Elevator flat layer returning control method, elevator control device and elevator system

Abstract

The invention discloses an elevator flat layer returning control method, an elevator control device and an elevator system. The method comprises the steps that in response to the fact that an elevator car accidentally moves, a control signal consistent with a door area signal in state is generated based on the door area signal, the control signal with the current state being invalid is converted to be valid, a reset signal is generated, and a new control signal and a new reset signal are output to a safety control panel; acquiring a first safety control signal generated by the safety control panel in response to the new control signal and the reset signal; and based on the new control signal and the first safety control signal, it is determined that the elevator return-to-flat layer is executed. According to the scheme, the reliability of elevator flat layer returning control can be improved.

Description

Technical Field

[0001] The present application relates to the field of elevator control, and in particular to an elevator return-to-leveling control method, an elevator control device and an elevator system. Background Art

[0002] Currently in the elevator industry, in order to ensure the safety performance of elevator operation, a safety control panel is used in conjunction with the elevator main control panel to jointly control the elevator operation.

[0003] During the operation of the elevator, if an unexpected movement occurs, the safety control board sends an invalid safety control signal to the main control board to control the elevator to perform safety control operations, such as emergency braking. When the elevator does not reach the door area after braking, in order to ensure the safety of the user and prevent the user from falling into the elevator shaft, the main control board needs to execute the elevator re-leveling to drive the elevator to the door area. However, after the safety control board sends an invalid safety control signal to the main control board, the main control board cannot obtain a valid safety control signal. As a result, after executing the elevator re-leveling, the main control board cannot determine that the elevator is safe and needs to execute the elevator re-leveling again, resulting in a reduction in the reliability of the elevator re-leveling control. In view of this, how to improve the reliability of the elevator re-leveling control has become an urgent problem to be solved. Summary of the invention

[0004] The main technical problem solved by the present application is to provide an elevator re-leveling control method, an elevator control device and an elevator system, which can improve the reliability of elevator re-leveling control.

[0005] In order to solve the above-mentioned technical problems, the first aspect of the present application provides an elevator re-leveling control method, including, in response to determining that an elevator car has moved unexpectedly, generating a control signal consistent with the state of the door area signal based on the door area signal, converting the control signal that is currently invalid to valid, generating a reset signal, and outputting a new control signal and a reset signal to a safety control board; wherein a target path between the safety control board and the safety control board is closed in response to the reset signal, and the target path is used to transmit the safety control signal from the safety control board; obtaining a first safety control signal generated by the safety control board in response to the new control signal and the reset signal; wherein the signal state of the first safety control signal is valid; and determining to execute the elevator re-leveling based on the new control signal and the first safety control signal.

[0006] In order to solve the above technical problems, the second aspect of the present application provides an elevator control device, including a safety control board and a main control board coupled to each other, the main control board including a memory and a processor coupled to each other, the memory is used to store computer programs, and the processor is used to execute computer programs to implement the elevator return to leveling control method described in the first aspect above.

[0007] In order to solve the above technical problems, the third aspect of the present application provides an elevator system, including a leveling sensor, a traction machine and an elevator control device as described in the second aspect above, and the leveling sensor and the traction machine are respectively coupled to the elevator control device.

[0008] In order to solve the above technical problem, the fourth aspect of the present application provides a computer-readable storage medium storing program instructions that can be executed by a processor, and the program instructions are used to implement the elevator re-leveling control method of the above first aspect.

[0009] In the above scheme, after the elevator car brakes after an unexpected movement, the car does not reach the designated stop position. At this time, at least one door zone signal is currently in an invalid state, and the current state of the safety control signal transmitted from the safety control board to the main control board is also invalid. After the safety control signal with the current state being invalid is transmitted, the target path for transmitting the safety control signal is shut off, the main control board obtains the door zone signal at the current moment, and generates a control signal consistent with the state of the door zone signal based on the door zone signal, converts the state of the control signal with the current state being invalid to generate a new control signal effectively, and generates a reset signal, and the shut-off target path responds. The elevator re-leveling is executed after the first safety control signal is turned on and the control board is closed again due to the reset signal. The safety control board generates a first safety control signal with a valid signal state in response to the new control signal. The main control board obtains the first safety control signal transmitted by the reset signal, and after obtaining the first safety control signal and the reset signal, determines to execute the elevator re-leveling. After the elevator re-leveling is executed, since the signal state of the first safety control signal is valid, the main control board determines that the elevator is safe after arriving at the door area according to the first safety control signal and the reset signal, and there is no need to execute the elevator re-leveling again, thereby solving the problem of returning to one more floor after executing the elevator re-leveling and improving the reliability of the elevator re-leveling control. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a flow chart of an embodiment of an elevator return-to-leveling control method of the present application;

[0011] Figure 2 It is a schematic diagram of the framework of an embodiment of the elevator re-leveling control device of the present application;

[0012] Figure 3 It is a schematic diagram of the framework of an embodiment of the elevator control device of the present application;

[0013] Figure 4 It is a circuit diagram of an embodiment of the elevator control device of the present application;

[0014] Figure 5 It is a schematic diagram of the framework of an embodiment of the elevator system of the present application;

[0015] Figure 6It is a schematic diagram of a framework of an embodiment of a computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] The terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship. In addition, "many" in this article means two or more than two.

[0018] See also Figure 1 , Figure 1 This is a flow chart of an embodiment of the elevator return leveling control method of the present application. Specifically, it may include the following steps:

[0019] Step S10: In response to determining that the elevator car has unexpectedly moved, a control signal consistent with the door zone signal state is generated based on the door zone signal, the control signal whose current state is invalid is converted to valid, a reset signal is generated, and a new control signal and reset signal are output to the safety control board.

[0020] In the disclosed embodiment, the elevator door area is the door opening area of ​​the elevator in the elevator shaft. To ensure the safety of the elevator operation, the elevator can open the car door only in the door area. When an unexpected situation occurs during the operation of the elevator, such as power failure of the elevator, damage to the drive device, etc., the elevator sends a safety control signal with an invalid signal status through the safety control panel. The elevator emergency brakes and the elevator braking position is not in the door area. To ensure the normal operation of the elevator, it is necessary to send a signal to the elevator to return to the leveling floor to drive the elevator to return to the leveling floor.

[0021] In one implementation scenario, the elevator obtains a transmitted door zone signal, and the door zone signal is used to reflect whether the elevator has reached the door zone area. A valid door zone signal indicates that the elevator has reached the door zone area, and an invalid door zone signal indicates that the elevator has not reached the door zone area.

[0022] In a specific implementation scenario, the door area signal of the elevator includes an upper door area signal and a lower door area signal. When the upper door area signal and the lower door area signal are both valid, it indicates that the elevator car as a whole is located in the door area. When the upper door area signal is valid but the lower door area signal is invalid, it indicates that at least the bottom of the elevator car is located in the door area but the top of the car is not located in the door area. When the upper door area signal is invalid but the lower door area signal is valid, it indicates that at least the top of the elevator car is located in the door area but the bottom of the car is not located in the door area. When both the upper door area signal and the lower door area signal are invalid, it indicates that the elevator car as a whole is not located in the door area.

[0023] In one implementation scenario, a control signal consistent with the state of the door zone signal is generated based on the door zone signal. For example, if the current state of the acquired door zone signal is invalid, a control signal corresponding to the current state of the door zone signal is generated.

[0024] In a specific implementation scenario, the acquired door zone signal includes an upper door zone signal and a lower door zone signal, and the control signal includes a first control signal corresponding to the upper door zone signal and a second control signal corresponding to the lower door zone signal. For example, the current state of the acquired upper door zone signal is valid and the lower door zone signal is invalid, and a first control signal and a second control signal are generated, and the current state of the first control signal is valid, and the current state of the second control signal is invalid.

[0025] In one implementation scenario, elevator re-leveling means that after the elevator unexpectedly moves and stops in a non-door area due to emergency braking, a signal is sent to drive the elevator back to the door area so that the car sill and the floor door sill are at the same level.

[0026] In a specific implementation scenario, the elevator will perform a door closing action after emergency braking and before returning to the leveling floor to prevent people in the elevator from accidentally falling into the elevator shaft after opening the car door when the elevator moves unexpectedly.

[0027] In one implementation scenario, after the elevator brakes, the current state of the door zone signal is obtained, and based on the current state of the door zone signal, it is determined whether the elevator moves unexpectedly.

[0028] In a specific implementation scenario, when the current status of at least one of the upper door area signal and the lower door area signal is invalid, for example, the status of both the upper door area signal and the lower door area signal are invalid, or the upper door area signal is valid but the lower door area signal is valid, it is determined that the elevator has moved unexpectedly and the elevator needs to return to leveling to reach the door opening area in the elevator shaft.

[0029] In another specific implementation scenario, when the upper door area signal and the upper door area signal are both valid signals, it is determined that the elevator has not moved unexpectedly, but at this time there may be elastic deformation of the wire rope or other factors causing platform fluctuations. For example, the elevator sill is not on the same horizontal plane as the floor door sill, but the distance between them is not more than 10 centimeters. At this time, the elevator does not perform the door closing operation and runs at the re-leveling speed to reach the leveling position with the car door open.

[0030] In one implementation scenario, the elevator has not reached the designated stop position. At this time, at least one door zone signal is currently invalid, and the current status of the safety control signal transmitted from the safety control board to the main control board is also invalid. The target path for transmitting the safety control signal is shut down to ensure the safety of the elevator operation.

[0031] In a specific implementation scenario, the main control board transmits the door zone signal whose current state is invalid to the safety control board. The safety control board generates a second safety control signal whose signal state is invalid based on the door zone signal whose current state is invalid, and transmits it to the main control board through the target path. The main control board obtains the second safety control signal, and in response to the second safety control signal, sends a signal to drive the elevator to perform a safety control operation, such as a brake signal for driving the elevator to perform an emergency brake, and a door-closing signal for driving the elevator to perform a door-closing action. Through the above method, after obtaining the second safety control signal whose signal state is invalid generated based on the door zone signal whose current state is invalid, the target path for transmitting the safety control signal is turned off, and the safety control operation is performed based on the second safety control signal, the safety performance of the elevator after an unexpected movement can be improved.

[0032] In one implementation scenario, after an elevator moves unexpectedly, a reset request is sent to a reset operation terminal. After the reset operation terminal receives the reset request, the user can choose whether to perform a reset operation based on the current elevator status. The main control board obtains a signal generated and sent by the reset operation terminal when triggered by the user, and determines whether to continue the reset operation based on the signal.

[0033] In a specific implementation scenario, when a user needs to perform routine inspections or device maintenance on an elevator, the elevator position needs to be controlled at a specific height. If the elevator is not in the door area at this time, the elevator does not need to return to the leveling floor. After the user receives the reset request at the reset operation terminal, an operation request signal for not performing the reset operation is sent and transmitted to the main control board. After the main control board obtains the reset operation signal indicating that the reset operation is not performed, it does not generate a reset signal. Through the above method, a reset request is sent to the reset operation terminal, and based on the reset operation signal selected and generated by the user at the reset operation terminal, it is confirmed whether a reset operation and subsequent elevator return to the leveling floor are required, which can improve the practicality of elevator use.

[0034] In another specific implementation scenario, a confirmation signal generated and sent by the reset operation terminal when triggered by the user is obtained, which indicates that the elevator needs to perform a reset operation and a subsequent elevator return to the leveling floor. In response to the confirmation signal triggered by the user selection and the converted new control signal, a reset signal for re-conducting the target path is generated. Through the above method, a reset request is sent to the reset operation terminal, and whether a reset operation and a subsequent elevator return to the leveling floor are required based on the reset operation signal selected and generated by the user at the reset operation terminal, the practicality of elevator use can be improved.

[0035] In a specific implementation scenario, the reset operation terminal is a mechanical button, and the mechanical button is connected to the main control board in communication. Specifically, the mechanical button can also be electrically connected to a display device, a buzzer device, etc. After the reset operation terminal receives the reset request issued by the main control board, the display device lights up and the buzzer device emits a prompt sound, prompting the user to select the reset operation. The user operates the mechanical switch to issue a reset operation signal corresponding to the mechanical switch. For example, two mechanical switches are set, which are respectively used to issue a confirmation signal for performing a reset operation after the user triggers it and to issue a signal for not performing a reset operation after the user triggers it. Through the above method, a reset request is sent to the reset operation terminal, and based on the reset operation signal selected and generated by the user at the reset operation terminal, it is confirmed whether a reset operation is required and the subsequent elevator returns to the leveling floor, which can improve the practicality of elevator use.

[0036] In another specific implementation scenario, the reset operation terminal is an electronic device that is connected to the elevator main control board in communication. After receiving the reset request sent by the main control board, the electronic device can generate an operation page for providing options to the user. For example, a page for the user to select an operation is generated in the form of a pop-up window on the computer terminal that is connected to the elevator main control board in communication. A first option and a second option are generated in the page. The first option is used to send a confirmation signal for performing a reset operation after the user triggers it, and the second option is used to send a signal for not performing a reset operation after the user triggers it. Through the above method, a reset request is sent to the reset operation terminal, and based on the reset operation signal selected and generated by the user at the reset operation terminal, it is confirmed whether a reset operation is required and the subsequent elevator returns to the leveling floor, which can improve the practicality of elevator use.

[0037] Step S20: Acquire a first safety control signal generated by the safety control board in response to the new control signal and the reset signal.

[0038] In one implementation scenario, after the target path for transmitting the safety control signal is shut off, the safety control board cannot turn on the target path based on a new safety control signal with a valid signal status. After the reset signal generated by the main control board based on all valid control signals is transmitted to the safety control board, the shut-off target path can be turned on again. At this time, the control signals obtained by the safety control board are all valid, and the re-output safety control signal is the first safety control signal with a valid signal status. The first control signal is transmitted to the main control board through the target path that is turned on again based on the reset signal. Through the above method, the main control board is unable to obtain the safety control signal with a valid signal status transmitted by the safety control board after the elevator moves unexpectedly and executes the elevator re-leveling, which causes the elevator to execute the re-leveling again and return to one more floor, thereby improving the reliability of the elevator re-leveling control.

[0039] Step S30: Based on the new control signal and the first safety control signal, determine to execute the elevator re-leveling.

[0040] In one implementation scenario, after obtaining a new control signal and a first safety control signal, it is determined that the elevator will re-level. Since the state of the new control signal is valid, the signal state of the first safety control signal is also valid, and the elevator is determined to re-level. Therefore, after the elevator re-levels, both the control signal and the safety control signal are valid, which minimizes the possibility of accidental movement of the elevator. After the elevator re-levels, the main control board cannot obtain the safety control signal with a valid signal state transmitted by the safety control board, causing the elevator to re-level again and return to one more floor, thereby improving the reliability of the elevator re-leveling control.

[0041] In an implementation scenario, the number of floor pulses of an elevator can represent the position of the elevator at the corresponding floor. After determining to execute the elevator re-leveling, the main control board obtains the first floor pulse number of the elevator's current position, the second floor pulse number of the previous floor of the current position, and the third floor pulse number of the next floor of the current position, and determines the target direction of the elevator re-leveling based on the first floor pulse number, the second floor pulse number, and the third floor pulse number. Specifically, the value of the order height is divided by the number of pulses, the resulting value is converted into hexadecimal, and then the number of pulses of the base station layer is added to obtain the corresponding floor pulse number. In the above manner, after determining to execute the elevator re-leveling, the first floor pulse number of the elevator's current position, the second floor pulse number of the previous floor of the current position, and the third floor pulse number of the next floor of the current position are obtained to determine the direction of the elevator re-leveling, thereby improving the reliability of the elevator re-leveling control.

[0042] In a specific implementation scenario, the first difference between the second floor pulse number and the first floor pulse number, and the second difference between the first floor pulse number and the third floor pulse number are obtained. In response to the first difference being less than the second difference, the target direction is determined to be upward, or in response to the first difference being not less than the second difference, the target direction is determined to be downward. For example, if the number of pulses at the current position is 800, the number of pulses at the previous floor is 1000, and the number of pulses at the next floor is 500, then the first difference is 200, and the second difference is 300, then the nearest floor is considered to be the upward floor, and the target direction is determined to be upward. Through the above method, after determining to execute the elevator re-leveling, the first floor pulse number at the current position of the elevator, the second floor pulse number at the previous floor of the current position, and the third floor pulse number at the next floor of the current position are obtained to determine the direction of the elevator re-leveling, thereby improving the practicality of the elevator re-leveling control.

[0043] Through the above method, after the elevator moves unexpectedly, the elevator does not reach the designated parking position. At this time, at least one door zone signal is currently in an invalid state, and the current state of the safety control signal transmitted from the safety control board to the main control board is also invalid. After the safety control signal with the current state being invalid is transmitted, the target path for transmitting the safety control signal is shut off, the main control board obtains the door zone signal at the current moment, generates a control signal consistent with the current state of the door zone signal based on the door zone signal, converts the state of the control signal with the current state being invalid to generate a new control signal effectively, and generates a reset signal. The shut-off target path responds to The reset signal is received and the conduction is closed again. The safety control board generates a first safety control signal with a valid signal state in response to the new control signal. The main control board obtains the first safety control signal transmitted by the reset signal conduction, and after obtaining the first safety control signal and the reset signal, determines to execute the elevator re-leveling. After the elevator re-leveling is executed, since the signal state of the first safety control signal is valid, the main control board determines that the elevator is safe after arriving at the door area according to the first safety control signal and the reset signal, and there is no need to execute the elevator re-leveling again, thereby solving the problem of returning to one more floor after executing the elevator re-leveling and improving the reliability of the elevator re-leveling control.

[0044] See also Figure 2 , Figure 2 2 is a schematic diagram of a framework of an embodiment of an elevator re-leveling control device 20 of the present application. Figure 2As shown, the elevator re-leveling control device 20 includes: an acquisition module 21, a processing module 22 and a control module 23. The acquisition module 21 is used to respond to determining that the elevator car has unexpectedly moved, generate a control signal consistent with the door area signal state based on the door area signal, convert the control signal that is currently invalid to valid, and generate a reset signal, and output a new control signal and a reset signal to the safety control board; the processing module 22 is used to obtain a first safety control signal generated by the safety control board in response to the new control signal and the reset signal; the control module 23 is used to determine to execute the elevator re-leveling based on the new control signal and the first safety control signal.

[0045] In the above scheme, the elevator re-leveling control device 20 obtains the door zone signal at the current moment, and generates a control signal consistent with the door zone signal state based on the door zone signal, converts the state of the control signal which is currently invalid to effectively generate a new control signal, and generates a reset signal, the closed target path is closed and conducted again in response to the reset signal, the safety control board generates a first safety control signal with a valid signal state in response to the new control signal, the main control board obtains the first safety control signal transmitted by the reset signal conduction, and determines to execute the elevator re-leveling after obtaining the first safety control signal and the reset signal, after executing the elevator re-leveling, since the signal state of the first safety control signal is valid, the main control board determines that the elevator is safe after reaching the door zone according to the first safety control signal and the reset signal, and there is no need to execute the elevator re-leveling again, so as to solve the problem of returning one more floor after executing the elevator re-leveling, and improve the reliability of the elevator re-leveling control.

[0046] In some embodiments, the elevator re-leveling control device 20 further includes a determination module for obtaining a current state of a door zone signal after the elevator is braked; and determining whether the elevator moves unexpectedly based on the current state of the door zone signal.

[0047] In some embodiments, the door zone signal includes an upper door zone signal and a lower door zone signal, and the determination module also includes a judgment submodule for determining that the elevator has unexpectedly moved in response to the current status of at least one of the upper door zone signal and the lower door zone signal being invalid; and determining that the elevator has not unexpectedly moved in response to the current status of the upper door zone signal and the lower door zone signal being valid.

[0048] In some embodiments, the elevator re-leveling control device 20 also includes a target passage shutoff module, which is used to shut off the target passage in response to the door zone signal whose current state is invalid before generating a control signal consistent with the state of the door zone signal based on the door zone signal when it is determined that the elevator has moved unexpectedly.

[0049] In some embodiments, the target passage shutoff module also includes a safety control operation submodule, which is used to transmit a door zone signal whose current state is invalid to the safety control board before shutting off the target passage; obtain a second safety control signal generated by the safety control board in response to the door zone signal whose current state is invalid; wherein the signal state of the second safety control signal is invalid; and perform a safety control operation in response to the second safety control signal.

[0050] In some embodiments, the acquisition module 21 also includes a reset signal generation submodule for sending a reset request to the reset operation terminal; acquiring a confirmation signal generated and sent by the reset operation terminal when triggered by the user; and generating a reset signal in response to the confirmation signal and a new control signal.

[0051] In some embodiments, the elevator re-leveling control device 20 also includes a re-leveling direction determination module, which is used to determine the number of first-floor pulses at the current position of the elevator, the number of second-floor pulses on the floor above the current position, and the number of third-floor pulses on the floor below the current position after the elevator re-leveling is executed; based on the first-floor pulse number, the second-floor pulse number, and the third-floor pulse number, determine the target direction of the elevator re-leveling.

[0052] In some embodiments, the re-leveling direction determination module also includes a calculation submodule for obtaining a first difference between the second floor pulse number and the first floor pulse number, and a second difference between the first floor pulse number and the third floor pulse number; in response to the first difference being less than the second difference, determining that the target direction is upward; or, in response to the first difference being not less than the second difference, determining that the target direction is downward.

[0053] See also Figure 3 , Figure 3 Schematic diagram of the framework of an embodiment of the elevator control device 30 of the present application. Figure 3 As shown, the elevator control device 30 includes a safety control board 32 and a main control board 31 coupled to each other, and the main control board 31 includes a memory 311 and a processor 312 coupled to each other, the memory 311 is used to store computer programs, and the processor 312 is used to execute computer programs to implement the steps in the above-mentioned elevator return leveling control method embodiment.

[0054] Specifically, the processor 312 is used to control itself, the memory 311 and the safety control board 32 to implement the steps in any of the above-mentioned elevator return leveling control method embodiments. The processor 312 can also be called a CPU (Central Processing Unit). The processor 312 may be an integrated circuit chip with signal processing capabilities. The processor 312 can also be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field-programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. In addition, the processor 312 can be implemented by multiple integrated circuit chips.

[0055] In this embodiment, the main control board 31 is used to obtain the door zone signal at the current moment, and generate a control signal consistent with the door zone signal state based on the door zone signal, convert the state of the control signal that is currently invalid to effectively generate a new control signal, and generate a reset signal. The closed target path responds to the reset signal and is reclosed and connected. The safety control board responds to the new control signal and generates a first safety control signal with a valid signal state. The main control board obtains the first safety control signal transmitted by the reset signal, and after obtaining the first safety control signal and the reset signal, determines to execute the elevator re-leveling. After executing the elevator re-leveling, since the signal state of the first safety control signal is valid, the main control board determines that the elevator is safe after reaching the door zone according to the first safety control signal and the reset signal, and there is no need to execute the elevator re-leveling again, which solves the problem of returning to one more floor after executing the elevator re-leveling and improves the reliability of the elevator re-leveling control.

[0056] See also Figure 4 , Figure 4 1 is a circuit diagram of an embodiment of the elevator control device 30 of the present application. Figure 4 As shown, the main control board 31 also includes a reset circuit D1 for generating a reset signal RE, the input end of the reset circuit D1 is connected to the control signals FL1 and FL2, and the output end of the reset circuit D1 is electrically connected to the safety control board 32 to conduct the target path T1 between the safety control board 32, and the target path T1 is used to transmit the safety control signal SX1.

[0057] In one implementation scenario, the safety control board 32 includes 4 safety relays, KM1, KM2, KM3, and KM4, wherein KM1_1 is a normally closed contact of KM1, KM1_2, KM1_3, and KM1_4 are normally open contacts of KM1, KM2_1 is a normally closed contact of KM2, KM2_2, KM2_3, and KM2_4 are normally open contacts of KM2, KM3_1 is a normally closed contact of KM3, and KM 3_2, KM3_3, KM3_4 are the normally open contacts of KM3, KM4_1 is the normally closed contact of KM4, KM4_2, KM4_3, KM4_4 are the normally open contacts of KM4, KM1, KM2, KM3, KM4 are the coils of the four relays. When the coils are energized, the relays are closed, the normally open contacts are closed, and the normally closed contacts are disconnected. Conversely, when the coils are de-energized, the relays are disconnected, the normally open contacts are disconnected, and the normally closed contacts are closed. D2 is the door closing circuit. After the elevator moves unexpectedly, at least one of the control signals FL1 and FL2 obtained by the door zone signal is invalid. For example, the control signal FL2 is invalid. Since the door closing circuit D2 has executed the door closing, the KM4 coil is energized, the normally closed contact of KM4_1 is disconnected, and the KM1 coil is de-energized. KM1_3 and KM1_4 are both disconnected. FL2 is invalid, causing the KM3 coil to lose power, and thus KM3_2 is disconnected. Since KM1_4 remains disconnected, the KM3 coil and the KM3_2 normally open contacts are self-locked, causing the KM3 coil to still be unable to be attracted, so that KM3_3 is still disconnected, and the main control board 31 converts the state of the control signal FL2 to valid. The reset circuit D1 generates a reset signal RE and transmits it to the safety control board 32, controlling the KM2 and KM3 coils to be energized, and KM2_3, KM2_4, KM3_3, and KM3_4 to be energized, and the safety control signal SX1 with a valid signal state is transmitted to the main control board 31 through the target path T1, so as to minimize the accidental movement of the elevator and execute the elevator re-leveling. After that, the main control board 31 cannot obtain the safety control signal SX1 with a valid signal state transmitted by the safety control board 32, causing the main control board 31 to believe that the elevator has not reached the door area and executes the re-leveling again, thus causing the problem of returning to one more floor, thereby improving the reliability of the elevator re-leveling control.

[0058] In a specific implementation scenario, the reset circuit D1 is a safety relay, which is composed of several relays and circuits in order to complement each other's abnormal defects and achieve complete relay functions with correctness and low false operation. The lower the error and failure values, the higher the safety factor, thereby improving the safety of the elevator control device 30.

[0059] See also Figure 5 , Figure 5 Schematic diagram of the framework of an embodiment of an elevator system 50 of the present application. Figure 5As shown, the elevator system 50 includes a leveling sensor 51, a traction machine 52, and the elevator control device 30 described in any of the above embodiments, and the leveling sensor 51 and the traction machine 52 are respectively coupled to the elevator control device 30. The leveling sensor 51 is used to obtain a door zone signal and transmit the door zone signal to the elevator control device 30, and the elevator control device 30 sends a driving signal to drive the traction machine 52 to drive the elevator to run.

[0060] In one implementation scenario, the leveling sensor 51 is also called a proximity switch, which is a sensor used to detect whether a metal object exists within its sensing range. Its working principle is to detect the presence of a metal object by using the principle of induced current through a high-frequency electromagnetic field emitted by induction. The leveling sensor 51 is usually composed of an inductor coil, a high-frequency oscillation circuit, a detection circuit, and an output circuit. When a metal object approaches the leveling sensor, the magnetic field will induce the metal object, thereby generating an induced current in the induction coil. This induced current will be detected by the detection circuit and converted into a switch signal, which will be output to the elevator control device 30.

[0061] It should be noted that the installation position of the leveling sensor in the elevator is not limited in this application.

[0062] In one implementation scenario, the traction machine 52 is the power equipment of the elevator, also known as the elevator host. Its function is to convey and transmit power to make the elevator run. It consists of a motor, a brake, a coupling, a reduction box, a traction wheel, a frame, a guide wheel, and an attached handwheel. The guide wheel is generally mounted on the frame or the load-bearing beam under the frame. Some handwheels are fixed on the motor shaft, while others are usually hung on a nearby wall and then put on the motor shaft when in use. The elevator control device 30 outputs a control signal to drive the traction machine 52 to drive the elevator to run.

[0063] See also Figure 6 , Figure 6 The schematic diagram is a framework of an embodiment of a computer-readable storage medium 60 of the present application. The computer-readable storage medium 60 stores program instructions 61 that can be executed by a processor, and the program instructions 61 are used to implement the steps in any of the above-mentioned elevator re-leveling control method embodiments.

[0064] In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0065] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0066] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of 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, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0067] 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, and may be located in one place or distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0068] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0069] 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 technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

Claims

1. An elevator return leveling control method, characterized in that: include: In response to determining that the elevator car has unexpectedly moved, a control signal consistent with the state of the door zone signal is generated based on the door zone signal, the control signal which is currently invalid is converted to valid, a reset signal is generated, and a new control signal and the reset signal are output to the safety control board; wherein a target path between the safety control board and the safety control board is closed in response to the reset signal, and the target path is used to transmit the safety control signal from the safety control board; Acquire a first safety control signal generated by the safety control board in response to the new control signal and the reset signal; wherein the signal state of the first safety control signal is valid; Based on the new control signal and the first safety control signal, it is determined to execute the elevator re-leveling.

2. The elevator re-leveling control method according to claim 1, characterized in that: In response to determining that the elevator car has moved unexpectedly, the method further includes: Acquire the current state of the door zone signal after the elevator brakes; Based on the current state of the door zone signal, it is determined whether the elevator car has moved unexpectedly.

3. The method according to claim 2, characterized in that The door zone signal includes an upper door zone signal and a lower door zone signal, and determining whether the elevator car moves unexpectedly based on the current state of the door zone signal includes at least one of the following: In response to a current state of at least one of the upper door zone signal and the lower door zone signal being invalid, determining that the elevator car has unexpectedly moved; In response to the current states of the upper door zone signal and the lower door zone signal being both valid, it is determined that the elevator car has not moved unexpectedly.

4. The elevator re-leveling control method according to claim 1, characterized in that: In the case where it is determined that the elevator car has unexpectedly moved, before generating a control signal consistent with the state of the door zone signal based on the door zone signal, the method further includes: In response to the gate zone signal being inactive, the target channel is turned off.

5. The method according to claim 4, characterized in that Before shutting off the target pathway, the method further includes: transmitting the door zone signal to the safety control board; Acquire a second safety control signal generated by the safety control board in response to the door zone signal whose current state is invalid; wherein the signal state of the second safety control signal is invalid; In response to the second safety control signal, a safety control operation is performed.

6. The elevator re-leveling control method according to claim 1, characterized in that: The generating of the reset signal comprises: Sending a reset request to the reset operation terminal; Acquiring a confirmation signal generated and sent by the reset operation terminal when triggered by a user; The reset signal is generated in response to the acknowledge signal and the new control signal.

7. The elevator re-leveling control method according to claim 1, characterized in that: After determining to execute the elevator re-leveling, the method further includes: Obtain the first floor pulse number of the elevator's current position, the second floor pulse number of the floor above the current position, and the third floor pulse number of the floor below the current position; Based on the first floor pulse number, the second floor pulse number and the third floor pulse number, a target direction for the elevator to return to the leveling floor is determined.

8. The method according to claim 7, characterized in that The step of determining a target direction for the elevator to return to the leveling floor based on the first floor pulse number, the second floor pulse number, and the third floor pulse number includes: Obtaining a first difference between the pulse number on the second floor and the pulse number on the first floor, and a second difference between the pulse number on the first floor and the pulse number on the third floor; In response to the first difference being smaller than the second difference, the target direction is determined to be upward; or, in response to the first difference being not smaller than the second difference, the target direction is determined to be downward.

9. An elevator control device, characterized in that: It comprises a safety control board and a main control board coupled to each other, the main control board comprises a memory and a processor coupled to each other, the memory is used to store a computer program, and the processor is used to execute the computer program to implement the elevator return leveling control method as described in any one of claims 1 to 8.

10. The elevator control device according to claim 9, characterized in that: The main control board also includes a reset circuit for generating a reset signal, the input end of the reset circuit is connected to the control signal, the output end of the reset circuit is electrically connected to the safety control board to conduct the target path between the safety control board, and the target path is used to transmit the safety control signal.

11. The elevator control device according to claim 10, characterized in that: The reset circuit is a safety relay.

12. An elevator system, characterized in that: The invention comprises a leveling sensor, a traction machine and an elevator control device according to any one of claims 9 to 11, wherein the leveling sensor and the traction machine are respectively coupled to the elevator control device.

13. A computer-readable storage medium, characterized in that: A computer program is stored, and the computer program can be executed by a processor to implement the elevator re-leveling control method according to any one of claims 1 to 8.

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