Elevator control device, elevator system and elevator control method

Abstract

The invention discloses an elevator control device, an elevator system and an elevator control method, and relates to the technical field of elevators. The elevator control device comprises a permanent magnet, an induction coil and a control unit. The permanent magnet is fixedly mounted on the speed limiter rotating wheel; the induction coils comprise the first induction coil and the second induction coil, the control unit is electrically connected with the first induction coil and the second induction coil, and the first power supply signal serves as a power supply to supply power to the control unit, so that the control unit does not need to excessively depend on an external power supply, and the risk that an elevator breaks down and is out of control due to external power supply faults is reduced. The second power signal generated by the second induction coil serves as a signal reflecting the speed of the elevator, the control unit adjusts the moving speed of the elevator in real time according to the received second power signal, the elevator does not need to depend on a numerous and jumbled speed sensing system, and the complexity and the failure rate of the elevator control device are reduced.

Description

Technical Field

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

[0002] Elevators are essential transportation tools in production and life. Currently, the operation of elevators is achieved through control devices. In the existing elevator speed limit system, the control device relies too much on external power supply. When the external power supply fails, there are risks such as control failure of the elevator, resulting in frequent elevator failures. Moreover, existing elevators mostly rely on complex and expensive speed induction systems to detect the elevator speed, which increases the overall cost and complexity of the elevator system to a certain extent. Summary of the Invention

[0003] The purpose of the present invention is to provide an elevator control device, an elevator system, and an elevator control method to solve the problems of high complexity and high failure rate of existing elevator control devices.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] In the first aspect, an elevator control device is provided, including:

[0006] A permanent magnet fixedly installed on a governor rotating wheel;

[0007] An induction coil, including a first induction coil and a second induction coil fixedly arranged within the magnetic field of the permanent magnet. The first induction coil is used to output a first power signal, and the second induction coil is used to output a second power signal;

[0008] A control unit electrically connected to the first induction coil and the second induction coil respectively. The first power signal serves as a power source to supply power to the control unit, and the control unit adjusts the moving speed of the elevator according to the received second power signal.

[0009] Optionally, the control unit includes a rectification module, a main control module, and a detection module; the rectification module is electrically connected to the first induction coil and the main control module, and the rectification module is used to filter out the AC component in the first power signal and output it to the main control module; the detection module is electrically connected to the second induction coil and the main control module; the detection module is used to detect the output voltage signal of the second power signal and transmit it to the main control module. A speed curve is preset in the main control module. The main control module compares the output voltage signal of the second power signal with the speed curve. When the output voltage signal of the second power signal is greater than the speed voltage threshold corresponding to the speed curve, the main control module controls the elevator to decelerate.

[0010] Optionally, the speed curve includes an accelerating zone, a constant-speed zone, and a decelerating zone, and the acceleration in the accelerating zone is equal in magnitude and opposite in direction to the acceleration in the decelerating zone.

[0011] Optionally, the control unit further includes an execution module, and the execution module includes an electromagnet, a spring, and a push rod; the spring is fixedly installed at a specified position, one end of the push rod is connected to the spring, through holes are circumferentially and evenly formed in the circumferential direction of the speed limiter rotating wheel, the electromagnet is electrically connected to the main control module, and the main control module can control the electromagnet to magnetically attract the spring, and the stretched spring drives the other end of the push rod to insert into the through hole.

[0012] Optionally, the detection module includes a detection circuit and a changeover switch that are electrically connected, the detection circuit is electrically connected to the second induction coil, and the changeover switch is electrically connected to the main control module.

[0013] Optionally, the execution module is an electronic safety clamp.

[0014] Optionally, the rectification module is a rectification circuit.

[0015] Optionally, the elevator control device further includes a mounting bracket, and the first induction coil and the second induction coil are fixedly arranged in the magnetic field of the permanent magnet through the mounting bracket.

[0016] Optionally, the first induction coil, the second induction coil, and the speed limiter rotating wheel are coaxially arranged, and the rotating shaft of the speed limiter rotating wheel passes through the first induction coil and the second induction coil.

[0017] In a second aspect, an elevator system is provided, including the above-mentioned elevator control device.

[0018] In a third aspect, an elevator control method is provided, which uses the above-mentioned elevator control device, and includes:

[0019] Obtaining a first power signal via the first induction coil;

[0020] Obtaining a second power signal via the second induction coil;

[0021] Adjusting the moving speed of the elevator via the control unit according to the received second power signal, and using the first power signal as a power supply to supply power to the control unit.

[0022] Optionally, the elevator control method further includes:

[0023] Filtering out the AC component in the first power signal via the rectification module of the control unit and outputting it to the main control module of the control unit;

[0024] The detection module of the control unit detects the output voltage signal of the second power supply signal and transmits it to the main control module of the control unit;

[0025] A speed curve is preset in the main control module. The main control module compares the output voltage signal of the second power supply signal with the speed curve. When the output voltage signal of the second power supply signal is greater than the speed voltage threshold corresponding to the speed curve, the main control module controls the elevator to decelerate.

[0026] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0027] A permanent magnet is installed on the rotating wheel of the speed limiter of the elevator control device, and an induction coil is fixedly installed within the magnetic field range of the permanent magnet. The induction coil includes a first induction coil and a second induction coil. When the elevator moves up and down, the rotating wheel of the speed limiter rotates synchronously, and the permanent magnet on the rotating wheel of the speed limiter rotates. Power supply signals are respectively generated in the first induction coil and the second induction coil. The first power supply signal generated by the first induction coil is used to supply power to the control unit, so that the control unit does not have to rely too much on the external power supply, reducing the risk of elevator failure and out-of-control caused by external power supply failure. At the same time, the second power supply signal generated by the second induction coil can be used as a signal reflecting the elevator speed. The control unit adjusts the moving speed of the elevator in real time according to the received second power supply signal. The elevator does not need to rely on a complex speed sensing system, reducing the complexity and failure rate of the elevator control device.

[0028] Since the elevator system includes the above elevator control device, the overall complexity of the elevator system is low and the reliability is strong, which is conducive to reducing the overall cost of the elevator system and the later maintenance and repair costs.

[0029] The elevator control method uses the above elevator control device to control the elevator, enhancing the reliability of elevator control. The elevator does not need to rely on a complex speed sensing system, reducing the complexity and failure rate of elevator control. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is the front view structural schematic diagram of the elevator control device described in the disclosed embodiment of the present invention;

[0032] Figure 2 It is the structural schematic diagram of the rotating wheel of the speed limiter described in the disclosed embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the control of the elevator control device according to the disclosed embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the speed curve according to the disclosed embodiment of the present invention.

[0035] Wherein:

[0036] 1. Permanent magnet;

[0037] 2. Induction coil; 21. First induction coil; 22. Second induction coil;

[0038] 3. Control unit; 31. Rectification module; 32. Main control module; 33. Detection module; 34. Execution module; 341. Electromagnet; 342. Spring; 343. Thrust rod;

[0039] 100. Governor rotating wheel; 101. Through hole; 102. Speed curve; 1021. Acceleration zone; 1022. Constant speed zone; 1023. Deceleration zone. Detailed implementation manner

[0040] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention disclosed, the solution of the present invention disclosed will be further described below. It should be noted that, without conflict, the embodiments of the present invention disclosed and the features in the embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to fully understand the present invention disclosed, but the present invention disclosed may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention disclosed, rather than all the embodiments.

[0042] As Figure 1 shown, the elevator control device includes a permanent magnet 1, an induction coil 2 and a control unit 3. The permanent magnet 1 is fixedly installed on the governor rotating wheel 100. The induction coil 2 includes a first induction coil 21 and a second induction coil 22 fixedly arranged in the magnetic field of the permanent magnet 1. The first induction coil 21 is used to output a first power signal, and the second induction coil 22 is used to output a second power signal. The control unit 3 is electrically connected to the first induction coil 21 and the second induction coil 22 respectively. The first power signal is used as a power source to supply power to the control unit 3, and the control unit 3 adjusts the moving speed of the elevator according to the received second power signal.

[0043] In this embodiment, the permanent magnet 1 is a powerful magnet made of permanent magnetic material commonly used in the field. The elevator mentioned in this embodiment is a vertical elevator that moves up and down. The speed limiter is a commonly used safety control device in the field of vertical elevators. When the car of the vertical elevator moves, the rotating wheel 100 of the speed limiter will rotate accordingly. The rotation speed of the rotating wheel 100 of the speed limiter is related to the moving speed of the elevator. The permanent magnet 1 is installed on the rotating wheel 100 of the speed limiter. When the rotating wheel 100 of the speed limiter rotates, it synchronously drives the permanent magnet 1 to rotate, and power supply signals are respectively generated in the first induction coil 21 and the second induction coil 22. The first power supply signal generated by the first induction coil 21 can be used to supply power to the control unit 3, so that the control unit 3 does not have to rely too much on the external power supply. When there is a fault in the external power supply, the first power supply signal generated by the first induction coil 21 can ensure the normal power supply of the control unit 3 and reduce the risk of power failure and out-of-control of the control unit 3 due to external power supply failure. At the same time, the second power supply signal generated by the second induction coil 22 can be used as a signal reflecting the elevator speed. It can be understood that the rotation speed of the rotating wheel 100 of the speed limiter is related to the moving speed of the elevator. The faster the elevator moves, the faster the rotation speed of the rotating wheel 100 of the speed limiter, and at the same time the rotation speed of the permanent magnet 1 increases, and the second power supply signal generated by the second induction coil 22 will also increase accordingly. Relying on this principle, the second power supply signal generated by the second induction coil 22 can be used as a signal reflecting the elevator speed, that is, the stronger the second power supply signal (the second power supply signal can be an induced current or an induced voltage), it means that the current elevator speed is faster. The control unit 3 can rely on the second power supply signal to judge whether the current elevator speed is too high or too low. If the speed is too high and exceeds the safe speed of the elevator operation, the control unit 3 controls the elevator to decelerate. On the contrary, if the speed is too low, the elevator is controlled to accelerate, so that the control unit 3 adjusts the moving speed of the elevator in real time according to the received second power supply signal, without relying on a complex speed sensing system, reducing the complexity and failure rate of the elevator control device.

[0044] Specifically, in this embodiment, the control unit 3 includes a rectification module 31, a main control module 32, and a detection module 33; the rectification module 31 is electrically connected to the first induction coil 21 and the main control module 32, and the rectification module 31 is used to filter out the AC component in the first power supply signal and output it to the main control module 32; the detection module 33 is electrically connected to the second induction coil 22 and the main control module 32; the detection module 33 is used to detect the output voltage signal of the second power supply signal and transmit it to the main control module 32. A speed curve 102 is preset in the main control module 32. The main control module 32 compares the output voltage signal of the second power supply signal with the speed curve 102. When the output voltage signal of the second power supply signal is greater than the speed voltage threshold corresponding to the speed curve 102, the main control module 32 controls the elevator to decelerate.

[0045] Such as Figure 3As shown in the figure, the control unit 3 of this embodiment includes a rectification module 31, a main control module 32, and a detection module 33. The rectification module 31 is electrically connected to the first induction coil 21 and the main control module 32. The rectification module 31 is used to filter out the AC component in the first power signal and output it to the main control module 32. The rectification module 31 is a commonly used rectification circuit in the field, and its specific circuit structure refers to the prior art, which will not be elaborated in this embodiment. The detection module 33 is electrically connected to the second induction coil 22 and the main control module 32. The detection module 33 is used to detect the output voltage signal of the second power signal and transmit it to the main control module 32. Further, the detection module 33 includes a detection circuit and a switch connected electrically. The detection circuit is electrically connected to the second induction coil 22, and the switch is electrically connected to the main control module 32. The detection circuit and the switch are commonly used circuits and electronic switches in the field. The detection circuit can detect the output voltage signal of the second power signal and transmit it to the switch. The switch is in electrical communication connection with the main control module 32 and can send a control signal to the main control module 32. A speed curve 102 is preset in the main control module 32. The speed curve 102 can be pre-written into the main control module 32 in the form of code. During the operation of the elevator, the speed of the elevator preferably operates according to this speed curve 102. Therefore, when the main control module 32 receives the control signal sent by the switch, it immediately compares the output voltage signal of the second power signal with the speed voltage threshold corresponding to the speed curve 102. If the output voltage signal fed back by the second power signal is greater than the speed voltage threshold corresponding to the speed curve 102, it means that the elevator speed at the current moment has exceeded the speed of the speed curve 102, and the main control module 32 controls the elevator to decelerate. On the contrary, if the output voltage signal fed back by the second power signal is less than the speed voltage threshold corresponding to the speed curve 102, the main control module 32 controls the elevator to accelerate, so that the real-time speed of the elevator can be as close as possible to the speed of the speed curve 102.

[0046] Preferably, as Figure 4 shown, the speed curve 102 includes an acceleration zone 1021, a constant-speed zone 1022, and a deceleration zone 1023. The acceleration zone 1021 is set in the low-floor area, the constant-speed zone 1022 is set in the middle-floor area, and the deceleration zone 1023 is set in the high-floor area. The speeds of the acceleration zone 1021, the constant-speed zone 1022, and the deceleration zone 1023, as well as the regional ranges, are designed and selected according to actual parameters such as the elevator acceleration. In this embodiment, the acceleration of the acceleration zone 1021 is equal in magnitude and opposite in direction to the acceleration of the deceleration zone 1023. When the elevator enters the acceleration zone 1021 and the deceleration zone 1023, the main control module 32 automatically adjusts the real-time speed of the elevator step by step according to the speed curves of the acceleration zone 1021 and the deceleration zone 1023, and flexibly controls the elevator speed. For example, as the elevator gradually approaches the target floor, every certain period of time, the main control module 32 controls the elevator to reduce the speed to a certain value.

[0047] Optionally, the control unit 3 further includes an execution module 34. The main control module 32 can adjust the elevator speed or perform an emergency brake on the elevator through the execution module 34. The execution module 34 in this embodiment can be an electronic safety clamp or other types of speed control devices, or can also be in the following forms:

[0048] As Figure 1 shown, the execution module 34 includes an electromagnet 341, a spring 342, and a push rod 343; the spring 342 is fixedly installed at a specified position, one end of the push rod 343 is connected to the spring 342, the speed limiter rotating wheel 100 is circumferentially and evenly provided with through holes 101, the electromagnet 341 is electrically connected to the main control module 32, and the main control module 32 can control the electromagnet 341 to magnetically attract the spring 342. The stretched spring 342 drives the other end of the push rod 343 to insert into the through hole 101 to brake the speed limiter rotating wheel 100, and thus brake the elevator.

[0049] Optionally, the elevator control device in this embodiment may further include a mounting bracket. The first induction coil 21 and the second induction coil 22 are fixedly arranged in the magnetic field of the permanent magnet 1 through the mounting bracket, which is convenient for the assembly of the first induction coil 21 and the second induction coil 22. In addition, in this embodiment, the first induction coil 21, the second induction coil 22, and the speed limiter rotating wheel 100 are coaxially arranged, and the rotating shaft of the speed limiter rotating wheel 100 passes through the first induction coil 21 and the second induction coil 22, with a compact assembly and reduced space occupation.

[0050] Furthermore, this embodiment also provides an elevator system. The elevator system includes the above elevator control device. The specific execution process of the elevator system refers to the above elevator control device. The overall complexity of the elevator system is low and the reliability is strong, which is beneficial to reducing the overall cost of the elevator system and the later maintenance and repair costs.

[0051] In addition, this embodiment also provides an elevator control method, which uses the above elevator control device and includes:

[0052] Obtaining a first power signal via the first induction coil 21; in this step, the elevator movement drives the speed limiter rotating wheel 100, the permanent magnet 1 rotates with the speed limiter rotating wheel 100, and a first power signal will be generated in the first induction coil 21. This first power signal is used as a power source to supply power to the control unit 3;

[0053] Obtain a second power supply signal via the second induction coil 22; in this step, the permanent magnet 1 rotates with the speed limiter rotating wheel 100, the second induction coil 22 generates a second power supply signal, and the control unit 3 adjusts the moving speed of the elevator according to the received second power supply signal. If the speed is too high and exceeds the safe speed of the elevator operation, the control unit 3 controls the elevator to decelerate; conversely, if the speed is too low, the elevator is controlled to accelerate, so that the control unit 3 adjusts the moving speed of the elevator in real time according to the received second power supply signal, without relying on a complex speed sensing system, reducing the complexity and failure rate of the elevator control device.

[0054] Specifically, the rectification module 31 of the control unit 3 filters out the AC component in the first power supply signal and outputs it to the main control module 32 of the control unit 3; the detection module 33 of the control unit 3 detects the output voltage signal of the second power supply signal and transmits it to the main control module 32 of the control unit 3; a speed curve 102 is preset in the main control module 32, and the speed curve 102 is pre-written into the main control module 32 in the form of code. During the operation of the elevator, the speed of the elevator preferably operates according to this speed curve 102. For this reason, when the main control module 32 receives the control signal sent by the changeover switch, it immediately compares the output voltage signal of the second power supply signal with the speed voltage threshold corresponding to the speed curve 102. If the output voltage signal fed back by the second power supply signal is greater than the speed voltage threshold corresponding to the speed curve 102, the main control module 32 controls the elevator to decelerate; if the output voltage signal fed back by the second power supply signal is less than the speed voltage threshold corresponding to the speed curve 102, the main control module 32 controls the elevator to accelerate, so that the real-time speed of the elevator can fit the speed of the speed curve 102 as much as possible.

[0055] Preferably, the speed curve 102 includes three parts: an acceleration zone 1021, a constant speed zone 1022, and a deceleration zone 1023. The acceleration in the acceleration zone 1021 is equal in magnitude and opposite in direction to the acceleration in the deceleration zone 1023. When the elevator enters the acceleration zone 1021 and the deceleration zone 1023, the main control module 32 automatically adjusts the real-time speed of the elevator step by step according to the speed curves of the acceleration zone 1021 and the deceleration zone 1023 in time, flexibly controlling the elevator speed. The specific setting of the speed curve 102 and the subsequent control process of the elevator have been elaborated in detail above, and will not be repeated here. This elevator control method uses the above elevator control device to control the elevator, enhancing the reliability of elevator control, achieving flexible control of the elevator, the elevator does not need to rely on a complex speed sensing system, reducing the complexity and failure rate of elevator control.

[0056] It should be noted that, in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0057] The above are only specific embodiments disclosed in the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments described herein, but rather will conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An elevator control device, characterized in that: include: A permanent magnet (1) is fixedly mounted on the speed governor rotating wheel (100); An induction coil (2), comprising a first induction coil (21) and a second induction coil (22) fixedly arranged in the magnetic field of the permanent magnet (1), wherein the first induction coil (21) is used to output a first power supply signal, and the second induction coil (22) is used to output a second power supply signal; A control unit (3) is electrically connected to the first induction coil (21) and the second induction coil (22), respectively. The first power signal is used as a power source to supply power to the control unit (3). The control unit (3) adjusts the moving speed of the elevator according to the received second power signal.

2. The elevator control device according to claim 1, characterized in that: The control unit (3) comprises a rectifier module (31), a main control module (32) and a detection module (33); the rectifier module (31) is electrically connected to the first induction coil (21) and the main control module (32); the rectifier module (31) is used to filter out the AC component in the first power supply signal and output it to the main control module (32); the detection module (33) is electrically connected to the second induction coil (22) and the main control module (32); the detection module (33) is used to detect the output voltage signal of the second power supply signal and transmit it to the main control module (32); a speed curve (102) is preset in the main control module (32); the main control module (32) compares the output voltage signal of the second power supply signal with the speed curve (102); when the output voltage signal of the second power supply signal is greater than the speed voltage threshold corresponding to the speed curve (102), the main control module (32) controls the elevator to slow down.

3. The elevator control device according to claim 2, characterized in that: The speed curve (102) comprises a speed-up zone (1021), a constant speed zone (1022) and a speed-down zone (1023), and the acceleration in the speed-up zone (1021) and the acceleration in the speed-down zone (1023) are equal in magnitude and opposite in direction.

4. The elevator control device according to claim 2, characterized in that: The control unit (3) further comprises an execution module (34), the execution module (34) comprising an electromagnet (341), a spring (342) and a push rod (343); the spring (342) is fixedly installed at a designated position, one end of the push rod (343) is connected to the spring (342), the speed limiter rotating wheel (100) is evenly provided with through holes (101) in the circumferential direction, the electromagnet (341) is electrically connected to the main control module (32), the main control module (32) can control the electromagnet (341) to magnetically attract the spring (342), and the spring (342) is stretched to drive the other end of the push rod (343) to insert into the through hole (101).

5. The elevator control device according to claim 2, characterized in that: The detection module (33) comprises an electrically connected detection circuit and a conversion switch, the detection circuit is electrically connected to the second induction coil (22), and the conversion switch is electrically connected to the main control module (32).

6. The elevator control device according to claim 2, characterized in that: The elevator control device also includes a mounting frame, through which the first induction coil (21) and the second induction coil (22) are fixedly arranged in the magnetic field of the permanent magnet (1).

7. The elevator control device according to claim 2, characterized in that: The first induction coil (21), the second induction coil (22) and the speed limiter rotating wheel (100) are coaxially arranged, and the rotating axis of the speed limiter rotating wheel (100) passes through the first induction coil (21) and the second induction coil (22).

8. An elevator system, characterized in that: The elevator control device comprises the elevator control device according to any one of claims 1 to 7.

9. An elevator control method, characterized in that: The elevator control device according to any one of claims 1 to 7 comprises: Obtaining a first power supply signal via a first induction coil (21); Obtaining a second power supply signal via a second induction coil (22); The moving speed of the elevator is adjusted via a control unit (3) according to the received second power signal, and the first power signal is used as a power source to supply power to the control unit (3).

10. The elevator control method according to claim 9, characterized in that: The elevator control method further comprises: The AC component in the first power supply signal is filtered out via the rectifier module (31) of the control unit (3) and output to the main control module (32) of the control unit (3); The output voltage signal of the second power supply signal is detected by the detection module (33) of the control unit (3) and transmitted to the main control module (32) of the control unit (3); A speed curve (102) is preset in the main control module (32). The main control module (32) compares the output voltage signal of the second power supply signal with the speed curve (102). When the output voltage signal of the second power supply signal is greater than a speed voltage threshold corresponding to the speed curve (102), the main control module (32) controls the elevator to slow down.

Images