Double-interlocking logic AB type latch hook for safety belt and latch hook interlocking system

Abstract

The invention discloses a double-interlocking logic AB type lock hook for a safety belt and a lock hook interlocking system, and relates to the technical field of high-altitude operation safety protection, the lock hook comprises a lock hook controller, the lock hook controller is in communication connection with the following modules: a state sensing module, which is used for monitoring the locking state of a main lock and an auxiliary lock of the AB type lock hook in real time, lock body state information is provided for a lock hook controller; and the control logic module is used for dynamically controlling unlocking and locking permissions of the main lock and the auxiliary lock according to the lock body state information of the state sensing module. According to the invention, a forced alternate locking mechanism is constructed, only the main lock is authorized to be unlocked during initialization, the authority of the auxiliary lock can be activated after the main lock is locked, and the authority chain is automatically reset after the auxiliary lock is locked, so that at least one lock body is always in a locked state in the climbing and hooking process; the risk of hanging in air caused by illegal operation or misjudgment of operators is effectively prevented, and the safety of high-altitude operation is fundamentally improved.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology for high-altitude operations, specifically to a double interlocking logic AB-type locking hook and locking hook interlocking system for safety belts. Background Technology

[0002] Safety is paramount in high-altitude electrical work, especially when operators are working at heights. Safety belts are an essential protective measure. The AB-type locking hook with double interlocking logic features two interlocking mechanisms. Only when both are locked can the safety belt be securely fixed to the support point, preventing the hook from detaching due to operational errors or external forces. This improves worker safety. In the power industry, high-altitude electrical work typically involves high environmental pressure and operational risks, where even minor mistakes can lead to serious consequences. The AB-type locking hook, with its double locking, eliminates the safety hazards that a single locking hook might pose, providing more reliable protection for workers.

[0003] In existing technologies, the cumbersome switching between main and auxiliary safety belts during high-altitude operations leads to workers illegally climbing with double locks while suspended in mid-air. Furthermore, the safety belts lack an automated alternating locking mechanism, making it impossible to forcibly prevent such violations. Therefore, the problem this invention aims to solve is how to use an electronic induction interlocking system to dynamically control the double lock permissions using sensors, ensuring that at least one lock is in a locked state throughout the climbing process, thereby eliminating the risk of falls at the source. To this end, an AB-type double interlocking logic lock hook and lock hook interlocking system for safety belts are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention is implemented through the following technical solution: Firstly, a double interlocking logic AB-type lock hook interlocking system for seat belts, comprising a lock hook controller, wherein the lock hook controller is communicatively connected to the following modules, wherein: The status sensing module is used to monitor the locking status of the main lock and auxiliary lock of the AB type lock hook in real time and provide lock body status information to the lock hook controller; The control logic module is used to dynamically control the unlocking and locking permissions of the master and slave locks based on the lock body status information of the status sensing module, and to implement the forced interlocking logic. The execution drive module receives instructions from the control logic module, uses a miniature linear motor to drive the seat belt buckle to perform locking and unlocking actions, and feeds back the motor-driven buckle action results to the lock hook controller. The safety protection module is used to configure a dual hardware and software protection mechanism to prevent safety risks caused by system abnormalities or misoperation. In particular, by physically isolating the dual lock control circuit, it avoids the risk caused by simultaneous power-on and fundamentally prevents the possibility of the main lock and the auxiliary lock being opened at the same time.

[0005] Preferably, the state perception module includes a lock body state perception unit and a redundancy detection unit; The lock body state sensing unit is used to detect the locking status of the main lock and the auxiliary lock through miniature Hall sensors embedded in the bolts of the main lock and the auxiliary lock of the seat belt. The redundant detection unit is used to use the microswitches installed in the main lock and the auxiliary lock as redundant detection information, and to integrate the multi-source signals of the micro Hall sensor and the microswitches to comprehensively judge the lock body status, and then transmit the lock body status information to the lock hook controller to ensure that the lock hook controller can obtain the latest lock body status information in a timely manner.

[0006] Preferably, the lock body state sensing unit specifically includes: Miniature Hall sensors are embedded inside the bolts of the main and auxiliary locks of the seat belt to sense the closed and open states of the bolts. The miniature Hall sensor continuously monitors the position change of the bolt. When the bolt is fully inserted into the lock body, it generates a locking signal, and vice versa, it generates an unlocking signal, thus achieving contactless status feedback. The detected locking / unlocking electrical signals are converted into digital signals and transmitted to the lock hook controller in real time via cable.

[0007] Preferably, the redundancy detection unit specifically includes: Extract the magnetic field sensing signals from the miniature Hall sensors in the main lock and the secondary lock, and collect the mechanical trigger signals from the micro switches in the main lock and the secondary lock; The electrical signal of the Hall sensor and the switching signal of the micro switch are time-aligned and logically verified to filter abnormal fluctuations and generate comprehensive state criteria. The lock body's locking / unlocking status is determined based on the fused signal criteria, and the results are transmitted to the lock hook controller in real time through a standardized interface.

[0008] Preferably, the control logic module includes an access control unit and an exception handling unit; The permission management unit is used to dynamically manage the opening permissions of the main lock and the secondary lock based on the obtained lock body status information. In the initial state, only the main lock is authorized to unlock. After the main lock is locked, the secondary lock is automatically authorized to unlock and the main lock permission is disabled to prevent both locks from being opened at the same time and to ensure that at least one lock is in the locked state. When the secondary lock is locked, the permission chain is automatically reset and the initial state is restored. The anomaly handling unit is used to monitor and handle abnormal double-lock status. When an abnormal status is detected, an audible and visual alarm is immediately triggered to remind the operator to correct the error in time and avoid safety hazards.

[0009] Preferably, the permission management unit specifically includes: After startup, only the main lock unlocking permission is activated, while the secondary lock permission is disabled. The secondary lock actuator is locked through control logic to ensure that the main lock has exclusive operation rights. When the main lock locking signal is triggered, the secondary lock's access restriction is automatically lifted and its unlocking permission is activated, while the main lock actuator is disabled to prevent both locks from opening simultaneously. After the secondary lock completes the locking action, the system resets the permission chain to its initial state, restoring it to the initial state where only the primary lock can be unlocked.

[0010] Preferably, the exception handling unit specifically includes: Continuously collect signals from the dual-lock Hall sensor and micro switch, and use logic verification to determine whether the lock body status meets the preset safety rules, i.e., whether a single lock is unlocked or both locks are unlocked simultaneously, and identify abnormal modes. When an anomaly is detected, the high-frequency buzzer and red warning light alarm device is immediately activated. At the same time, the current abnormal status data is locked and permission switching is prohibited to prevent the risk from being amplified by misoperation until the operator manually confirms. If the abnormality continues for an extended period or triggers an emergency condition that interrupts the sensor signal, the power supply to the double-lock actuator will be automatically cut off, forcing the system into a safe interlocking mode, and the fault code will be uploaded to the lock hook controller for subsequent maintenance.

[0011] Preferably, the execution driving module specifically includes: The execution drive module receives locking / unlocking commands sent by the control logic module through a standardized interface, parses the command type and target state of the main lock / secondary lock operation, and generates control parameters for the micro linear motor. Based on the analysis results, a pulse width modulation (PWM) signal is output to the micro linear motor to drive the motor to rotate forward / reverse to complete the latch extension and retraction action, while simultaneously monitoring the motor current and displacement sensor data; After the action is completed, the signal from the latch Hall sensor is collected to confirm the actual status (locked / locked), and a feedback data packet containing a timestamp and a verification code is generated and uploaded to the latch controller in real time.

[0012] Preferably, the security protection module specifically includes: Physical isolation between the main lock and auxiliary lock control circuits is achieved by using an independent power supply circuit and relay group, so that the dual lock drive signals do not overlap electrically. Furthermore, the circuit design uses forced mutual exclusion logic to prevent the simultaneous output of unlocking commands to the dual lock actuators, thus blocking the risk of simultaneous opening from the root. The system performs permission verification and status conflict detection on the received lock / unlock commands, compares the compliance of the operation with the preset rule engine, rejects illegal requests, and triggers alarm log recording. The system monitors the status signals and operation sequence of the dual locks in real time. If an abnormal concurrent unlocking signal or continuous false triggering is detected, the corresponding lock body drive power is immediately cut off, and the system permissions are locked until manual reset, ensuring that the risk is controllable.

[0013] Secondly, a double interlocking logic AB type locking hook for seat belts includes the aforementioned double interlocking logic AB type locking hook interlocking system for seat belts.

[0014] This invention provides a double interlocking logic AB-type locking hook and locking hook interlocking system for seat belts. It has the following beneficial effects: (i) This double interlocking logic AB type lock hook and lock hook interlocking system for safety belts, by constructing a forced alternating locking mechanism, initially only authorizes the main lock to unlock, and the secondary lock can only be activated after the main lock is locked. After the secondary lock is locked, the authorization chain is automatically reset, ensuring that at least one lock body is always in the locked state during climbing and hooking. Logically, it eliminates the possibility of both locks being opened at the same time, effectively preventing the risk of empty hooking caused by the operator's violation of regulations or misjudgment, and fundamentally improving the safety of high-altitude operations.

[0015] (II) The dual interlocking logic AB type lock hook and lock hook interlocking system for seat belts adopts a redundant detection link composed of miniature Hall sensors and micro switches. The hardware synchronization circuit performs timing alignment and logic verification of multi-source signals to comprehensively judge the lock body status. When the signals conflict, the secondary re-inspection process is initiated, which effectively filters out misjudgments caused by electromagnetic interference or mechanical vibration, significantly improves the accuracy of status perception and the fault tolerance of the system, avoids system malfunction or failure due to the failure of a single sensor, and ensures the stable operation of the system under complex working conditions.

[0016] (III) This dual interlocking logic AB-type locking hook and locking hook interlocking system for seat belts realizes automatic switching and status confirmation of the main and auxiliary lock permissions through a closed-loop architecture of perception-control-execution-feedback. After the locking action is completed, the system collects Hall sensor signals in real time and compares them with the expected status, generates a feedback data packet with timestamp and check code and uploads it to the controller, forming a complete control closed loop. It not only supports the continuous and alternating use of the main and auxiliary locks, but also ensures that the controller can grasp the execution results in real time, providing a data foundation for real-time monitoring and historical traceability of the system status. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the working process of a double interlocking logic AB type locking hook and locking hook interlocking system for seat belts according to the present invention. Figure 2 This is a data flow diagram of an AB-type interlocking system for seat belts according to the present invention. Detailed Implementation

[0018] 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.

[0019] Example 1, please refer to Figure 1 , Figure 2 This invention provides a technical solution: an AB-type interlocking system for seat belts, comprising a hook controller, wherein the hook controller is communicatively connected to the following modules, wherein: The status perception module is used to monitor the locking status of the main lock and the auxiliary lock of the AB type lock hook in real time and provide lock body status information to the lock hook controller. The status perception module includes a lock body status perception unit and a redundancy detection unit. The lock body status sensing unit is used to detect the locking status of the main lock and the auxiliary lock by using miniature Hall sensors embedded in the bolts of the main lock and the auxiliary lock of the seat belt. The miniature Hall sensors are embedded inside the bolts of the main lock and the auxiliary lock of the seat belt to sense the closing and opening status of the bolts. The miniature Hall sensors continuously monitor the changes in the position of the bolts. When the bolts are fully inserted into the lock body, a locking signal is generated, and vice versa, an unlocking signal is generated, realizing contactless status feedback. The detected locking / unlocking electrical signals are converted into digital signals and transmitted to the lock hook controller in real time via cable. The specific operation of the lock body status sensing unit is as follows: By embedding miniature Hall sensors inside the bolts of the main and auxiliary locks of the seat belt, the position of the bolts is accurately detected. Based on the principle of magnetic field induction, the miniature Hall sensors non-contactly sense the movement of the bolts. When the bolt is fully inserted into the corresponding slot of the lock body during the locking process, the miniature Hall sensor detects a preset magnetic field change and automatically generates a locking signal; conversely, if the bolt retracts from the lock body, an unlocking signal is triggered. This avoids signal failure caused by wear or contamination of traditional mechanical contacts, improving the reliability and service life of status detection. During the status sensing process, the miniature Hall sensors continuously monitor... The lock tongue changes position and converts the detected locked or unlocked state into a corresponding electrical signal output. The electrical signal is filtered and amplified by the built-in signal conditioning circuit to enhance anti-interference capability and signal stability. The processed electrical signal is converted into a digital signal by the analog-to-digital converter module to ensure that the status information can be accurately identified and processed by the lock hook controller. The converted digital signal is transmitted to the lock hook controller in real time through a cable. The transmission process adopts a standardized communication protocol to ensure the integrity and timeliness of the signal during transmission. The system continuously performs self-checks on the sensor and signal link. When a signal abnormality or communication interruption occurs, the system promptly reports the fault status. The redundant detection unit uses the microswitches installed in the main lock and auxiliary lock as redundant detection information, and integrates the multi-source signals from the micro Hall sensor and the microswitches to comprehensively judge the lock body status. Then, it transmits the lock body status information to the lock hook controller to ensure that the lock hook controller can obtain the latest lock body status information in a timely manner, providing a basis for dynamic control of dual lock permissions. It extracts the magnetic field induction signals of the micro Hall sensor in the main lock and auxiliary lock, and collects the mechanical trigger signals of the microswitches in the main lock and auxiliary lock. It performs timing alignment and logic verification between the electrical signals of the Hall sensor and the switching signals of the microswitches, filters abnormal fluctuations and generates comprehensive status criteria. Based on the fused signal criteria, it determines the lock body's locked / unlocked state and transmits the results to the lock hook controller in real time through a standardized interface. The redundant detection unit works as follows: It collects magnetic field signals from the miniature Hall sensors in the main and auxiliary locks, as well as mechanical trigger signals from the microswitches. The Hall sensors detect the bolt position through non-contact magnetic field changes, generating continuous analog electrical signals. The microswitches generate switching signals through mechanical contact closure / opening. These two signal sources operate independently, forming a dual-channel detection link to avoid misjudgments caused by single sensor failure. The unit performs timing alignment and logic verification on the collected Hall electrical signals and microswitch signals. Hardware synchronization circuits ensure consistent time bases for both signals. It compares signal amplitude, edge slope, and duration parameters to filter abnormal fluctuations caused by electromagnetic interference or mechanical jitter. When the two signals are consistent, a valid criterion is generated. If a conflict exists, a secondary re-inspection process is triggered to ensure the accuracy and fault tolerance of the status determination. Based on the fused signal criteria, the lock body's locked / unlocked state is determined, and the results are transmitted in real-time to the lock hook controller via a standardized interface. The transmission protocol includes data checksums and a retransmission mechanism to ensure signal integrity. The control logic module is used to dynamically control the unlocking and locking permissions of the master and slave locks based on the lock body status information of the status sensing module, and to implement the forced interlocking logic. The execution drive module receives instructions from the control logic module, uses a micro linear motor to drive the seat belt buckle to perform locking and unlocking actions, and feeds back the motor-driven buckle action results to the hook controller to ensure that the hook controller can understand the actual status of the buckle in real time. The security protection module is used to configure a dual hardware and software protection mechanism to prevent security risks caused by system anomalies or misoperations. In particular, by physically isolating the dual lock control circuit, it avoids the risk caused by simultaneous power-on, fundamentally preventing the possibility of the main lock and the auxiliary lock being opened at the same time. It also intelligently judges and processes operation requests to prevent misoperations and violations.

[0020] Example 2, as Figure 1 , Figure 2As shown, based on Embodiment 1, the present invention provides a technical solution: the control logic module includes a permission management unit and an exception handling unit; The access control unit dynamically manages the opening permissions of the main lock and the secondary lock based on the acquired lock body status information. In the initial state, only the main lock is authorized to unlock. After the main lock is locked, the secondary lock is automatically authorized to unlock, and the main lock's permission is disabled to prevent both locks from opening simultaneously and to ensure that at least one lock is in the locked state. When the secondary lock is locked, the access control chain is automatically reset to restore the initial state (only the main lock can unlock), forming a closed-loop control logic that supports continuous alternating use. After startup, only the main lock's unlocking permission is activated, and the secondary lock's permission is disabled. The secondary lock actuator is locked through the control logic to ensure that the main lock has exclusive operating rights. When the main lock's locking signal is triggered, the secondary lock's permission restriction is automatically lifted and its unlocking permission is activated. At the same time, the main lock actuator is disabled to prevent both locks from opening simultaneously. After the secondary lock completes the locking action, the system resets the access control chain to the initial state, restoring the initial state where only the main lock can unlock, forming a closed-loop control that supports continuous alternating use. The specific tasks of the access control unit are as follows: After system startup, it automatically sets the initial access status: only the master lock unlocking permission is activated, while the secondary lock permission is disabled. In this state, the drive signal of the secondary lock actuator is locked by the control logic to ensure that the secondary lock cannot respond to any unlocking command, thereby ensuring the master lock's exclusive operating rights. Logically, this forces operators to prioritize using the master lock for initial connection, preventing the risk of misoperation due to the simultaneous availability of both locks. It also continuously monitors the signal input from the master lock status sensor to prepare for subsequent access control switching. When the access control unit receives a valid master lock locking signal, it immediately executes the access control switching process: automatically removing the logical restriction on the secondary lock's access and activating its unlocking permission. Simultaneously, the system disables the control signal of the master lock actuator to ensure that the master lock cannot be opened during this stage. The process employs both hardware mutual exclusion circuits and software logic to prevent the simultaneous activation of the main lock and auxiliary lock actuators. Simultaneously, real-time monitoring of the dual lock status ensures that at least one lock is locked at any given time, maintaining system security throughout the permission transition process. When the auxiliary lock completes its locking action and the sensor emits a valid signal, the permission management unit automatically performs a system reset operation: restoring the permission chain to its initial state, including reactivating the main lock's unlocking permission and disabling the auxiliary lock actuator control signal, returning the system to its initial configuration where only the main lock can be unlocked. This reset mechanism forms a complete closed-loop control logic, supporting the continuous alternation of main and auxiliary locks. Through a periodic permission rotation mechanism, it meets the safety requirements for continuous climbing during high-altitude operations while ensuring that at least one lock is reliably locked at any stage of operation. The anomaly handling unit is used to monitor and handle abnormal double-lock status. When an abnormal status is detected, an audible and visual alarm is immediately triggered to remind operators to correct errors in time and avoid safety hazards. It continuously collects signals from the double-lock Hall sensor and micro switch, and uses logic verification to determine whether the lock body status meets the preset safety rules, i.e., single lock unlocking or double lock unlocking simultaneously. It identifies abnormal modes, and when an abnormality is detected, it immediately activates the audible and visual alarm device with a high-frequency buzzer and a red warning light. At the same time, it locks the current abnormal status data and prohibits permission switching to prevent the risk from escalating due to misoperation until the operator manually confirms. If the abnormality continues for an extended period or triggers an emergency condition of sensor signal interruption, it automatically cuts off the power to the double-lock actuator, forces the system into a safe interlocking mode, and uploads the fault code to the lock hook controller for subsequent maintenance. The specific functions of the anomaly handling unit are as follows: It continuously collects the Hall sensor magnetic field signals and micro-switch mechanical trigger signals from the main lock and auxiliary lock. Through hardware synchronization circuitry, it achieves timing alignment of the multi-source signals. Based on preset safety rules (single lock unlocking allowed / simultaneous double lock unlocking prohibited), it performs logical checks on signal amplitude, edge slope, and duration to identify whether the lock body status meets the safety threshold. When it detects that both locks are simultaneously unlocked or that the single lock unlocking signal is continuously abnormal, it determines an abnormal mode and immediately triggers subsequent processing procedures to ensure that the risk is quickly identified. After identifying the anomaly, the anomaly handling unit simultaneously activates a high-frequency buzzer (frequency ≥ 2kHz) and a red warning light (brightness ≥ 500cd / m²) to form a combined audible and visual alarm. Simultaneously, the system locks the current abnormal state data, including the original sensor data. The system monitors the signal, timestamp, and verification results, and uses control logic to prevent the execution of permission switching commands to prevent operator error from escalating the risk. In this state, the system continuously monitors the operator's manual confirmation signal (triggered by the reset button). Before confirmation, the system maintains the alarm and permission freeze state. If the abnormal state continues to exceed the preset threshold (30 seconds) or triggers sensor signal interruption (Hall signal loss, micro switch open circuit), the power drive circuit of the dual lock actuator is automatically cut off, forcing the system to enter the safety lock mode. At this time, neither the main lock nor the auxiliary lock actuator can respond to the unlock command, ensuring that the lock body is physically locked. At the same time, the system uploads the fault code (including the abnormality type, occurrence time, and sensor identifier) ​​to the lock hook controller through a standardized interface to provide data support for subsequent maintenance until the system is manually reset and returns to the initial state. The execution drive module specifically includes: receiving locking / unlocking commands sent by the control logic module through a standardized interface, parsing the command type and target state of the main lock / secondary lock operation, generating control parameters for the micro linear motor, and outputting pulse width modulation (PWM) signals to the micro linear motor based on the parsing results to drive the motor to rotate forward / reverse to complete the latch extension and retraction action. Simultaneously, it monitors the motor current and displacement sensor data. After the action is completed, it collects the latch Hall sensor signal to confirm the actual state (locked / locked), generates a feedback data packet containing a timestamp and a check code, and uploads it to the latch controller in real time. The specific work of the execution drive module is as follows: The execution drive module receives locking or unlocking commands from the control logic module through a standardized communication interface. It parses the command content, identifies the target operation object (main lock or secondary lock) and its expected state. The parsing process includes command type identification, target lock body identification extraction, and state parameter verification. Based on the parsing results, it generates corresponding micro linear motor control parameters, including motion direction, travel distance, and action speed parameters. According to the preset control parameters, it outputs precise pulse width modulation (PWM) signals to the target micro linear motor. By adjusting the PWM duty cycle, it controls the motor speed and torque, driving the motor to perform forward or reverse rotation, thus extending or retracting the latch. During motor operation, it synchronously monitors its operating current and feedback data from the built-in displacement sensor to determine in real time whether there is stall, overload, or abnormal travel, ensuring the latch's operation. The accuracy and reliability of the system are ensured through several mechanisms. For example, by monitoring the input current of the micro linear motor, an overload is detected if it exceeds a threshold (1.5A). The motor's built-in photoelectric encoder provides real-time feedback on the latch's stroke position. For stall detection, the current continuously exceeds the threshold and the displacement remains unchanged for more than 0.5 seconds. For stroke abnormalities, the actual displacement deviates from the expected stroke by more than ±2mm. When an abnormality is triggered, the PWM output is immediately stopped, and a fault code is uploaded to the control logic module. After the action is completed, the real-time signal from the Hall sensor inside the latch is collected. By comparing it with the expected state, the actual state (locked or locked) of the latch is confirmed. After verification, a status feedback data packet containing the action completion timestamp and data verification code is generated and uploaded to the latch controller in real-time through a standardized interface, providing closed-loop status confirmation and ensuring that the latch controller can accurately grasp the execution result. The safety protection module specifically includes: physical isolation of the main lock and auxiliary lock control circuits through an independent power supply circuit and relay group, so that the dual lock drive signals do not overlap electrically, and using circuit design to enforce mutual exclusion logic to prevent simultaneous output of unlocking commands to dual lock actuators, thus blocking the risk of simultaneous opening from the root. It performs permission verification (operator ID, work area matching) and status conflict detection (unlocking is prohibited while locked) on the received lock / unlock commands, compares the compliance of operations through a preset rule engine, rejects illegal requests and triggers alarm log recording, and monitors the dual lock status signals (Hall sensor, micro switch) and operation timing in real time. If abnormal concurrent unlocking signals or continuous false triggering are detected, the corresponding lock body drive power is immediately cut off, and the system permissions are locked until manual reset, ensuring that the risk is controllable. The specific functions of the security protection module are as follows: The security protection module constructs a basic security barrier through physical isolation and forced mutual exclusion design at the hardware level. It employs independent power supply circuits and relay groups to physically isolate the control circuits of the main lock and the auxiliary lock, ensuring that the drive signals of the two locks are completely electricalally independent with no overlapping paths. Based on this, forced mutual exclusion logic is implemented through circuit design, completely prohibiting the simultaneous output of unlocking commands to the actuators of both locks at the hardware level. Utilizing a hardware-based mutual exclusion mechanism, the possibility of both locks being opened simultaneously is physically blocked, forming the lowest level of security defense that cannot be breached by software errors. The module performs multi-level security verification on received lock / unlock commands: It verifies the operator's ID against the work area to confirm that the command initiator has compliant operating permissions; it performs state conflict detection; if the lock body is currently in a locked state… If the request is rejected, the unlocking request will be refused, and vice versa. The verification process relies on a preset rule engine to compare the matching of operation instructions with the system's real-time status and permission database. Unauthorized requests will be immediately intercepted and alarm logs will be generated, recording the operation time, instruction type, and reason for rejection. The system continuously monitors the dual-lock status signals (Hall sensor magnetic field strength, micro switch contact status) and operation timing. Multi-source signal timing pairs are achieved through hardware synchronization circuits. If an abnormal concurrent unlocking signal is detected (Hall sensors of the main lock and the auxiliary lock simultaneously indicate the unlocking status) or a continuous false trigger (the duration of the single lock unlocking signal exceeds the threshold), an emergency response will be immediately triggered: the corresponding lock body drive power will be cut off, the system operation permissions will be frozen, and the audible and visual alarm status will be maintained until manual reset. At the same time, the current abnormal status data (including the original sensor signals and timestamps) will be locked, and the execution of permission switching instructions will be prohibited to ensure that the risk is strictly controllable.

[0021] Example 3, as Figure 1 , Figure 2 As shown, based on embodiments 1-2, the present invention also provides a double interlocking logic AB type locking hook for seat belts, including the above-mentioned double interlocking logic AB type locking hook interlocking system for seat belts.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] 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. A dual interlocking logic AB-type locking hook interlocking system for seat belts, comprising a locking hook controller, characterized in that, The locking hook controller has the following communication connections: The status sensing module is used to monitor the locking status of the main lock and auxiliary lock of the AB type lock hook in real time and provide lock body status information to the lock hook controller; The control logic module is used to dynamically control the unlocking and locking permissions of the main and secondary locks based on the lock body status information from the status sensing module. The execution drive module receives instructions from the control logic module and uses a miniature linear motor to drive the seat belt buckle for locking and unlocking actions. The security protection module is used to configure a dual hardware and software protection mechanism to prevent security risks caused by system anomalies or misoperations.

2. The AB-type interlocking system for seat belts according to claim 1, characterized in that: The status sensing module includes a lock body status sensing unit and a redundancy detection unit; The lock body state sensing unit is used to detect the locking status of the main lock and the auxiliary lock through miniature Hall sensors embedded in the bolts of the main lock and the auxiliary lock of the seat belt. The redundant detection unit is used to use the microswitches additionally installed in the main lock and the auxiliary lock as redundant detection information, and to integrate the multi-source signals of the micro Hall sensor and the microswitches to comprehensively judge the lock body status, and then transmit the lock body status information to the lock hook controller.

3. The AB-type interlocking system for seat belts according to claim 2, characterized in that: The lock body state sensing unit specifically includes: Miniature Hall sensors are embedded inside the bolts of the main and auxiliary locks of the seat belt to sense the closed and open states of the bolts. The miniature Hall sensor continuously monitors the position change of the bolt. When the bolt is fully inserted into the lock body, it generates a locking signal, and vice versa, it generates an unlocking signal. The detected locking / unlocking electrical signals are converted into digital signals and transmitted to the lock hook controller in real time via cable.

4. The AB-type interlocking system for seat belts according to claim 2, characterized in that: The redundancy detection unit specifically includes: Extract the magnetic field sensing signals from the miniature Hall sensors in the main lock and the secondary lock, and collect the mechanical trigger signals from the micro switches in the main lock and the secondary lock; The electrical signal of the Hall sensor and the switching signal of the micro switch are time-aligned and logically verified to filter abnormal fluctuations and generate comprehensive state criteria. The lock body's locking / unlocking status is determined based on the fused signal criteria, and the results are transmitted to the lock hook controller in real time through a standardized interface.

5. The AB-type interlocking system for seat belts according to claim 2, characterized in that: The control logic module includes an access control unit and an exception handling unit; The permission management unit is used to dynamically manage the opening permissions of the main lock and the secondary lock based on the obtained lock body status information. In the initial state, only the main lock is authorized to unlock. After the main lock is locked, the secondary lock is automatically authorized to unlock and the main lock permission is disabled. When the secondary lock is locked, the permission chain is automatically reset and the initial state is restored. The anomaly handling unit is used to monitor and handle abnormal double-lock status. When an abnormal status is detected, it immediately triggers an audible and visual alarm to remind the operator to correct the error in time.

6. The AB-type interlocking system for seat belts according to claim 5, characterized in that: The permission management unit specifically includes: After startup, only the primary lock unlocking permission is activated, while the secondary lock permission is disabled. The secondary lock actuator is locked through control logic. When the main lock locking signal is triggered, the secondary lock's access restriction is automatically lifted and its unlocking permission is activated, while the main lock actuator is disabled to prevent both locks from opening simultaneously. After the secondary lock completes the locking action, the system resets the permission chain to its initial state, restoring it to the initial state where only the primary lock can be unlocked.

7. The AB-type interlocking system for seat belts according to claim 5, characterized in that: The exception handling unit specifically includes: Continuously collect signals from the dual-lock Hall sensor and micro switch, and use logic verification to determine whether the lock body status meets the preset safety rules, i.e., whether a single lock is unlocked or both locks are unlocked simultaneously, and identify abnormal modes. When an anomaly is detected, the high-frequency buzzer and red warning light alarm device is immediately activated, and the current abnormal status data is locked and permission switching is prohibited until the operator manually confirms it. If the abnormality continues for an extended period or triggers an emergency condition that interrupts the sensor signal, the power supply to the double-lock actuator will be automatically cut off, forcing the system into a safe interlocking mode, and the fault code will be uploaded to the lock hook controller for subsequent maintenance.

8. The AB-type interlocking system for seat belts according to claim 5, characterized in that: The execution driver module specifically includes: The execution drive module receives locking / unlocking commands sent by the control logic module through a standardized interface, parses the command type and target state of the main lock / secondary lock operation, and generates control parameters for the micro linear motor. Based on the analysis results, a pulse width modulation signal is output to the micro linear motor to drive the motor to rotate forward / reverse to complete the locking extension and retraction action, while simultaneously monitoring the motor current and displacement sensor data; After the action is completed, the signal from the latch Hall sensor is collected to confirm the actual status, and a feedback data packet containing a timestamp and a verification code is generated and uploaded to the latch controller in real time.

9. A double interlocking logic AB-type locking hook interlocking system for seat belts according to claim 1, characterized in that: The security protection module specifically includes: The main lock and auxiliary lock control circuits are physically isolated by an independent power supply circuit and a relay group, so that the dual lock drive signals do not overlap electrically. The circuit design uses forced mutual exclusion logic to prevent the simultaneous output of unlocking commands to the dual lock actuators. The system performs permission verification and status conflict detection on the received lock / unlock commands, compares the compliance of the operation with the preset rule engine, rejects illegal requests, and triggers alarm log recording. The system monitors the status signals and operation sequence of the dual locks in real time. If an abnormal concurrent unlocking signal or continuous false triggering is detected, the corresponding lock body drive power is immediately cut off, and the system permissions are locked until manual reset.

10. A double interlocking logic AB-type locking hook for seat belts, characterized in that, Includes the double interlocking logic AB type locking hook interlocking system for seat belts as described in any one of claims 1 to 9.

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