采用两个温度传感器采集不同地方的两个温度，根据两个温度传感器的温度差进行比较确定电机旋转方向（正转或反转），并自动控制电机转速，温度差越高速度越快。电机调速采用PWM方式，并需要采集电机速度实现闭环控制，并将温度和电机速度通过液晶显示器显示出来。-Using two temperature sensors collect two temperatures in different places, were compared to determine motor rotation direction (forward or reverse) according to the temperature difference between the two temperature sensors and automatic control of motor speed, the higher the temperature difference, the faster the speed. Motor speed using PWM mode, and need to collect the motor speed to achieve closed-loop control, and the temperature and motor speed through the LCD monitor display.