Speed ​​limiter control circuit, control method, maintenance equipment and storage medium

Abstract

The present invention discloses a speed limiter control circuit, a control method, a maintenance device and a storage medium. In the speed limiter control circuit, a relay, an emergency switch and a coil access port are sequentially arranged between the positive end and the negative end of the power supply. The coil access port is used to access the coil. The drive circuit is connected to the controller and the relay respectively. The feedback end of the emergency switch is connected to the controller. The controller determines whether emergency electric operation is allowed when receiving the closing signal of the emergency switch. If so, it switches to a preset operation mode and outputs a control signal to the drive circuit. The drive circuit outputs a drive signal to drive the relay to close or disconnect, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter. This embodiment connects the coil to the power supply circuit through the coil access port, without the need to use a button, thereby reducing the volume of the maintenance equipment and reducing the cost. In addition, the controller controls the relay to avoid misoperation caused by manual operation.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of elevator control, and in particular to a speed limiter control circuit, a control method, a maintenance device and a storage medium. Background Art

[0002] In the elevator's off-hall maintenance equipment, the traditional design is to control the speed limiter switch to set or reset by electromagnetic force. The control method is mainly to connect the power supply circuit by a button so that the corresponding coil is energized, thereby controlling the corresponding coil to provide electromagnetic force to control the speed limiter switch to set or reset.

[0003] like Figure 1 As shown, coils L1, L2, L3, and L4 are connected to the power supply circuit through buttons K1, K2, K3, and K4 respectively. During operation, the maintenance personnel first press the emergency switch K0, and then press the button of the corresponding coil, thereby connecting the corresponding coil to the power supply circuit. The coil is energized to set or reset the speed limiter.

[0004] In traditional speed limiter control, on the one hand, it is necessary to set buttons equal to the number of coils, and because the buttons need to pass a certain current, their load capacity, creepage distance, etc. have high requirements. The size of the buttons is relatively large, resulting in a large volume of the entire maintenance equipment and a relatively high button cost. On the other hand, the entire process requires manual button operation without considering the elevator's operating status, which is prone to misoperation. Summary of the invention

[0005] The present invention provides a speed limiter control circuit, a control method, a maintenance device and a storage medium to solve the problems that the existing speed limiter control design leads to a large maintenance device with high cost, does not consider the elevator running state, and is prone to misoperation.

[0006] In a first aspect, an embodiment of the present invention provides a speed limiter control circuit, comprising a power supply, a relay, an emergency switch, a controller, a drive circuit, a coil access port, and at least one coil, wherein the power supply comprises a positive power supply terminal and a negative power supply terminal, the relay, the emergency switch, and the coil access port are sequentially arranged between the positive power supply terminal and the negative power supply terminal, the coil access port is used to access the coil, the drive circuit is respectively connected to the controller and the relay, and the feedback end of the emergency switch is connected to the controller;

[0007] The controller is used to:

[0008] Upon receiving a closing signal from the emergency switch, determining whether emergency electric operation is permitted;

[0009] If yes, switch to the preset operation mode and output a control signal to the driving circuit;

[0010] The driving circuit is used for:

[0011] When receiving the control signal, the drive signal is output to drive the relay to close or open, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter.

[0012] Optionally, the coil includes at least one of a car-side speed limiter setting coil, a car-side speed limiter reset coil, a counterweight-side speed limiter setting coil, and a counterweight-side speed limiter reset coil.

[0013] Optionally, the relay is further provided with a state feedback terminal, and the state feedback terminal is connected to the controller.

[0014] Optionally, the controller is also connected to the main control panel of the elevator, and the controller is also used for:

[0015] Acquiring the operation data of the elevator from the main control board;

[0016] Whether emergency electric operation is permitted is determined based on the operating data.

[0017] Optionally, the controller is provided with a button, and the controller is further used for:

[0018] When a preset first key operation is received, the preset operating mode is switched to.

[0019] Optionally, the controller is further configured to:

[0020] After switching to the preset operation mode, when receiving a preset second key operation, a control signal is output to the driving circuit.

[0021] In a second aspect, an embodiment of the present invention provides a speed limiter control method, which is applied to the speed limiter control circuit according to any one of the first aspects, comprising:

[0022] Upon receiving a closing signal from the emergency switch, determining whether emergency electric operation is permitted;

[0023] If yes, switch to the preset operation mode;

[0024] A control signal is output to a drive circuit, and the drive circuit is used to output a drive signal to drive the relay to close or open when receiving the control signal, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter.

[0025] Optionally, the determining whether to allow emergency electric operation includes:

[0026] Acquiring operation data of the elevator from a main control panel of the elevator;

[0027] Whether emergency electric operation is permitted is determined based on the operating data.

[0028] In a third aspect, an embodiment of the present invention provides a maintenance device, the maintenance device comprising the speed limiter control circuit according to any one of the first aspects, wherein the controller in the speed limiter control circuit comprises:

[0029] at least one processor; and

[0030] a memory communicatively connected to the at least one processor; wherein,

[0031] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the speed limiter control method described in any one of the second aspects.

[0032] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the speed limiter control method described in any one of the second aspects when executed.

[0033] The speed limiter control circuit of the embodiment of the present invention includes a power supply, a relay, an emergency switch, a controller, a drive circuit, a coil access port and at least one coil, the power supply includes a positive terminal and a negative terminal of the power supply, the relay, the emergency switch, and the coil access port are sequentially arranged between the positive terminal and the negative terminal of the power supply, the coil access port is used to access the coil, the drive circuit is connected to the controller and the relay respectively, the feedback end of the emergency switch is connected to the controller, the controller is used to determine whether emergency electric operation is allowed when receiving a closing signal of the emergency switch, and if so, switch to a preset operation mode and output a control signal to the drive circuit, the drive circuit is used to output a drive signal to drive the relay to close or open when receiving the control signal, The speed limiter is set or reset by energizing or de-energizing the coil connected to the coil access port. On the one hand, the speed limiter control circuit cancels the button for connecting each coil to the power circuit, and connects the coil to be energized to the power circuit through the coil access port, avoiding the use of buttons, reducing the size of the maintenance equipment, and reducing the cost. On the other hand, after receiving the closing signal of the emergency switch, the controller further determines whether electric operation is allowed. If so, a control signal is generated to the drive circuit to drive the relay to close or open, fully considering whether the operating state of the elevator allows emergency electric operation, and controlling the relay to close or open by the controller, avoiding misoperation caused by manual operation, and ensuring the safe operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a schematic diagram of a speed limiter control circuit in the prior art;

[0036] Figure 2 Schematic diagram of the topological structure of the speed limiter control circuit according to the first embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of a speed limiter control circuit according to Embodiment 1 of the present invention;

[0038] Figure 4 is a flowchart of the steps of the speed limiter control method according to the second embodiment of the present invention;

[0039] Figure 5 It is a structural block diagram of the maintenance equipment of the third embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] Figure 2 FIG. 1 is a schematic diagram of a topological structure of a speed limiter control circuit according to Embodiment 1 of the present invention. Figure 2 As shown, the speed limiter control circuit of the embodiment of the present invention includes a power supply 10 , a relay 20 , an emergency switch 30 , a controller 40 , a drive circuit 50 , a coil access port 60 and at least one coil 70 .

[0043] The power supply 10 may be a DC power supply that outputs voltages of various specifications, an AC-DC circuit that converts city power into DC power, or a rechargeable battery, etc. This embodiment does not limit the power supply 10.

[0044] The emergency switch 30 may be a mechanical button that is manually pressed, the drive circuit 50 may be a circuit that drives the contacts of the relay 20 to close after receiving a control signal. Exemplarily, the drive circuit 50 may be a circuit that energizes the coil in the relay 20 after receiving a high-level signal to close the relay 20. The coil access port 60 may be a port for accessing the coil 70. The coil access port 60 may include a positive port and a negative port, and one coil 70 may be connected at the same time. Exemplarily, the coil access port 60 may be a plug interface that is convenient for plugging in, for example, it may be a female terminal that matches the male terminals on both ends of the coil 70.

[0045] like Figure 2 As shown, the power supply 10 includes a positive power terminal and a negative power terminal, the relay 20, the emergency switch 30, and the coil access port 60 are sequentially arranged between the positive power terminal and the negative power terminal, the coil access port 60 is used to access the coil 70, the drive circuit 50 is respectively connected to the controller 40 and the relay 20, and the feedback end of the emergency switch 30 is connected to the controller 40.

[0046] Among them, the controller 40 is used to determine whether emergency electric operation is allowed when receiving a closing signal from the emergency switch 30. If so, it switches to a preset operation mode and outputs a control signal to the drive circuit 50. The drive circuit 50 is used to output a drive signal to drive the relay 20 to close or disconnect when receiving the control signal, so as to energize or de-energize the coil 70 connected to the coil access port 60, so as to set or reset the speed limiter.

[0047] In actual application, a technician in this field first connects the coil 70 that needs to be energized to the coil access port 60, and then presses the emergency switch 30. The controller 40 receives a signal that the emergency switch 30 is pressed from the feedback end of the emergency switch 30. The controller 40 can obtain the elevator operation data from the main control board of the elevator, and use this to determine whether emergency electric operation is allowed. If so, the controller 40 switches to a preset operation mode and outputs a control signal to the drive circuit 50. After receiving the control signal, the drive circuit 50 outputs a drive signal to the control end of the relay 20 to control the contact of the relay 20 to close, so that the positive end of the power supply, the relay 20, the emergency switch 30, the coil access port 60, the coil 70 and the negative end of the power supply form an electrical circuit, the connected coil is energized, and the speed limiter action corresponding to the coil is set or reset. Exemplarily, the connected coil 70 can be at least one of a car side speed limiter setting coil, a car side speed limiter reset coil, a counterweight side speed limiter setting coil and a counterweight side speed limiter reset coil.

[0048] The speed limiter control circuit of the embodiment of the present invention includes a power supply, a relay, an emergency switch, a controller, a drive circuit, a coil access port and at least one coil, the power supply includes a positive terminal and a negative terminal of the power supply, the relay, the emergency switch, and the coil access port are sequentially arranged between the positive terminal and the negative terminal of the power supply, the coil access port is used to access the coil, the drive circuit is connected to the controller and the relay respectively, the feedback end of the emergency switch is connected to the controller, the controller is used to determine whether emergency electric operation is allowed when receiving a closing signal of the emergency switch, and if so, switch to a preset operation mode and output a control signal to the drive circuit, and the drive circuit is used to output a drive signal when receiving the control signal The driving relay is closed or disconnected to energize or de-energize the coil connected to the coil access port so that the speed limiter is set or reset. On the one hand, the speed limiter control circuit cancels the buttons of each coil, and connects the coil that needs to be energized to the power supply circuit through the coil access port, avoiding the use of buttons, reducing the size of the maintenance equipment, and reducing the cost. On the other hand, after receiving the closing signal of the emergency switch, the controller further determines whether electric operation is allowed. If so, a control signal is generated to the driving circuit to drive the relay to close or disconnect, fully considering whether the operating state of the elevator allows electric operation, and automatically controlling the relay to close or disconnect, avoiding misoperation caused by manual operation.

[0049] In an optional embodiment, the relay 20 is also provided with a state feedback terminal, which is connected to the controller 40 so that the controller 40 can obtain whether the contacts of the relay 20 are in an open state or an attracted state, so that the controller 40 can better output the control signal to the drive circuit 50, and at the same time, the accuracy of the action of the relay 20 is ensured by the signal fed back by the state feedback terminal.

[0050] In order to more clearly illustrate the working principle of the speed limiter control circuit of the present invention, the following Figure 3 The control process of the speed limiter is described as follows:

[0051] like Figure 3As shown, the power supply includes a positive terminal (+) and a negative terminal (-), the coil access port includes a positive port ZX1 and a negative port ZX2, exemplarily, the positive port ZX1 and the negative port ZX2 can be female ports, the coil includes a car side speed limiter setting coil L1, a car side speed limiter reset coil L2, a counterweight side speed limiter setting coil L3 and a counterweight side speed limiter reset coil L4, wherein, when the car side speed limiter setting coil L1 is energized, the car side speed limiter is set, and the car side speed limiter is actuated, when the car side speed limiter reset coil L2 is energized, the car side speed limiter is reset, and the car side speed limiter does not actuate, similarly, when the counterweight side speed limiter setting coil L3 is energized, the counterweight side speed limiter is set, and the counterweight side speed limiter is actuated, when the counterweight side speed limiter reset coil L4 is energized, the counterweight side speed limiter is reset, and the counterweight side speed limiter does not actuate. Both ends of each coil of the car side speed limiter setting coil L1, the car side speed limiter reset coil L2, the counterweight side speed limiter setting coil L3 and the counterweight side speed limiter reset coil L4 are provided with male plugs, which can be connected to the power supply circuit through the male plugs.

[0052] like Figure 3 As shown, the emergency switch K0 is arranged between the positive port ZX1 and the relay SG. Taking the setting of the car side speed limiter as an example, the maintenance personnel first connect the first end Z11 and the second end Z12 of the car side speed limiter setting coil L1 to the positive port ZX1 and the negative port ZX2 respectively, and then press the emergency switch K0. After the controller 40 receives the signal output from the feedback end of the emergency switch K0, it determines whether emergency electric operation is allowed. If so, it enters the preset operation mode and outputs a control signal to the drive circuit 50. The drive circuit 50 drives the relay SG to close, so that the car side speed limiter setting coil L1 is energized, and the car side speed limiter setting is actuated.

[0053] In an optional embodiment, the controller 40 is also connected to the main control board of the elevator, and the controller 40 is also used to obtain the operation data of the elevator from the main control board, and determine whether emergency electric operation is allowed according to the operation data. Exemplarily, the operation data of the elevator can be an elevator operation switch signal, such as a signal output by a safety circuit. If the safety circuit is turned on, it means that there is no situation that affects safe operation, and it is determined that emergency electric operation can be allowed. If the safety circuit is disconnected, it means that there is a situation that affects safe operation, and emergency electric operation is prohibited. Of course, the operation data of the elevator can also be other data that can reflect whether the safe operation of the elevator is affected. In this embodiment, the controller 40 can communicate with the main control board of the elevator to obtain the operation data of the elevator to determine whether electric operation is allowed, taking into account the influence of the operation data of the elevator on the control speed limiter, and ensuring the safe operation of the elevator.

[0054] In an optional embodiment, the preset operating mode of the controller 40 can be a mode of controlling the relay 20 to control the speed limiter. In one example, a button is provided on the controller 40, which can be a single button or a combination of multiple buttons. The maintenance personnel can operate the button on the controller 40 to switch the controller 40 to the preset operating mode, that is, the controller 40 switches to the preset operating mode upon receiving the preset first button operation. It should be noted that the button for switching to the preset operating mode is effective when the emergency switch 30 is pressed and the controller 40 determines that emergency electric operation is allowed.

[0055] Exemplarily, the controller 40 is provided with a button MODE, a button INC and a button SET. When it is necessary to switch to the preset operating mode A, the button MODE can be pressed first to enter the operating mode selection state, and then the operating mode A can be selected by operating the button INC. After selecting the operating mode A, the controller 40 can be switched to the operating mode A by pressing the button SET. In the operating mode A, the controller 40 can control the relay 20.

[0056] In an optional embodiment, the controller 40 is further configured to, after switching to the preset operation mode, output a control signal to the drive circuit 50 upon receiving a preset second key operation. For example, after the controller 40 is switched to the operation mode A by pressing the key SET, pressing the key INC again may cause the controller 40 to output a control signal to the drive circuit 50 to determine that the contacts of the relay 20 are closed.

[0057] It should be noted that the buttons on the controller 40 are the original buttons on the maintenance equipment. The controller 40 can be provided with a display screen to display various operating modes. The buttons can be mechanical buttons or virtual buttons displayed on the display screen.

[0058] This embodiment uses a button to trigger the switching of the operating mode and control the relay to close, so that the maintenance personnel can switch to the preset operating mode by pressing the button, and then trigger the controller to control the relay to close. Figure 1 The existing design directly energizes the coil through the emergency switch, which makes the speed limiter control more standardized and ensures the safety of operation.

[0059] Embodiment 2

[0060] Figure 4 This is a flow chart of a speed limiter control method provided in Embodiment 2 of the present invention. This embodiment is applicable to the speed limiter control circuit of Embodiment 1. The method can be implemented in the form of hardware and / or software. The speed limiter control method can be configured in a maintenance device, such as Figure 4 As shown, the speed limiter control method includes:

[0061] S401. Upon receiving a closing signal from the emergency switch, determine whether emergency electric operation is allowed.

[0062] like Figure 2 As shown, in the speed limiter control circuit, the feedback end of the emergency switch 30 is connected to the controller 40, so that the controller 40 can receive a signal of closing or opening the emergency switch 30 from the feedback end. When the closing signal of the emergency switch 30 is received, it indicates that the maintenance personnel want to set or reset the speed limiter, and can determine whether to allow emergency electric operation of the elevator.

[0063] Specifically, the controller 40 of this embodiment can also be connected to the main control board of the elevator to obtain the operating data of the elevator from the main control board of the elevator, and determine whether emergency electric operation is allowed based on the operating data. If so, execute S402; if not, generate a reminder message prohibiting emergency electric operation to remind maintenance personnel.

[0064] In one example, the operation data of the elevator can be, for example, an elevator operation switch signal, such as a signal output by a safety circuit. If the safety circuit is turned on, it means that there is no situation that affects safe operation, and it is determined that emergency electric operation can be allowed. If the safety circuit is disconnected, it means that there is a situation that affects safe operation, and emergency electric operation is prohibited. Of course, the operation data of the elevator can also be other data that can reflect whether safe operation is affected. The controller 40 of this embodiment can communicate with the main control board of the elevator to obtain the operation data of the elevator to determine whether emergency electric operation is allowed, taking into account the influence of the operation data of the elevator on the control speed limiter, and ensuring the safe operation of the elevator.

[0065] S402, switch to the preset operation mode.

[0066] The preset operation mode may be a mode for controlling the relay 20 to control the speed limiter. In one example, a button is provided on the controller 40, which may be a single button or a combination of multiple buttons. The maintenance personnel may operate the button on the controller 40 to switch the controller 40 to the preset operation mode, that is, the controller 40 switches to the preset operation mode when receiving the preset first button operation. It should be noted that the button for switching to the preset operation mode is effective when the emergency switch 30 is pressed and the controller 40 determines that the emergency electric operation is allowed. Of course, the controller 40 may also switch to the preset operation mode, for example, the controller 40 automatically enters the preset operation mode when receiving the closing signal of the emergency switch 30 and determining that the emergency electric operation is allowed.

[0067] Exemplarily, the controller 40 is provided with a button MODE, a button INC and a button SET. When it is necessary to switch to the preset operating mode A, the button MODE can be pressed first to enter the operating mode selection state, and then the operating mode A can be selected by operating the button INC. After selecting the operating mode A, the controller 40 can be switched to the operating mode A by pressing the button SET. In the operating mode A, the controller 40 can control the relay 20.

[0068] S403, outputting a control signal to a drive circuit, wherein the drive circuit is used to output a drive signal to drive a relay to close or open when receiving the control signal, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter.

[0069] In an optional embodiment, after switching to the preset operating mode, when a preset second button operation is received, a control signal is output to the drive circuit. For example, after the controller 40 is switched to operating mode A by pressing the button SET, pressing the button INC again can cause the controller 40 to output a control signal to the drive circuit 50 to determine that the contacts of the relay 20 are closed.

[0070] It should be noted that, for the method embodiment, since its principle is basically similar to that of the speed limiter control circuit of the first embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0071] The speed limiter control method of this embodiment is applied to the speed limiter control circuit of the first embodiment. On the one hand, the speed limiter control circuit cancels the buttons of each coil, and connects the coil that needs to be energized to the power supply circuit through the coil access port, avoiding the use of buttons, reducing the volume of the maintenance equipment, and reducing the cost. On the other hand, after receiving the closing signal of the emergency switch, the controller further determines whether electric operation is allowed. If so, a control signal is generated to the drive circuit to drive the relay to close or open, fully considering whether the operating state of the elevator allows emergency electric operation, and automatically controlling the relay to close or open, avoiding erroneous operation caused by manual operation.

[0072] Embodiment 3

[0073] Figure 5The schematic diagram of the structure of the maintenance equipment of the embodiment of the present invention is shown. The controller of the maintenance equipment includes at least one processor 61, and a memory connected to the at least one processor 61 in communication, such as a read-only memory (ROM) 62, a random access memory (RAM) 63, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 61 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 62 or the computer program loaded from the storage unit 68 to the random access memory (RAM) 63. Various programs and data required for the operation of the maintenance equipment can also be stored in the RAM 63. The processor 61, the ROM 62 and the RAM 63 are connected to each other via a bus 64. The input / output (I / O) interface 65 is also connected to the bus 64.

[0074] A number of components in the maintenance device are connected to the I / O interface 65, including: an input unit 66, such as various data input interfaces, etc.; an output unit 67, such as various types of displays, speakers, etc.; a storage unit 68, such as a disk, an optical disk, etc.; and a communication unit 69, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 69 allows the maintenance device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0075] The processor 61 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 61 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The processor 61 executes the various methods and processes described above, such as the speed limiter control method.

[0076] In some embodiments, the speed limiter control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 68. In some embodiments, part or all of the computer program can be loaded and / or installed on the maintenance equipment via ROM 62 and / or communication unit 69. When the computer program is loaded into RAM 63 and executed by processor 61, one or more steps of the speed limiter control method described above can be performed. Alternatively, in other embodiments, processor 61 can be configured to perform the speed limiter control method by any other appropriate means (e.g., by means of firmware).

[0077] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0078] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0079] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0080] To provide interaction with a user, the systems and techniques described herein may be implemented on an inspection device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user. Other types of devices may also be used to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0081] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0082] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0083] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A speed limiter control circuit, characterized in that: It includes a power supply, a relay, an emergency switch, a controller, a drive circuit, a coil access port and at least one coil, wherein the power supply includes a positive power supply terminal and a negative power supply terminal, the relay, the emergency switch and the coil access port are sequentially arranged between the positive power supply terminal and the negative power supply terminal, the coil access port is used to access the coil, the drive circuit is connected to the controller and the relay respectively, and the feedback end of the emergency switch is connected to the controller; The controller is used to: Upon receiving a closing signal from the emergency switch, determining whether emergency electric operation is permitted; If yes, switch to the preset operation mode and output a control signal to the driving circuit; The driving circuit is used for: When receiving the control signal, the drive signal is output to drive the relay to close or open, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter.

2. The speed limiter control circuit according to claim 1, characterized in that: The coil includes at least one of a car side speed limiter setting coil, a car side speed limiter reset coil, a counterweight side speed limiter setting coil, and a counterweight side speed limiter reset coil.

3. The speed limiter control circuit according to claim 1, characterized in that: The relay is also provided with a state feedback terminal, and the state feedback terminal is connected to the controller.

4. The speed limiter control circuit according to claim 1, characterized in that: The controller is also connected to the main control panel of the elevator, and the controller is also used for: Acquiring the operation data of the elevator from the main control board; Whether emergency electric operation is permitted is determined based on the operating data.

5. The speed limiter control circuit according to any one of claims 1 to 4, characterized in that: The controller is provided with a button, and the controller is also used for: When a preset first key operation is received, the preset operating mode is switched to.

6. The speed limiter control circuit according to claim 5, characterized in that: The controller is also used for: After switching to the preset operation mode, when receiving a preset second key operation, a control signal is output to the driving circuit.

7. A speed limiter control method, characterized in that: A speed limiter control circuit as claimed in any one of claims 1 to 6, comprising: Upon receiving a closing signal from the emergency switch, determining whether emergency electric operation is permitted; If yes, switch to the preset operation mode; A control signal is output to a drive circuit, and the drive circuit is used to output a drive signal to drive the relay to close or open when receiving the control signal, so as to energize or de-energize the coil connected to the coil access port, so as to set or reset the speed limiter.

8. The speed limiter control method according to claim 7, characterized in that: The determination of whether emergency electric operation is permitted includes: Acquiring operation data of the elevator from a main control panel of the elevator; Whether emergency electric operation is permitted is determined based on the operating data.

9. A maintenance equipment, characterized in that: The maintenance equipment comprises a speed limiter control circuit according to any one of claims 1 to 6, wherein a controller in the speed limiter control circuit comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the speed limiter control method according to any one of claims 7 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the speed limiter control method according to any one of claims 7 to 8 when executed.

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