Elevator direct current motor driving controller

Abstract

The invention belongs to the technical field of motor driving controllers, and particularly relates to an elevator direct current motor driving controller which comprises a circuit board, a power supply conversion module, an input interface, an output interface, an MCU and an H-bridge driving module are arranged on the circuit board, and the H-bridge driving module is connected with the power supply conversion module, the input interface, the output interface, the MCU and the H-bridge driving module. The circuit board is provided with a Hall current sensor, a wireless module, a signal line interface and a PLC (Programmable Logic Controller) built-in timer; the H-bridge driving module monitors the current of the motor in real time, and when the current of the motor exceeds a set threshold value, protection measures such as cutting off a power supply of the motor or reducing the rotating speed of the motor can be taken in time, the motor is prevented from being damaged due to overload, the service life of the motor is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of motor drive controllers, and in particular relates to a direct current motor drive controller for an elevator. Background Art

[0002] A motor drive controller is a key device used to precisely control motor operation. By receiving external command signals, it manages motor start, stop, speed regulation, and steering control, ensuring stable and efficient operation according to preset requirements. In elevator systems, DC motor drive controllers play a crucial role, directly impacting the elevator's performance, safety, and reliability.

[0003] At present, although the existing elevator DC motor drive controller can realize the basic control functions of the motor to a certain extent, it still has some obvious shortcomings in practical applications. Among them, the most prominent problem is the lack of an effective overload protection mechanism for the motor. During the operation of the elevator, the motor may be subjected to excessive current and load due to sudden changes in load, mechanical failure or improper operation. However, the existing motor drive controller is often unable to detect the overload state of the motor in a timely and accurate manner, or even if an overload is detected, it is unable to quickly take effective protection measures. This may cause the motor to run for a long time under overload conditions, and then cause serious faults such as motor overheating, insulation damage, and winding burning. It will not only shorten the service life of the motor and increase maintenance costs, but may also pose a threat to the safe operation of the elevator, and even cause safety accidents, resulting in losses to personnel and property. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a DC motor drive controller for an elevator.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a lift DC motor drive controller, including a circuit board, a power conversion module is provided on the circuit board, an input interface is provided on the circuit board, an output interface is provided on the circuit board, and an MCU is provided on the circuit board.

[0006] Furthermore, an H-bridge driving module is provided on the circuit board, a Hall current sensor is provided on the circuit board, a wireless module is provided on the circuit board, a signal line interface is provided on the circuit board, and a PLC built-in timer is provided on the circuit board.

[0007] Furthermore, the signal line interface, input interface, power conversion module, PLC built-in timer, H-bridge driver module, Hall current sensor and wireless module are all connected to the MCU.

[0008] Furthermore, the input interface is connected to the output end of the power conversion module, and the output interface is used for connecting to an external motor.

[0009] Furthermore, the power conversion module adopts an industrial-grade AC-DC power module.

[0010] Furthermore, the power conversion module is used to convert 220V AC power into 24V DC power to power the entire system.

[0011] Furthermore, the H-bridge driving module is used to control the start, stop or steering of the motor.

[0012] Furthermore, the Hall current sensor is used to monitor the motor current and perform overload protection.

[0013] Furthermore, the wireless module is used to receive remote control instructions.

[0014] Furthermore, the PLC has a built-in timer for controlling the motor running time.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The power conversion module converts 220V AC power into 24V DC power to power the system. 24V is within the safe voltage range, which reduces the risk of electric shock to operators and improves the safety of the entire system.

[0016] (2) The MCU receives the input interface signal and outputs the PWM signal to the H-bridge driver module. The PWM signal can accurately control the speed and direction of the motor, achieving smooth and precise operation of the elevator and meeting the usage requirements under different working conditions.

[0017] (3) The MCU reads the Hall current sensor data and can understand the working current of the motor in real time, providing a basis for motor operation status monitoring and fault diagnosis, helping to detect potential problems in a timely manner and ensure the stable operation of the system.

[0018] (4) The Hall current sensor receives remote control commands and is combined with a wireless module to connect the DC motor cable to transmit the driving current, thereby realizing remote control of the elevator. The operator can conveniently control the operation of the elevator within a certain range, thereby improving work efficiency and convenience of use.

[0019] (5) The H-bridge driver module monitors the motor current in real time. When the motor current exceeds the set threshold, it can take protective measures in time, such as cutting off the motor power supply or reducing the motor speed, to prevent the motor from being damaged due to overload, thereby extending the service life of the motor and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The figure is a schematic structural diagram of a DC motor drive controller for an elevator according to the present invention.

[0022] Among them, 1. Signal line interface, 2. Input interface, 3. Output interface, 4. Power conversion module, 5. PLC built-in timer, 6. H-bridge driver module, 7. Hall current sensor, 8. MCU, 9. Wireless module, 10. Circuit board, 11. Signal line interface. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0024] like Figure 1 As shown, the present invention proposes a lift DC motor drive controller, including a circuit board 10, on which a power conversion module 4 is provided. The power conversion module 4 adopts an industrial-grade AC-DC power supply module. The power conversion module 4 is used to convert 220V AC power into 24V DC power to power the entire system. The circuit board 10 is provided with an input interface 2, an output interface 3, an MCU8, an H-bridge drive module 6, a Hall current sensor 7, and a wireless module 9. The wireless module 9 is used to receive remote control instructions. The circuit board 10 is provided with a signal line interface 1 and a PLC built-in timer 5. The PLC built-in timer 5 is used to control the motor running time. The signal line interface 1, the input interface 2, the power conversion module 4, the PLC built-in timer 5, the H-bridge drive module 6, the Hall current sensor 7 and the wireless module 9 are all connected to the MCU8. The input interface 2 is connected to the output end of the power conversion module 4, the output interface 3 is used for an external motor, and the H-bridge drive module 6 is used to control the start, stop or steering of the motor.

[0025] During specific use, the power conversion module 4 converts 220V AC into 24V DC to power the entire system. The MCU8 receives the signal from the input interface 2, outputs a PWM signal to the H-bridge driver module 6, reads the data of the Hall current sensor 7, and communicates with the setting panel through the signal line interface 1. The PLC built-in timer 5 realizes the motor running time control. The H-bridge driver module 6 receives the PWM signal of the MCU8 to control the motor direction / speed. The H-bridge driver module 6 monitors the motor current in real time to achieve overload protection. The Hall current sensor 7 receives the remote control command. The wireless module 9 connects the DC motor cable to transmit the driving current. The signal line interface 1 is connected to the human-computer interaction device. The above is the overall workflow of the present invention. Just repeat this step next time you use it.

[0026] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DC motor drive controller for an elevator, comprising a circuit board (10), characterized in that: The circuit board (10) is provided with a power conversion module (4), the circuit board (10) is provided with an input interface (2), the circuit board (10) is provided with an output interface (3), and the circuit board (10) is provided with an MCU (8).

2. The elevator DC motor drive controller according to claim 1, characterized in that: The circuit board (10) is provided with an H-bridge driving module (6), the circuit board (10) is provided with a Hall current sensor (7), the circuit board (10) is provided with a wireless module (9), the circuit board (10) is provided with a signal line interface (1), and the circuit board (10) is provided with a PLC built-in timer (5).

3. The elevator DC motor drive controller according to claim 2, characterized in that: The signal line interface (1), input interface (2), power conversion module (4), PLC built-in timer (5), H-bridge drive module (6), Hall current sensor (7) and wireless module (9) are all connected to the MCU (8).

4. The elevator DC motor drive controller according to claim 3, characterized in that: The input interface (2) is connected to the output end of the power conversion module (4), and the output interface (3) is used for connecting to an external motor.

5. The elevator DC motor drive controller according to claim 1, characterized in that: The power conversion module (4) adopts an industrial-grade AC-DC power supply module.

6. The elevator DC motor drive controller according to claim 1, characterized in that: The power conversion module (4) is used to convert 220V alternating current into 24V direct current to power the entire system.

7. The elevator DC motor drive controller according to claim 2, characterized in that: The H-bridge drive module (6) is used to control the start, stop or direction of the motor.

8. The elevator DC motor drive controller according to claim 2, characterized in that: The Hall current sensor (7) is used to monitor the motor current and perform overload protection.

9. The elevator DC motor drive controller according to claim 2, characterized in that: The wireless module (9) is used to receive remote control instructions.

10. The elevator DC motor drive controller according to claim 2, characterized in that: The PLC built-in timer (5) is used to control the motor running time.

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