A door lock detection control system and method

Abstract

This invention provides a hall door lock detection and control system and method. Through the coordinated operation of the main control board, functional safety board, and external call board, it achieves layered detection and information exchange of the main and auxiliary hall door lock statuses on each floor of the elevator. When the external call board detects a hall door lock disconnection timeout, it feeds back to the main control board. The functional safety board combines the elevator operating status, the hall door lock disconnection location, and the duration of the disconnection to make multi-dimensional judgments and execute differentiated processing strategies such as no-stop, strong deceleration stop, or complete elevator shutdown. Simultaneously, it can quickly locate abnormal floors. Using this invention, system disturbances caused by momentary hall door lock disconnections can be effectively filtered, significantly reducing unnecessary elevator emergency stops, improving passenger experience, and achieving accurate location of abnormal hall door lock floors, shortening maintenance and troubleshooting time, and ensuring the safety and stability of elevator operation.

Description

Technical Field

[0001] This invention relates to the field of elevator safety control technology, specifically to a hall door lock detection and control system and method. Background Technology

[0002] As a core component for the safe operation of elevators, the status of elevator hall door locks is directly related to the safety of elevator operation. Currently, most elevator hall door lock detection and control methods involve connecting all floor hall door locks in series after the safety circuit. This series circuit directly acts on the front end of the elevator's running contactor and brake contactor.

[0003] This traditional detection and control method has obvious technical defects: First, when a hall door lock momentary interruption occurs, the safety circuit can only detect the overall disconnection state and cannot accurately identify the specific floor where the abnormality occurred. Maintenance personnel need to check the hall door locks on all floors one by one, resulting in long troubleshooting time and low elevator shutdown maintenance efficiency. Second, even if the hall door lock experiences a brief momentary interruption, it will directly trigger the disconnection of the running contactor and the brake contactor, leading to an emergency stop of the elevator. This will not only affect the normal operating efficiency of the elevator but also bring a very poor riding experience to passengers in the elevator, and may even cause panic among passengers.

[0004] Therefore, how to accurately locate abnormal floors when the hall door locks are activated, while filtering out transient disturbances to reduce unnecessary emergency stops of the elevator, has become a pressing technical problem to be solved in the field of elevator safety control. Summary of the Invention

[0005] Based on this, the present invention provides a hall door lock detection and control system and method to solve the technical problems of traditional hall door lock detection and control methods being unable to locate abnormal floors and easily causing elevators to stop suddenly due to momentary interruptions. It realizes accurate locking of abnormal floors and differentiated control of elevator operation, thereby improving the safety, stability and riding experience of elevator operation.

[0006] In a first aspect, the present invention provides a hall door lock detection and control system, comprising a main control board, a functional safety board, and external call boards for each floor; the functional safety board is electrically connected to the elevator brake drive module and the running drive module respectively, and is connected to the series circuit of the main and auxiliary hall door locks on each floor of the elevator, for detecting the overall closed state of the main and auxiliary hall door locks and realizing the elevator braking control; the external call board on each floor is electrically connected to the main and auxiliary hall door locks of the corresponding floor, for detecting the independent closed and open state of the hall door locks on the corresponding floor; the main control board establishes communication connections with the external call boards and the functional safety board on each floor respectively, for collecting the hall door lock status information of each floor and transmitting the elevator running status information to the functional safety board; the functional safety board performs differentiated control of not stopping, strong deceleration stopping, or stopping the elevator according to the overall closed state of the hall door locks, the independent state of the hall door locks on each floor, and the elevator running status.

[0007] As a further improvement to the technical solution of this invention, the main control board and the functional safety board interact with each other via a secure communication method. The elevator operating status information transmitted from the main control board to the functional safety board includes the elevator floor height display, current position, operating speed, and operating direction. This secure communication method ensures the accuracy and security of data transmission, avoiding control errors caused by data transmission mistakes. Furthermore, the comprehensive operating status information, such as the elevator floor height display and current position, provides a data foundation for the functional safety board's accurate judgment.

[0008] As a further improvement to the technical solution of this invention, the output terminal of the functional safety board is connected in series in the drive circuits of the brake drive module and the running drive module. When the functional safety board determines to stop the elevator, it cuts off the drive circuits of the brake drive module and the running drive module to stop the elevator. This connection method enables the functional safety board to directly control the elevator's drive and brake systems, ensuring the rapid execution of the stopping command and guaranteeing the safe operation of the elevator.

[0009] As a further improvement to the technical solution of this invention, each layer of the external call board has a built-in timing module for timing the open state of the corresponding floor door lock. When the duration of the open state reaches a preset threshold, the open state of the door lock is fed back to the main control board. The timing module effectively filters out brief fluctuations in the door lock state, avoids invalid state feedback caused by momentary disturbances, and improves the accuracy of system detection.

[0010] Secondly, the present invention provides a hall door lock detection and control method, applied to the aforementioned hall door lock detection and control system, comprising the following steps:

[0011] S1. The external call panel on each floor detects the closed and open status of the main and secondary lobby door locks on the corresponding floor in real time. When the door lock is detected to change from closed to open and the duration exceeds the first preset time T1, the external call panel feeds back the open status to the main control board and continues to feed back the status until the second preset time T2, after which the real-time status feedback is restored.

[0012] S2. The functional safety board monitors the overall closed state of the main and auxiliary hall door lock series circuits of each floor of the elevator in real time. When the overall state changes from closed to open and the duration exceeds the third preset time T3, the state judgment process is entered. If the duration is less than T3, it is regarded as a system disturbance and no action is taken.

[0013] S3. The main control board transmits the collected information on the unlocking status of each floor's hall doors and the elevator's operating status to the functional safety board via secure communication.

[0014] S4. The functional safety panel, in conjunction with the floor location where the hall door lock is disconnected, the duration of the disconnection, and the elevator's operating status, implements differentiated handling measures such as not stopping, strong deceleration stopping, or stopping the elevator.

[0015] As a further improvement to the technical solution of the present invention, in step S4, when the duration of the hall door lock disconnection is greater than or equal to the stopping threshold T, the functional safety board directly performs the elevator stopping process. This setting ensures that when the hall door lock experiences a continuous disconnection fault, the elevator can be stopped in time, fundamentally guaranteeing the safety of elevator operation and preventing the fault from escalating and causing a safety accident.

[0016] As a further improvement to the technical solution of the present invention, in step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board performs non-stop processing:

[0017] (1) The elevator is going up, and the disconnected floor is below the current position of the elevator;

[0018] (2) The elevator descends, and the disconnected floor is above the current position of the elevator;

[0019] (3) When the elevator goes up, the disconnected floor is above the nearest destination floor;

[0020] (4) When the elevator descends, the disconnected floor is below the nearest destination floor of the elevator.

[0021] In the above scenario, the disconnected state of the hall door lock will not have a safety impact on the current operation of the elevator. Therefore, the elevator will not stop, which effectively avoids unnecessary emergency stops and improves the elevator's operating efficiency and riding experience.

[0022] As a further improvement to the technical solution of the present invention, in step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board first performs a strong deceleration and stopping process. If the strong deceleration and stopping cannot guarantee that the elevator stops before the disconnected floor, then the elevator stopping process is performed:

[0023] (1) The elevator goes up, and the disconnected floor is between the current elevator position 1 floor and the nearest destination floor;

[0024] (2) The elevator descends and the disconnected floor is below the current elevator position 1 floor and above the nearest destination floor.

[0025] This differentiated control strategy minimizes the impact of emergency stops while ensuring safety. Strong deceleration and stopping provide a buffer for elevator operation. If safety risks cannot be avoided after buffering, the elevator is stopped immediately, achieving a balance between safety and user experience.

[0026] As a further improvement to the technical solution of the present invention, in step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the disconnected floor is within one floor of the current elevator position, the functional safety board directly performs elevator stopping regardless of the elevator's direction of travel. When the disconnected floor is too close to the current elevator position, the elevator faces an immediate safety risk; direct stopping can maximize the safety of personnel and equipment inside the elevator.

[0027] As a further improvement to the technical solution of the present invention, the first preset time T1 is 5ms, the second preset time T2 is 700ms, the third preset time T3 is 20ms, and the stopping threshold T is 100ms. These time parameters are typical application values ​​verified through extensive experiments, effectively filtering system disturbances and accurately determining the fault status of the hall door lock, thus adapting to the actual operating characteristics of the elevator.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] This invention's hall door lock detection and control system achieves dual detection of the overall status of the hall door locks and the independent status of each floor through a layered collaborative design of the main control board, functional safety board, and external call boards for each floor. It relies on the functional safety board to realize the core safety control of elevator stopping, and the external call boards accurately detect the status of the hall door locks on each floor and collect and interact with the main control board. The functional safety board can combine the overall and independent status of the hall door locks with the elevator operating status to complete differentiated control. It can not only quickly and accurately locate the specific floor where the hall door lock is abnormal, greatly shortening the maintenance and troubleshooting time, but also effectively filter the instantaneous disturbance of the hall door lock, reducing unnecessary emergency stops of the elevator. While ensuring the safety and reliability of elevator operation and control, it significantly improves the stability of elevator operation and the passenger riding experience. Moreover, the system's components have clear division of labor, efficient data interaction, and are compatible with the existing elevator control architecture, with low modification costs and strong practicality. Attached Figure Description

[0030] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the architecture of a hall door lock detection and control system according to some embodiments of the present invention;

[0032] Figure 2 This is a timing diagram illustrating the feedback of the hall door lock status according to some embodiments of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of a computer device for implementing a hall door lock detection and control method according to some embodiments of the present invention. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1 and Figure 2 In a first aspect, the present invention provides a hall door lock detection and control system, including a main control board, a functional safety board and external call boards of each layer;

[0037] The functional safety board is electrically connected to the elevator brake drive module and the running drive module, and is connected to the series circuit of the main and auxiliary hall door locks on each floor of the elevator. It is used to detect the overall closing status of the main and auxiliary hall door locks and realize the stopping control of the elevator.

[0038] Each floor's external call panel is electrically connected to the main and secondary entrance door locks of the corresponding floor, and is used to detect the independent closing and opening status of the corresponding floor's entrance door locks;

[0039] The main control board establishes communication connections with the external call board and functional safety board of each floor, respectively, to collect the hall door lock status information of each floor and transmit the elevator operation status information to the functional safety board.

[0040] The functional safety board performs differentiated control of the elevator based on the overall closed state of the hall door locks, the independent state of the hall door locks on each floor, and the elevator's operating state, including non-stop, strong deceleration stop, or complete shutdown.

[0041] It should be noted that the hall door lock detection and control system of the present invention consists of a main control board, a functional safety board, and external call boards for each floor. The functional safety board is connected to the series circuit of the main and auxiliary hall door locks on each floor of the elevator to detect the overall closed state of the hall door locks. At the same time, it is electrically connected to the elevator brake drive module and the running drive module to realize the elevator stopping control. Each floor external call board is electrically connected to the corresponding main and auxiliary hall door locks on the corresponding floor to detect the independent closed and open state of the hall door locks on a single floor. The main control board establishes communication connections with each floor external call board and the functional safety board to complete the collection of hall door lock status information on each floor and the transmission of elevator running status information to the functional safety board. The functional safety board integrates three types of information: the overall closed state of the hall door locks, the independent state of each floor's hall door locks, and the elevator running status. After comprehensive judgment, it executes differentiated control actions such as not stopping, strong deceleration stopping, or stopping the elevator.

[0042] This invention achieves dual detection and information interaction of the overall status of the hall door lock and the independent status of each floor through a layered collaborative design of the main control board, functional safety board, and external call boards on each floor. It breaks through the limitation of traditional hall door locks that can only detect the overall status, and combines elevator braking control with precise detection of floor status. This not only ensures the core requirements of elevator safety control, but also realizes floor location when the hall door lock is abnormal. At the same time, it supports differentiated elevator operation control strategies, effectively reducing unnecessary emergency stops of the elevator. While improving the safety of elevator operation, it also takes into account the stability of operation and the riding experience. The overall system architecture has a clear division of labor, efficient data interaction, and is adaptable to various elevator control scenarios.

[0043] In some embodiments, the main control board and the functional safety board use a secure communication method to exchange data. The elevator operating status information transmitted from the main control board to the functional safety board includes the elevator floor height table, current position, operating speed, and operating direction.

[0044] It should be noted that the main control board and the functional safety board use a secure communication method for data exchange, avoiding transmission errors and interference issues associated with conventional communication. The elevator operating status information transmitted from the main control board to the functional safety board includes the elevator floor height table, current position, operating speed, and direction of travel, providing comprehensive and accurate elevator operating data support for the functional safety board's overall judgment. This secure communication method ensures the accuracy and security of data transmission between the main control board and the functional safety board, preventing elevator control errors caused by data transmission mistakes. Furthermore, the comprehensive elevator operating status information provides the functional safety board with more sufficient basis for judgment, significantly improving the accuracy of system control decisions and further ensuring elevator operational safety.

[0045] In some embodiments, the output terminal of the functional safety board is connected in series to the drive circuit of the brake drive module and the running drive module. When the functional safety board determines that the elevator needs to be stopped, it cuts off the drive circuit of the brake drive module and the running drive module to stop the elevator.

[0046] It should be noted that by connecting the output of the functional safety board in series with the drive circuits of the brake drive module and the running drive module, when the functional safety board determines that a control action to stop the elevator is required, it directly cuts off the drive circuits of the brake drive module and the running drive module. This allows the elevator's drive system and brake system to respond quickly, achieving timely stopping of the elevator. This connection method enables the functional safety board to directly control the elevator's core drive and brake components, ensuring the rapid and effective execution of stopping commands, shortening the elevator's stopping response time, and allowing the elevator to stop quickly in dangerous situations such as persistent malfunctions in the hall door locks. This minimizes safety risks and improves the reliability of elevator safety control.

[0047] In some embodiments, each layer of the external call board has a built-in timing module for timing the disconnection state of the corresponding floor hall door lock. When the duration of the disconnection state reaches a preset threshold, the disconnection state of the hall door lock is fed back to the main control board.

[0048] It should be noted that each floor's external call board has a built-in timing module. This module times the open / closed state of the corresponding floor's lobby door lock in real time. When it detects that the lobby door lock has changed from closed to open, the timing module starts and accumulates the open / closed duration. Only when this duration reaches a preset threshold does the external call board report the lobby door lock's open / closed state to the main control board. By using the built-in timing module to judge the open / closed state of the lobby door lock, the external call board can effectively filter out brief state fluctuations and instantaneous open / closed situations, avoiding invalid state feedback caused by minor disturbances, reducing invalid data processing on the main control board and functional safety board, improving the overall detection accuracy and operating efficiency of the system, and avoiding unnecessary control actions caused by instantaneous open / closed situations.

[0049] Secondly, the present invention provides a hall door lock detection and control method, which, using the above-mentioned hall door lock detection and control system, includes the following steps:

[0050] S1. The external call panel on each floor detects the closed and open status of the main and secondary lobby door locks on the corresponding floor in real time. When the door lock is detected to change from closed to open and the duration exceeds the first preset time T1, the external call panel feeds back the open status to the main control board and continues to feed back the status until the second preset time T2, after which the real-time status feedback is restored.

[0051] S2. The functional safety board monitors the overall closed state of the main and auxiliary hall door lock series circuits of each floor of the elevator in real time. When the overall state changes from closed to open and the duration exceeds the third preset time T3, the state judgment process is entered. If the duration is less than T3, it is regarded as a system disturbance and no action is taken.

[0052] S3. The main control board transmits the collected information on the unlocking status of each floor's hall doors and the elevator's operating status to the functional safety board via secure communication.

[0053] S4. The functional safety panel, in conjunction with the floor location where the hall door lock is disconnected, the duration of the disconnection, and the elevator's operating status, implements differentiated handling measures such as not stopping, strong deceleration stopping, or stopping the elevator.

[0054] In practice, each floor's external call board first monitors the status of the corresponding floor's hall door lock in real time. If the disconnection exceeds the first preset time T1, it feeds back to the main control board and continues until the second preset time T2, after which real-time feedback resumes. The functional safety board simultaneously monitors the status of the entire series circuit of the hall door lock. If the disconnection exceeds the third preset time T3, it enters the judgment process; if it is less than T3, it is considered a system disturbance and is not processed. Subsequently, the main control board transmits the status of each floor's hall door lock and the elevator's operating status to the functional safety board through secure communication. Finally, the functional safety board combines the floor location where the hall door lock is disconnected, the duration of the disconnection, and the elevator's operating status to execute differentiated processing measures such as not stopping, strong deceleration stopping, or stopping the elevator.

[0055] The method of this invention relies on the hierarchical detection architecture of the control system, sets multiple time thresholds to achieve hierarchical detection and disturbance filtering of the hall door lock status, and completes multi-dimensional comprehensive judgment through information interaction between the main control board and the functional safety board, realizing differentiated control of elevator operation. It can accurately capture the effective fault status of the hall door lock, filter transient disturbances, and match the elevator control actions with the actual fault situation, effectively reducing unnecessary emergency stops of the elevator, accurately locating the faulty floor, improving the safety, stability and riding experience of elevator operation, and significantly shortening maintenance and troubleshooting time.

[0056] In some embodiments, in step S4, when the duration of the hall door lock being disconnected is greater than or equal to the stopping threshold T, the functional safety board directly performs the elevator stopping process.

[0057] It should be noted that in the comprehensive judgment stage of the hall door lock detection and control method, the functional safety board determines the duration of the hall door lock's disconnection. When the detected disconnection duration is greater than or equal to the preset stopping threshold T, the control command to stop the elevator is directly triggered without combining other position and operating status information, cutting off the brake and running drive circuit to stop the elevator. Using the hall door lock disconnection duration reaching the stopping threshold T as the judgment condition for direct elevator stopping can quickly identify the continuous fault state of the hall door lock. When the fault has posed a clear safety risk, it skips complex position and operating status judgments and directly executes the stopping action, shortening the fault response time and fundamentally avoiding elevator operation safety accidents caused by continuous hall door lock disconnection, thus improving the system's ability to quickly handle major faults.

[0058] In some embodiments, in step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board performs non-stop processing:

[0059] (1) The elevator is going up, and the disconnected floor is below the current position of the elevator;

[0060] (2) The elevator descends, and the disconnected floor is above the current position of the elevator;

[0061] (3) When the elevator goes up, the disconnected floor is above the nearest destination floor;

[0062] (4) When the elevator descends, the disconnected floor is below the nearest destination floor of the elevator.

[0063] It should be noted that when the duration of the hall door lock being disconnected is less than the stopping threshold T, the functional safety board further determines the relative position of the elevator's current position, direction of travel, and the floor where the hall door lock is disconnected. If any of the following conditions are met: the disconnected floor is below the current position when the elevator is going up; the disconnected floor is above the current position when the elevator is going down; the disconnected floor is above the nearest destination floor when the elevator is going up; or the disconnected floor is below the nearest destination floor when the elevator is going down, the functional safety board will perform non-stop processing, and the elevator will maintain its original operating state until it reaches the destination floor.

[0064] Provided that the duration of the hall door lock being disconnected is short and does not pose a sustained safety risk, the elevator can be made to stop without stopping based on the relative position of the elevator and the disconnected floor. This allows for the determination of scenarios where the disconnected floor has no safety impact on the current elevator travel distance, thus avoiding sudden elevator stops in such scenarios, improving elevator operating efficiency, reducing the decline in passenger experience caused by meaningless stops, and achieving a balance between safety control and operating efficiency.

[0065] In some embodiments, in step S4, when the duration of the hall door lock being open is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board first performs a strong deceleration and stopping process. If the strong deceleration and stopping cannot guarantee that the elevator stops before the disconnected floor, then the elevator stopping process is performed:

[0066] (1) The elevator goes up, and the disconnected floor is between the current elevator position 1 floor and the nearest destination floor;

[0067] (2) When the elevator descends, the disconnected floor is located below the current elevator position 1 floor and above the nearest destination floor.

[0068] It should be noted that when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions: when the elevator is going up, the disconnected floor is 1 floor above the current position and below the nearest destination floor; when the elevator is going down, the disconnected floor is 1 floor below the current position and above the nearest destination floor, the functional safety board first triggers a strong deceleration and stop command. At the same time, it calculates the braking distance of the elevator after strong deceleration. If the braking distance can ensure that the elevator stops before the disconnected floor, it continues to decelerate strongly. If it cannot ensure that the elevator stops immediately, it immediately performs elevator stopping.

[0069] For scenarios where the disconnected floor is within the elevator's current travel range and poses a potential safety risk but does not meet the conditions for direct stopping, a buffer control method of strong deceleration and stopping is adopted. This method can respond to potential safety risks in a timely manner while avoiding the riding experience problems caused by direct emergency stops. At the same time, it judges whether to further stop based on the braking distance, making the control action more in line with the actual level of safety risks. This achieves refined management of potential safety risks and balances elevator operation safety and riding comfort.

[0070] In some embodiments, in step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the disconnected floor is within one floor of the current elevator position, the functional safety board directly performs elevator stopping processing regardless of the elevator's direction of travel.

[0071] It should be noted that when the duration of the hall door lock being open is less than the stopping threshold T, and the functional safety board determines that the disconnected floor is within one floor of the elevator's current position, regardless of whether the elevator is traveling upwards or downwards, the control command to stop the elevator is directly triggered, cutting off the brake and the running drive circuit to achieve rapid elevator stopping. Using the disconnected floor being within one floor of the elevator's current position as the criterion for direct stopping can accurately identify the immediate safety risk of the elevator being too close to the faulty floor. In this case, regardless of the elevator's direction of travel, the stopping action is executed directly, avoiding safety accidents caused by the elevator approaching the faulty floor. This makes the system's safety control of close-range faults more precise, maximizing the safety of personnel and equipment inside the elevator.

[0072] In some embodiments, the first preset time T1 is 5ms, the second preset time T2 is 700ms, the third preset time T3 is 20ms, and the stopping threshold T is 100ms.

[0073] It should be noted that in the hall door lock detection and control method, the first preset time T1 is set to 5ms, the second preset time T2 is set to 700ms, the third preset time T3 is set to 20ms, and the stop threshold T is set to 100ms. Each time parameter serves as a fixed judgment standard for the system and is embedded in the timing and judgment logic of the external call board and the functional safety board to guide the status detection and control actions of each component.

[0074] The above time parameters are typical application values ​​verified by a large number of experiments. They can accurately adapt to the actual operating characteristics of elevator hall door locks and the braking response characteristics of elevators, effectively filter the transient disturbances of hall door locks and the small fluctuations of the system, and accurately identify the effective fault states of hall door locks. This makes the judgment of each time threshold more in line with the actual operating scenario of the elevator, improves the accuracy of system detection and control, and the fixed parameter settings make the system debugging and application more convenient, reducing the difficulty of on-site implementation.

[0075] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0076] The hall door lock detection and control system provided by this invention consists of a main control board, a functional safety board, and external call boards for each layer. These components work together to achieve layered detection of hall door locks, information exchange, and differentiated control of the elevator. The system architecture is as follows: Figure 1 As shown in the diagram. The functional safety board connects to the series circuit of all floor main and auxiliary hall door locks, enabling detection of the overall closed state of the hall door locks. Its output is connected in series to the drive circuits of the elevator brake drive module and the running drive module, serving as the core control component for elevator stopping. Each floor's external call board is electrically connected to the corresponding floor's main and auxiliary hall door locks, enabling accurate detection of the independent state of each floor's hall door lock. The external call board also has a built-in timing module for accurately timing the open state of the hall door locks. A conventional communication circuit is established between the main control board and each floor's external call board to collect the status information of each floor's hall door locks. The main control board and the functional safety board are connected using a secure communication method to ensure the accuracy and security of the transmission of elevator operating status information and hall door lock status information. The information transmitted from the main control board to the functional safety board includes key operating parameters such as the elevator floor height table, current position, operating speed, and operating direction.

[0077] Based on the above control system, the specific implementation process of the hall door lock detection and control method of the present invention is as follows:

[0078] Each floor's external call panel collects the real-time closed / open status of the main and secondary lobby door locks on the corresponding floor. When the external call panel detects that a lobby door lock changes from closed to open, the built-in timing module immediately starts timing. If the duration of this open state does not exceed the first preset time T1 (5ms), it is determined to be an instantaneous state fluctuation, and no state feedback is provided. If the duration exceeds 5ms, the external call panel immediately feeds back the open state of the lobby door lock on that floor to the main control board, and this feedback state will continue for the second preset time T2 (700ms). After 700ms, the external call panel resumes real-time status feedback of the corresponding floor's lobby door locks. The timing sequence of this process is as follows: Figure 2 As shown.

[0079] The functional safety board simultaneously monitors the series circuits of the main and auxiliary hall door locks on each floor of the elevator in real time to determine the overall closed state of the hall door locks. When the overall state changes from closed to open, the functional safety board starts timing. If the duration of the open state is less than the third preset time T3 (20ms), it is determined to be a system disturbance, and no control processing is performed to avoid elevator operation interruption due to minor disturbances. If the duration exceeds 20ms, the functional safety board triggers the state judgment process and waits for the main control board to transmit relevant information.

[0080] After receiving the hall door lock disconnection status information from the external call board, the main control board immediately integrates this information with the elevator's current operating status information (including elevator floor height table, current position, operating speed, and operating direction) and transmits it to the functional safety board in real time via secure communication, providing complete and accurate data support for the functional safety board's judgment.

[0081] After receiving information from the main control board, the functional safety board makes a comprehensive judgment based on three core dimensions: the specific floor location where the hall door lock is disconnected, the duration of the disconnection, and the current operating status of the elevator. Based on the judgment results, it executes differentiated control measures. The specific judgment and control logic is as follows:

[0082] (1) If the duration of the hall door lock being disconnected is greater than or equal to the stopping threshold T (100ms), it indicates that the hall door lock has a continuous fault. At this time, regardless of the elevator’s operating state, the functional safety board will directly cut off the drive circuits of the brake drive module and the running drive module to stop the elevator and ensure the elevator’s safe operation.

[0083] (2) If the duration of the hall door lock being disconnected is less than 100ms, further determine the relative relationship between the disconnected floor and the current position of the elevator and the nearest destination floor:

[0084] ① If any of the following conditions are met: "Elevator is going up and the disconnected floor is below the current position", "Elevator is going down and the disconnected floor is above the current position", "Elevator is going up and the disconnected floor is above the nearest destination floor", or "Elevator is going down and the disconnected floor is below the nearest destination floor", it means that the disconnected floor will not have a safety impact on the current travel of the elevator. The functional safety board will perform non-stop processing, and the elevator will continue to run to the destination floor.

[0085] ② If either of the following conditions is met: "The elevator is going up and the disconnected floor is 1 floor above the current location and below the nearest destination floor" or "The elevator is going down and the disconnected floor is 1 floor below the current location and above the nearest destination floor", the functional safety board will first perform a strong deceleration and stop process, and at the same time calculate the braking distance of the elevator after strong deceleration. If the braking distance can ensure that the elevator stops before the disconnected floor, then the strong deceleration will continue until it stops; if the braking distance cannot ensure that the elevator stops before the disconnected floor, the functional safety board will immediately perform a stop process.

[0086] ③ If the disconnected floor is within 1 floor of the elevator's current position, it means that the elevator is too close to the faulty floor, posing an immediate safety risk. Regardless of the elevator's direction of travel, the functional safety board will directly stop the elevator.

[0087] The modules in the aforementioned hall door lock detection and control system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0088] In another embodiment, the present invention provides a computer device, which may be a server, and its internal structure diagram may be as follows: Figure 3 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The network interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a door lock detection and control method.

[0089] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device to which the present invention is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0090] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described embodiment of the hall door lock detection and control method.

[0091] In one embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described hall door lock detection and control method embodiment.

[0092] In one embodiment, a computer program product or computer program is provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the steps described in the above-described embodiment of the hall door lock detection and control method.

[0093] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A hall door lock detection and control system, characterized in that, This includes the main control board, functional safety board, and external call boards at each layer; The functional safety board is electrically connected to the elevator's brake drive module and running drive module, and is connected to the series circuit of the main and auxiliary hall door locks on each floor of the elevator, which is used to detect the overall closing status of the main and auxiliary hall door locks and realize the elevator's braking control. Each floor's external call panel is electrically connected to the main and secondary entrance door locks of the corresponding floor, and is used to detect the independent closing and opening status of the corresponding floor's entrance door locks; The main control board establishes communication connections with the external call board and functional safety board of each floor, respectively, to collect the hall door lock status information of each floor and transmit the elevator operation status information to the functional safety board. The functional safety board performs differentiated control of the elevator based on the overall closed state of the hall door locks, the independent state of the hall door locks on each floor, and the elevator's operating state, including non-stop, strong deceleration stop, or complete shutdown.

2. The hall door lock detection and control system as described in claim 1, characterized in that, The main control board and the functional safety board communicate with each other using a secure communication method. The elevator operating status information transmitted from the main control board to the functional safety board includes the elevator floor height table, current position, operating speed, and operating direction.

3. The hall door lock detection and control system as described in claim 1, characterized in that, The output of the functional safety board is connected in series to the drive circuit of the brake drive module and the running drive module. When the functional safety board determines to stop the elevator, it cuts off the drive circuit of the brake drive module and the running drive module to stop the elevator.

4. The hall door lock detection and control system as described in claim 1, characterized in that, Each floor's external call board has a built-in timing module for timing the disconnection status of the corresponding floor's hall door lock. When the duration of the disconnection status reaches a preset threshold, the system sends feedback on the hall door lock's disconnection status to the main control board.

5. A method for detecting and controlling a hall door lock, applied to the hall door lock detection and control system according to any one of claims 1-4, characterized in that, Includes the following steps: S1. The external call panel on each floor detects the closed and open status of the main and secondary lobby door locks on the corresponding floor in real time. When the door lock is detected to change from closed to open and the duration exceeds the first preset time T1, the external call panel feeds back the open status to the main control board and continues to feed back the status until the second preset time T2, after which the real-time status feedback is restored. S2. The functional safety board monitors the overall closed state of the main and auxiliary hall door lock series circuits of each floor of the elevator in real time. When the overall state changes from closed to open and the duration exceeds the third preset time T3, the state judgment process is entered. If the duration is less than T3, it is regarded as a system disturbance and no action is taken. S3. The main control board transmits the collected information on the unlocking status of each floor's hall doors and the elevator's operating status to the functional safety board via secure communication. S4. The functional safety panel, in conjunction with the floor location where the hall door lock is disconnected, the duration of the disconnection, and the elevator's operating status, implements differentiated handling measures such as not stopping, strong deceleration stopping, or stopping the elevator.

6. The hall door lock detection and control method as described in claim 5, characterized in that, In step S4, when the duration of the hall door lock being disconnected is greater than or equal to the stopping threshold T, the functional safety board directly performs the elevator stopping process.

7. The hall door lock detection and control method as described in claim 5, characterized in that, In step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board performs non-stop processing: (1) The elevator is going up, and the disconnected floor is below the current position of the elevator; (2) The elevator descends, and the disconnected floor is above the current position of the elevator; (3) When the elevator goes up, the disconnected floor is above the nearest destination floor; (4) When the elevator descends, the disconnected floor is below the nearest destination floor of the elevator.

8. The hall door lock detection and control method as described in claim 5, characterized in that, In step S4, when the duration of the hall door lock being open is less than the stopping threshold T, and the current position of the elevator and the disconnected floor position meet any of the following conditions, the functional safety board first performs a strong deceleration and stopping process. If the strong deceleration and stopping cannot guarantee that the elevator stops before the disconnected floor, then the elevator stopping process is performed: (1) The elevator goes up, and the disconnected floor is between the current elevator position 1 floor and the nearest destination floor; (2) The elevator descends and the disconnected floor is below the current elevator position 1 floor and above the nearest destination floor.

9. The hall door lock detection and control method as described in claim 5, characterized in that, In step S4, when the duration of the hall door lock being disconnected is less than the stopping threshold T, and the disconnected floor is within one floor of the current elevator position, the functional safety board will directly stop the elevator regardless of the elevator's direction of travel.

10. The hall door lock detection and control method according to any one of claims 5-9, characterized in that, The first preset time T1 is 5ms, the second preset time T2 is 700ms, the third preset time T3 is 20ms, and the stopping threshold T is 100ms.

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