A deadbolt security locking system and method

Abstract

The application discloses a locking and hanging plate safety locking system and method, which comprises a cabinet surface intelligent terminal, a network data platform connected with the cabinet surface intelligent terminal and a locking execution unit, the locking execution unit is installed at the locking position of the cabinet door of the disc cabinet and is in a rigid self-locking state by default, the network data platform is used for receiving safety measure information and delivering the safety measure information to the corresponding cabinet surface intelligent terminal, the cabinet surface intelligent terminal is used for collecting and verifying the identity information of the operating personnel, obtaining the disc cabinet equipment switch state information, verifying the consistency of the safety measure information, the disc cabinet equipment switch state information and the preset locking logic, and outputting an unlocking driving signal to the locking execution unit after successful verification, and the locking execution unit is used for executing an unlocking action in response to the unlocking driving signal to unlock the cabinet door of the disc cabinet, so that the complexity of the traditional LOTO technology is solved, and the efficiency of the operating personnel in laying safety measures and the rapid traceability of the misoperation accidents are simultaneously realized.

Description

Technical Field

[0001] This application relates to the field of electrical safety operation and interlocking control, specifically to a lock-and-tag safety interlocking system and method. Background Technology

[0002] LOTO (Lockout-Tagout) technology is a core safety measure in the industrial sector to ensure the safety of maintenance operations and is widely used in the manufacturing industry. Especially in scenarios such as power outage maintenance and testing of electrical equipment, LOTO is a key technical means to prevent accidental power restoration, misoperation, and accidental entry into energized areas. Traditional LOTO implementation schemes mainly rely on a combination of mechanical interlocking structures and manual control: using mechanical padlocks, chain locks, and lockboxes as the core interlocking carriers, supplemented by measures such as manual authorization verification, paper-based record keeping, on-site signage, and fencing to achieve operational control.

[0003] However, the aforementioned traditional solutions have many shortcomings in the power industry, especially in the scenario of power plant electrical panel maintenance, including: The reliability of interlocking is insufficient. Mechanical locks are easily dismantled by force and picked without authorization, and there are widespread management problems such as cross-authority borrowing, multiple uses of a single lock, and failure to remove locks. More importantly, traditional mechanical locks cannot be linked with electrical systems and lack electrical and logical interlocking capabilities, making it difficult to prevent unauthorized operations from a technical perspective.

[0004] The equipment status and interlocking logic are severely disconnected, and traditional methods cannot collect and monitor the opening and closing positions, grounding status, and safety measures implementation of circuit breakers and disconnectors inside the control panels in real time. This leads to frequent issues such as the same switch or valve being repeatedly tagged and inconsistencies between the logical state and the actual state, posing significant safety hazards.

[0005] Existing intelligent interlocking systems are limited in function and fail to form a closed-loop control system. Some improved intelligent interlocking systems are mostly limited to the electromagnetic lock control of a single cabinet door, unable to build a complete closed-loop control system, and thus cannot meet the stringent safety and standardization requirements of the power industry.

[0006] The level of digitalization is low, resulting in insufficient operation and maintenance efficiency and traceability. Existing substations still widely adopt traditional methods such as hanging signs and erecting fences. When facing large-scale unit overhauls involving numerous air circuit breaker operations, the efficiency of traditional LOTO (Location-Based Operation) is extremely low. Statistics show that hanging signs alone accounts for 40%-50% of the total operation time, which is time-consuming and labor-intensive. In addition, traditional measures have drawbacks such as the invisibility of operational behavior, the inability to store work data, and the lack of traceability of the execution process, leading to low efficiency in accident investigation and failing to meet the digital operation and maintenance needs of smart substations and intelligent industrial control sites. Summary of the Invention

[0007] This application provides a lockable tagging security interlocking system and method, which can solve the technical problems of insufficient interlocking reliability and disconnect between equipment status and interlocking logic in the prior art.

[0008] In a first aspect, embodiments of this application provide a lockable tag security interlocking system, the lockable tag security interlocking system comprising: The smart terminal on the counter, as well as the network data platform and the locking execution unit connected to the smart terminal on the counter, wherein the locking execution unit is installed at the locking position of the cabinet door and is in a rigid self-locking state by default; The network data platform is used to receive security measure information and send it to the corresponding smart terminal at the counter. The smart terminal on the counter is used to respond to the maintenance input command triggered by the operator, collect and verify the operator's identity information, obtain the switch status information of the panel equipment, and verify the consistency of the safety measures information, the switch status information of the panel equipment and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit. The locking execution unit is used to perform an unlocking action in response to the unlocking drive signal to unlock the cabinet door.

[0009] Secondly, embodiments of this application provide a lockable tag security interlocking method, the lockable tag security interlocking method comprising: Security information is received through a network data platform and then distributed to the corresponding smart terminals at the counter. The smart terminal at the counter responds to the maintenance input command triggered by the operator, collects and verifies the operator's identity information, obtains the switch status information of the panel equipment, and verifies the consistency of the safety measures information, the switch status information of the panel equipment, and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit. The locking execution unit is installed in the locked position of the cabinet door and is in a rigid self-locking state by default. The locking execution unit responds to the unlocking drive signal to perform an unlocking action to unlock the cabinet door.

[0010] This application provides a lockable tagging safety interlocking system and method. The system includes a smart terminal at the counter, a network data platform connected to the smart terminal, and an interlocking execution unit. The interlocking execution unit is installed in the locked position of the cabinet door and is in a rigid self-locking state by default. The network data platform receives safety measure information and sends it to the corresponding smart terminal at the counter. The smart terminal at the counter responds to maintenance input commands triggered by operators, collects and verifies the operator's identity information, obtains the switch status information of the cabinet equipment, and verifies the consistency of the safety measure information, the switch status information of the cabinet equipment, and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit. The interlocking execution unit responds to the unlocking drive signal to perform an unlocking action to unlock the cabinet door. This solves the technical problems in related technologies, such as insufficient reliability of mechanical interlocking, high risk of misoperation due to the disconnect between equipment status and interlocking logic, and low efficiency and untraceable process of manual verification. The beneficial effects of this application include: The system collects and verifies the identity information of operators through smart terminals at the counter, and uses the legality of the identity as a prerequisite for unlocking. Compared with traditional manual verification, this avoids the risks of impersonation and unauthorized operation, ensuring that only authorized personnel can unlock the correct equipment at the correct time.

[0011] By verifying the consistency of safety measures information, switch status information of control panels and cabinets, and preset interlocking logic, a deep binding between electrical logic and physical state is achieved. This effectively prevents the risk of misoperation caused by the disconnect between equipment status and interlocking logic, and avoids personnel accidentally entering live areas. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the lockout and tagging security interlocking system of this application. Figure 2 This is a schematic diagram showing the installation location of the smart terminal at the counter in this application; Figure 3 This is a schematic diagram showing the installation position of the electromagnetic lock in the locking execution unit of this application; Figure 4 This is the operating logic of the smart terminal at the counter in this application; Figure 5 This is the logic for displaying counter operations for this application; Figure 6 This is a flowchart illustrating the locking and tagging security interlocking method used in this application. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0014] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0015] In a first aspect, embodiments of this application provide a locking and tagging security interlocking method.

[0016] In one embodiment, reference is made to Figure 1 , Figure 1 This is a schematic diagram of the architecture of an embodiment of the lock-and-tag security interlocking system of this application. Figure 1 As shown, the system includes: a smart terminal on the counter, a network data platform, a locking execution unit, an online inspection unit, and an alarm notification unit. The smart terminal on the counter communicates with the network data platform via an industrial Ethernet or a private wireless network; the smart terminal on the counter, the locking execution unit, the online inspection unit, the alarm notification unit, and the visual indication unit form a closed-loop control system via electrical or communication connections. The locking execution unit is installed at the locked position of the cabinet door and is in a rigid self-locking state by default.

[0017] In one embodiment, the online inspection unit includes multiple passive status acquisition sensors. These passive status acquisition sensors are electrically connected one-to-one with circuit breakers, disconnect switches, grounding switches, and control circuit terminals inside the control panel, enabling comprehensive perception of the control panel's operating status.

[0018] Specifically, the passive status acquisition sensor uses auxiliary contact power or dry contact sampling, requiring no additional power supply to reflect the physical position of the switch contacts, possessing inherent safety and high anti-interference capability. The sensor collects real-time switch status information of the control panel equipment, including but not limited to: the opening and closing position signals, position change signals, and grounding status signals of circuit breakers, disconnectors, and grounding switches. The collected raw physical signals are processed by the signal conditioning circuit inside the line monitoring unit, and then converted into digitized status data through analog-to-digital conversion (ADC). Subsequently, this switch status information is transmitted to the central processing unit of the smart terminal on the control panel.

[0019] Subsequently, the central processing unit uses the switch status information of the control panel equipment as the core input parameter, executes the verification of preset interlocking logic, and determines whether the current equipment status meets the safety requirements. Simultaneously, the equipment status is pushed in real-time to the interactive display screen of the intelligent terminal on the control panel for visual display, allowing operators to intuitively understand the actual location of circuit breakers, disconnect switches, and grounding switches, achieving accurate mapping of equipment status. Furthermore, the equipment status data is synchronously transmitted to the backend network data platform for storage and archiving via industrial Ethernet or a private wireless network.

[0020] Through the above mechanism, this embodiment achieves uninterrupted online monitoring of the status of the control panel equipment. Compared with traditional manual inspections or methods relying solely on mechanical position indicators, this embodiment can capture switch change information in real time, ensuring that the system can make logical decisions based on the latest equipment status at any time, providing an accurate data foundation for subsequent safety interlocking and automatic correction.

[0021] In one embodiment, the network data platform is a data management system deployed on an industrial-grade local area network or in the cloud. It can achieve data interconnection and integration with the plant's existing Enterprise Production Management System (EPMS), intelligent ticketing system, and industrial internet platform. As the back-end control hub, this platform corresponds one-to-one with each front-end smart terminal and communicates through industrial Ethernet or wireless private network, forming the integrated front-end and back-end digital intelligent control architecture of this application.

[0022] The network data platform logically comprises a data storage module, an access control service module, a real-time monitoring module, and an operation log module. These modules work together to achieve identity data synchronization, remote access control, real-time status monitoring, and historical data tracing.

[0023] Specifically, the data storage module is configured to receive and store safety measure information from work orders (operation tickets). In practice, the system supports manual input or automatic interface import to input safety measures (such as instructions like "open switch A" or "close grounding switch B") from work orders into the system. In particular, this module supports data interconnection with the plant's existing intelligent two-ticket system and shift log system, automatically capturing and associating relevant safety measure data to avoid duplicate entry and ensure the uniqueness and accuracy of the data source. The stored data serves as the benchmark value for subsequent logical verification.

[0024] The access control service module is configured for unified management by the operations department, which is responsible for building and distributing a hierarchical access control database. Operations management personnel can flexibly configure operation permissions in the background based on job type (e.g., maintenance, testing), operator job level, and work area, and then distribute the generated hierarchical access control database to the corresponding smart terminals at the counter. This centralized management model replaces the traditional key distribution model, achieving precise binding of "person, authority, and position."

[0025] The real-time monitoring module is configured to achieve collaborative monitoring and logical conflict detection between the front-end and back-end. Specifically, the data storage module sends the switchgear identifiers and their target states (such as "open") involved in the safety measures information to the smart terminal at the counter. During operation, the real-time monitoring module receives the switchgear status information (actual state, such as "closed") reported by the smart terminal at the counter in real time, and compares and verifies the target state with the actual state on the platform side. When a logical conflict is detected (i.e., "inconsistent switch signals," for example, the safety measures require the switch to be open but it is actually closed), the real-time monitoring module immediately generates an alarm signal and pushes the alarm signal to the alarm notification unit, triggering a joint alarm at the site and remotely.

[0026] The operation log module is configured to achieve full-process traceability management. This module not only captures and records historical status data of the control panels and cabinets automatically collected by the system in real time, including but not limited to: control panel and cabinet switch status information, identity verification records, unlock timestamps, lock / reset timestamps, and various alarm event information; it also supports manual entry of special operation notes by administrators. All data is archived and stored through a time-series database, ensuring that in the event of a safety incident or violation, big data analysis can quickly locate the cause and reconstruct the entire operation process.

[0027] In one embodiment, such as Figure 2 and Figure 3 The smart terminal on the counter adopts an integrated structure of a central processing unit and a capacitive touch display screen, and has a built-in identity recognition module. This terminal can be installed independently on the cabinet door panel or integrated into a dedicated front-end monitoring cabinet on the side of a row of cabinets. The architecture of the smart terminal on the counter includes a hardware layer and a software layer running on top of the hardware layer.

[0028] The hardware layer of the smart terminal at the counter includes at least a central processing unit (CPU), a capacitive touchscreen display, and an identity recognition module. The CPU, as the terminal's computing core, is configured to execute various algorithmic logics and control the actions of peripheral circuits. The capacitive touchscreen display serves as the human-machine interface, displaying operation controls and equipment status information, and generating maintenance initiation or termination commands in response to operator touch operations. The identity recognition module integrates a facial recognition module and a contactless work card recognition module, used to physically collect the operator's biometric information (facial image) and electronic work card identity information. The software layer, embedded in the CPU's storage medium, includes an access control logic verification module and an automatic correction module.

[0029] The permission logic verification module has a built-in preset permission database and preset interlocking logic synchronized from the network data platform. This module mainly performs the following functions: receiving biometric information and work card information uploaded by the identity recognition module; verifying the legality of the operator's operating permissions based on the preset permission database; and outputting compliance control instructions upon successful verification. In experimental operation scenarios, this module is configured to perform dual permission verification, that is, comparing the identities of operators and maintenance personnel sequentially to ensure that personnel, permissions, and positions match.

[0030] The automatic calibration module, as the core closed-loop control module of the system, incorporates switch state matching calibration algorithms, permission validity calibration algorithms, interlocking logic calibration algorithms, operation timing calibration algorithms, and hardware self-test calibration algorithms. This module is configured to distinguish between routine maintenance operations and collaborative testing operations, and execute the corresponding calibration logic accordingly.

[0031] For routine maintenance scenarios, the automatic calibration module responds to compliance control commands output by the authorization logic verification module, verifying the consistency of safety measures information, switch status information of control panels and equipment, and preset interlocking logic. Only when all three are completely matched is the central processing unit allowed to output an unlock drive signal to the interlocking execution unit.

[0032] For scenarios involving collaborative testing operations, the automatic calibration module is configured to specifically calibrate the matching of test operation sequence, switch status information of control panels and equipment, preset interlocking logic, and safety measures. Testing can only proceed after verification. This is especially important in situations involving inconsistent switch statuses during testing, such as when the test requires closing a target switch, while the overall system maintenance safety measures require opening the target switch. In this case, the automatic calibration module generates an alarm signal and sends it to the alarm notification unit, triggering an alarm notification. The alarm is deactivated once the collaborative test is completed and the switch status returns to the state it was in during the overall system maintenance.

[0033] The explanatory safety measure information refers to the digital safety instructions derived from the work permit, including the target state requirements of the equipment within the maintenance scope, such as opening circuit breakers, closing earthing switches, etc. The interlocking logic refers to a pre-set logic judgment rule base based on the five-prevention rules for electricity, including logical constraints such as preventing opening and closing disconnectors under load, preventing hanging earthing wires on live equipment, etc. The test operation sequence refers to the sequence of operation steps and time constraints required to cooperate with the equipment test. When there is a conflict between the test requirement and the maintenance safety requirement, for example, the test requires closing the switch while the maintenance requires opening the switch, the automatic correction module determines it as a logic conflict, blocks the operation and generates an alarm signal.

[0034] Preferably, the automatic correction module is further configured to periodically compare the switch state information of the cabinet equipment with the safety measure information after the cabinet door is unlocked. Once an inconsistency is detected, for example, a logic conflict such as an erroneous opening / closing operation or a contradiction between test and maintenance requirements occurs, an alarm signal is immediately generated and the operation authority is locked until the switch state information of the cabinet equipment is consistent with the safety measure information again.

[0035] In one embodiment, the alarm prompting unit is communicatively connected with the cabinet-side intelligent terminal and the network data platform respectively. The alarm prompting unit is configured to, upon receiving an alarm signal, synchronously start acousto-optic warning, pop up a display window on the display screen of the cabinet-side intelligent terminal, and push messages on the network data platform, so as to realize three-level linked alarm.

[0036] Specifically, the central processing unit of the cabinet-side intelligent terminal is configured to monitor the operating state of the system in real time, and immediately output an alarm trigger signal when detecting an unauthorized unlocking operation, authority verification failure, mismatch between the switch state and the interlocking logic, test operation violation, communication link interruption or automatic correction abnormality. In response to the alarm trigger signal, the alarm prompting unit controls the acousto-optic alarm to start acousto-optic warning, pops up a window on the touch display screen to display the abnormality type and position information, and synchronously pushes the alarm information through the network data platform. Through the above mechanism, it is ensured that on-site operators, the terminal management interface and the back-end monitoring center can be aware of the abnormal situation at the same time, so as to realize all-round safety warning. In one embodiment, the interlocking execution unit adopts an encrypted electromagnetic drive door lock mechanism, which is fixedly installed at the locking position of the cabinet door. The interlocking execution unit is electrically connected with the central processing unit of the front-end cabinet-side intelligent terminal through hard wiring, so as to ensure the reliability and real-time performance of control signal transmission. The electromagnetic drive door lock mechanism is normally in a self-locking interlocking state, maintains rigid interlocking when no compliant authority instruction is issued, and cannot be forcibly opened by mechanical means, thereby realizing intrinsically safe physical interlocking.

[0037] Specifically, the unlocking and locking control logic is as follows: Only when the permission logic verification module passes the verification and the automatic correction unit confirms that the logic is compliant, the central processing unit outputs an unlocking drive signal, and the locking execution unit responds to the unlocking drive signal to perform the unlocking action, allowing the panel cabinet door to be opened.

[0038] After the work process is completed, the smart terminal at the counter also responds to the maintenance exit command triggered by the operator, collects and verifies the operator's identity information, and outputs a locking drive signal to the locking execution unit after successful verification. The locking execution unit responds to the locking drive signal and resets to a rigid self-locking state to lock the cabinet door.

[0039] Furthermore, the touchscreen display of the smart terminal at the counter is equipped with "Maintenance Initiation" and "Maintenance Exit" controls. During maintenance work, the operator triggers the "Maintenance Initiation" control to enter maintenance mode, and the system performs operator permission verification and lock / unlock operations. When normal operation or work is completed, the operator triggers the "Maintenance Exit" control to exit maintenance mode, and the system performs identity verification and controls the lock / unlock execution unit to reset, achieving routine safety lock / unlock management.

[0040] In a preferred embodiment, the lockable tagging security interlocking system of this example further includes a visual indicator unit. The visual indicator unit includes a multi-color light strip, which is disposed on the cabinet door panel or inside the cabinet and is communicatively connected to the smart terminal on the cabinet surface. The smart terminal on the cabinet surface is also used to control the display color of the multi-color light strip, wherein a first color is displayed when under maintenance, and a second color is displayed when in operation or isolated. In the specific implementation of this example, the first color is green, and the second color is red.

[0041] For example, the visual indication unit displays and indicates the following logic: During maintenance, the touch screen of the intelligent terminal on the cabinet of the unit under maintenance is set to a constantly lit state. The display screen of the cabinet under maintenance displays the character "Working Here" and a multi-color light strip is installed inside the cabinet door, displaying green to clearly indicate that the equipment is currently under maintenance. Operating cabinets need to be isolated from those under maintenance to prevent accidental entry and misoperation. Therefore, the display screen of the isolated cabinet and equipment under maintenance displays the character "Operating" and a multi-color light strip is installed inside the cabinet door, displaying red to warn whether the equipment is currently operating or isolated. Except for the units under maintenance, the displays of normally operating units are set to either be off or constantly lit, displaying the character "Operating," configured according to actual needs. Through the combination of the above visual indications and light strip colors, operators can intuitively distinguish between equipment under maintenance and operating equipment, significantly reducing the risk of misoperation.

[0042] In a specific embodiment, such as Figure 4 and Figure 5The routine maintenance operation procedure for the lock-and-tag safety interlocking system shown in this embodiment is as follows: During the work preparation phase, the work signatory enters safety measure information into the network data platform, including the switchgear numbers and target status requirements within the maintenance scope. Operating personnel review the safety measure information, and after approval, implement safety measures such as power outages and grounding for the corresponding systems in accordance with safety procedures.

[0043] During the maintenance and commissioning phase, the operator triggers the "Maintenance and Commissioning" control on the touch screen of the smart terminal on the cabinet. The screen displays the cabinet and switch number information to be maintained, and the operator verifies and confirms it on-site.

[0044] During the identity verification phase, the permission logic verification module verifies the operator's identity information and maintenance operation permissions, completing dual identity information collection through the facial recognition module and the work card recognition module. After successful verification, the system enters the operator operation lockout control mode.

[0045] During the unlocking execution phase, the automatic correction module initiates pre-calibration to verify the consistency of safety measures information, switch status information of the control panel equipment, and preset locking logic. Upon successful verification, the central processing unit outputs an unlocking drive signal to the locking execution unit, and the electromagnetic drive door lock mechanism performs the unlocking action, opening the control panel door.

[0046] During the operation monitoring phase, the online inspection unit monitors the switch status information of the control panel equipment in real time, the alarm notification unit monitors abnormal operating conditions in real time, and the automatic correction module performs closed-loop correction periodically. If an abnormal switch position information is detected, a signal is immediately transmitted to the alarm notification unit for alarm notification. The touch screen displays the type and location of the abnormality. On-site personnel correct any erroneous operations, and the next step of the operation can only proceed after the monitoring unit's detection status returns to normal.

[0047] During the visual indication phase, after the maintenance panel triggers the "Maintenance Initiation" control, the display screen will show the "Working Here" message continuously, and the light strip inside the panel will display green. After the isolated maintenance panel triggers the "Maintenance Exit" control, the display screen will show the "Operation" message continuously, and the light strip inside the panel will display red. For normally operating units, the display screen will be either off or constantly on showing the "Operation" message, and the light strip inside the panel will display red.

[0048] In another specific embodiment, the operation procedure for the cooperative testing of the lock-and-tag safety interlocking system of this embodiment is as follows: During the test preparation phase, the work signatory enters relevant safety measures information into the network data platform, including the switchgear numbers and target statuses involved in the multi-system, multi-stage switching operations during the test. Operational personnel review the safety measures information, and after approval, implement safety measures such as power outages and grounding for the corresponding systems in accordance with safety procedures.

[0049] During the four-stage identity verification process, when testing is required during maintenance, the system sequentially performs facial recognition of operators, employee ID card recognition of operators, facial recognition of maintenance personnel, and employee ID card recognition of maintenance personnel. During the dual-authority verification phase, the authorization logic verification module simultaneously verifies the management authorization of the operator and the operation authorization of the maintenance personnel. The system unlocks the test operation authorization only when both authorizations meet the requirements.

[0050] During the specialized calibration and conflict detection phase, the automatic calibration module performs specialized calibration on the matching of test operation sequence, switch status information of control panels and cabinets, preset interlocking logic, and safety measures. Test operations can only proceed after verification. This is especially important in cases involving inconsistent switch statuses during test operations, such as when the test operation requires closing the target switch, while the overall system maintenance safety measures require opening the target switch. In this case, the automatic calibration module determines it as a logical conflict, generates an alarm signal and sends it to the alarm notification unit for alerting, and simultaneously locks operation permissions until the logical conflict is resolved.

[0051] During the test completion and archiving phase, after the test is finished and both the operators and maintenance personnel have confirmed their identities, the system automatically resets the test permissions. The interlocking execution unit responds to the interlocking drive signal and returns to a rigid self-locking state. All operation records and calibration records are synchronously archived and stored through the operation log module of the network data platform.

[0052] The lockable tagging security interlocking system and method provided in this application achieve dual protection of electrical and logical interlocking by setting up an interlocking execution unit that is in a rigid self-locking state by default, and combining it with the authorization verification and logic check of the smart terminal at the counter. Compared with traditional mechanical padlocks, this system cannot be opened without a compliant command, technically eliminating the risks of unauthorized opening, unauthorized operation, and easy forcibly dismantling of mechanical locks or chaotic key management, significantly improving the reliability of the interlocking. At the same time, the system logic design meets the five electrical protection requirements, effectively preventing accidental entry into energized areas and misoperation accidents. Under the premise of ensuring safety, the automated unlocking process replaces the manual operation of traditional tag hanging, significantly improving the operational efficiency of safety measure deployment.

[0053] By constructing a hierarchical access control system, precise authority management for operation, maintenance, and testing personnel is achieved. Particularly in scenarios involving testing operations, the system employs a dual-access mandatory verification mechanism. Testing operation permissions are only unlocked after both the identity and permissions of the operation and maintenance personnel have been verified, clearly defining access boundaries and reducing the risks associated with testing operations. The operational logic is rigorous and compliant, meeting the requirements of power safety production regulations and ensuring the authenticity of the personnel's identities and the legality of their operations.

[0054] This system can interconnect with the existing intelligent ticketing system within the plant, integrating the entire process of operation ticketing, work ticket issuance, transfer, and termination into digital management. Operators can perform paperless operations via mobile terminals or system terminals, reducing manual data entry and paper-based processes. This not only improves work efficiency but also enhances the digitalization level of power infrastructure operation and maintenance, meeting the digital operation and maintenance needs of smart industrial control sites.

[0055] The online inspection unit collects real-time data on the switch status of control panels and the implementation of safety measures, deeply binding interlocking logic to equipment status. The front-end smart terminal displays equipment status information in real time, while the back-end network data platform synchronously archives it, achieving full-process status monitoring and data traceability. Management personnel can view operation logs, identity verification records, and alarm event information at any time, ensuring that operational actions are visible, data is storable, and processes are traceable, providing an accurate data foundation for accident investigation and safety analysis.

[0056] Secondly, this application also provides a method for locking and tagging security interlocking.

[0057] In one embodiment, reference is made to Figure 6 , Figure 6 This is a flowchart illustrating an embodiment of the lock-and-tag security interlocking method of this application. Figure 6 As shown, the locking and tagging security interlocking method includes: Step S1: Receive security measure information through the network data platform and send it to the corresponding smart terminal at the counter; Step S2: Respond to the maintenance input command triggered by the operator through the smart terminal on the counter, collect and verify the identity information of the operator, obtain the switch status information of the panel equipment, and verify the consistency of the safety measures information, the switch status information of the panel equipment and the preset interlocking logic. After successful verification, output an unlocking drive signal to the interlocking execution unit. Step S3: The locking execution unit is installed in the locked position of the cabinet door and is in a rigid self-locking state by default. The locking execution unit responds to the unlocking drive signal to perform an unlocking action to unlock the cabinet.

[0058] Furthermore, in one embodiment, the method further includes: The system collects the switch status information of the panel and cabinet equipment through the online inspection unit and transmits the switch status information of the panel and cabinet equipment to the smart terminal on the cabinet surface. The online inspection unit includes multiple passive status acquisition sensors, which are connected to the equipment switches inside the control panel. The switch status information of the control panel equipment includes the opening and closing position signals, change signals, and grounding status signals of the circuit breakers, disconnectors, and grounding switches of the control panel equipment.

[0059] Furthermore, in one embodiment, the step of receiving security measure information through a network data platform and distributing it to the corresponding smart terminal at the counter includes: The access control service module receives the hierarchical access control database and distributes it to the smart terminal at the counter. The real-time monitoring module sends the safety measures information to the smart terminal at the counter and receives the switch status information of the cabinet equipment reported by the smart terminal at the counter. It compares the switch status information of the cabinet equipment with the safety measures information and generates an alarm signal when the comparison is inconsistent. The operation log module records the historical status data of the control panel equipment, which includes the control panel equipment switch status information, identity verification information, unlocking time, lockout reset time, and alarm event information. The security measures information and the historical status data of the control panel equipment are stored through the data storage module.

[0060] Further, in one embodiment, the smart terminal at the counter includes a central processing unit, an identity recognition module and a display screen connected to the central processing unit. Responding to a maintenance initiation command triggered by an operator, the smart terminal collects and verifies the operator's identity information, obtains the switch status information of the control panel equipment, and verifies the consistency of the safety measures information, the switch status information of the control panel equipment, and the preset interlocking logic. Upon successful verification, it outputs an unlocking drive signal to the interlocking execution unit, including: The display screen provides an operating interface, generates maintenance and commissioning commands in response to the operator's operation, and displays the switch status information of the control panel equipment. The identity recognition module includes a face recognition module and a work card recognition module. After receiving the maintenance commissioning instruction, the identity recognition module collects the biometric information and electronic identity information of the operator's work card. The central processing unit verifies the identity information based on the hierarchical permission database, and verifies the consistency of the security measures information, the switch status information of the control panel equipment, and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit.

[0061] Furthermore, in one embodiment, the operators include operators and maintenance personnel, and the central processing unit includes an authorization logic verification module and an automatic correction module; The permission logic verification module verifies the biometric information and electronic identity information of the operator and the electronic identity information of the work card of the maintenance personnel in sequence based on the hierarchical permission database. The automatic calibration module matches and verifies the test operation sequence, switch status information of the control panel equipment, safety measures information and preset interlocking logic. It is configured to output an unlock drive signal when the verification is correct and generate an alarm signal when there is a logical conflict in the verification.

[0062] Furthermore, in one embodiment, the method also includes: After the cabinet door is unlocked, the automatic correction module periodically compares the switch status information of the cabinet equipment with the safety measures information. When an inconsistency is detected, an alarm signal is generated and the switch operation permission of the cabinet equipment is locked until the switch status information of the cabinet equipment is consistent with the safety measures information.

[0063] Furthermore, in one embodiment, the method also includes: Upon receiving the alarm signal, the alarm notification unit simultaneously activates audible and visual warnings, displays a pop-up window on the smart terminal's screen, and pushes messages to the network data platform.

[0064] Furthermore, in one embodiment, the method further includes: The smart terminal at the counter responds to the maintenance exit command triggered by the operator, collects and verifies the operator's identity information, and outputs a lockout drive signal to the lockout execution unit after successful verification. The locking execution unit is reset to a rigid self-locking state in response to the locking drive signal, thereby locking the cabinet door.

[0065] Furthermore, in one embodiment, the method further includes: The display color of the multi-color light strip is controlled by the smart terminal on the counter, wherein the first color is displayed in the maintenance state, and the second color is displayed in the running or isolation state; The visual indicator unit includes a multi-color light strip, which is installed on the cabinet door panel or inside the cabinet and is communicatively connected to the smart terminal on the cabinet surface.

[0066] The implementation of each step in the above-mentioned locking and tagging safety interlocking method corresponds to each step in the above-mentioned locking and tagging safety interlocking system embodiment, and its functions and implementation process will not be described in detail here.

[0067] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0068] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0069] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0070] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0071] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0072] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0073] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A lockable tagging security interlocking system, characterized in that, The lockable tagging security interlocking system includes: a smart terminal on the counter, and a network data platform and an interlocking execution unit connected to the smart terminal on the counter. The interlocking execution unit is installed at the locked position of the cabinet door and is in a rigid self-locking state by default. The network data platform is used to receive security measure information and send it to the corresponding smart terminal at the counter. The smart terminal on the counter is used to respond to the maintenance input command triggered by the operator, collect and verify the operator's identity information, obtain the switch status information of the panel equipment, and verify the consistency of the safety measures information, the switch status information of the panel equipment and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit. The locking execution unit is used to perform an unlocking action in response to the unlocking drive signal to unlock the cabinet door.

2. The lockable tagging security interlocking system as described in claim 1, characterized in that, The system also includes: an online inspection unit; The online inspection unit includes multiple passive status acquisition sensors, which are connected to the equipment switches inside the control panel. The online inspection unit is used to collect the switch status information of the panel equipment and transmit the switch status information of the panel equipment to the smart terminal on the cabinet. The switch status information of the control panel equipment includes the opening and closing position signals, change signals, and grounding status signals of the control panel equipment circuit breakers, disconnecting switches, and grounding switches.

3. The lockable tagging security interlocking system as described in claim 1, characterized in that, The network data platform includes: The access control service module is used to receive the hierarchical access control database and distribute it to the smart terminal at the counter. The real-time monitoring module is used to send the safety measure information to the smart terminal at the counter, and receive the switch status information of the cabinet equipment reported by the smart terminal at the counter, compare the switch status information of the cabinet equipment with the safety measure information, and generate an alarm signal when the comparison is inconsistent. The operation log module is used to record the historical status data of the control panel equipment. The historical status data of the control panel equipment includes the switch status information of the control panel equipment, identity verification information, unlocking time, lockout reset time and alarm event information. The data storage module is used to store the security measures information and the historical status data of the control panel equipment.

4. The lockable tagging security interlocking system as described in claim 3, characterized in that, The smart terminal at the counter includes: a central processing unit, an identity recognition module and a display screen connected to the central processing unit; The display screen is used to provide an operating interface, generate maintenance and commissioning instructions in response to the operator's operation, and display the switch status information of the control panel equipment; The identity recognition module includes a face recognition module and a work card recognition module, which are used to collect the biometric information and electronic identity information of the workers after receiving the maintenance commissioning instruction; The central processing unit is used to verify the identity information according to the hierarchical permission database, and to verify the consistency of the security measures information, the switch status information of the control panel equipment and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit.

5. The lockable tagging security interlocking system as described in claim 4, characterized in that, The operational personnel include operators and maintenance personnel, and the central processing unit includes: The permission logic verification module is used to verify the biometric information and electronic identity information of the operator and the electronic identity information of the work card of the maintenance personnel in sequence based on the hierarchical permission database. The automatic calibration module is used to match and verify the test operation sequence, switch status information of the panel equipment, safety measures information and preset interlocking logic. It is configured to output an unlock drive signal when the verification is correct and generate an alarm signal when there is a logical conflict in the verification.

6. The lockable tagging security interlocking system as described in claim 5, characterized in that, The automatic correction module is also used for: After the cabinet door is unlocked, the switch status information of the cabinet equipment is periodically compared with the safety measures information. When an inconsistency is detected, an alarm signal is generated and the switch operation permission of the cabinet equipment is locked until the switch status information of the cabinet equipment is consistent with the safety measures information.

7. The lockable tagging security interlocking system as described in claim 5, characterized in that, The system also includes: an alarm notification unit; The alarm notification unit is communicatively connected to the smart terminal at the counter and the network data platform, respectively. The alarm notification unit is configured to simultaneously activate audible and visual warnings, display a pop-up window on the smart terminal screen, and push messages from the network data platform when it receives the alarm signal.

8. The lockable tagging security interlocking system as described in claim 1, characterized in that: The smart terminal at the counter is also used to respond to the maintenance exit command triggered by the operator, collect and verify the operator's identity information, and output a locking drive signal to the locking execution unit after successful verification. The locking execution unit is also used to reset to a rigid self-locking state in response to the locking drive signal, so as to lock the cabinet door.

9. The lockable tagging security interlocking system as described in claim 1, characterized in that, The system also includes: a visual indication unit; The visual indicator unit includes a multi-color light strip, which is installed on the cabinet door panel or inside the cabinet and is communicatively connected to the smart terminal on the cabinet surface. The smart terminal on the counter is also used to control the display color of the multi-color light strip, wherein the first color is displayed in the maintenance state, and the second color is displayed in the running or isolation state.

10. A method for locking and tagging a security interlocking device, characterized in that, The locking and tagging security interlocking method includes: Security information is received through a network data platform and then distributed to the corresponding smart terminals at the counter. The smart terminal at the counter responds to the maintenance input command triggered by the operator, collects and verifies the operator's identity information, obtains the switch status information of the panel equipment, and verifies the consistency of the safety measures information, the switch status information of the panel equipment, and the preset interlocking logic. After successful verification, it outputs an unlocking drive signal to the interlocking execution unit. The locking execution unit is installed in the locked position of the cabinet door and is in a rigid self-locking state by default. The locking execution unit responds to the unlocking drive signal to perform an unlocking action to unlock the cabinet door.

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