Elevator safe operation device, method and storage medium

Abstract

The present invention discloses an elevator safety operation device, method and storage medium. The elevator safety operation device includes a detection module, a main board and a safety control board. When at least one signal in the leveling door zone signal and the middle door zone signal are valid signals, and the elevator operation state meets the early door opening condition or the re-leveling condition, the main board outputs a door lock short-circuit signal. The safety control board controls the door lock short-circuit and outputs a door lock short-circuit feedback signal to the main board, so that the main board performs the early door opening operation or the re-leveling operation. Through the coordinated work of the detection module, the main board and the safety control board, this technical solution realizes comprehensive door zone judgment and function control in the three-door zone signal scenario of only the upper leveling door zone signal, the lower leveling door zone signal and the middle door zone signal, and can accurately trigger the early door opening operation and the re-leveling operation according to the comprehensive judgment of the leveling door zone signal and the middle door zone signal.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator safety operation device, method and storage medium. Background Art

[0002] like Figure 1 As shown, an elevator control device provided by the prior art solution includes a car top control board, a main board and a safety control board. The signals transmitted in the signal transmission line include an upper leveling door area signal S1, a lower leveling door area signal S2, an upper door area signal S3 and a lower door area signal S4. The car top control board detects the upper leveling door area signal S1 and the lower leveling door area signal S2, and sends the upper leveling door area signal S1 and the lower leveling door area signal S2 to the main board. The main board and the safety control board detect the upper door area signal S3 and the lower door area signal S4. The main board then controls the safety control board to work according to the upper leveling door area signal S1, the lower leveling door area signal S2, the upper door area signal S3 and the lower door area signal S4.

[0003] The defects of the existing technical solutions are as follows: they cannot be applied to the three-door zone signal scene where there are only upper leveling door zone signals, lower leveling door zone signals and middle door zone signals on site, because there is only a middle door zone signal in the three-door zone signal scene, and it is impossible to obtain the upper and lower door zone signals at the same time, so it is impossible to make a comprehensive door zone judgment. This will cause the system to be unable to accurately determine whether the car is in a safe area, affecting the triggering conditions of functions such as early door opening and re-leveling. Summary of the invention

[0004] The embodiments of the present invention provide an elevator safe operation device, method and storage medium to solve the above technical problems.

[0005] A first aspect of an embodiment of the present invention provides an elevator safety operation device, comprising:

[0006] A detection module is used to detect the position of the elevator and output a leveling door zone signal and a middle door zone signal, wherein the leveling door zone signal includes an upper leveling door zone signal and a lower leveling door zone signal;

[0007] The main board is connected to the detection module, which is used to obtain the elevator operation status and receive the leveling door zone signal and the middle door zone signal, and output the door lock short-circuit signal when at least one of the leveling door zone signals and the middle door zone signal are valid signals and the elevator operation status meets the early door opening condition or the re-leveling condition;

[0008] The safety control board is connected to the detection module and the main board respectively, and is used to receive the leveling door zone signal and the middle door zone signal. When at least one of the leveling door zone signals and the middle door zone signal are valid signals and the door lock short-circuit signal is received, the door lock is controlled to be short-circuited and a door lock short-circuit feedback signal is output to the main board, so that the main board performs an early door opening operation or a re-leveling operation.

[0009] Optionally, the safety control board is also used to control the door lock to disconnect and output a door lock disconnect feedback signal to the main board when the elevator is in the leveling door open state and detects that at least one of the leveling door zone signals and the middle door zone signal have changed from a valid signal to an invalid signal, so that the main board performs an unexpected protection operation.

[0010] Optionally, the detection module includes an upper leveling sensor, a middle door area sensor, and a lower leveling sensor;

[0011] The elevator safety operation device also includes:

[0012] A first signal processing module, whose input end is respectively connected to the output end of the upper leveling sensor and the output end of the lower leveling sensor, and whose output end is connected to the first input end of the safety control board, for outputting a first control signal according to the upper leveling door zone signal and the lower leveling door zone signal;

[0013] The second signal processing module has an input end connected to the output end of the middle door zone sensor and an output end connected to the second input end of the safety control board, and is used to output a second control signal according to the middle door zone signal.

[0014] Optional, safety control board includes:

[0015] A control module, whose first input terminal receives a first control signal, whose second input terminal receives a second control signal, and whose third input terminal is connected to the main board, and is used to output a power-on control signal when both the first control signal and the second control signal are valid and a door lock short-circuit signal is received;

[0016] A relay coil module, a first end of which is connected to the output end of the control module, a second end of which receives a first control signal, and a third end of which receives a second control signal, and is used to be powered on when a power-on control signal is received and both the first control signal and the second control signal are valid;

[0017] The relay switch module is connected to the main board and is used to conduct when the relay coil module is energized to output a door lock short-circuit feedback signal to the main board.

[0018] Optionally, the control module outputs a power-off control signal when at least one of the leveling door zone signals and the middle door zone signal both change from valid signals to invalid signals;

[0019] The relay coil module is powered off when receiving the power-off control signal and the second control signal is an invalid signal;

[0020] The relay switch module is disconnected when the relay coil module is powered off to output a door lock disconnect feedback signal to the main board.

[0021] Optionally, the safety control panel also includes:

[0022] A first isolation module, whose input end is connected to the output end of the first signal processing module, and whose output end is connected to the first input end of the control module, for performing signal transmission isolation between the first signal processing module and the control module;

[0023] The second isolation module has an input end connected to the output end of the second signal processing module and an output end connected to the second input end of the control module, and is used for signal transmission isolation between the second signal processing module and the control module.

[0024] A second aspect of an embodiment of the present invention provides an electronic device, the electronic device comprising the elevator safety operation device of the first aspect.

[0025] A third aspect of an embodiment of the present invention provides a method for safe operation of an elevator, which is applied to an elevator mainboard, and the method includes:

[0026] Obtaining the leveling door zone signal, the middle door zone signal and the elevator operation status, wherein the leveling door zone signal includes the upper leveling door zone signal and the lower leveling door zone signal;

[0027] When at least one of the leveling door zone signals and the middle door zone signal are valid signals, and the elevator operation status meets the early door opening condition or the re-leveling condition, the door lock short-circuit signal is output to the safety control board, and the early door opening operation or the re-leveling operation is performed when the door lock short-circuit feedback signal is received.

[0028] A fourth aspect of an embodiment of the present invention provides a method for safe operation of an elevator, which is applied to a safety control board, and the method includes:

[0029] Obtaining the leveling door zone signal, the middle door zone signal and the control signal output by the main board, wherein the leveling door zone signal includes the upper leveling door zone signal and the lower leveling door zone signal;

[0030] When at least one of the leveling door zone signals and the middle door zone signal are valid signals, and the controlled signal is a door lock short-circuit signal, the door lock is controlled to be short-circuited and a door lock short-circuit feedback signal is output to the main board, so that the main board performs an early door opening operation or a re-leveling operation.

[0031] A fifth aspect of an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the elevator safety operation method of the third aspect and the fourth aspect are implemented.

[0032] The technical effect of the embodiment of the present invention is: through the coordinated work of the detection module, the main board and the safety control board, in the three-door zone signal scenario with only the upper leveling door zone signal, the lower leveling door zone signal and the middle door zone signal, comprehensive door zone judgment and function control are achieved, and the early door opening operation and re-leveling operation can be accurately triggered according to the comprehensive judgment of the leveling door zone signal and the middle door zone signal, while ensuring the safety and reliability of the door lock short circuit, effectively solving the misjudgment problem caused by insufficient signals, and improving the operating efficiency and safety of the elevator system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0034] Figure 1 It is a structural schematic diagram of an elevator safety operation device provided by the prior art;

[0035] Figure 2 This is a first structural schematic diagram of an elevator safety operation device provided in Embodiment 1 of the present invention;

[0036] Figure 3 This is a second structural schematic diagram of an elevator safety operation device provided in the first embodiment of the present invention;

[0037] Figure 4 This is a third structural schematic diagram of an elevator safety operation device provided in the first embodiment of the present invention;

[0038] Figure 5 This is a fourth structural schematic diagram of an elevator safety operation device provided in Embodiment 1 of the present invention;

[0039] Figure 6 This is a fifth structural schematic diagram of an elevator safety operation device provided in Embodiment 1 of the present invention;

[0040] Figure 7 It is a schematic diagram of the elevator position structure controlled by an elevator safety operation device provided in Embodiment 1 of the present invention;

[0041] Figure 8 is a circuit diagram of an elevator safety operation device provided in Embodiment 1 of the present invention;

[0042] Fig. 9 is a flow chart of a method for safe operation of an elevator provided in Embodiment 2 of the present invention;

[0043] Fig.10is a flow chart of a method for safe operation of an elevator provided in Embodiment 3 of the present invention;

[0044] In the figure: 10, main board; 20, safety control board; 30, detection module; 31, first signal processing module; 32, second signal processing module; 201, control module; 202, relay coil module; 203, relay switch module; 204, first isolation module; 205, second isolation module; 221, first relay coil module; 222, second relay coil module; 223, third relay coil module; 231, first relay switch; 232, second relay switch; 233, third relay switch. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0047] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0048] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0049] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0050] Embodiment 1

[0051] This embodiment provides an elevator safety operation device, such as Figure 2 As shown, including:

[0052] The detection module 30 is used to detect the position of the elevator and output a leveling door zone signal and a middle door zone signal DZZ, wherein the leveling door zone signal includes an upper leveling door zone signal DZ1 and a lower leveling door zone signal DZ2;

[0053] The main board 10 is connected to the detection module 30, and is used to obtain the elevator operation state and receive the leveling door zone signal and the middle door zone signal DZZ, and output the door lock short-circuit signal M1 when at least one of the leveling door zone signals and the middle door zone signal DZZ are valid signals and the elevator operation state meets the early door opening condition or the re-leveling condition;

[0054] The safety control board 20 is respectively connected to the detection module 30 and the main board 10, and is used to receive the leveling door zone signal and the middle door zone signal DZZ. When at least one of the leveling door zone signals and the middle door zone signal DZZ are valid signals and the door lock short-circuit signal M1 is received, the door lock is short-circuited and a door lock short-circuit feedback signal M2 is output to the main board 10, so that the main board 10 performs an early door opening operation or a re-leveling operation.

[0055] Among them, the detection module 30 detects the position of the elevator and outputs the leveling door area signal and the middle door area signal DZZ. The detection module 30 can be a position sensor, which collects the upper leveling door area signal DZ1 and the lower leveling door area signal DZ2. For example, the position sensor is a commonly used magnetic switch, photoelectric switch or inductive sensor, which is installed at the position corresponding to each floor in the elevator shaft. When the car runs to the position, the detection module 30 is triggered to output the corresponding high-level signal. The upper leveling sensor is installed above the leveling position of each floor, and the lower leveling sensor is installed in the area below the leveling position of each floor. The middle door area signal DZZ is obtained by a middle door area sensor similar to the leveling sensor, but the installation position is different. The middle door area sensor is installed at a designated position in the middle of the door area of ​​each floor. When the car runs to the middle position of the door area, the middle door area sensor is triggered to output the middle door area signal DZZ. The three-door zone signals output by the detection module 30 are connected to the input ports of the main board 10 and the safety control board 20. The main board 10 and the safety control board 20 collect the status of the three-door zone signals output by the detection module 30 to determine whether the upper leveling door zone signal DZ1, the lower leveling door zone signal DZ2, and the middle door zone signal DZZ are valid.

[0056] Among them, the main board 10 is the control center of the elevator system, which is used to process information from each module and perform corresponding operations. The main board 10 monitors the position of the elevator in real time through the detection module 30, and the main board 10 also obtains the elevator operation status information in real time. The upper leveling door area signal DZ1 and the lower leveling door area signal DZ2 indicate whether the elevator has reached the leveling (the position where the door is aligned with the floor), and the middle door area signal DZZ indicates whether the elevator is close to the middle door area (open door area). The main board 10 obtains the position of the elevator according to the three door area signals. The elevator operation status may include at least one of the running speed, running direction, door opening state, target floor, etc. The running speed is used to determine whether the elevator is lower than the set value of the early door opening function or the re-leveling function or other functions, the running direction is used to determine whether the elevator moves up or down, the door opening state is used to determine the state of the elevator door, and the target floor is used to determine the relevant signals of the current elevator operation target floor. The real-time running speed of the elevator can be obtained by installing a rotary encoder on the elevator traction machine. The rotary encoder outputs a pulse signal, which is counted and converted into speed information by the main board 10. The rotary encoder can also output A and B phase signals, and the direction is determined by the phase relationship. The main board 10 can also set the direction flag (such as up / down) according to the signal of the rotary encoder. In the elevator door lock control circuit, the main board 10 determines the door opening state by detecting the state of the door lock switch (open / closed). The main board 10 collects various signals through signals of equipment such as position sensors, encoders, and door lock switches. When at least one of the leveling door area signals and the middle door area signal DZZ are valid signals, the main board 10 can determine that the elevator has reached or is close to the middle door area, that is, it determines that the elevator position meets the front door opening condition or the re-leveling condition, and outputs the door lock short-circuit signal M1 when the elevator running state meets the early door opening condition or the re-leveling condition. Early door opening means that the elevator should open the door in advance when the preset conditions are met (such as when the elevator reaches a certain floor or leveling position) to improve the efficiency of passengers getting on and off the elevator. Re-leveling means that the elevator may not have completely reached the leveling position during operation, and needs to be readjusted to the leveling position to ensure that the elevator door is aligned with the floor door. If the above conditions are met, the main board will send a door lock short circuit signal M1, instructing the safety control board 20 to control the door lock to enter a short circuit state. The elevator door lock short circuit means that the elevator door lock is released or the door lock circuit is connected, so that the elevator door can be opened safely. The main board 10 feeds back the door lock short circuit signal M1 to the safety control board 20 through the communication interface, and the door lock short circuit signal M1 can be transmitted to the safety control board 20 through the communication interface, such as CAN bus, 485 or terminal.

[0057] Among them, the safety control board 20 is a key component in the elevator system to ensure the safety of the elevator. It receives the door lock short-circuit signal M1 and controls the operation of the elevator door lock to ensure that the elevator operates under safe conditions. The safety control board 20 is connected to both the detection module 30 and the main board 10. On the one hand, it receives the door lock control signal sent by the main board 10, and on the other hand, it monitors the position signal of the elevator (such as the leveling door area signal and the middle door area signal DZZ) in real time. When the safety control board 20 detects that at least one of the leveling door area signals is valid, it determines that the elevator position has reached or is close to the leveling area. When the middle door area signal DZZ is detected to be valid, it determines that the elevator is or has reached the middle door area. When the main board 10 sends a door lock short-circuit signal M1 according to the position and state of the elevator (for example, meeting the conditions for early door opening or re-leveling), after the safety control board 20 receives the door lock short-circuit signal M1, it controls the door lock short-circuit circuit to be turned on, so that the door lock is released, and then the elevator door is in a waiting state. Afterwards, the safety control board 20 will also feedback a door lock short circuit status signal to the main board 10, informing the main board 10 that the door lock has been released and the door opening action is completed. After receiving the door lock short circuit feedback signal, the main board 10 opens the elevator door in advance according to the current state of the elevator, or controls the elevator to make a re-leveling adjustment when the elevator is not completely leveled, to ensure that the door can be aligned with the floor, and then opens the elevator door.

[0058] The technical solution provided in the first embodiment has the following beneficial effects: through the coordinated work of the detection module, the main board and the safety control board, in the scenario of three door zone signals with only the upper leveling door zone signal, the lower leveling door zone signal and the middle door zone signal, comprehensive door zone judgment and function control are achieved, and early door opening and re-leveling operations can be accurately triggered based on the comprehensive judgment of the leveling door zone signal and the middle door zone signal, while ensuring the safety and reliability of the door lock short-circuit, effectively solving the problem of misjudgment caused by insufficient signals, and improving the operating efficiency and safety of the elevator system.

[0059] Furthermore, in this embodiment, two elevator operation modes of early door opening and re-leveling are described:

[0060] As the first elevator operation mode: when at least one of the leveling door area signals and the middle door area signal DZZ are valid signals, and the elevator operation status meets the early door opening condition, the main board 10 sends a door lock short-circuit signal M1 to the safety control board 20; when the safety control board 20 detects that at least one of the leveling door area signals and the middle door area signal DZZ are valid signals, and receives the door lock short-circuit signal M1, it controls the door lock to be short-circuited and outputs a door lock short-circuit feedback signal M2 to the main board 10, so that the main board 10 performs the early door opening operation.

[0061] Among them, the main board 10 receives the upper leveling door area signal DZ1 and the lower leveling door area signal DZ2 from each sensor, determines whether at least one door area signal is valid, and receives the middle door area signal DZZ and determines its validity. The main board 10 obtains the elevator operation status information including: elevator speed, running direction and target floor. The main board 10 determines whether the elevator position conditions meet the early door opening conditions including: at least one door area signal in the leveling door area signal is valid, the middle door area signal DZZ is valid, and the elevator operation status meets the early door opening conditions: the speed is lower than the set value, the direction is correct, and the target floor is about to arrive. If the early door opening conditions are met, a door lock short-circuit signal M1 is generated, and the door lock short-circuit signal M1 is sent to the safety control board 20 through the communication interface. The safety control board 20 receives the status of the leveling door zone signal and the middle door zone signal DZZ. When at least one of the leveling door zone signals is valid and the middle door zone signal DZZ is valid, it receives the door lock short-circuit signal M1 sent by the main board 10, confirms that the short-circuit door lock condition is met, short-circuits the front door and rear door locks, and then feeds back the door lock short-circuit status signal to the main board 10, notifying the main board 10 that the door lock has been released and the door opening preparation action is completed. After receiving the feedback signal, the main board 10 opens the elevator door in advance.

[0062] The technical effect of this implementation is that by optimizing the elevator door lock control and signal interaction logic, not only the operating efficiency and safety of the elevator are improved, but also the passenger experience is greatly improved, especially during peak hours or emergency situations. It can effectively reduce the response delay of the elevator door opening and ensure fast and safe door opening operations.

[0063] As a second elevator operation mode: when at least one of the leveling door area signals and the middle door area signal DZZ are valid signals, and the elevator operation status meets the re-leveling conditions, the main board 10 sends a door lock short-circuit signal M1 to the safety control board 20; when the safety control board 20 detects that at least one of the leveling door area signals and the middle door area signal DZZ are valid signals, it controls the door lock to be short-circuited according to the door lock short-circuit signal M1 and outputs a door lock short-circuit feedback signal M2 to the main board 10, so that the main board 10 performs a re-leveling operation.

[0064] Among them, the main board 10 receives the upper leveling door zone signal DZ1 and the lower leveling door zone signal DZ2 from each sensor, determines whether at least one door zone signal is valid, and receives the middle door zone signal DZZ and determines its validity. The main board 10 obtains the elevator operation status information including: elevator speed, operation direction and door opening status. The main board 10 determines whether the elevator operation status meets the re-leveling conditions, including: the elevator speed is lower than the set re-leveling speed threshold, the elevator is in the door opening state, and the car has deviated from the target leveling position. If the re-leveling conditions are met, a door lock short-circuit signal M1 is generated. The command is sent to the safety control board 20 through the communication interface. The safety control board 20 receives the status of the leveling door area signal and the middle door area signal DZZ. When at least one of the leveling door area signals is valid and the middle door area signal DZZ is valid, and the door lock short-circuit signal M1 is received, the relay and related control circuits are driven to control the door lock to short-circuit and output the door lock short-circuit feedback signal M2 to the main board 10. The main board 10 starts the re-leveling speed mode, controls the car to safely return to the target door area position, and then opens the elevator door.

[0065] The technical effect of this implementation is that accurate re-leveling control is achieved through leveling signal monitoring and elevator operation status judgment, and the door lock short-circuit signal is automatically generated and executed through the safety control board to ensure that the elevator door is correctly unlocked to avoid safety hazards. At the same time, the real-time feedback mechanism enhances the collaboration between the main board and the safety control board, optimizes the elevator response speed and operating efficiency, improves the safety and operating reliability of the elevator, and enhances the passenger experience.

[0066] As an embodiment, the safety control board 20 is also used to control the door lock to disconnect and output a door lock disconnect feedback signal to the main board 10 when the elevator is in a leveling door open state and detects that at least one of the leveling door zone signals and the middle door zone signal DZZ have changed from valid signals to invalid signals, so that the main board 10 performs an unexpected protection operation.

[0067] Among them, the safety control board 20 is also used to detect that at least one of the leveling door area signals and the middle door area signal DZZ are changed from valid signals to invalid signals when the elevator is in the leveling door opening state. The leveling door area signal is used to indicate whether the elevator is in the leveling area (such as the upper leveling or the lower leveling), and the middle door area signal DZZ is used to determine whether the elevator is close to the middle door position. When the state of the leveling door area signal and the middle door area signal DZZ changes from valid (the elevator is in a safe door area position) to invalid (the elevator has deviated from the door area position or moved abnormally), the safety control board 20 will detect this change and believe that the elevator has entered an unsafe state. At this time, the safety control board 20 immediately controls the elevator door lock to disconnect, ensuring that the elevator door will not be opened in an unsafe position, and preventing passengers from falling or other accidents due to the elevator door opening by mistake. After executing the door lock disconnection operation, the safety control board 20 will send a door lock disconnection feedback signal to the main board 10 to inform the main board 10 that the door lock has been successfully disconnected. This feedback mechanism ensures that the main board 10 can grasp the state of the door lock in real time. When the main board 10 detects that at least one of the leveling door zone signals and the middle door zone signal DZZ have changed from valid signals to invalid signals when the elevator is in the leveling door open state, and receives the door lock disconnection feedback signal, it will stop the elevator, sound an alarm to alert the maintenance personnel, and lock the elevator operation panel to prevent passengers from operating it by mistake. These protection operations can ensure that the elevator stops running in an abnormal state, thereby preventing accidents from expanding and protecting the safety of passengers.

[0068] The technical effect of this implementation is that when the elevator deviates from a safe position to an unsafe position, the safety control board immediately disconnects the door lock and notifies the main board by monitoring the signal changes. The main board then performs an unexpected protection operation to ensure that the elevator will not continue to run or open the elevator door by mistake in an unsafe state, effectively preventing safety accidents and improving the safety and reliability of the system.

[0069] As an implementation method, Figure 3 As shown, the detection module 30 includes an upper leveling sensor, a middle door area sensor and a lower leveling sensor;

[0070] A first signal processing module 31, whose input end is respectively connected to the output end of the upper leveling sensor and the output end of the lower leveling sensor, and whose output end is connected to the first input end of the safety control board 20, for outputting a first control signal FL1 according to the upper leveling door zone signal DZ1 and the lower leveling door zone signal DZ2;

[0071] The second signal processing module 32 has an input end connected to the output end of the middle door zone sensor and an output end connected to the second input end of the safety control board 20 , and is used to output a second control signal FL2 according to the middle door zone signal DZZ.

[0072] Among them, the first signal processing module 31 receives the upper leveling door zone signal DZ1 and the lower leveling door zone signal DZ2 outputted from the upper leveling sensor and the lower leveling sensor respectively. If at least one of the upper leveling door zone signal DZ1 and the lower leveling door zone signal DZ2 is valid (for example, the door zone signal is at a high level), the signal processing module 30 outputs a valid first control signal FL1. If both the upper leveling door zone signal DZ1 and the lower leveling door zone signal DZ2 are invalid first control signals FL1 (for example, the door zone signal is at a low level), the first signal processing module 31 outputs an invalid signal. The unified output signal after the logic operation is transmitted to the safety control board 20 as a basis for further controlling the operation of the elevator. The first signal processing module 31 includes but is not limited to the following circuit structures: an OR logic gate, an OR function logic unit formed by a combination of different logic gates, a structure in which two diode output ends are connected in common, a relay input end is connected to a power supply output end and then outputted in parallel, a structure in which the output ends of the optocoupler isolator are connected in parallel and then outputted, and the like. The second signal processing module 32 transmits the processed signal to the second input terminal of the safety control board 20. According to the signal DZZ of the middle door zone sensor, the second signal processing module 32 generates a second control signal FL2, which indicates whether the elevator is in the middle door zone. For example, the middle door zone signal DZZ can be output after being unidirectionally conducted by a diode, which has a single-pass characteristic, ensuring that the middle door zone signal DZZ can be triggered in one direction, thereby avoiding the signal from flowing in reverse or interfering with other circuits.

[0073] The technical effect of this implementation is that the signal processing module integrates the upper leveling door signal area and the lower leveling door area signals into a unified output signal, and directly transmits it to the safety control board. As long as one of the signals is valid, the safety control board is enabled to perform the corresponding operation, reducing the safety control board's direct processing requirements for multiple signals, significantly reducing the system complexity, and being able to respond to changes in door area signals in real time, ensuring the rapidity and stability of elevator operation control.

[0074] As an implementation method, Figure 4 As shown, the safety control panel 20 includes:

[0075] The control module 201 has a first input terminal receiving a first control signal FL1, a second input terminal receiving a second control signal FL2, and a third input terminal connected to the main board 10, and is used to output a power-on control signal FL3 when both the first control signal FL1 and the second control signal FL2 are valid and the door lock short-circuit signal M1 is received;

[0076] The relay coil module 202 has a first end connected to the output end of the control module 201, a second end receiving the first control signal FL1, and a third end receiving the second control signal FL2, and is used to power on when receiving the power-on control signal FL3 and both the first control signal FL1 and the second control signal FL2 are valid.

[0077] The relay switch module 203 is connected to the main board 10 and is used to be turned on when the relay coil module 202 is powered on, so as to output a door lock short-circuit feedback signal M2 to the main board 10 .

[0078] Among them, the control module 201 receives the leveling door zone signal, the middle door zone signal DZZ and the door lock control signal of the main board 10 respectively. The control module 201 determines whether the door lock short circuit condition is met according to the received three door zone signals and the door lock control signal, including whether the door zone signal is valid and whether the door lock control signal is the door lock short circuit signal M1. According to the judgment result, the control signal is output to the relay coil module 202 to indicate that it is powered on or off. The first end of the relay coil module 202 receives the control signal FL3 of the control module 201, and the second end and the third end receive the first control signal FL1 and the second control signal FL2 respectively. According to the signal state of the control signal FL3 of the control module 201, the first control signal FL1 and the second control signal FL2 are executed to power on or off: when all control signals meet the requirements, for example, when one end of the relay coil module 202 is high level and the other end is low level, the relay coil module 202 is powered on, otherwise, the relay coil module 202 is powered off. When the relay coil module 202 is powered on, the corresponding relay switch module 203 is turned on. When the main board 10 detects that the relay switch module 203 is turned on, it controls the elevator to perform corresponding functions, such as early door opening function or re-leveling function. When the relay coil module 202 is powered off, the relay switch module 203 is turned off, cutting off the control of the main board 10 on the elevator.

[0079] The technical effect of this implementation is that through the coordinated work of the control module, the relay coil module and the relay switch module, precise control of the elevator operation is achieved, and it can adapt to various elevator control needs, such as early door opening, re-leveling, accidental movement protection, etc., to achieve efficient and safe operation of the elevator and provide reliable protection for the elevator operation system.

[0080] As an implementation mode, the control module 201 outputs a power-off control signal FL3 when at least one of the leveling door zone signals and the middle door zone signal DZZ both change from valid signals to invalid signals;

[0081] The relay coil module 202 is powered off when receiving the power-off control signal FL3 and the second control signal is an invalid signal;

[0082] The relay switch module 203 is disconnected when the relay coil module 202 is powered off, so as to output a door lock disconnection feedback signal M2 to the main board 10 .

[0083] Among them, when the leveling door zone signal and the middle door zone signal DZZ are no longer valid, the control module 201 determines that the elevator is no longer in a safe or ready to open state. In this case, the control module 201 outputs a power-off control signal FL3 to instruct the main board 10 to stop or cut off the power supply to ensure that the elevator door is no longer opened to avoid potential safety hazards. After the relay coil module 202 receives the power-off control signal FL3 from the control module 201, it indicates that the system needs to disconnect the power supply to ensure safety. When the second control signal is invalid, it means that no safety conditions are met and the main board 10 should stop the current operation. Under these conditions, the relay coil module 202 performs a power-off operation to cut off the power supply to prevent the door lock from continuing to work or the elevator door from opening. The relay switch module 203 cooperates with the relay coil module 202 to actually cut off or connect the circuit. When the relay coil module 202 is powered off, the switching action of the relay switch module 203 will be executed to ensure that the circuit of the door lock is disconnected. After the relay switch module 203 is disconnected, a signal will be fed back to the main board 10, indicating that the door lock has been successfully disconnected and the elevator door is in a safe closed state.

[0084] The technical effect of this implementation is to ensure that the elevator door lock system can automatically cut off the power when in an unsafe or inappropriate state, prevent misoperation or safety hazards, and improve the reliability and safety of the system.

[0085] As an example, Figure 5 As shown, the relay coil module 202 includes:

[0086] A first relay coil module 221, a first end of which is connected to the first output end of the control module 201, a second end of which is connected to the output end of the second signal processing module 32, and a third end of which is connected to the output end of the first signal processing module 31, and is used to be energized or not energized according to the control signal FL3 of the control module 201, the first control signal FL1, and the second control signal FL2;

[0087] A second relay coil module 222, a first end of which is connected to the first output end of the control module 201, a second end of which is connected to the output end of the first signal processing module 31, and a third end of which is connected to the output end of the second signal processing module 32, and is used to be energized or not energized according to the control signal FL3 of the control module 201, the first control signal FL1, and the second control signal FL2;

[0088] The third relay coil module 223 has a first end connected to the first output end of the control module 201, a second end connected to the output end of the second signal processing module 32, and a third end connected to the first output end of the second signal processing module 32, and is used to power on or off according to the control signal FL3 of the control module 201 and the second control signal FL2.

[0089] The relay switch module 203 includes:

[0090] A first relay switch 231, which is connected to the main board 10 and is used to turn on or off according to the power-on state of the first relay coil module 221, so that the main board 10 controls the operation of the elevator;

[0091] A second relay switch 232, which is connected to the main board 10 and is used to turn on or off according to the power-on state of the second relay coil module 222, so that the main board 10 controls the operation of the elevator;

[0092] The third relay switch 233 is connected to the main board 10 and is used to switch on or off according to the power-on state of the third relay coil module 223 so that the main board 10 controls the operation of the elevator.

[0093] Among them, the first relay coil module 221, the second relay coil module 222 and the third relay coil module 223 are powered on when the control signal FL3, the first control signal FL1 and the second control signal FL2 of the control module 201 received are all valid signals, the first relay switch 231, the second relay switch 232 and the third relay switch 233 are all turned on, and the main board 10 detects that the relay switches are all turned on and controls the elevator to perform the early door opening function or the re-leveling function. The first relay coil module 221, the second relay coil module 222 and the third relay coil module 223 are not turned on when the second control signal FL2 received is an invalid signal, the first relay switch 231, the second relay switch 232 and the third relay switch 233 are all turned off, and the main board 10 detects that the relay switches are all turned off and controls the elevator not to perform the early door opening function or the re-leveling function.

[0094] As an implementation method, Figure 6 As shown, the safety control panel 20 also includes:

[0095] A first isolation module 204, whose input end is connected to the output end of the first signal processing module 31, and whose output end is connected to the first input end of the control module 201, is used for signal transmission isolation between the first signal processing module 31 and the control module 201;

[0096] The second isolation module 205 has an input end connected to the output end of the second signal processing module 32 and an output end connected to the second input end of the control module 201 , and is used for signal transmission isolation between the second signal processing module 32 and the control module 201 .

[0097] Among them, the first isolation module 204 receives the first control signal FL1 from the first signal processing module 31, isolates the first control signal FL1, and transmits the signal to the first input end of the control module 201. The second isolation module 205 receives the second control signal FL2 from the second signal processing module 32, isolates the signal, and transmits the signal to the second input end of the control module 201. The first isolation module 204 and the second isolation module 205 implement electrical isolation between the signal processing module 30 and the control module 201, avoid the propagation of electromagnetic interference (EMI) or common mode noise, and protect the stability of the system. The first isolation module 204 and the second isolation module 205 can use an optical coupler to convert the input signal into an optical signal, and then restore it to an electrical signal after isolation. An isolation transformer or an electromagnetic coupler can also be used to achieve signal and electrical isolation.

[0098] The technical effect of this embodiment is that the electrical connection between the signal processing module and the control module is effectively isolated through the first isolation module and the second isolation module, thereby avoiding the impact of electrical short circuit, overvoltage or other faults on the entire system, thereby improving the safety and reliability of the system.

[0099] The embodiment of the present invention is described in detail below through a specific circuit structure:

[0100] like Figure 7 As shown in the figure, the elevator is divided into the upper level, the middle door area and the lower level according to its position. The elevator stops at the middle door area between the upper and lower levels. Sensors are set in the upper level, the middle door area and the lower level to detect the running position of the elevator. Figure 8As shown, pin 1 and pin 2 of the main board 10 are connected to the M24 voltage signal and the MCM signal respectively, pin 3 of the main board 10 is connected to the anode of the diode D1 and one end of the switch K3 respectively, the other end of the switch K3 is connected to the M24 voltage signal, and when it is turned on, the upper leveling door zone signal DZ1 is output, pin 4 of the main board 10 is connected to the anode of the diode D2 and one end of the switch K2 respectively, the other end of the switch K2 is connected to the M24 voltage signal, and when it is turned on, the lower leveling door zone signal DZ2 is output, pin 5 of the main board 10 is connected to the anode of the diode D3 and one end of the switch K1 respectively, the other end of the switch K1 is connected to the M24 voltage signal, and when it is turned on, the middle door zone signal DZZ is output, and the cathode of the diode D1 and the cathode of the diode D2 are connected in common After that, it is connected to pin 3 of the safety control board 20, and the FL1_C signal is output to pin 3 of the safety control board 20. Pin 3 of the safety control board 20 is also connected to the first input end of the optocoupler Q1, and the first output end of the optocoupler Q1 is connected to pin 1 of the MCU. The cathode of the diode D3 is connected to pin 4 of the safety control board 20, and the FL2 signal is output to pin 4 of the safety control board 20. Pin 3 of the safety control board 20 is also connected to the first input end of the optocoupler Q2, and the first output end of the optocoupler Q2 is connected to pin 2 of the MCU, and the FL2_C signal is output to pin 2 of the MCU. Pin 1 and pin 2 of the safety control board 20 are respectively connected to the M24 signal and the MCM signal. The two inputs of the BUCK circuit The two output ends of the BUCK circuit are respectively connected to the two input ends of the LDO circuit, the other output end of the BUCK circuit and the output end of the LDO circuit are also respectively connected to the input end of the watchdog power monitoring circuit, the output end of the watchdog power monitoring circuit is connected to the RST pin of the MCU, the output end of the encryption circuit EEROM is connected to the IIC pin of the MCU, the pin 3 of the MCU is connected to the first end of the AND gate A1, and the Y1_MCU signal is output to the first end of the AND gate A1, the second end of the AND gate A1 is connected to the FL2 signal, the output end of the AND gate A1 is connected to the input end of the NOT gate B1, the output end of the NOT gate B1 is connected to one end of the K1 relay coil, and the K1 relay line The other end of the coil is connected to the FL1 signal; Pin 4 of the MCU is connected to the first end of the AND gate A2, and outputs the Y2_MCU signal to the first end of the AND gate A2, the second end of the AND gate A2 is connected to the FL1 signal, the output end of the AND gate A2 is connected to the input end of the NOT gate B2, the output end of the NOT gate B2 is connected to one end of the K2 relay coil, and the other end of the K2 relay coil is connected to the FL2 signal; Pin 5 of the MCU is connected to the first end of the AND gate A3, and outputs the Y4_MCU signal to the first end of the AND gate A2, the second end of the AND gate A3 is connected to the FL2 signal, the output end of the AND gate A3 is connected to the input end of the NOT gate B3, the output end of the NOT gate B3 is connected to one end of the K4 relay coil, and the other end of the K4 relay coil is connected to the FL2 signal;Pin 6 of the MCU is connected to the first end of the AND gate A4, and outputs the Y5_MCU signal to the first end of the AND gate A4, the second end of the AND gate A4 is connected to the FL1 signal, the output end of the AND gate A4 is connected to the input end of the NOT gate B4, the output end of the NOT gate B4 is connected to one end of the K5 relay coil, and the other end of the K5 relay coil is connected to the FL2 signal; Pin 7 of the MCU is connected to the first end of the AND gate A5, and outputs the Y6_MCU signal to the first end of the AND gate A5, the second end of the AND gate A5 is connected to the FL2 pin, and the output end of the AND gate A5 is connected to the input end of the NOT gate B4. 5, the output end of the NOT gate B5 is connected to one end of the K6 relay coil, and the other end of the K6 relay coil is connected to the FL1 signal; the K1_C pin of the MCU is connected to the relay switch K1_2, the K2_C pin of the MCU is connected to the relay switch K2_2, the K4_C pin of the MCU is connected to the relay switch K4_2, the K5_C pin of the MCU is connected to the relay switch K5_2, the K6_C pin of the MCU is connected to the relay switch K6_2, and the pin 8 of the main board 10 is respectively connected to one end of the switch K4 and the pin 7 of the safety control board 20 , pin 7 of the safety control board 20 is connected to one end of the switch K1_1, pin 9 of the main board 10 is respectively connected to the other end of the switch K4 and one end of the switch K5, pin 10 of the main board 10 is respectively connected to the other end of the switch K5, one end of the switch K6 and pin 8 of the safety control board 20, pin 8 of the safety control board 20 is also connected to one end of the switch K2_1, pin 11 of the main board 10 is respectively connected to the other end of the switch K6, one end of the switch K7 and pin 9 of the safety control board 20, pin 9 of the safety control board 20 is respectively connected to switch K1 _1, the other end of switch K2_1 and one end of switch K4_1, the pin 12 of the main board 10 is respectively connected to the other end of switch K7 and the pin 10 of the safety control board 20, the pin 10 of the safety control board 20 is also connected to the other end of switch K4_1, the first end of the additional brake is connected to one end of switch K5_1 through the pin 11 of the safety control board 20, the second end of the additional brake is connected to one end of switch K6_1 through the pin 12 of the safety control board 20, and the other end of switch K5_1 is connected to the other end of switch K6_1. ;

[0101] Among them, the three door zone signals are the upper leveling door zone signal DZ1, the middle door zone signal DZZ, and the lower leveling door zone signal DZ2. The three door zone signals are all output to the main board 10 as DI detection. The main board 10 can identify whether the three door zone signals are valid or invalid. The upper leveling door zone signal DZ1 is output to the pin 3 of the safety control board 20 after passing through the diode D1, and the lower leveling door zone signal DZ2 is output to the pin 3 of the safety control board 20 after passing through the diode D2. When the upper leveling door zone signal DZ1 or the lower leveling door zone signal D As long as there is a valid signal in Z2, the output FL1 signal is a valid signal (high level signal). Only when the upper leveling door zone signal DZ1 or the lower leveling door zone signal DZ2 is invalid, the output FL1 signal is an invalid signal (low level signal). The middle door zone signal DZZ is output to pin 4 of the safety control board 20 after passing through the anti-reverse diode D3. The output FL2 signal is output to the safety control board 20 as another DI. Whether the FL2 signal is valid is consistent with the middle door zone signal DZZ.

[0102] The process of realizing the early door opening function of this circuit structure is as follows: The early door opening function means that when the set destination floor is about to be reached, in order to improve the door opening efficiency, before all door zone signals are valid, and when the main board 10 detects that the elevator speed is lower than a certain value, the door lock can be short-circuited to perform early door opening. When the main board 10 recognizes that the set destination floor is about to be reached, and the main board 10 detects that the elevator speed is lower than the preset value, it outputs a door lock short-circuit signal. Taking the upward destination floor 5 as an example, when the 5th floor is about to be reached, the upper level door zone signal DZ1 and the middle door zone signal DZZ are valid in sequence. At this time, the FL1 signal and FL2 signal received by the safety control board 20 are also valid. When the main board 10 recognizes that the elevator speed is lower than a certain value at this time, the main board 10 sends a door lock short-circuit signal to the safety control board 20 through CAN communication. After the safety control board 20 receives the door lock short-circuit signal, the MCU controls the Y in the DO signal 1_MCU signal, Y2_MCU signal, Y4_MCU signal, Y5_MCU signal, and Y6_MCU signal are all valid. Since FL1 signal and FL2 signal are also valid, K1 relay coil, K2 relay coil, K4 relay coil, K5 relay coil, and K6 relay coil are all energized, and corresponding normally open contacts K1_1, K2_1, K4_1, K5_1, and K6_1 are all energized, so that front hall door lock K4, front car door lock K5, rear car door lock K6, and rear hall door lock K7 can all be short-circuited, and main board 10 can open the door in advance.

[0103] The process of realizing the re-leveling function of this circuit structure is as follows: the re-leveling function means that when the car is in the leveling and door-opening state, the car can return to the door area at the re-leveling speed if the car is out of only one of the upper leveling DZU and the lower leveling DZD (downward is the lower leveling, upward is the upper leveling) due to some normal factors such as heavy objects. When the main board 10 recognizes that the car is in the leveling and door-opening state, and the main board 10 detects that the speed is lower than a certain value, it is confirmed that the elevator operation state meets the re-leveling execution conditions. Take the re-leveling on the 5th floor with the door open as an example. At this time, the lower leveling door zone signal DZ2 changes from valid to invalid, the middle door zone signal DZZ and the upper leveling door zone signal DZ1 are still valid. At this time, the FL1 signal and FL2 signal of the safety control board 20 are still valid. When the main board 10 recognizes that the three door zone signals are valid and the main board 10 recognizes that the elevator speed is lower than a certain value at this time, the main board 10 sends a door lock short-circuit signal to the safety control board 20 through CAN communication. After the safety control board 20 receives the door lock short-circuit signal, the MCU controls the Y1_MCU signal and the Y2_MCU signal in the DO signal. , Y4_MCU signal, Y5_MCU signal, and Y6_MCU signal are all valid, and FL1 signal and FL2 signal are also valid, then the K1 relay coil, K2 relay coil, K4 relay coil, K5 relay coil, and K6 relay coil are energized, and the corresponding normally open contacts are energized, so that the front hall door lock K4, the front car door lock K5, the rear car door lock K6, and the rear hall door lock K7 can all be short-circuited, and a door lock short-circuit feedback signal is output to the main board 10. After receiving the door lock short-circuit feedback signal, the main board 10 controls the elevator to return to the door area at the re-leveling speed and then open the elevator door.

[0104] This circuit structure realizes the protection function of accidental car movement as follows: accidental car movement means that when the car is level and the door is open, due to some abnormal factors, the car is separated from the upper door area and the middle door area signal is invalid, which can stop this accidental movement. Take the case where the car moves downward unexpectedly in the leveling door open state on the 5th floor as an example. At this time, the lower leveling door zone signal DZ2 and the middle door zone signal DZZ change from valid to invalid in turn, and the upper leveling door zone signal DZ1 is still valid. At this time, the FL1 signal of the safety control board 20 is still valid, but the FL2 signal is invalid, then the K1 relay coil, K2 relay coil, K4 relay coil, K5 relay coil, and K6 relay coil are disconnected, and the corresponding normally open contacts are disconnected, so that the front hall door lock K4, the front car door lock K5, the rear car door lock K6, and the rear hall door lock K7 are disconnected, and the system safety circuit is disconnected. The main board 10 simultaneously detects that the elevator is in the leveling door open state and detects that at least one of the leveling door zone signals and the middle door zone signal are changed from valid signals to invalid signals, and receives the door lock disconnection feedback signal, executes the car accidental movement protection function, controls the car to stop running, and sounds an alarm.

[0105] Embodiment 2

[0106] This embodiment 2 provides a method for safe operation of an elevator, which is applied to an elevator main board, such as Fig. 9 As shown, the elevator safe operation method includes:

[0107] Step S101. Acquire a leveling door zone signal, a middle door zone signal and an elevator operation status, wherein the leveling door zone signal includes an upper leveling door zone signal and a lower leveling door zone signal.

[0108] Step S102. When at least one of the leveling door zone signals and the middle door zone signal are valid signals, and the elevator operation status meets the early door opening condition or the re-leveling condition, a door lock short-circuit signal is output to the safety control board, and an early door opening operation or a re-leveling operation is performed when a door lock short-circuit feedback signal is received.

[0109] Among them, in step S101, the main board obtains the upper leveling door area signal and the lower leveling door area signal through the sensor or signal processing module, and detects the validity of the door area signal (high level indicates valid, low level indicates invalid). The main board obtains the middle door area signal from the middle door area sensor and determines its state (valid or invalid). The main board monitors the operating parameters of the elevator in real time, including: running speed, running direction, door opening state, target floor, etc. The running speed is used to determine whether it is lower than the set value of the early door opening function or the re-leveling function or other functions, the running direction is used to determine whether the elevator moves up or down, the door opening state is used to determine the state of the elevator door, and the target floor is used to determine the relevant signals of the current elevator running target floor. The main board generates corresponding elevator control instructions from the signal state and the running state and feeds them back to the safety control board through the communication interface to complete the control closed loop. For example, when the early door opening condition or the re-leveling condition is met, a door lock short-circuit signal is generated to indicate that the door lock enters the unlocked state. The elevator door lock short-circuit means that the elevator door lock is released or the circuit is connected, so that the elevator door can be opened safely. The main board feeds back the door lock short-circuit signal M1 to the safety control board through the communication interface, and the elevator control command can be transmitted to the safety control board through the communication interface, such as CAN bus, 485 or terminal.

[0110] As an implementation method, when at least one door zone signal and a middle door zone signal in the leveling door zone signal are valid signals and the elevator operation status meets the front door opening condition or the re-leveling condition, a door lock short-circuit signal is sent to the safety control panel.

[0111] Among them, this implementation is explained through three elevator operation modes: early door opening, re-leveling, and accidental movement protection:

[0112] 1. Early door opening conditions: at least one of the leveling door zone signals is valid, the middle door zone signal is valid, the speed is lower than the set value, the direction is correct, and the target floor is about to be reached.

[0113] 2. Re-leveling conditions: at least one of the leveling door zone signals is valid, the middle door zone signal is valid, the speed is lower than the re-leveling speed threshold, the elevator is in the door open state, and the car deviates from the target leveling position.

[0114] The corresponding elevator control instructions are generated according to the logical judgment results. The early door opening instruction is used to control the elevator door lock to unlock in advance and reduce the door opening time; the re-leveling instruction is used to start the re-leveling speed mode and adjust the car position.

[0115] The technical effect of this implementation is that by directly processing the door zone signal and operating status information on the safety control board, the judgment and execution of the elevator function are independently completed, eliminating the real-time communication dependency between the main board and the safety control board, which not only simplifies the system structure, but also improves the execution reliability of the elevator function, and avoids the problem of erroneous execution or non-execution of the re-leveling function due to communication interference.

[0116] Embodiment 3

[0117] This embodiment 3 provides a method for safe operation of an elevator, which is applied to a safety control board, such as Fig.10 As shown, the method includes:

[0118] Step S201. Acquire the leveling door zone signal, the middle door zone signal and the elevator control instruction output by the main board, wherein the leveling door zone signal includes the upper leveling door zone signal and the lower leveling door zone signal.

[0119] Step S202. When at least one of the leveling door zone signals and the middle door zone signal are valid signals and the control signal is a door lock short circuit signal, the door lock is controlled to be short circuited and a door lock short circuit feedback signal is output to the main board, so that the main board performs an early door opening operation or a re-leveling operation.

[0120] Among them, the safety control board collects the upper leveling door area signal, the lower leveling door area signal and the middle door area signal, and receives the elevator control command from the main board, verifies the validity of the leveling door area signal and the middle door area signal, and combines the main board control command to determine whether the execution conditions are met.

[0121] Among them, when at least one of the leveling door zone signals and the middle door zone signal are valid signals, according to the leveling door zone signal, the middle door zone signal and the elevator operation instruction, the door lock is controlled to be short-circuited and the door lock short-circuit feedback signal is output to the main board, so that the main board performs the early door opening operation or the re-leveling operation;

[0122] Alternatively, when the elevator is in the leveling door open state and detects that one of the door zone signals and the middle door zone signal in the leveling door zone signal changes from a valid state to an invalid state, the door lock is controlled to disconnect and a door lock disconnect feedback signal is output to the main board, so that the main board performs an unexpected protection operation.

[0123] Among them, the status check is performed according to the leveling door zone signal and the middle door zone signal. At least one of the leveling door zone signals is valid, and the middle door zone signal is valid. According to the elevator control instruction, the logical judgment is performed. The condition for early door opening is to meet the door zone signal requirements and receive the door lock short-circuit signal. The re-leveling condition is to meet the door zone signal requirements and receive the door lock short-circuit signal. The accidental movement protection condition is that all door zone signals are invalid. When executing the early door opening, the driving relay short-circuit the door lock circuit to unlock the elevator door. When executing the re-leveling function, the driving relay short-circuit the door lock circuit to unlock the elevator door, and the main board starts the re-leveling speed mode to adjust the car to the target leveling position. When executing the accidental movement protection, the door lock circuit is cut off, the emergency brake device or safety clamp is triggered, and the main board immediately stops the elevator movement. During the execution of the control operation, the door zone signal and the operating status are continuously monitored to ensure that the operation is completed safely.

[0124] The elevator safe operation method of this embodiment realizes efficient, safe and intelligent control of elevator operation through the synergy of signal acquisition, logic verification and intelligent control, and provides reliable operation guarantee for the elevator system.

[0125] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0126] An embodiment of the present application provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0127] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0128] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0129] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0130] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0131] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0132] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An elevator safety operation device, characterized in that: include: A detection module, used to detect the position of the elevator and output a leveling door zone signal and a middle door zone signal, wherein the leveling door zone signal includes an upper leveling door zone signal and a lower leveling door zone signal; A main board, the main board is connected to the detection module, and is used to obtain the elevator operation status and receive the leveling door zone signal and the middle door zone signal, and output a door lock short-circuit signal when at least one of the leveling door zone signals and the middle door zone signal are valid signals and the elevator operation status meets the early door opening condition or the re-leveling condition; A safety control board is connected to the detection module and the main board respectively, and is used to receive the leveling door zone signal and the middle door zone signal, and when at least one of the leveling door zone signals and the middle door zone signal are valid signals and the door lock short-circuit signal is received, controls the door lock to be short-circuited and outputs a door lock short-circuit feedback signal to the main board, so that the main board performs an early door opening operation or a re-leveling operation.

2. The elevator safety operation device according to claim 1, characterized in that: The safety control board is also used to control the door lock to disconnect and output a door lock disconnect feedback signal to the main board when the elevator is in a leveling door open state and detects that at least one of the leveling door zone signals and the middle door zone signal have changed from a valid signal to an invalid signal, so that the main board performs an unexpected protection operation.

3. The elevator safety operation device according to claim 1 or 2, characterized in that: The detection module includes an upper leveling sensor, a middle door area sensor and a lower leveling sensor; The elevator safety operation device also includes: A first signal processing module, whose input end is respectively connected to the output end of the upper leveling sensor and the output end of the lower leveling sensor, and whose output end is connected to the first input end of the safety control board, for outputting a first control signal according to the upper leveling door zone signal and the lower leveling door zone signal; The second signal processing module has an input end connected to the output end of the middle door zone sensor and an output end connected to the second input end of the safety control board, and is used to output a second control signal according to the middle door zone signal.

4. The elevator safety operation device according to claim 3, characterized in that: The safety control panel comprises: A control module, whose first input terminal receives the first control signal, whose second input terminal receives the second control signal, and whose third input terminal is connected to the main board, and is used to output a power-on control signal when both the first control signal and the second control signal are valid and the door lock short-circuit signal is received; a relay coil module, a first end of which is connected to the output end of the control module, a second end of which receives the first control signal, and a third end of which receives the second control signal, and is used to be powered on when the power-on control signal is received and both the first control signal and the second control signal are valid; The relay switch module is connected to the main board and is used to be turned on when the relay coil module is powered on, so as to output a door lock short-circuit feedback signal to the main board.

5. The elevator safety operation device according to claim 4, characterized in that: The control module outputs a power-off control signal when at least one of the leveling door zone signals and the middle door zone signal both change from valid signals to invalid signals; The relay coil module is powered off when receiving the power-off control signal and the second control signal is an invalid signal; The relay switch module is disconnected when the relay coil module is powered off to output a door lock disconnection feedback signal to the main board.

6. The elevator safety operation device according to claim 4 or 5, characterized in that: The safety control panel also includes: A first isolation module, whose input end is connected to the output end of the first signal processing module, and whose output end is connected to the first input end of the control module, for performing signal transmission isolation between the first signal processing module and the control module; The second isolation module has an input end connected to the output end of the second signal processing module and an output end connected to the second input end of the control module, and is used for signal transmission isolation between the second signal processing module and the control module.

7. An electronic device, characterized in that: The electronic equipment includes the elevator safety operation device according to any one of claims 1 to 6.

8. A method for safe operation of an elevator, characterized in that: Applied to an elevator mainboard, the method comprises: Acquire a leveling door zone signal, a middle door zone signal, and an elevator operation status, wherein the leveling door zone signal includes an upper leveling door zone signal and a lower leveling door zone signal; When at least one of the leveling door zone signals and the middle door zone signal are valid signals, and the elevator operation state meets the early door opening condition or the re-leveling condition, a door lock short-circuit signal is output to the safety control board, and an early door opening operation or a re-leveling operation is performed when a door lock short-circuit feedback signal is received.

9. A method for safe operation of an elevator, characterized in that: Applied to a safety control panel, the method comprises: Acquire a leveling door zone signal, a middle door zone signal, and a control signal output by the main board, wherein the leveling door zone signal includes an upper leveling door zone signal and a lower leveling door zone signal; When at least one of the leveling door zone signals and the middle door zone signal are valid signals and the controlled signal is a door lock short-circuit signal, the door lock is controlled to be short-circuited and a door lock short-circuit feedback signal is output to the main board, so that the main board performs an early door opening operation or a re-leveling operation.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the elevator safe operation method according to any one of claims 8 to 9 are implemented.

Images