Fan rotating speed driving device

Abstract

The utility model discloses a fan rotating speed driving device which comprises a control panel module (1), a proportional amplifier module (2), a mechanical shell (3), a power supply aviation plug interface (4), a CAN (Controller Area Network) aviation plug interface (5) and a driving aviation plug interface (6), the fan rotating speed driving device receives a driver display control terminal instruction through a CAN bus, calculates and outputs a PWM signal to a steering valve proportional electromagnet, adjusts the opening degree of a valve port of the proportional electromagnetic valve, and then controls the rotating speed of the fan. Progressive adjustment based on the water temperature range is adopted, the rotating speed of the fan is adjusted by collecting the water temperature, and it is ensured that when the rotating speed of the fan is adjusted, the system reaches the heat dissipation capacity limit under the rotating speed of the fan, so that the purposes of self-adaption of the water temperature and the heat dissipation capacity, reduction of the adjusting frequency of the wind speed and the rotating speed and reduction of the power consumption of the fan are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan driving, and in particular relates to a fan speed driving device. Background Art

[0002] At present, the fan speed drive devices of some vehicles have problems such as single equipment function, poor control effect, high energy consumption in the fan heat dissipation power range, and low integration. Utility Model Content

[0003] The utility model provides a fan speed driving device to solve the above problems and ensure that when the fan speed is adjusted, the system has reached the heat dissipation capacity limit under the fan speed, thereby achieving the purpose of adapting water temperature and heat dissipation, reducing the frequency of wind speed adjustment, and reducing fan power consumption.

[0004] In order to solve the above technical problems, the utility model provides a fan speed driving device, which is characterized by comprising a main control board module (1), a proportional amplifier module (2), a mechanical housing (3), a power supply aviation plug interface (4), a CAN aviation plug interface (5), and a drive aviation plug interface (6); the vehicle-mounted power supply enters the power supply interface aviation plug (4), and is respectively input to the power inlet of the proportional valve amplifier module and the main control board module, so as to supply power to the proportional amplifier module and the main control board module; the driver display and control terminal is connected to the main control board module through the CAN aviation plug interface (5); the main control board module receives the speed control instruction from the driver display and control terminal, performs parsing processing, and then forwards it to the proportional amplifier module; after receiving the instruction, the proportional amplifier module outputs a corresponding current, and the current flows out from the drive aviation plug interface (6), drives the proportional electromagnet of the steering valve, adjusts the valve opening of the proportional electromagnet valve, and thus controls the fan speed.

[0005] Beneficial Effects: This utility model independently designs a low-cost, cost-effective, stable and reliable fan speed drive device for special vehicles. As a key component of the fan speed control function, the fan speed drive device receives commands from the driver's display and control terminal via the CAN bus, calculates and outputs a PWM signal to the steering valve proportional solenoid, adjusts the valve opening of the proportional solenoid valve, and thus controls the fan speed.

[0006] The fan speed drive device adopts progressive adjustment based on the water temperature range. It adjusts the fan speed by collecting the water temperature to ensure that when the fan speed is adjusted, the system has reached the heat dissipation capacity limit under the fan speed, thereby achieving the purpose of adapting the water temperature and heat dissipation, reducing the frequency of wind speed adjustment, and reducing fan power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the system structure of this utility model

[0008] Figure 2 This is a schematic diagram of the system panel of the utility model. DETAILED DESCRIPTION

[0009] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation methods of the present invention are further described in detail below.

[0010] The utility model provides a fan speed driving device, comprising a main control board module (1), a proportional amplifier module (2), a mechanical housing (3), a power supply aviation plug interface (4), a CAN aviation plug interface (5), and a drive aviation plug interface (6);

[0011] The fan speed drive receives commands from the driver's display and control terminal through the CAN bus, calculates and outputs a PWM signal to the steering valve proportional solenoid, adjusts the valve opening of the proportional solenoid valve, and thus controls the fan speed.

[0012] The main control board module is mainly composed of a power conversion unit and a bus communication unit;

[0013] The power conversion unit consists of a DCDC switching power supply and a linear power supply, which mainly realizes the voltage output of 24V to 5V and 5V to 3.3V, providing a stable power supply for the bus communication unit.

[0014] The bus communication unit consists of CAN1, CAN2, and GD32F407 processor unit circuits, and is mainly responsible for exchanging data with the driver display and control terminal and the proportional amplifier module on the CAN bus.

[0015] The proportional amplifier module consists of CAN, PWM1, PWM2 interfaces, and a power conversion circuit. It is mainly responsible for receiving CAN2 bus instructions from the main control board and sending drive current data. It calculates and outputs two PWM signals to the steering valve proportional solenoid to adjust the valve opening of the proportional solenoid valve and thus control the fan speed.

[0016] The main control board module and the proportional amplifier module are connected via a CAN bus, which is mainly used for bus information interaction between the main control board module and the proportional amplifier module.

[0017] The MCU processor of the main control board module adopts the ARM series GD32F407, supports 2-way isolated CAN2.0B bus communication and 1-way RS232 communication.

[0018] The main control board module power supply adopts a DC-DC regulated power supply to convert the vehicle power consumption into the main control board power consumption. Combined with the filtering circuit, it can ensure that the power supply ripple of the main control board is within 4‰.

[0019] The proportional amplifier module has 1 CAN bus interface, 2 PWM signals, adjustable driving current 0-2A, and output current control accuracy of ±1mA.

[0020] The fan speed drive device is scalable and flexible. If the user's current drive channel requirement is greater than 2 channels, the user's needs can be met by simply increasing the number of proportional amplifier modules.

[0021] The specific implementation process is:

[0022] like Figure 1-2 As shown, the vehicle power supply enters the power interface aviation plug (4), and is respectively input to the power inlet of the proportional valve amplifier module and the power change unit inlet of the main control board module, providing a stable 24V power supply for the proportional amplifier module and the main control board module, ensuring the stability and reliability of the system operation.

[0023] like Figure 1-2 As shown, the driver display and control terminal is connected to the CAN1 bus of the main control board module through the CAN aviation plug interface (5). The main control board module receives the speed control command from the driver display and control terminal, and through the analysis and processing of the GD32F407 processor, forwards the processed data to the proportional amplifier module through the CAN2 bus. The proportional amplifier module receives the CAN2 bus command and controls PWM1 and PWM2 to output the corresponding current. The current flows out from the driving aviation plug interface (6). The steering valve proportional solenoid is driven to adjust the valve opening of the proportional solenoid valve, thereby controlling the fan speed.

[0024] like Figure 1-2 As shown in the figure, the proportional amplifier module collects the working current of the steering valve proportional solenoid through the PWM1 and PWM2 interfaces, and sends the collected current value to the CAN2 bus of the main control board module. After being parsed and processed by the GD32F407 processor, the processed data is forwarded to the driver display and control terminal through the CAN1 bus, completing the real-time monitoring of the working current of the steering valve proportional solenoid.

[0025] This utility model has the advantages of low cost, high cost performance, stability and reliability. It receives the driver's display and control terminal instructions through the CAN bus, calculates and outputs a PWM signal to the steering valve proportional solenoid, adjusts the valve opening of the proportional solenoid valve, and thus controls the fan speed. At the same time, it can monitor the driving current of the steering valve proportional solenoid.

[0026] The fan speed driver receives commands from the driver's display and control terminal via the CAN bus, calculates and outputs a PWM signal to the steering valve's proportional solenoid, adjusting the valve opening and, in turn, controlling the fan speed. The fan speed driver supports two isolated CAN 2.0B bus communications, two PWM signals, and an adjustable drive current of 0-2A with an output current control accuracy of ±1mA. The fan speed driver offers scalability and flexibility. If the user requires more than two current drive channels, simply add proportional amplifier modules to meet the user's needs.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fan speed driving device, characterized in that: The vehicle comprises a main control board module (1), a proportional amplifier module (2), a mechanical housing (3), a power supply aviation plug interface (4), a CAN aviation plug interface (5), and a drive aviation plug interface (6); the vehicle power supply is respectively input to the power inlet of the proportional amplifier module and the main control board module through the power supply aviation plug interface (4) to supply power to them; the driver display and control terminal is connected to the main control board module through the CAN aviation plug interface (5); The main control board module is connected to the proportional amplifier module via a CAN bus; the output end of the proportional amplifier module is connected to the steering valve proportional electromagnet via a driving aviation plug interface (6).

2. A fan speed driving device according to claim 1, characterized in that: The MCU processor of the main control board module supports 2-way isolated CAN2.0B bus communication and 1-way RS232 communication.

3. The fan speed driving device according to claim 1, wherein: The main control board module power supply uses a DC-DC regulated power supply to convert vehicle power to main control board power.

4. The fan speed driving device according to claim 1, wherein: The proportional amplifier module has 1 CAN bus interface, 2 PWM signals, adjustable driving current 0-2A, and output current control accuracy of ±1mA.

5. The fan speed driving device according to claim 1, characterized in that: The proportional amplifier module is provided with PWM1 and PWM2 interfaces.

6. The fan speed driving device according to claim 1, characterized in that: The main control board module includes a power conversion unit and a bus communication unit; the power conversion unit provides a stable power supply for the bus communication unit; The bus communication unit is responsible for exchanging data with the driver display and control terminal and the proportional amplifier module via the CAN bus.

7. The fan speed driving device according to claim 6, characterized in that: The proportional amplifier module collects the working current of the steering valve proportional solenoid through the PWM1 and PWM2 interfaces, and sends the collected current value to the main control board module.

8. The fan speed driving device according to claim 7, characterized in that: The main control board module forwards the processed data to the driver's display and control terminal to achieve real-time monitoring of the working current of the steering valve proportional solenoid.

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