Novel automobile multi-fan intelligent controller
An intelligent controller and multi-fan technology, applied in pump control, machine/engine, non-variable pumps, etc., can solve the problems of separately adjusting the fan speed and achieve the effect of improving comfort and reliability
Active Publication Date: 2015-01-14
JIANGSU HAOFENG AUTO PARTS
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Problems solved by technology
Shanghai University has conducted research on the cooling fan of an automobile engine based on dual fans. Jiangsu Chaoli Company has developed a dual fan fan intelligent fan controller, but it has not been successfully used in commercial production, and its dual fans are interdependent. When a fan fails, the other one will also stop working; nor can the speed of each fan be adjusted separately according to the conditions of different regions to meet different requirements
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[0017] refer to figure 1 and figure 2 , a new type of vehicle multi-fan intelligent controller of the present invention, which consists of an ECU control unit 10, a PWM signal conditioning unit 20, a microprocessor 30, a drive amplification unit 40, a fan circuit 50, a power supply circuit 60, and a temperature sensor 70 , a temperature sensing signal conditioning unit 80, a voltage sensor 90, and a voltage sensing signal conditioning unit 100. Each part and the relationship between the parts will be described in detail below:
[0018] The ECU control unit 10 sends out a low-frequency PWM signal according to the operating conditions of each fan circuit 50 . When the controller is working, each fan circuit will transmit the sampled signal to the microcontroller 30, and the microcontroller 30 will transmit the signal to the ECU control unit 10, and the ECU control unit will comprehensively judge the working conditions of each fan circuit and send The 10Hz-1kHz low-frequency P...
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The invention discloses a novel automobile multi-fan intelligent controller. The novel automobile multi-fan intelligent controller comprises an electrical control unit (ECU), a microprocessor, a drive amplification unit, and a fan loop; the ECU sends a low-frequency pulse-width modulation (PWM) signal according to the running working condition of each fan loop; the microprocessor judges the running state of each fan loop according to the low-frequency PWM signal which is provided by the ECU so as to send a high-frequency PWM signal corresponding to each fan loop; the drive amplification unit amplifies the high-frequency PWM signal which is output by the microprocessor; and the fan loop receives the amplified high-frequency PWM signal which is provided by the drive amplification unit to ensure that the fan loop is electrified and runs and then a current signal of the fan loop is sampled and then is sent to the microprocessor. Each fan in a fan control system can be independently controlled, and when the block or other faults of a certain fan in an automobile engine cooling and controlling system which comprises a plurality of fans occur, other fans can still work normally, so reliability of a system can be improved.
Description
technical field [0001] The invention relates to a DC fan controller for vehicles, in particular to an intelligent controller for multi-fan applications, and is especially suitable for PWM speed regulation control of automobile air-conditioning blowers and automobile engine cooling fans. Background technique [0002] At present, energy-saving intelligent electronic control technology has become an important direction of automobile control system. As an important means of heat dissipation and ventilation, the fan is also an indispensable component in the automotive control system. The main applications include automotive engine cooling fans, automotive air-conditioning condensers and blowers and other systems. For fan motors used in automotive control systems, DC motors are generally used to drive them to ensure that the fan control system has good starting and braking performance, and realizes smooth speed regulation in a wide range. [0003] At this stage, there are still v...
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IPC IPC(8): F04D27/00
Inventor 伍春生朱建方
Owner JIANGSU HAOFENG AUTO PARTS