温度的测量用DS18B20温度传感器测量，并用数码管显示测量值，用PWM控制冷却风扇控制温度到恒定值。

The measurement of temperature adopts DS18B20 temperature sensor and the measurement value is displayed by LEDs. The Fuel Cell temperature is controlled by cooling fan which adopts PWM control.

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超低噪音水平智能风扇控制电路我们的自动温度传感器。

Extreme low noise level Smart Fan Control Circuit based on our Automatic Temperature sensor.

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与温度自动调节装置一样，必需控制好冷却风扇以保证发动机在一个恒定的温度下运转。

Like the thermostat, the cooling fan has to be controlled so that it allows the engine to maintain a constant temperature.

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