Intelligent safety sign system with two-vote linkage

Abstract

This invention relates to an intelligent safety signage system linked to work permits and operation permits, belonging to the field of power system safety operation and intelligent maintenance technology. It includes an intelligent electronic safety signage and a back-end work permit / operation permit management module, connected via a communication network. The intelligent electronic safety signage comprises a control module, a communication module, a display module, a positioning identification unit, a power supply module, an electronic lock control interface, an authentication module, and a storage unit. The control module verifies and executes control commands, including controlling the display module to display specified warning information, outputting a locking signal through the electronic lock control interface to physically lock the power equipment, and feeding back the execution result to the back-end work permit / operation permit management system. This invention achieves an intelligent electronic signage system with automatic deployment and status synchronization of safety measures through deep system integration of work permits and operation permits.

Description

Technical Field

[0001] This invention relates to the field of power system safety operation and intelligent maintenance technology, and in particular to an intelligent safety sign system linked to two-tickets. Background Technology

[0002] At power work sites such as substations and power plants, displaying physical safety signs (such as "Do Not Close Switch, People Working" or "Working Here") is a core measure to ensure personnel safety. However, the current management model suffers from drawbacks such as heavy reliance on manual labor, low efficiency, and susceptibility to errors. Specific problems include:

[0003] 1. Manual operation, prone to errors and omissions: The hanging and removal of signs rely entirely on the memory and sense of responsibility of the personnel, which can easily lead to omissions, incorrect hanging, or forgetting to remove signs after the work is completed, resulting in the failure of safety measures and causing serious accidents such as accidental power supply.

[0004] 2. Information isolation and difficulty in traceability: The physical signage itself has no status record, and its status is disconnected from the work ticket and operation ticket (hereinafter referred to as "two tickets") system. When problems occur, it is impossible to quickly trace responsibility and restore the process.

[0005] 3. Chaotic multi-task collaboration: When the same equipment involves multiple work orders, multiple physical signs with the same content need to be hung, resulting in a messy site. When restoring power, the verification is cumbersome and prone to confusion.

[0006] 4. Low integration of existing technologies: Some "electronic signs" on the market can only remotely and manually control the displayed content, and have not been deeply coupled with the business processes of the two-ticket system, so they cannot achieve full-process automatic closed-loop management from invoicing, security measures execution to ticket termination. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides an intelligent safety signage system linked with two tickets, thereby automating and rigidifying the execution of safety measures and achieving real-time synchronization and closed-loop management of on-site physical status and back-end management information.

[0008] A smart safety sign system linked to two tickets includes a smart electronic safety sign and a back-end two-ticket management module, wherein the electronic safety sign and the back-end two-ticket management module are connected through a communication network;

[0009] The intelligent electronic safety sign comprises: a control module, a communication module, a display module, a positioning identification unit, a power module, an electronic lock control interface, an identity authentication module, and a storage unit;

[0010] The control module verifies and executes control commands, including displaying specified warning information through the control display module, outputting a locking signal through the electronic lock control interface to physically lock the power equipment, and feeding back the execution result to the background two-ticket management system.

[0011] The background two-ticket management module generates an operation data packet containing control instructions and associated ticket numbers according to the two-ticket process, and sends it to the designated smart electronic security sign via the communication network.

[0012] Furthermore, the intelligent electronic safety sign is also equipped with an alarm module, which is an audible and visual alarm. The control module controls the audible and visual alarm to emit alarm signals of different colors, frequencies, and volumes according to the alarm level.

[0013] Furthermore, the intelligent electronic safety sign is also equipped with a near-field communication module, which supports NFC sensing, making it convenient for on-site personnel to swipe cards to sign in or quickly confirm tasks.

[0014] Furthermore, the control module includes an edge computing unit configured with offline execution rules, enabling the smart electronic safety sign to autonomously maintain or change its status based on the last valid instruction stored locally and the preset offline rules when network communication is interrupted, and to synchronize operation records after the network is restored.

[0015] Furthermore, the control module is also used to implement multi-task aggregation display, specifically:

[0016] When multiple associated task instructions for the same device are received from the background two-ticket management system, the main display area of ​​the display module is controlled to display the highest priority security warning information, and the secondary information area displays all associated task ticket numbers and total numbers.

[0017] Furthermore, the identity authentication module is a fingerprint or facial recognition sensor, used to verify the identity of the operator during on-site operation, ensuring that the execution authority of the control command is consistent with the operator information specified in the two tickets.

[0018] Furthermore, the electronic lock control interface is a relay output interface or a standard communication interface, used to connect to the locking mechanism of the switchgear or an existing microcomputer anti-misoperation system.

[0019] Furthermore, the positioning identification unit is an RFID tag or QR code, used to uniquely bind to the target physical device during the installation phase.

[0020] Furthermore, the background two-ticket management module also includes a data analysis platform, which is used to mine and analyze the operation logs and equipment status data uploaded by the smart electronic safety sign to realize operation mode risk identification, equipment fault warning and battery life prediction.

[0021] Furthermore, the specific working process of the system is as follows:

[0022] Step S1, Binding Stage: The intelligent electronic safety sign is bound one-to-one with the designated power equipment in the background system through its positioning identification unit;

[0023] Step S2, Safety Measures Implementation Phase:

[0024] Step S21: The operator verifies the legitimacy of their identity through a mobile terminal or smart electronic safety sign, and performs safety sign control on the power equipment on the mobile terminal;

[0025] Step S22: The background two-ticket management system automatically finds the bound sign ID based on the location of the power equipment, generates an encrypted data packet containing instructions, associated work ticket number, operator, operation time, and digital signature, and sends it to the target sign via the network;

[0026] Step S23: After verifying the operator's identity and the legality of the command, the target intelligent electronic safety sign controls its display module to display warning information and outputs a locking signal through the electronic lock control interface to lock the power equipment; at the same time, the successful execution status is fed back to the background system to complete the closed loop.

[0027] Step S3, Safety Measures Deactivation Phase:

[0028] Step S31: When the associated work ticket or operation ticket is terminated, the background two-ticket management system determines whether the device is associated with other unterminated tickets;

[0029] Step S32. If none, send a release command to the corresponding sign, the sign will return to its default state and the device will be unlocked; if yes, only update the display information and keep the device locked.

[0030] The beneficial effects of this invention are reflected in:

[0031] 1. Safety aspects: It greatly reduces the risk of safety accidents caused by human error, and improves the level of safety by enforcing the accurate implementation of safety measures through technical means and preventing illegal operations through multiple identity authentication.

[0032] 2. Efficiency: The management time for safety measures is reduced from hours to minutes, significantly reducing the workload of personnel, and offline autonomy avoids work stoppages caused by network problems;

[0033] 3. Management level: Achieve comprehensive, precise, and traceable management of security measures, providing data support for lean management and intelligent decision-making;

[0034] 4. Economic benefits: Predictive maintenance helps avoid significant economic losses caused by operational errors. It also reduces the total lifecycle cost of equipment.

[0035] 5. Compatibility: The open interface design makes the system easy to promote in existing substations and reduces the cost of modification. Attached Figure Description

[0036] Figure 1 This is a system architecture diagram of the present invention;

[0037] Figure 2 This is a schematic diagram of the screen interface layout of the intelligent safety sign of the present invention;

[0038] Figure 3 This is a structural diagram of the intelligent safety sign of the present invention. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In this embodiment, as Figure 1 As shown, an intelligent safety sign system linked with two tickets includes an intelligent electronic safety sign and a back-end two-ticket management module. The electronic safety sign and the back-end two-ticket management module are connected through a communication network.

[0041] The background two-ticket management module generates an operation data packet containing control instructions and associated ticket numbers according to the two-ticket process, and sends it to the designated smart electronic security sign through the communication network.

[0042] The intelligent electronic security sign comprises: a control module, a communication module, a display module, a positioning identification unit, a power module, an electronic lock control interface, an identity authentication module, and a storage unit. Specifically:

[0043] 1) Control Module (MCU / Processor): The brain of the system, responsible for instruction parsing, logic judgment, and equipment control. It includes an edge computing unit, supports a lightweight rule engine, and can make autonomous decisions based on the local clock and preset strategies in offline mode. It verifies and executes control instructions, including controlling the display module to display specified warning information, outputting locking signals through the electronic lock control interface to physically lock the power equipment, and feeding back the execution results to the background two-ticket management system.

[0044] 2) Communication module: Supports 4G / 5G, Wi-Fi, LoRa, etc., for communication with the backend.

[0045] 3) Display Module: Employs a color e-ink screen or industrial-grade LCD for displaying text and graphic symbols. Equipped with an ambient light sensor to automatically adjust screen brightness, ensuring clear visibility in both bright and dim environments.

[0046] 4) Location Identification Unit: Built-in RFID tag or QR code. Enables "device binding," ensuring that each identification tag is associated with a unique physical device location within the system.

[0047] 5) Power module: High reliability design, including a large-capacity lithium battery, and optional solar charging panel, supporting low battery reporting.

[0048] 6) Electronic lock control interface: Provides relay output or communication interface for direct control of the switchgear's locking coil or connection to a microcomputer-based anti-misoperation system to achieve physical locking. The interface supports multiple protocols and is compatible with equipment from mainstream manufacturers.

[0049] 7) Alarm Module: Audible and visual alarm for abnormal status alerts. The alarm signal can be configured with different colors, frequencies, and volumes according to the alarm level (prompt, warning, emergency).

[0050] 8) Storage unit: Used for local storage of operation logs, supporting resume download after network interruption.

[0051] 9) Identity Authentication Module: Integrates fingerprint or facial recognition sensors, supporting two-factor authentication for on-site operators. Used to verify the operator's identity during on-site operations, ensuring that the execution authority of the control commands matches the operator information specified in the two tickets.

[0052] 10) Near Field Communication Module: Supports NFC sensing, making it convenient for on-site personnel to swipe cards to sign in or quickly confirm tasks.

[0053] The control module is also used to implement multi-task aggregation display. Specifically, when multiple associated task instructions for the same device are received from the backend two-ticket management system, the main display area of ​​the display module displays the highest priority safety warning information, and the secondary information area displays all associated task ticket numbers and total numbers. For example, scenario: Device A has a "Do Not Close" sign due to work ticket P001, and work ticket P002 also needs to have the same sign on the same device. Processing: The backend system sends the association instruction for P002 to the same sign. The sign control module recognizes the multiple tasks and starts the aggregation display mode (main display area: continuously displays "Do Not Close". Secondary information area: displays "Associated work tickets: P001, P002 | Total: 2"). Advantages: One electronic sign replaces multiple physical signs, and the information is centralized and clear. The sign can display detailed information of all associated work tickets in a list or carousel format in the secondary information area, supporting on-site personnel to quickly view via NFC or touch screen.

[0054] In this embodiment, the background two-ticket management module also includes a data analysis platform, which is used to mine and analyze the operation logs and equipment status data uploaded by the smart electronic safety sign, including: first, identifying high-risk operation modes (such as frequent sign hanging and overtime operation); second, statistically analyzing the failure rate of signs and interlocking devices and issuing early warnings of potential failures; third, predicting the remaining lifespan based on the battery discharge curve and proactively prompting replacement; and fourth, generating equipment health reports to assist in operation and maintenance decisions.

[0055] In this embodiment, under normal conditions (i.e., when there is no maintenance task), the sign is in its initial state. Relay KA1 in the sign is not energized, and its normally closed contact remains closed. This normally closed contact is connected in series in the closing control circuit. At this time, the switchgear's closing circuit is complete, and normal opening and closing operations can be performed. Sign-on lockout state (equipment maintenance): When the system issues a "sign-on" command, the relay KA1 coil is energized through the electronic lock control interface. The relay's normally open contact closes, supplying power to the intelligent sign, causing it to light up and display a warning message; the relay's normally closed contact opens, physically cutting off the closing circuit, preventing opening and closing operations.

[0056] In this embodiment, the intelligent electronic safety sign is as follows: Figure 2 and Figure 3 As shown, the main display area occupies the visual center, dynamically displaying the highest priority safety warning signs and icons. The status bar, located at the top, displays the device number, communication signal strength, power status, and time in real time. Secondary information displays associated work order information (associated work order number, work supervisor, quantity). The operation guidance area provides information such as QR code scanning, emergency contacts, and operation prompts.

[0057] In this embodiment, the system operation process is as follows:

[0058] (1) Binding stage: The intelligent electronic safety sign is bound one-to-one with the designated power equipment in the background system through its positioning identification unit; for example, during installation, a handheld terminal is used to scan the RFID of the sign and the asset QR code on the switch cabinet to complete the one-to-one binding in the background system and mark it in the primary wiring diagram or 3D model of the station. At the same time, the biometrics and permission roles of the operators are recorded;

[0059] (2) Implementation of safety measures (signage and lockout):

[0060] Triggering: Before operation, fingerprint / facial verification is required via terminal or signage to ensure the operator matches the person assigned on the work order. The operator executes the step "Hang the 'Do Not Close' sign on XX equipment" in the work order on the mobile work order terminal.

[0061] Command generation and issuance: The background two-ticket management system generates and issues control command data packets for specific equipment according to the two-ticket process; specifically: the two-ticket system automatically finds the bound sign ID according to the location of the equipment, generates an encrypted data packet containing the command (such as displaying "Do not close"), associated work ticket number, operator, operation time, and digital signature, and issues it to the target sign via the network.

[0062] Local Execution and Feedback: After verifying the legality of the command, the signage control module executes: a. Displaying the specified content on the screen. b. (If locking is required) Outputting a locking signal through the electronic lock interface to physically lock the device. c. Feeding back the "Executed" status to the backend to complete the closed loop. If the network is interrupted, the signage continues to maintain its status based on the last valid command stored locally and preset rules (such as "offline execution allowed for 24 hours"), and synchronizes the operation records after the network is restored.

[0063] (3) Safety measures removal phase:

[0064] Trigger: Work ticket P001 terminated.

[0065] Logical judgment: The backend system determines whether there are any other unresolved related tickets (such as P002) on device A.

[0066] If not: Automatically send a "cancel" command to the sign, the sign will return to its default state and the device will be unlocked.

[0067] If there are still any: only update the displayed information (e.g., change it to "Associated work ticket: P002 | Total: 1"), and keep it locked. It will only be finally released when all tickets have been terminated.

[0068] If measures need to be lifted during a network outage, the sign will determine the appropriate action based on local rules: if all associated tickets have expired, the default state can be automatically restored, and the records will be cached for later uploading.

[0069] (4) Multi-task aggregation display logic:

[0070] Scenario: Equipment A has already been marked with a "Do Not Close" sign due to work order P001. At this time, work order P002 also needs to be marked with the same sign on the equipment.

[0071] Process: The backend system sends the P002 association command to the same signboard. The signboard control module recognizes the multi-task and initiates the aggregated display mode.

[0072] Main display area: Continuously displays "Do not close".

[0073] Secondary information area: Displays "Related work tickets: P001, P002 | Total: 2".

[0074] Advantages: One electronic card replaces multiple physical cards, providing centralized and clear information.

[0075] The signage can display detailed information on all associated work tickets in a list or carousel format in the secondary information area, allowing on-site personnel to quickly access the information via NFC or touchscreen.

[0076] (5) Anomaly monitoring:

[0077] Conflict Alarm: If a sign detects that it has been illegally powered off or removed, and the system indicates that it should be in a "suspended" state, an immediate local audible and visual alarm will be triggered and the information will be reported to the platform.

[0078] Alarm levels are classified by risk: alert alarms (such as low battery) are slow yellow flashing; serious alarms (such as unauthorized removal) are fast red flashing with voice announcement.

[0079] Full traceability: All received and executed commands are time-stamped and stored locally and in the cloud. A QR code is provided on the signage casing; scanning it allows viewing the complete operation history.

[0080] This invention achieves the following:

[0081] 1. Deep Business Process Integration: It is not a simple remote display and control, but rather an on-site automatic execution terminal for the two-ticket system, receiving instructions from standard operating procedures to achieve business process-driven automatic control.

[0082] 2. Dual prevention of errors through "software and hardware combination": On the software side, the system logic prevents the issuance of false commands; on the hardware side, the electronic lock interface enables physical forced locking of the equipment, forming a rigid constraint of "human prevention + technical prevention".

[0083] 3. Intelligent information aggregation and status management: The unique multi-task aggregation display and priority management logic effectively solves the management problem of multiple signs in the same location and intuitively reflects the complex on-site operation relationships.

[0084] 4. Identity binding and end-to-end traceability: Initial RFID binding ensures accurate delivery of instructions. End-to-end digital traceability creates an unalterable and secure "black box" for operations.

[0085] 5. Edge computing and offline autonomy: The signage has a built-in edge rule engine that can autonomously maintain its state and record logs when communication is interrupted, and automatically synchronize after the network is restored, significantly improving the system's robustness.

[0086] 6. Multi-factor authentication and access control: Integrating biometrics and dynamic tokens to achieve strong binding of "person-ticket-operation" and prevent impersonation and unauthorized use.

[0087] 7. Open interface and compatibility design: Supports multiple protocols and can be seamlessly integrated with existing anti-misoperation systems and interlocking mechanisms of switchgear from different eras, reducing the difficulty of retrofitting.

[0088] 8. Data-driven predictive maintenance: Based on historical data mining, it upgrades from status monitoring to proactive early warning, improving the level of intelligent operation and maintenance.

[0089] 9. User-friendly human-computer interaction: adaptive display, graded sound and light alarms, and NFC quick interaction adapt to various on-site working conditions, improving operating efficiency and experience.

[0090] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent safety signage system linked to two tickets, characterized in that, It includes an intelligent electronic safety sign and a back-end ticket management module, wherein the electronic safety sign and the back-end ticket management module are connected through a communication network; The intelligent electronic safety sign comprises: a control module, a communication module, a display module, a positioning identification unit, a power module, an electronic lock control interface, an identity authentication module, and a storage unit; The control module verifies and executes control commands, including displaying specified warning information through the control display module, outputting a locking signal through the electronic lock control interface to physically lock the power equipment, and feeding back the execution result to the background two-ticket management system. The background two-ticket management module generates an operation data packet containing control instructions and associated ticket numbers according to the two-ticket process, and sends it to the designated smart electronic security sign via the communication network.

2. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The intelligent electronic safety sign is also equipped with an alarm module, which is an audible and visual alarm. The control module controls the audible and visual alarm to emit alarm signals of different colors, frequencies and volumes according to the alarm level.

3. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The intelligent electronic safety sign is also equipped with a near-field communication module, which supports NFC sensing, making it convenient for on-site personnel to swipe cards to sign in or quickly confirm tasks.

4. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The control module includes an edge computing unit and is configured with offline execution rules, enabling the smart electronic safety sign to autonomously maintain or change its status based on the last valid instruction stored locally and the preset offline rules when network communication is interrupted, and to synchronize operation records after the network is restored.

5. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The control module is also used to implement multi-task aggregation display, specifically: When multiple associated task instructions for the same device are received from the background two-ticket management system, the main display area of ​​the display module is controlled to display the highest priority security warning information, and the secondary information area displays all associated task ticket numbers and total numbers.

6. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The identity authentication module is a fingerprint or facial recognition sensor used to verify the identity of the operator during on-site operation, ensuring that the execution authority of the control command is consistent with the operator information specified in the two tickets.

7. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The electronic lock control interface is a relay output interface or a standard communication interface, used to connect to the locking mechanism of the switch cabinet or an existing microcomputer anti-misoperation system.

8. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The positioning identification unit is an RFID tag or QR code, used to uniquely bind to the target physical device during the installation phase.

9. The intelligent safety signage system linked with two tickets according to claim 1, characterized in that, The background two-ticket management module also includes a data analysis platform, which is used to mine and analyze the operation logs and equipment status data uploaded by the smart electronic safety sign to realize operation mode risk identification, equipment fault warning and battery life prediction.

10. A smart safety signage system linked to two tickets according to any one of claims 1 to 9, characterized in that, The system's working process is as follows: Step S1, Binding Stage: The intelligent electronic safety sign is bound one-to-one with the designated power equipment in the background system through its positioning identification unit; Step S2, Safety Measures Implementation Phase: Step S21: The operator verifies the legitimacy of their identity through a mobile terminal or smart electronic safety sign, and performs safety sign control on the power equipment on the mobile terminal; Step S22: The background two-ticket management system automatically finds the bound sign ID based on the location of the power equipment, generates an encrypted data packet containing instructions, associated work ticket number, operator, operation time, and digital signature, and sends it to the target sign via the network; Step S23: After verifying the operator's identity and the legality of the command, the target intelligent electronic safety sign controls its display module to display warning information and outputs a locking signal through the electronic lock control interface to lock the power equipment; at the same time, the successful execution status is fed back to the background system to complete the closed loop. Step S3, Safety Measures Deactivation Phase: Step S31: When the associated work ticket or operation ticket is terminated, the background two-ticket management system determines whether the device is associated with other unterminated tickets; Step S32: If not, send a release command to the corresponding sign, the sign will be restored to its default state and the device will be unlocked; if yes, only update the display information and keep the locked state.

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