Elevator control device and elevator system

Abstract

The utility model discloses an elevator control device and an elevator system, 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. The elevator system comprises the elevator control device, and is low in complexity, low in overall cost and high in reliability.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to an elevator control device and an elevator system. Background Technology

[0002] Elevators are essential transportation tools in production and daily life. Currently, elevator operation is achieved through control devices. In existing elevator speed limiting systems, the control devices rely too heavily on external power supplies. When the external power supply fails, the elevator may experience control failures, leading to frequent malfunctions. Furthermore, existing elevators largely rely on complex and expensive speed sensing systems to detect elevator speed, which increases the overall cost and complexity of the elevator system. Utility Model Content

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

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] On the one hand, an elevator control device is provided, comprising:

[0006] The permanent magnet is fixedly installed on the speed limiter's rotating wheel;

[0007] The induction coil includes a first induction coil and a second induction coil fixedly disposed 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] The control unit is electrically connected to the first induction coil and the second induction coil respectively. The first power signal serves as the power source for the control unit, and the control unit adjusts the elevator's moving speed according to the received second power signal.

[0009] Optionally, the control unit includes a rectifier module, a main control module, and a detection module; the rectifier module is electrically connected to the first induction coil and the main control module, and 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 send it to the main control module; the main control module has a preset speed curve, and 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 velocity curve includes an acceleration region, a constant velocity region, and a deceleration region, wherein the acceleration in the acceleration region is equal in magnitude and opposite in direction to the acceleration in the deceleration region.

[0011] Optionally, the control unit further includes an execution module, which includes an electromagnet, a spring, and a push rod. The spring is fixedly installed at a designated position, one end of the push rod is connected to the spring, and the speed limiter rotating wheel has through holes evenly spaced around its circumference. The electromagnet is electrically connected to the main control module, and the main control module can control the electromagnet to magnetically attract the spring. When the spring is stretched, it causes the other end of the push rod to be inserted into the through hole.

[0012] Optionally, the detection module includes an electrically connected detection circuit and a changeover switch, wherein 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 rectifier module is a rectifier circuit.

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

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

[0017] On the other hand, an elevator system is provided, including the elevator control device described above.

[0018] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0019] This elevator control device mounts a permanent magnet on the governor's rotating wheel, 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 governor's rotating wheel rotates synchronously, causing the permanent magnet on the governor's rotating wheel to rotate. Power signals are generated in the first and second induction coils respectively. The first power signal generated by the first induction coil powers the control unit, reducing the control unit's reliance on external power and decreasing the risk of elevator malfunction and loss of control due to external power failure. Simultaneously, the second power signal generated by the second induction coil serves as a signal reflecting the elevator's speed. The control unit adjusts the elevator's speed in real time based on the received second power 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.

[0020] Because the elevator system includes the aforementioned elevator control device, the overall complexity of the elevator system is low and its reliability is high, which helps to reduce the overall cost of the elevator system and the cost of subsequent maintenance and repair. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the main structure of the elevator control device according to the disclosed embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the speed limiter rotating wheel according to the disclosed embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the elevator control device according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the speed curve described in the disclosed embodiment of this utility model.

[0026] in:

[0027] 1. Permanent magnet;

[0028] 2. Induction coil; 21. First induction coil; 22. Second induction coil;

[0029] 3. Control unit; 31. Rectifier module; 32. Main control module; 33. Detection module; 34. Execution module; 341. Electromagnet; 342. Spring; 343. Push rod;

[0030] 100. Speed ​​limiter rotating wheel; 101. Through hole; 102. Speed ​​curve; 1021. Acceleration zone; 1022. Constant speed zone; 1023. Deceleration zone. Detailed Implementation

[0031] To better understand the aforementioned objectives, features, and advantages of this utility model, the disclosed solutions will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention 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 disclosed in the present invention, and not all of them.

[0033] like Figure 1 As 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 mounted on the speed limiter rotating wheel 100. The induction coil 2 includes a first induction coil 21 and a second induction coil 22 fixedly disposed within 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 serves as the power source for the control unit 3, and the control unit 3 adjusts the elevator's moving speed according to the received second power signal.

[0034] In this embodiment, the permanent magnet 1 is a powerful magnet made of permanent magnet material, which is common in the field. The elevator mentioned in this embodiment is a vertical elevator, and the speed governor is a commonly used safety control device in the elevator field. When the elevator car moves, the speed governor rotating wheel 100 of the elevator will rotate accordingly. The rotation speed of the speed governor rotating wheel 100 is related to the elevator's speed. The permanent magnet 1 is installed on the speed governor rotating wheel 100. When the speed governor rotating wheel 100 rotates, it synchronously drives the permanent magnet 1 to rotate. Power signals are generated in the first induction coil 21 and the second induction coil 22 respectively. The first power signal generated by the first induction coil 21 can be used to power the control unit 3, so that the control unit 3 does not rely too much on the external power supply. When the external power supply fails, the first power signal generated by the first induction coil 21 can ensure the normal power supply of the control unit 3, reducing the risk of the control unit 3 losing control due to power failure. At the same time, the second power signal generated by the second induction coil 22 can be used as a signal to reflect the elevator speed. Understandably, the rotational speed of the speed limiter wheel 100 is related to the elevator's speed. The faster the elevator moves, the faster the speed limiter wheel 100 rotates, and the faster the permanent magnet 1 rotates. The second power signal generated by the second induction coil 22 will also be strengthened. Based on this principle, the second power signal generated by the second induction coil 22 can be used as a signal to reflect the elevator speed. That is, the stronger the second power signal (which can be an induced current or an induced voltage), the faster the current elevator speed. The control unit 3 can rely on the second power signal to determine whether the current elevator speed is too high or too low. If the speed is too high and exceeds the safe operating speed of the elevator, the control unit 3 controls the elevator to slow down. Conversely, if the speed is too low, the control unit 3 controls the elevator to speed up. This allows the control unit 3 to adjust the elevator's speed in real time based on the received second power signal, without relying on a complex speed sensing system, thus reducing the complexity and failure rate of the elevator control device.

[0035] Specifically, in this embodiment, the control unit 3 includes 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 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 signal and send it to the main control module 32. The main control module 32 has a preset speed curve 102. The main control module 32 compares the output voltage signal of the second power signal with the speed curve 102. When the output voltage signal of the second power signal is greater than the speed voltage threshold corresponding to the speed curve 102, the main control module 32 controls the elevator to decelerate.

[0036] like Figure 3As shown, the control unit 3 in this embodiment includes 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 signal and output it to the main control module 32. The rectifier module 31 is a commonly used rectifier circuit in the field, and its specific circuit structure is based on existing technology; therefore, it will not be described in detail 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. Furthermore, the detection module 33 includes an electrically connected detection circuit and a changeover switch. The detection circuit is electrically connected to the second induction coil 22, and the changeover switch is electrically connected to the main control module 32. The detection circuit and the changeover switch are commonly used circuits and electronic switches in the field. The detection circuit can detect the output voltage signal of the second power supply signal and send it to the changeover switch. The changeover switch is electrically communicatively connected to the main control module 32 and can send control signals to the main control module 32. The main control module 32 has a preset speed curve 102, which can be pre-written into the main control module 32 in the form of code. During elevator operation, the elevator speed preferably follows this speed curve 102. Therefore, when the main control module 32 receives the control signal from 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 of the second power supply signal is greater than the speed voltage threshold corresponding to the speed curve 102, it means that the elevator speed has exceeded the speed of the speed curve 102 at the current moment, and the main control module 32 controls the elevator to slow down. Conversely, if the output voltage signal of 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 speed up, so that the real-time speed of the elevator can match the speed of the speed curve 102 as closely as possible.

[0037] Preferably, such as Figure 4 As shown, the speed curve 102 includes three parts: an acceleration zone 1021, a constant speed zone 1022, and a deceleration zone 1023. The acceleration zone 1021 is located in the lower floor area, the constant speed zone 1022 is located in the middle floor area, and the deceleration zone 1023 is located in the upper floor area. The speeds and ranges of the acceleration zone 1021, constant speed zone 1022, and deceleration zone 1023 are designed and selected based on actual parameters such as 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 deceleration zone 1023, the main control module 32 automatically adjusts the real-time speed of the elevator according to the speed curves of the acceleration zone 1021 and deceleration zone 1023 over time, flexibly controlling the elevator speed. For example, as the elevator gradually approaches the target floor, at regular intervals, the main control module 32 controls the elevator to reduce its speed to a certain value.

[0038] Optionally, the control unit 3 further includes an execution module 34, through which the main control module 32 can adjust the elevator speed or perform emergency braking. In this embodiment, the execution module 34 can be an electronic safety brake or other type of speed control device, or it can take the following forms:

[0039] like Figure 1 As shown, the execution module 34 includes an electromagnet 341, a spring 342, and a push rod 343. The spring 342 is fixedly installed in a designated position, and one end of the push rod 343 is connected to the spring 342. The speed limiter rotating wheel 100 has through holes 101 evenly distributed around its circumference. 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. When the spring 342 is stretched, it drives the other end of the push rod 343 to insert into the through hole 101 to brake the speed limiter rotating wheel 100, thereby braking the elevator.

[0040] Optionally, the elevator control device of this embodiment may further include a mounting bracket, with the first induction coil 21 and the second induction coil 22 fixedly disposed within the magnetic field of the permanent magnet 1 via the mounting bracket, facilitating the assembly of the first induction coil 21 and the second induction coil 22. Furthermore, in this embodiment, the speed limiter rotating wheel 100 is coaxially arranged with the first induction coil 21 and the second induction coil 22, and the rotation shaft of the speed limiter rotating wheel 100 passes through the first induction coil 21 and the second induction coil 22, resulting in a compact assembly and reduced space occupation.

[0041] In addition, this embodiment also provides an elevator system, which includes the elevator control device described above. The specific execution process of the elevator system is the same as that of the elevator control device described above. The elevator system has low overall complexity and high reliability, which helps to reduce the overall cost of the elevator system and the cost of subsequent maintenance and repair.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest 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 installed on the speed limiter rotating wheel (100); The induction coil (2) includes a first induction coil (21) and a second induction coil (22) fixedly disposed 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 power 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) includes 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 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 signal and send it to the main control module (32). The main control module (32) has a preset speed curve (102). The main control module (32) compares the output voltage signal of the second power signal with the speed curve (102). When the output voltage signal of the second power signal is greater than the speed voltage threshold corresponding to the speed curve (102), the main control module (32) controls the elevator to decelerate.

3. The elevator control device according to claim 2, characterized in that, The velocity curve (102) includes an acceleration region (1021), a constant velocity region (1022), and a deceleration region (1023). The acceleration in the acceleration region (1021) is equal in magnitude and opposite in direction to the acceleration in the deceleration region (1023).

4. The elevator control device according to claim 2, characterized in that, The control unit (3) further includes an execution module (34), which includes 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) has through holes (101) evenly distributed around its circumference. 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). When the spring (342) is stretched, it drives 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) includes an electrically connected detection circuit and a changeover switch. The detection circuit is electrically connected to the second induction coil (22), and the changeover switch is electrically connected to the main control module (32).

6. The elevator control device according to claim 4, characterized in that, The execution module (34) is an electronic safety clamp.

7. The elevator control device according to claim 2, characterized in that, The rectifier module (31) is a rectifier circuit.

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

9. 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 rotation axis of the speed limiter rotating wheel (100) passes through the first induction coil (21) and the second induction coil (22).

10. An elevator system, characterized in that, Includes the elevator control device as described in any one of claims 1-9.

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