals. In extreme cases (such as when maintenance personnel do not respond for a long time), the power supply to the next higher level can be cut off according to the contingency plan to expand the safe range.

[0076] The residual energy intelligent detection and release device 500 is used to receive release commands transmitted by the AI ​​intelligent association and decision engine 400, and to release the residual voltage of the intelligent power supply unit 700 to below the safety threshold according to the release command, and send a feedback confirmation signal to the AI ​​intelligent association and decision engine 400. The residual energy intelligent detection and release device 500 is an optional but preferred hardware device, usually integrated inside the intelligent switch cabinet, including a high-precision voltage detection module and a discharge circuit composed of a power resistor and a control switch. After receiving the command from the AI ​​intelligent association and decision engine 400, the residual energy intelligent detection and release device will automatically close the discharge circuit, release the residual voltage on the device to below the safety threshold (e.g., 36V) within a few seconds (e.g., within 5 seconds), and send a feedback confirmation signal to the AI ​​intelligent association and decision engine 400.

[0077] Referring to Figure 2, this embodiment includes the following steps during use:

[0078] S1. Job Association: The AI ​​intelligent association and decision engine 400 analyzes the issued electronic work tickets and intelligently associates and binds job permits, personnel, equipment, and geographical location.

[0079] S2, Multi-dimensional verification: Before the power outage is executed, the AI ​​intelligent association and decision engine 400 automatically performs a mandatory verification of the "person-place-ticket" three-in-one system. The mandatory verification includes personnel verification, area verification and ticket verification.

[0080] S3. Remote Authorization: After the mandatory verification is passed, the AI ​​intelligent association and decision engine 400 initiates a remote power outage request to the dispatch center authorization terminal 800 and waits for the dispatch center authorization terminal 800 to complete the confirmation.

[0081] S4. Intelligent power-off and residual energy release: When authorized, the AI ​​intelligent association and decision engine 400 remotely executes the power-off operation of the intelligent power supply unit 700 and automatically completes the residual energy release and safety status confirmation.

[0082] S5. Continuous monitoring and alarm: During operation, the AI ​​intelligent association and decision engine 400 continuously monitors the location of personnel and the status of the area, and provides real-time alarms and handling for abnormal situations.

[0083] S6. Power restoration: After maintenance is completed, the maintenance personnel initiate a "Request for power restoration" application. After the "person-location-ticket" verification and remote authorization by the dispatch center's authorized terminal, the power-closing operation is performed.

[0084] Example 2, referring to Figure 2, includes the following steps during the overhaul of a high-voltage switchgear underground:

[0085] S1. Work Preparation and Association: The maintenance supervisor logs into the electronic work order management module 100 through the computer at the ground dispatch center and creates a new electrical equipment maintenance work order; the work order information includes:

[0086] Maintenance task: Replace the contactor of the high-voltage feeder switch (number: GK-N1102-01) at the transfer point of the N1102 working face;

[0087] Maintenance location: Transfer point of the transport roadway in the N1102 working face;

[0088] Equipment under maintenance: High-voltage feeder switch GK-N1102-01;

[0089] Workers: Zhang San (employee number 007), Li Si (employee number 008);

[0090] Permitted operation period: December 2, 2025, 14:00 - 16:00;

[0091] After the work order is approved online by the work area manager, the electromechanical department and other relevant personnel, the status changes to "issued, pending execution";

[0092] The AI ​​intelligent association and decision engine 400's work area and equipment automatic association submodule 410 detects a newly issued work order and immediately performs the following operations:

[0093] By calling the mine's GIS database, the location "N1102 working face transport roadway transfer point" is automatically generated into a spherical electronic fence with a radius of 15 meters on the 3D map.

[0094] Access the equipment ledger database and bind the equipment number "GK-N1102-01" with the IP address and control port of the intelligent power supply unit 700 deployed at this location;

[0095] The identity information of the workers Zhang San and Li Si is bound to the unique ID of the underground personnel positioning tag 600 they wear;

[0096] Step S2: On-site positioning and multi-dimensional verification: Maintenance personnel Zhang San and Li Si arrived at the transfer point of the transport roadway in the N1102 working face with their tools. The safety helmets they wore had underground personnel positioning tags 600 integrated on them.

[0097] The "person-location-ticket" three-in-one verification submodule 420 detects in real time, through the underground personnel precise positioning system interface module 200, that Zhang San and Li Si's positioning tag IDs have entered the preset electronic fence area; at the same time, the system scans the area and confirms that no other positioning tags exist; at this point, personnel verification and area verification are successful.

[0098] Zhang San scanned the QR code on the switch cabinet using his explosion-proof mobile app and submitted a "request to start work" command; the command was linked to the work order number, and the work order was verified.

[0099] Step S3: Remote Authorization: After the remote authorization and intelligent electronic disconnection module 430 confirm that the "person-location-ticket" three-in-one verification is passed, an authorization request window will immediately pop up on the authorization terminal 800 in the ground dispatch center; the window clearly displays: "Request to perform a power outage operation on equipment GK-N1102-01. Operators Zhang San and Li Si are already on site. There are no unrelated personnel in the area. Please authorize."

[0100] After the shift dispatcher verifies that the information is correct, they insert their own USB key, enter their personal password, and click the "Authorize Power Outage" button. The two-factor authentication is then successful.

[0101] Step S4: Intelligent power outage and safety confirmation: After receiving a valid authorization signal, the AI ​​intelligent association and decision engine 400 immediately sends an encrypted and verified "shutdown" command to the target intelligent power supply unit 700 through the mining industrial ring network 900 and the intelligent power supply unit interface module 300.

[0102] The intelligent power supply unit 700 performs the tripping operation and immediately returns a "successful tripping" status signal to the AI ​​intelligent association and decision engine 400;

[0103] The residual energy release and status confirmation submodule 440 is triggered, sending a start command to the residual energy intelligent detection and release device 500 integrated in the switch cabinet;

[0104] The residual energy intelligent detection and release device 500 first detects the voltage at the lower port of the switch and confirms that it is greater than the safe voltage of 36V; then it closes the internal discharge circuit to release the residual charge on the cable and equipment through the power resistor; within 5 seconds, the voltage drops to below 5V; the residual energy intelligent detection and release device 500 feeds back the "voltage safe" signal to the AI ​​intelligent association and decision engine 400.

[0105] The AI ​​intelligent association and decision engine 400 updated the status of device GK-N1102-01 in the system to "isolated, safe to operate", and broadcast through the on-site voice alarm: "Equipment GK-N1102-01 has been de-energized, the voltage test is normal, the residual energy has been released, and operation can begin." At the same time, Zhang San's explosion-proof mobile APP also received the same text message;

[0106] Step S5: Continuous Monitoring of the Work Process: Zhang San and Li Si begin the contactor replacement operation; the continuous monitoring submodule 450 continuously monitors their positions; at 14:30, the system detects that Li Si's location tag has moved 10 meters outside the electronic fence; the system immediately triggers the audible and visual alarm and broadcasts: "Worker Li Si has left the safe area, please return immediately!" At the same time, the dispatch center and Zhang San's mobile phone also receive alarm information; after Li Si returns, the alarm is deactivated.

[0107] Step S6: Power Restoration: At 15:30, the maintenance work is completed. Zhang San submits an application for "Work completed, request power restoration" via the explosion-proof mobile APP. The system restarts the "person-location-ticket" verification to confirm that all maintenance personnel have left the equipment and arrived at the designated safe waiting area. The system pushes an authorization request for "restore power" to the ground dispatch center's authorized terminal 800. After the dispatcher authorizes, the AI ​​engine sends a "close" command to the intelligent power supply unit 700 to restore power. The system updates the equipment status to "normal operation" and archives the work ticket.

[0108] The timestamps, personnel IDs, device IDs, operation instructions, status feedback, and authorized person information for all the aforementioned key steps are packaged into a single transaction and recorded on a private blockchain. This ensures the immutability and traceability of all operation records, providing the highest level of evidentiary support for security audits and incident analysis.

[0109] The above description is illustrative only and not restrictive of the present invention. Those skilled in the art will understand that any modifications, variations or equivalents that can be made without departing from the spirit and scope defined by the claims will fall within the protection scope of the present invention.

Claims

1. An intelligent safety interlocking system for electrical equipment in coal mines, characterized in that: include: Electronic work order management module (100): used to create, approve, issue, and archive electrical equipment maintenance work orders and generate work order data, and to transmit the work order data to the AI ​​intelligent association and decision engine (400); Downhole personnel precise positioning system interface module (200): used to obtain the location information of downhole maintenance personnel in real time, and to transmit the location information to the AI ​​intelligent association and decision engine (400); Intelligent power supply unit interface module (300): used to connect and control downhole electrical equipment, and to receive data from the AI ​​intelligent association and decision engine (400). The system transmits control commands and performs circuit breaking or closing on the intelligent power supply unit (700) according to the control commands; the AI ​​intelligent association and decision engine (400) is used to receive the work ticket data transmitted by the electronic work ticket management module (100), to receive the location information transmitted by the underground personnel precise positioning system interface module (200), to perform "person-ground-ticket" three-in-one authentication according to the work ticket data and the location information and generate the control commands according to the authentication results, and to transmit the control commands to the intelligent power supply unit interface module (300); The AI ​​intelligent association and decision engine (400) includes: an automatic association submodule (410) for work area and equipment: receiving work ticket data transmitted by the electronic work ticket management module (100), mapping the maintenance location in the work ticket data to an electronic fence, and binding the maintenance equipment to the intelligent power supply unit (700); and a "person-location-ticket" three-in-one verification submodule (420): receiving the location information transmitted by the underground personnel precise positioning system interface module (200), and verifying whether the maintenance personnel have arrived at the designated area before performing the power outage operation. The system checks whether there are no unrelated personnel in the repair area and whether the work ticket data is in an authorized state, and generates a verification result, which is used to transmit the verification result to the remote authorization and intelligent power outage module (430); the remote authorization and intelligent power outage module (430) is used to receive the verification result transmitted by the "person-place-ticket" three-in-one verification submodule (420), and to initiate a power outage request to the dispatch center authorization terminal (800) when the verification result is passed, and to receive the power outage authorization sent by the dispatch center authorization terminal (800) and perform a power outage operation on the intelligent power supply unit according to the power outage authorization.

2. The intelligent safety interlocking system for coal mine electrical equipment according to claim 1, characterized in that: Also includes: Residual Energy Intelligent Detection and Release Device (500): Used to receive the release command transmitted by the AI ​​Intelligent Association and Decision Engine (400), and to release the residual voltage of the intelligent power supply unit (700) to less than the safety threshold according to the release command and send a feedback confirmation signal to the AI ​​Intelligent Association and Decision Engine (400).

3. The intelligent safety interlocking system for coal mine electrical equipment according to claim 2, characterized in that: The residual energy intelligent detection and release device (500) includes a voltage detection module and a discharge circuit, wherein the discharge circuit includes a power resistor and a control switch.

4. The intelligent safety interlocking system for coal mine electrical equipment according to claim 2, characterized in that: The AI ​​intelligent association and decision engine (400) also includes a residual energy release and status confirmation submodule (440): used to automatically trigger the residual energy release device and confirm that the intelligent power supply unit (700) is in a safe state after the power is cut off.

5. The intelligent safety interlocking system for coal mine electrical equipment according to claim 2, characterized in that: The AI ​​intelligent association and decision engine (400) also includes: a continuous monitoring submodule (450) for the operation process: used to continuously monitor the location of personnel during maintenance and to alarm for abnormal situations.

6. The intelligent safety interlocking system for coal mine electrical equipment according to claim 4, characterized in that: The AI ​​intelligent association and decision engine (400) communicates with the electronic work ticket management module (100), the underground personnel precise positioning system interface module (200), the intelligent power supply unit interface module (300), and the residual energy intelligent detection and release device (500) through the mining industrial ring network (900).

7. The intelligent safety interlocking system for coal mine electrical equipment according to claim 4, characterized in that: The underground maintenance personnel are equipped with an underground personnel positioning tag (600), and the underground personnel precise positioning system interface module generates the location information through the underground personnel positioning tag (600).

8. The intelligent safety interlocking system for coal mine electrical equipment according to claim 4, characterized in that: The intelligent power supply unit (700) includes an intelligent feeder switch, an intelligent circuit breaker, or an isolating switch with an electric operating mechanism.

9. A locking method based on the intelligent safety interlocking system for coal mine electrical equipment according to any one of claims 1-8, characterized in that: Includes the following steps: S1. Job Association: The AI ​​intelligent association and decision engine (400) parses the issued electronic work order and intelligently associates and binds the job permit, personnel, equipment, and geographical location; S2. Multi-dimensional Verification: Before the power outage is executed, the AI ​​intelligent association and decision engine (400) automatically performs a mandatory verification of the "person-location-ticket" three-in-one system. The mandatory verification includes personnel verification, area verification, and ticket verification; S3. Remote Authorization: After the mandatory verification is passed, the AI ​​intelligent association and decision engine (400) initiates a remote power outage request to the dispatch center authorization terminal (800) and waits for the dispatch center authorization terminal (800) to complete the confirmation. S4. Intelligent power outage and residual energy release: After authorization, the AI ​​intelligent association and decision engine (400) remotely executes the power outage operation of the intelligent power supply unit (700) and automatically completes the residual energy release and safety status confirmation; S5. Continuous monitoring and alarm: During the operation, the AI ​​intelligent association and decision engine (400) continuously monitors the personnel location and area status, and provides real-time alarms and handling for abnormal situations; S6. Power restoration: After the maintenance is completed, the maintenance personnel initiate a "request for power restoration" application, and after the "person-place-ticket" verification and remote authorization by the dispatch center authorization terminal (800), the closing operation is executed.

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