Adaptive heat dissipation device of vehicle-mounted equipment

Abstract

A self-adaptive heat dissipation device for vehicle-mounted equipment includes an MCU microcontroller, a temperature detection module, a power module and a fan, the temperature signal output of the temperature detection module is connected to the ADC pin of the MCU microcontroller. The power module enable terminal is connected to a GPIO pin of the MCU microcontroller. The fan is provided with a fan state output end and a rotational speed control signal input end; the fan state output end is connected with the TIMER1 pin of the MCU microcontroller; and the rotational speed control signal inputend is connected with the TIMER2 pin of the MCU microcontroller. The heat dissipation device utilizes the MCU microcontroller of the vehicle-mounted equipment to carry out logic judgment and fan control, realizes the self-adaptive adjustability of the fan speed of the heat dissipation system, reduces the heat dissipation power of the vehicle-mounted equipment, and realizes the fan state monitoringthrough the MCU microcontroller. The device has the advantages of high reliability, low power consumption and low noise.

Description

technical field [0001] The invention relates to the field of electricity, in particular to heat dissipation technology for vehicle-mounted electronic equipment, in particular to an adaptive heat dissipation device for vehicle-mounted equipment. Background technique [0002] In the prior art, the active cooling system of the on-board equipment uses the power signal and the ground signal to control the operation of the fan. When the system detects that the temperature exceeds the set start threshold, it controls to turn on the fan power, the fan works at the maximum speed, and the temperature drops to stop When the threshold is reached, cut off the power supply and the fan will stop working immediately. Although the cooling system is simple to control and easy to implement, it has the following disadvantages: the fan is always working at the maximum speed, resulting in waste of power consumption and increasing the noise of the cooling system, which cannot meet the requirements...

AI Technical Summary

Problems solved by technology

Although the cooling system is simple to control and easy to implement, it has the following disadvantages: the fan is always working at the maximum speed, which causes waste of power consumption and increases the noise of the cooling system, which cannot meet the requirements of the existing vehicle equipment for low power consumption; Know the working status of the fan. If the fan fails during operation, the continuous power supply will cause the fan body to overheat, causing the fan and power supply to burn out and cause a fire, resulting in a safety hazard

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