Temperature-control fan controller

The invention discloses a temperature-control fan controller. The temperature-control fan controller comprises a single chip microcomputer module, a temperature sensor module, a fan motor driving module, a key module and a liquid crystal display module, wherein the temperature sensor module is used as the input of the single chip microcomputer module and used for detecting the temperature of the external environment and transmitting a temperature signal to the single chip microcomputer module, the fan motor driving module is connected with output signals of the single chip microcomputer module, the key module is used as the input of the single chip microcomputer module, and the liquid crystal display module is connected with the output signals of the single chip microcomputer module. The temperature sensor module collects the external temperature and sends detected data to the single chip microcomputer module; three keys can be used for setting an upper limit value and a lower limit value of a preset temperature; the single chip microcomputer module compares a current temperature value with the upper limit value and the lower limit value of the preset temperature, if the current temperature value is lower than the lower limit value of the preset temperature, a motor stops, the motor is in a low-speed state if the current temperature value is lower than the upper limit value and higher than the lower limit value of the preset temperature value, and the motor is in a high-speed state if the current temperature value is higher than the upper limit value; meanwhile, the current temperature and the preset temperature are displayed through the liquid crystal display module. By means of the temperature-control fan controller, gears of a fan can be automatically adjusted according to the external temperature, and therefore the performance that the wind force is large if the temperature is high and the wind force is small if the temperature is low is achieved, and the controller is small, simple and cheap.