The traditional cooling fan has some shortcomings, such as loud noise, electricity consumption, manual control by people and inability to accurately sense the temperature of the surrounding environment. When people fall asleep, if there is no way to adjust the temperature of the fan in time, it will lead to a cold.<br> In order to solve this problem, a design scheme of intelligent temperature-controlled fan based on solar power generation and lithium iron phosphate battery storage is proposed: the system collects the temperature of the surrounding environment through a temperature sensor, converts the collected temperature into a temperature signal, and transmits the temperature signal to the single chip microcomputer, which processes the temperature signal and outputs it to the display screen, displays the current temperature value on the display screen, calls the control function of the fan, and then controls the speed of the fan. When the measured temperature exceeds the set temperature threshold, the fan has the highest rotation speed; when the measured temperature is between the set temperature thresholds, the fan has a normal rotation speed; when the measured temperature is lower than the set temperature threshold, the fan stops. The solar energy charges the lithium battery through the solar panel, and the lithium battery stores electricity, and supplies power to the system through the power generation booster module. The LCD1602 LCD screen dynamically refreshes and displays the temperature data collected by the DS18B20 temperature sensor in real time. DS18B20 temperature sensor exchanges data with single chip microcomputer through single bus. The temperature sensor is calculated by single-chip computer program, which can automatically turn on the fan over temperature, realize the cooling drive of the fan, and intelligently control the temperature of the fan system.
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