Intelligent electrical screen cabinet safety anti-misoperation system

Abstract

The invention relates to the technical field of electrical safety protection, in particular to an intelligent electrical screen cabinet safety anti-misoperation system which comprises a mechanical coding lock, an electrical five-prevention operation background based on Li < ux >, a video image transmission module, LED display equipment and a sound-light alarm device. The system realizes screen cabinet door locking through a mechanical coding lock, and ensures authorized unlocking in combination with unique digital coding and authority management; the background generates an operation task and monitors a state; the video image transmission module provides remote monitoring and alarming functions; the LED display equipment distinguishes a working area from a non-working area by colors; and the sound-light alarm device is linked to prompt abnormal conditions. According to the invention, operators can be effectively prevented from mistakenly entering a non-working area, the working state is monitored in real time, and the operation and maintenance safety and efficiency of power equipment are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of safety protection of electric power equipment, and specifically relates to an intelligent safety and error prevention system for electric panel cabinets. Background Art

[0002] In power transmission and transformation operations, maintenance, and renovation projects, ensuring that workers operate within the correct working area is a crucial prerequisite for safety. Existing electrical cabinet security systems primarily rely on physical identification, mechanical locks, or simple electronic reminders. These methods have numerous practical limitations and are unable to fully meet the demands of intelligent and automated systems.

[0003] After searching, a safety fence with an alarm system to prevent accidental entry was disclosed with the publication number CN114961415B, and the publication date is August 1, 2023. This patent can effectively prevent unauthorized personnel from mistakenly entering dangerous areas by setting up a safety fence with an alarm system, and improves the stability of the fence through the design of sliders and limit bolts. However, this technical solution mainly focuses on physical protection and alarm functions, and lacks the ability to intelligently manage operations inside electrical cabinets. For example, the solution cannot monitor the operating status inside the cabinet in real time, nor can it realize the functions of authority management and operation records, and it is difficult to adapt to the security management needs in complex scenarios. In addition, its reliance on manual layout and maintenance may lead to inefficiency and increase operation and maintenance costs.

[0004] After searching, a kind of anti-error control system and method based on automated safety zone isolation interaction was disclosed with the publication number CN110829600B, and the publication date is October 20, 2023. This patent realizes comprehensive anti-error control in power grid operation by setting up safety zone 2 and safety zone 3, and combining the draft ticket module, the operation ticket review module and the network command module. However, this technical solution is mainly used in the field of power grid dispatching, and there are still limitations in the safety and anti-error management of electrical panels. For example, the solution does not involve the real-time monitoring and intelligent identification functions of the equipment inside the panel cabinet, and cannot effectively distinguish the specific operating conditions of the working area and the non-working area; at the same time, its complex multi-module linkage mechanism may increase the difficulty of system deployment and maintenance, and it is difficult to directly apply it to the safety management scenarios of small and medium-sized electrical panels.

[0005] The above issues indicate that existing electrical cabinet safety and security systems still have certain deficiencies in intelligent management, real-time monitoring, authority control, and operation logging. Therefore, the present invention provides an intelligent electrical cabinet safety and security system. This system integrates digitally coded locks, video transmission, audio and visual alarms, and intelligent monitoring capabilities to effectively distinguish between work and non-work areas, preventing operators from entering unauthorized areas. Furthermore, through real-time monitoring and recording of operational status, it further enhances safety management and meets the demands of modern power systems for efficient and intelligent safety management. Summary of the Invention

[0006] This invention addresses the technical challenges of complex safety measures, heavy workloads for operators, and long maintenance and renovation cycles in existing power transmission and transformation operations and renovation projects. By implementing this system, we propose an intelligent electrical cabinet safety and error prevention system. This system utilizes a mechanical code lock, a Linux-based five-protection electrical operation backend, a video transmission module, an LED display, and an audible and visual alarm system to effectively distinguish between maintenance and technical renovation work areas and non-work areas, preventing operators from mistakenly entering non-work areas and providing real-time monitoring of their work status.

[0007] The present invention provides an intelligent electrical panel cabinet security and anti-error system, including a mechanical coded lock, a Linux-based electrical five-protection operation background, a video image transmission module, an LED display device, and an audible and visual alarm device. The mechanical coded lock is used to realize the locking function of the electrical panel cabinet door, and multiple sets of pin structures are arranged inside it. The key tooth shape corresponds to the pin length one by one, and each lock is assigned a unique digital code. The lock code is expressed in binary or decimal form, and can only be rotated to unlock when the key tooth shape is completely matched with the lock cylinder pin. Furthermore, the mechanical coded lock has a built-in chip to store operation tickets and authority information, and is connected to the mechanical coded lock charging base through near-field communication technology (RFID / Bluetooth / NFC) or a physical interface to exchange data. A special emergency key is equipped in an emergency, which must be approved by multiple times before use to ensure the safety of the system in an emergency.

[0008] The Linux-based electrical five-protection operation background serves as the control center of the system, responsible for panel cabinet status monitoring, operation logic verification, authority management, and communication with the electronic key. Specifically, the background implements core functions through modular design, including a device monitoring module, a rule engine module, and a communication interface module. The device monitoring module is used to collect and process panel cabinet status information in real time; the rule engine module verifies whether the operation process meets the safety requirements according to the preset operation logic; and the communication interface module realizes reliable interaction with the electronic key and external system through the industrial protocol (Modbus / IEC 61850) and the secure communication protocol (HTTPS / MQTTover TLS). Furthermore, after the Linux-based electrical five-protection operation background generates an operation task, the operation steps are sent to the electronic key, and the operator receives the corresponding coded key to perform the unlocking task.

[0009] Furthermore, the video transmission module is used for remote monitoring and alarm functions. It uses a camera to capture images and transmits them to the SCADA host via a relay server. The SCADA host deploys a biometric recognition model to analyze the captured image frames and generate alarm commands. Specifically, the video transmission module pushes image frames in real time via the MQTT protocol, and the camera listens for MQTT commands and triggers alarm functions. This module is designed to monitor the work status of operators in real time and prevent unauthorized behavior.

[0010] The LED display is used to indicate active electrical compartment panels with green screens and inactive electrical compartment panels with red screens. Specifically, the Linux-based electrical five-protection operation backend generates image transformation instructions based on the operator's or code lock key's operating position and sends these instructions to the LED display, driving it to display the corresponding color. Furthermore, the LED display is powered by the existing panel, reducing reliance on external power and improving system adaptability.

[0011] The sound and light alarm device, located at the top of the cabinet's screen, provides voice and light prompts. When a worker approaches a non-working area, the device emits a warning sound and flashes lights, alerting the worker to safety. Specifically, the device is linked to the video transmission module, instantly initiating a prompt upon receiving an alarm command.

[0012] Furthermore, the intelligent electrical cabinet safety and error prevention system of the present invention can be integrated into the existing five-protection electrical system, enabling data exchange and functional expansion through standardized interfaces. This design significantly reduces the system's investment cost while enhancing its compatibility and scalability.

[0013] The present invention realizes the effective distinction between the electrical intervals of maintenance and technical transformation work and non-working areas through the above technical solutions, prevents operators from mistakenly entering non-working areas, and monitors their working conditions in real time. Specific technical effects include: S1, through the unique coding structure and mechanical matching mechanism of the mechanical coded lock, ensures that only authorized keys can unlock the corresponding electrical panel cabinet door, eliminating unauthorized unlocking behavior; S2, the Linux-based electrical five-protection operation background realizes efficient task generation, authority management and real-time monitoring functions through modular design and industrial protocol support; S3, the video transmission module combines biometric technology and MQTT protocol to provide accurate remote monitoring and rapid alarm capabilities; S4, the LED display device visually distinguishes the working area from the non-working area through color changes, simplifying the judgment process of the operators; S5, the sound and light alarm device uses voice and light prompts to promptly remind operators to pay attention to safety and avoid misoperation.

[0014] To sum up, the intelligent electrical panel cabinet safety and error prevention system of the present invention solves the problems of complex layout of traditional safety protection measures, heavy workload of operators and long inspection and modification cycle through multi-level and multi-module collaborative design, and significantly improves the efficiency and reliability of power equipment safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the current construction measures, showing the red curtains for operating equipment arranged in front, behind, left, and right of the work panel cabinet, and the "Work Here" sign hanging;

[0016] Figure 2 This is a schematic diagram of the layout of the intelligent electrical panel cabinet safety and error prevention system;

[0017] Figure 3 This is a schematic diagram of the components of the intelligent electrical panel cabinet safety and error prevention system;

[0018] Figure 4 This is a system architecture diagram showing the interaction between the equipment layer (sound and light cameras, electrical screen cabinet doors), the electrical five-protection operation background, and the operator / coded lock key;

[0019] Figure 5 This is a control flow chart for an LED display, describing the process of the electrical five-protection operation background sending image instructions to the LED display through the WebSocket server;

[0020] Figure 6 This is a control flow chart for the sound and light camera, showing how the electrical five-protection operation background sends alarm instructions to the sound and light camera through the WebSocket server and triggers the alarm.

[0021] The accompanying drawings are numbered as follows:

[0022] 1. Mechanical code lock; 2. Linux-based electrical five-protection operation background; 3. Video transmission module; 4. LED display device; 5. Sound and light alarm device; 6. Emergency key; 7. Lock cylinder pin structure; 8. Key tooth matching structure; 9. Near-field communication interface (RFID / Bluetooth / NFC); 10. Transfer server; 11. SCADA host; 12. Biometric recognition model; 13. MQTT protocol communication module; 14. WebSocket server; 15. LCD display; 16. Mechanical code lock charging photoelectric interface; 17. Sound and light camera module; 18. Non-operating interval screen eyebrow (red); 19. Operating interval screen eyebrow (green). DETAILED DESCRIPTION

[0023] The present invention provides an intelligent electrical panel cabinet safety and error prevention system, the technical solution of which is combined with Figures 1 to 6 The specific structure and functional modules of the system are described in detail. Through the coordinated functions of a mechanical code lock 1, a Linux-based electrical five-protection operation background 2, a video transmission module 3, an LED display device 4, and an audible and visual alarm device 5, the system can effectively distinguish between electrical compartments for maintenance and technical upgrade work and non-working areas in power transmission and transformation operations and renovation projects, preventing operators from mistakenly entering non-working areas and monitoring their work status in real time.

[0024] The design and implementation principles of the S1 mechanical code lock 1 are one of the core hardware elements of this system. The mechanical code lock 1 incorporates multiple sets of pin tumblers 7, with key profile matching structures 8 corresponding to the pins in the lock cylinder. Each lock is assigned a unique digital code, expressed in binary or decimal format. When a key is inserted into the lock, it can only be rotated to unlock the lock if the key profile matches the pins in the lock cylinder. For example, suppose a maintenance task requires opening the door of an electrical panel cabinet numbered "A1B1." The operator obtains an electronic key with the corresponding code. The key's built-in chip stores the operation ticket and authorization information. After the key is inserted into the lock, the profile is checked to see if it matches the pins in the lock cylinder. If so, the key can be rotated, unlocking the lock's internal mechanical structure and completing the unlocking operation. In case of emergency, a dedicated emergency key 6 is provided, requiring multiple approvals before use to ensure safety in emergencies. Furthermore, the mechanical code lock 1 connects to the mechanical code lock's charging photoelectric interface 16 via a near-field communication interface 9 (such as RFID / Bluetooth / NFC) or a physical interface to exchange data and synchronously update authorization information.

[0025] S2's Linux-based electrical five-protection operation backend 2 serves as the system's control center, responsible for panel cabinet status monitoring, operational logic verification, permission management, and communication with the electronic key. Specifically, this backend implements core functions through a modular design, including a device monitoring module, a rule engine module, and a communication interface module. The device monitoring module is used to collect and process panel cabinet status information in real time; the rule engine module verifies whether the operation process meets safety requirements based on preset operational logic; and the communication interface module achieves reliable interaction with the electronic key and external systems through industrial protocols (Modbus / IEC 61850) and secure communication protocols (HTTPS / MQTT over TLS). Taking a specific actual application as an example, when a maintenance task is generated, the electrical five-protection operation backend 2 generates operation steps based on the task and sends the steps to the electronic key. The operator receives the corresponding coded key to perform the unlocking task. The backend monitors the changes in panel cabinet status in real time and maintains data synchronization with the external SCADA host 11 through the communication interface module.

[0026] The S3 video transmission module 3 is designed for remote monitoring and alarm functions. It uses a camera 17 to capture images and transmits them to the SCADA host 11 through the relay server 10. The SCADA host 11 deploys a biometric recognition model 12 to analyze the captured image frames and generate alarm instructions. The specific operation process is as follows: the camera 17 pushes the image frames to the relay server 10 in real time through the MQTT protocol communication module 13, and the relay server 10 forwards the image frames to the SCADA host 11. The biometric recognition model 12 on the SCADA host 11 analyzes the image frames. If unauthorized behavior or abnormal conditions are detected, an alarm instruction is generated and returned to the camera 17 through the MQTT protocol communication module 13. After receiving the alarm instruction, the camera 17 immediately triggers the alarm function, such as starting the recording mode or issuing a warning signal. This module is designed to monitor the work status of the operators in real time and prevent unauthorized behavior.

[0027] The S4 LED display device 4 is designed to visually indicate that the electrical partition panel with work content is green, and the electrical partition panel in the non-working area is red. The specific implementation method is that the Linux-based electrical five-protection operation background 2 generates an image transformation instruction according to the working position of the operator or the coding lock key, and sends the instruction to the LED display device 4 through the WebSocket server 14. The LED display device 4 drives the LCD screen 15 to display the corresponding color, for example Figure 2In the scenario shown in Figure 2, the brow of the electrical compartment cabinet (19) with active work is displayed in green, while the brow of the cabinet (18) in the non-active area is displayed in red. Furthermore, the LED display device (4) is powered by the current cabinet, reducing reliance on external power and improving the system's usability. This design allows operators to quickly identify active and non-active areas, streamlining the operation process.

[0028] The S5 sound and light alarm device 5 is designed to provide voice prompts and light prompts, and is installed at the screen eyebrow of the screen cabinet. When the operator approaches the non-working area, the sound and light alarm device 5 emits a warning sound and flashes the light to remind the operator to pay attention to safety. The specific operation process is as follows: The sound and light alarm device 5 receives the alarm instruction from the electrical five-protection operation background 2 through the WebSocket server 14. After receiving the alarm instruction, the sound and light alarm device 5 immediately starts the prompt function, such as playing the voice prompt "Do not enter the non-working area" and flashing the red warning light. In particular, the sound and light alarm device 5 is linked with the video image transmission module 3, and immediately starts the prompt function after receiving the alarm instruction. This design can promptly remind the operator to pay attention to safety and avoid the occurrence of misoperation.

[0029] The overall operation process of the S6 system architecture is combined Figure 4 For explanation. The equipment layer includes hardware components such as the sound and light camera module 17, the electrical screen cabinet door, and the mechanical code lock 1. These components maintain data interaction with the Linux-based electrical five-protection operation background 2 through the communication interface. The operator or the code lock key establishes a connection with the mechanical code lock 1 through the near-field communication interface 9 or the physical interface to complete the authority verification and unlocking operation. At the same time, the electrical five-protection operation background 2 sends instructions to the LED display device 4 and the sound and light camera module 17 through the WebSocket server 14 to realize the image transformation and alarm triggering functions. The entire system architecture realizes data interaction and function expansion through standardized interfaces, which significantly reduces the investment cost of the system while enhancing its compatibility and promotion.

[0030] S7 In a specific application scenario, suppose a substation is undergoing a complex renovation project. To ensure that the operators are working within the correct construction scope, the operating tasks are first generated through the Linux-based electrical five-protection operation background 2, and the operating steps are sent to the electronic key. The operator receives the key with the corresponding code and goes to the designated electrical panel cabinet to unlock it. The mechanical code lock 1 verifies the key authority through the tooth matching mechanism and unlocks the panel cabinet door after the verification is passed. At this time, the LED display device 4 displays the panel cabinet eyebrow 19 in green according to the background instructions, while the other non-working area panel cabinet eyebrow 18 is displayed in red. During the operation, the video transmission module 3 collects images in real time through the camera 17 and transmits them to the SCADA host 11 for analysis. If unauthorized behavior is detected, the system immediately triggers the sound and light alarm device 5 to remind the operator to pay attention to safety. Throughout the process, each module works together to ensure that the operator is always in a safe working area.

[0031] Another key feature of the S8 system is its compatibility and scalability. Through standardized interface design, the intelligent electrical cabinet safety and anti-error system can be integrated into existing electrical five-protection systems, leveraging existing resources to expand functionality. For example, if a traditional five-protection system is already deployed in a substation, the S8 system can be integrated into it through standardized interfaces, enabling data sharing and functional complementarity. This design not only reduces system investment costs but also improves its applicability and promotional value.

[0032] In summary, the intelligent electrical panel cabinet safety and error prevention system of the present invention solves the problems of complex layout of traditional safety protection measures, heavy workload of operators, and long inspection and modification cycles through multi-level and multi-module collaborative design. During the specific implementation process, the mechanical code lock 1 ensures that only authorized keys can unlock the corresponding electrical panel cabinet door, eliminating unauthorized unlocking behavior; the Linux-based electrical five-protection operation background 2 realizes efficient task generation, authority management and real-time monitoring functions through modular design and industrial protocol support; the video image transmission module 3 combines biometric technology and MQTT protocol to provide accurate remote monitoring and rapid alarm capabilities; the LED display device 4 visually distinguishes the working area from the non-working area through color changes, simplifying the judgment process of the operator; the sound and light alarm device 5 uses voice and light prompts to promptly remind the operator to pay attention to safety and avoid misoperation. Through the above technical solutions, the present invention significantly improves the efficiency and reliability of power equipment safety protection, and has broad application prospects and promotion value.

Claims

1. An intelligent electrical panel cabinet safety and anti-error system, comprising a mechanical code lock (1), a Linux-based electrical five-protection operation background (2), a video image transmission module (3), an LED display device (4) and an audible and visual alarm device (5), characterized in that The mechanical coding lock (1) is used to realize the locking function of the electrical panel cabinet door. The Linux-based electrical five-protection operation background (2) is responsible for panel cabinet status monitoring and authority management as the control center of the system. The video transmission module (3) is used for remote monitoring and alarm functions. The LED display device (4) is used to indicate the working area and non-working area. The sound and light alarm device (5) is used to provide voice prompts and light prompts.

2. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that A plurality of pin structures (7) are arranged inside the mechanical coding lock (1), the key tooth matching structure (8) corresponds to the lock cylinder pins one by one, and each lock is assigned a unique digital code.

3. The intelligent electrical panel cabinet safety and error prevention system according to claim 2 is characterized in that The mechanical coding lock (1) has a built-in chip that stores operation tickets and authority information, and is connected to the mechanical coding lock charging photoelectric interface (16) via a near field communication interface (9) or a physical interface to exchange data.

4. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that The electrical five-prevention operation background (2) based on Linux realizes the functions of equipment monitoring module, rule engine module and communication interface module through modular design.

5. The intelligent electrical panel cabinet safety and error prevention system according to claim 4 is characterized in that The communication interface module enables reliable interaction with electronic keys and external systems through industrial protocols and secure communication protocols.

6. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that The video transmission module (3) uses a camera (17) to collect images and transmits them to a SCADA host (11) via a transfer server (10).

7. The intelligent electrical panel cabinet safety and error prevention system according to claim 6 is characterized in that The video transmission module (3) pushes image frames in real time through the MQTT protocol communication module (13), and the camera end monitors MQTT instructions and triggers the alarm function.

8. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that The LED display device (4) drives the liquid crystal display screen (15) to display corresponding colors according to the image conversion instruction generated by the Linux-based electrical five-protection operation background (2).

9. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that The sound and light alarm device (5) receives the alarm instruction from the electrical five-protection operation background (2) through the WebSocket server (14) and starts the prompt function.

10. The intelligent electrical panel cabinet safety and error prevention system according to claim 1 is characterized in that The system is connected to the existing electrical five-protection system through a standardized interface to achieve data interaction and function expansion.

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