CN115504348A

CN115504348A - Speed limiter control circuit, control method, maintenance equipment and storage medium

Info

Publication number: CN115504348A
Application number: CN202211105922.XA
Authority: CN
Inventors: 陈晓东; 严迪谊; 孟令东; 黄立明
Original assignee: Hitachi Building Technology Guangzhou Co Ltd
Current assignee: Hitachi Building Technology Guangzhou Co Ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-12-23

Abstract

The invention discloses a speed limiter control circuit, a control method, maintenance equipment and a storage medium, wherein a relay, an emergency switch and a coil access port of the speed limiter control circuit are sequentially arranged between a positive end and a negative end of a power supply; the controller judges whether the emergency electric operation is allowed or not when receiving a closing signal of the emergency switch; if so, switching to a preset operation mode and outputting a control signal to the drive circuit; the driving circuit outputs a driving signal to drive the relay to be closed or opened so as to electrify or cut off the coil connected to the coil access port, and the speed limiter is set or reset. In this embodiment passes through the coil access port and inserts the coil to power supply circuit, need not to use the button, reduced the volume of overhauing equipment, the cost is reduced to through controller control relay, avoided the maloperation that manual operation appears.

Description

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

Technical Field

The embodiment of the invention relates to the technical field of elevator control, in particular to a speed limiter control circuit, a control method, maintenance equipment and a storage medium.

Background

In the hall outside of elevator overhauls equipment, traditional design is through electromagnetic force mode control overspeed governor switch setting or vice reseing, and control mode mainly switches on power supply loop through the button for corresponding coil gets electric, thereby controls the corresponding coil and provides the electromagnetic force, controls overspeed governor switch setting or resets.

As shown in fig. 1, coils L1, L2, L3 and L4 are respectively connected to a power supply loop through buttons K1, K2, K3 and K4, and a maintenance worker firstly presses an emergency switch K0 and then presses a button of a corresponding coil during operation, so that the corresponding coil is connected to the power supply loop, and the coil is electrified to set or reset the speed limiter.

In traditional overspeed governor control, on the one hand, need set up the button that equals with coil quantity, and the button is because of needs pass through certain electric current, and its load capacity, creepage distance etc. have higher requirements, and the size of button is great relatively, leads to whole maintenance equipment bulky, and the button cost is higher relatively, and on the other hand, whole process needs the manual work to pass through button operation, does not consider the elevator running state, easily takes place the maloperation.

Disclosure of Invention

The invention provides a speed limiter control circuit, a control method, maintenance equipment and a storage medium, and aims to solve the problems that the size of the maintenance equipment is large, the cost is high, the running state of an elevator is not considered and misoperation is easy to occur due to the existing speed limiter control design.

In a first aspect, an embodiment of the present invention provides a speed limiter control circuit, including a power supply, a relay, an emergency switch, a controller, a driving circuit, a coil access port, and at least one coil, where the power supply includes a positive terminal of the power supply and a negative terminal of the power supply, the relay, the emergency switch, and the coil access port are sequentially disposed between the positive terminal of the power supply and the negative terminal of the power supply, the coil access port is used to access the coil, the driving circuit is connected to the controller and the relay, respectively, and a feedback terminal of the emergency switch is connected to the controller;

the controller is configured to:

when a closing signal of the emergency switch is received, judging whether emergency electric operation is allowed or not;

if yes, switching to a preset operation mode and outputting a control signal to the driving circuit;

the drive circuit is configured to:

and when a control signal is received, a driving signal is output to drive the relay to be closed or opened so as to electrify or cut off the coil accessed to the coil access port, so that the speed limiter is set or reset.

Optionally, the coils include at least one of a car-side governor set coil, a car-side governor reset coil, a counterweight-side governor set coil, and a counterweight-side governor reset coil.

Optionally, the relay is further provided with a state feedback end, and the state feedback end is connected with the controller.

Optionally, the controller is further connected to a main control board of the elevator, and the controller is further configured to:

obtaining operation data of the elevator from the main control board;

and judging whether to allow the emergency electric operation or not according to the operation data.

Optionally, the controller is provided with a key, and the controller is further configured to:

and when receiving a preset first key operation, switching to a preset operation mode.

Optionally, the controller is further configured to:

and after the operation mode is switched to the preset operation mode, when a preset second key operation is received, outputting a control signal to the driving circuit.

In a second aspect, an embodiment of the present invention provides a speed limiter control method applied to the speed limiter control circuit of any one of the first aspects, including:

if so, switching to a preset operation mode;

and outputting a control signal to a driving circuit, wherein the driving circuit is used for outputting the driving signal to drive a relay to be closed or opened when receiving the control signal so as to electrify or cut off a coil accessed to the coil access port, so that the speed limiter is set or reset.

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

obtaining operation data of an elevator from a main control board of the elevator;

and judging whether the emergency electric operation is allowed or not according to the operation data.

In a third aspect, an embodiment of the present invention provides a service equipment, where the service equipment includes the speed limiter control circuit described in any one of the first aspects, where the speed limiter control circuit includes:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the governor control method of any of the second aspects.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to, when executed by a processor, implement the speed limiter control method according to any one of the second aspects.

The speed limiter control circuit comprises 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 power supply positive terminal and a power supply negative terminal, the relay, the emergency switch and the coil access port are sequentially arranged between the power supply positive terminal and the power supply negative terminal, the coil access port is used for accessing the coil, the drive circuit is respectively connected with the controller and the relay, a feedback terminal of the emergency switch is connected with the controller, the controller is used for judging whether emergency electric operation is allowed or not when receiving a closing signal of the emergency switch, if so, switching to a preset operation mode and outputting a control signal to the drive circuit, the drive circuit is used for outputting the drive signal to drive the relay to be closed or opened when receiving the control signal so as to electrify or cut off the coil accessed to enable the speed limiter to be set or reset, on the one hand, the speed limiter control circuit cancels a button for accessing each coil into the power supply circuit after receiving the closing signal of the emergency switch, connects the coil to the coil required to be electrified into the power supply circuit through the coil access port, avoids using the button, reduces the volume of maintenance equipment, reduces the cost, on the other hand, judges whether the electric operation is allowed to be operated, and controls the elevator to be operated by mistake, and the elevator.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a prior art governor control circuit;

fig. 2 is a schematic diagram of a topology of a speed limiter control circuit according to a first embodiment of the present invention;

fig. 3 is a schematic diagram of a speed limiter control circuit according to a first embodiment of the present invention;

fig. 4 is a flowchart of the steps of a speed limiter control method according to a second embodiment of the present invention;

fig. 5 is a block diagram of a service apparatus according to a third embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Fig. 2 is a schematic diagram of a topology of a speed limiter control circuit according to an embodiment of the present invention, and as shown in fig. 2, the speed limiter control circuit according to the embodiment of the present invention includes a power supply 10, a relay 20, an emergency switch 30, a controller 40, a driving circuit 50, a coil access port 60, and at least one coil 70.

The power supply 10 may be a direct current power supply that outputs various specification voltages, the power supply 10 may be an AC-DC circuit that converts commercial power into direct current, or may be a rechargeable battery, and the present embodiment does not limit the power supply 10.

The emergency switch 30 may be a mechanical button that is manually pressed, the driving circuit 50 may be a circuit that drives the contacts of the relay 20 to be closed after receiving a control signal, the driving circuit 50 may be a circuit that energizes a coil in the relay 20 to close the relay 20 after receiving a high level signal, the coil access port 60 may be a port to which the coil 70 is accessed, the coil access port 60 may include a positive port and a negative port, and one coil 70 may be accessed at the same time, and the coil access port 60 may be an insertion port to facilitate insertion, for example, a female terminal that is matched with a male terminal on both ends of the coil 70.

As shown in fig. 2, 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 disposed between the positive power terminal and the negative power terminal, the coil access port 60 is used for accessing the coil 70, the driving circuit 50 is respectively connected to the controller 40 and the relay 20, and the feedback terminal of the emergency switch 30 is connected to the controller 40.

The controller 40 is configured to determine whether emergency electric operation is allowed or not when receiving a closing signal of the emergency switch 30, and if so, switch to a preset operation mode and output a control signal to the driving circuit 50, and the driving circuit 50 is configured to output a driving signal to drive the relay 20 to be turned on or off when receiving the control signal, so as to power on or off the coil 70 connected to the coil access port 60, so as to set or reset the speed governor.

In practical application, a person skilled in the art first accesses a coil 70 to be powered into a coil access port 60, then presses the emergency switch 30, the controller 40 receives a signal that the emergency switch 30 is pressed from a feedback end of the emergency switch 30, the controller 40 can obtain elevator operation data from a main control panel of an elevator, and accordingly determines whether emergency electric operation is allowed, if so, the controller 40 switches to a preset operation mode and outputs a control signal to the driving circuit 50, the driving circuit 50 outputs a driving signal to a control end of the relay 20 to control contact attraction of the relay 20 after receiving the control signal, so that an electric loop is formed by a positive power supply end, the relay 20, the emergency switch 30, the coil access port 60, the coil 70 and a negative power supply end, and the accessed coil is powered, and a speed limiter corresponding to the coil is set or reset.

The speed limiter control circuit comprises 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 power supply positive end and a power supply negative end, the relay, the emergency switch and the coil access port are sequentially arranged between the power supply positive end and the power supply negative end, the coil access port is used for accessing the coil, the drive circuit is respectively connected with the controller and the relay, a feedback end of the emergency switch is connected with the controller, the controller is used for judging whether emergency electric operation is allowed or not when receiving a closing signal of the emergency switch, if so, switching to a preset operation mode and outputting a control signal to the drive circuit, the drive circuit is used for outputting the drive signal to drive the relay to be closed or opened when receiving the control signal so as to electrify or cut off the coil accessed to enable the speed limiter to be set or reset, on the one hand, the speed limiter control circuit cancels buttons of each coil, inserts the coil needing electrifying into the power supply loop through the coil access port, avoids using the buttons, reduces the volume of maintenance equipment, reduces the cost, and on the other hand, the controller further judges whether electric operation is allowed to be operated so as to avoid the relay to be closed or cut off, and controls the electric operation of the relay to avoid the elevator.

In an optional embodiment, the relay 20 is further provided with a state feedback terminal, and the state feedback terminal is connected to the controller 40, so that the controller 40 obtains whether the contact of the relay 20 is in the separation state or the pull-in state, so that the controller 40 can better output a control signal to the driving circuit 50, and the accuracy of the action of the relay 20 is ensured through the signal fed back by the state feedback terminal.

In order to more clearly illustrate the working principle of the speed limiter control circuit of the present invention, the control process of the speed limiter is described below with reference to fig. 3:

as shown in fig. 3, the power supply includes a positive power terminal (+) and a negative power terminal (-), the coil access port includes a positive terminal ZX1 and a negative terminal ZX2, and exemplarily, the positive terminal ZX1 and the negative terminal ZX2 may be female terminals, the coil includes a car-side speed limiter setting coil L1, a car-side speed limiter resetting coil L2, a counterweight-side speed limiter setting coil L3 and a counterweight-side speed limiter resetting coil L4, wherein when the car-side speed limiter setting coil L1 is powered, the car-side speed limiter is set, the car-side speed limiter is operated, when the car-side speed limiter resetting coil L2 is powered, the car-side speed limiter is reset, the car-side speed limiter is not operated, and in a similar way, when the counterweight-side speed limiter setting coil L3 is powered, the counterweight-side speed limiter is set, the counterweight-side speed limiter is operated, when the counterweight-side speed limiter resetting coil L4 is powered, the counterweight-side speed limiter is reset, and the counterweight-side speed limiter is not operated. Car side speed limiter set coil L1, car side speed limiter reset coil L2, to heavy side speed limiter set coil L3 and all be provided with public first plug to the both ends of each coil in heavy side speed limiter reset coil L4, can be connected to in the power supply circuit through public first plug.

As shown in fig. 3, the emergency switch K0 is disposed between the positive terminal ZX1 and the relay SG, and the car-side speed limiter is set 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 terminal ZX1 and the negative terminal ZX2, respectively, and then press the emergency switch K0, after receiving the signal output by the feedback end of the emergency switch K0, the controller 40 determines whether to allow the emergency electric operation, if so, enters the preset operation mode, and outputs a control signal to the driving circuit 50, and the driving 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 sets.

In an alternative embodiment, the controller 40 is further connected to a main control board of the elevator, and the controller 40 is further configured to obtain operation data of the elevator from the main control board and determine whether to allow the emergency electric operation according to the operation data. The operation data of the elevator can be an elevator operation switch signal, for example, a signal output by a safety circuit, if the safety circuit is on, indicating that no situation affecting the safety operation occurs, the emergency electric operation is judged to be allowed, if the safety circuit is off, indicating that the situation affecting the safety operation occurs, and the emergency electric operation is forbidden, of course, the operation data of the elevator can also be other data capable of reflecting whether the elevator safety operation is affected. The controller 40 in this embodiment can communicate with a main control panel of the elevator to acquire operation data of the elevator to determine whether to allow electric operation, and the controller takes the influence of the operation data of the elevator on controlling the speed limiter into consideration, thereby ensuring safe operation of the elevator.

In an alternative embodiment, the preset operation mode of the controller 40 may be a mode for controlling the relay 20 to control the speed limiter, in an example, a button is provided on the controller 40, the button may be a single button or a combination of multiple buttons, and a maintenance worker 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 a preset first button operation, it should be noted that the button switched 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.

Illustratively, the controller 40 is provided with a key MODE, a key INC and a key SET, when it is required to switch to the preset operation MODE a, the key MODE may be pressed to enter the operation MODE selection state, and then the operation MODE a is selected through the operation of the key INC, after the operation MODE a is selected, the controller 40 is switched to the operation MODE a through pressing the key SET, and the controller 40 may control the relay 20 in the operation MODE a.

In an alternative embodiment, the controller 40 is further configured to output a control signal to the driving circuit 50 when receiving a preset second key operation after switching to the preset operation mode. For example, after the controller 40 is switched to the operation mode a by the key SET, as described above, pressing the key INC again may cause the controller 40 to output a control signal to the driving circuit 50 to determine the contact pull-in of the relay 20.

It should be noted that the keys on the controller 40 are original keys on the maintenance equipment, the controller 40 may be provided with a display screen to display various operation modes, and the keys may be mechanical cases or virtual keys displayed on the display screen.

This embodiment triggers switching and the actuation of control relay of running mode through the button for after maintenance personal triggered the switching to predetermineeing the running mode through the button, rethread button trigger control ware control relay is closed, directly comes to the coil circular telegram through emergency switch for current design in FIG 1, and is more normal to overspeed governor control, has guaranteed operation safety.

Example two

Fig. 4 is a flowchart of a speed limiter control method according to a second embodiment of the present invention, which may be applied to a speed limiter control circuit according to the first embodiment, where the method may be implemented in a form of hardware and/or software, and the speed limiter control method may be configured in a service device, as shown in fig. 4, where the speed limiter control method includes:

and S401, when the closing signal of the emergency switch is received, judging whether emergency electric operation is allowed or not.

As shown in fig. 2, in the speed governor control circuit, a feedback terminal of the emergency switch 30 is connected to the controller 40, so that the controller 40 can receive a signal for turning on or off the emergency switch 30 from the feedback terminal, and when receiving the turning-on signal of the emergency switch 30, it indicates that a serviceman sets or resets the speed governor, and can determine whether or not the emergency electric operation of the elevator is permitted.

Specifically, the controller 40 of this embodiment may be further in communication connection with a main control board of the elevator, so as to obtain operation data of the elevator from the main control board of the elevator, determine whether to allow the emergency electric operation according to the operation data, if so, execute S402, and if not, generate a warning message to prohibit the emergency electric operation to warn maintenance personnel.

In one example, the operation data of the elevator may be an elevator operation switch signal, for example, a signal output by a safety circuit, if the safety circuit is on, indicating that no situation affecting the safety operation occurs, the emergency electric operation may be determined to be allowed, and if the safety circuit is off, indicating that the situation affecting the safety operation occurs, the emergency electric operation is prohibited, of course, the operation data of the elevator may also be other data capable of reflecting whether the safety operation is affected. The controller 40 of the embodiment can communicate with the main control board of the elevator to acquire the operation data of the elevator to judge whether emergency electric operation is allowed or not, the influence of the operation data of the elevator on the control speed limiter is considered, and the safe operation of the elevator is ensured.

S402, switching to a preset operation mode.

In an example, the controller 40 is provided with a key, which may be a single key or a combination of multiple keys, and a serviceman may operate the key 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 a preset first key operation, it should be noted that the key switched to the preset operation mode is pressed on the emergency switch 30 and the controller 40 determines that the emergency electric operation condition is allowed to be effective. 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.

Illustratively, the controller 40 is provided with a key MODE, a key INC and a key SET, when it is required to switch to the preset operation MODE a, the key MODE may be pressed to enter an operation MODE selection state, and then the operation MODE a is selected through the operation of the key INC, after the operation MODE a is selected, the controller 40 is switched to the operation MODE a through pressing the key SET, and the controller 40 may control the relay 20 in the operation MODE a.

And S403, outputting a control signal to a driving circuit, wherein the driving circuit is used for outputting the driving signal to drive a relay to be closed or opened when the control signal is received so as to electrify or cut off a coil connected to the coil access port, and thus the speed limiter is set or reset.

In an alternative embodiment, after switching to the preset operation mode, when receiving a preset second key operation, outputting a control signal to the driving circuit, for example, after the controller 40 is switched to the operation mode a by the key SET, pressing the key INC again may cause the controller 40 to output a control signal to the driving circuit 50 to determine the contact attraction of the relay 20.

It should be noted that, for the method embodiment, since the principle is basically similar to that of the speed limiter control circuit of the first embodiment, the description is relatively simple, and for the relevant points, referring to the partial description of the method embodiment, it is only possible to refer to the description of the method embodiment

The speed limiter control method is applied to the speed limiter control circuit of the first embodiment, on one hand, buttons of all coils are omitted, the coils needing to be electrified are connected into a power supply loop through coil access ports, the use of the buttons is avoided, the size of maintenance equipment is reduced, and the cost is reduced, on the other hand, a controller further judges whether electric operation is allowed or not after receiving a closing signal of an emergency switch, if yes, a control signal is generated to a driving circuit to drive a relay to be closed or opened, whether the emergency electric operation is allowed or not is fully considered in the operation state of an elevator, the relay is automatically controlled to be closed or opened, and misoperation caused by manual operation is avoided.

EXAMPLE III

Fig. 5 shows a schematic structural view of the service apparatus of the embodiment of the present invention. The controller of the service device includes at least one processor 61, and a memory communicatively connected to the at least one processor 61, such as a Read Only Memory (ROM) 62, a Random Access Memory (RAM) 63, etc., wherein the memory stores computer programs executable by the at least one processor, and the processor 61 may perform various suitable actions and processes according to the computer programs stored in the Read Only Memory (ROM) 62 or the computer programs loaded from the storage unit 68 into the Random Access Memory (RAM) 63. In the RAM63, various programs and data necessary for the operation of the maintenance equipment can also be stored. The processor 61, the ROM 62, and the RAM63 are connected to each other by a bus 64. An input/output (I/O) interface 65 is also connected to bus 64.

Various components in the service equipment are connected to the I/O interface 65, including: an input unit 66 such as various data input interfaces and the like; an output unit 67 such as various types of displays, speakers, and the like; a storage unit 68 such as a magnetic disk, optical disk, or the like; and a communication unit 69 such as a network card, modem, wireless communication transceiver, etc. The communication unit 69 allows the service device to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.

Processor 61 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of 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, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, and so forth. The processor 61 performs the various methods and processes described above, such as the governor control method.

In some embodiments, the rate limiter control method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 68. In some embodiments, part or all of the computer program may be loaded and/or installed onto the service device via the ROM 62 and/or the communication unit 69. When the computer program is loaded into RAM63 and executed by processor 61, one or more steps of the governor control method described above may be performed. Alternatively, in other embodiments, the processor 61 may be configured to perform the governor control method in any other suitable manner (e.g., by way of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program 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, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, 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 compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described herein may be implemented on a service 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 kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can 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, speech, or tactile input.

It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired result of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit 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 is characterized by comprising a power supply, a relay, an emergency switch, a controller, a driving circuit, a coil access port and at least one coil, wherein the power supply comprises a power supply positive terminal and a power supply negative terminal;

the controller is configured to:

the drive circuit is used for:

and when the control signal is received, a driving signal is output to drive the relay to be closed or opened so as to electrify or cut off the coil connected to the coil access port, so that the speed limiter is set or reset.

2. The governor control circuit of claim 1, wherein the coil comprises at least one of a car-side governor set coil, a car-side governor reset coil, a counterweight-side governor set coil, and a counterweight-side governor reset coil.

3. The governor control circuit of claim 1, wherein the relay is further provided with a state feedback terminal, the state feedback terminal being connected to the controller.

4. The governor control circuit of claim 1, wherein the controller is further connected to a main control board of an elevator, the controller further to:

obtaining operation data of the elevator from the main control board;

5. The governor control circuit of any of claims 1-4, wherein the controller is provided with a key, the controller further configured to:

6. The governor control circuit of claim 5, wherein the controller is further to:

7. A speed limiter control method applied to the speed limiter control circuit according to any one of claims 1 to 6, comprising:

if yes, switching to a preset operation mode;

8. The governor control method of claim 7, wherein the determining whether emergency electric operation is permitted comprises:

9. A service equipment comprising a speed limiter control circuit as claimed in any one of claims 1 to 6, wherein the speed limiter control circuit controller comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the speed limiter control method of any of claims 7-8.

10. A computer-readable storage medium having stored thereon computer instructions for causing a processor to perform the governor control method of any of claims 7-8 when executed.