智能风扇调节系统源代码 通过人体红外传感器检测人群分布，调节风扇对人群集中地方集中送风，提高风扇的利用率，达到节能减排的目的。实现交直流电机调速，红外解码等功能-Smart Fan control system source code, infrared sensors to detect people through the distribution of the human body to regulate the local concentration of the fan of th

可以利用CAP捕获输入引脚获得过零点，也可以利用捕获功能计算得到交流风扇的当前转速。-Can use the CAP to capture input pin for zero-crossing, the capture function can also be used to calculate the current speed AC fan.

AC table fan speed control