此系统采用AT89S52单片机，利用红外线的直线传播与叠加原理实现，设计的硬件电路简单，具有高抗干扰能力、故障识别能力强的特点；

This system adopted the single computer AT89S52, the hardware circuit was very simple and it had the characteristics of high anti-jamming capabilities and a strong ability to identify.

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感应技术：采用人体热释红外线检测技术。具有灵敏度高、抗干扰强、待机功耗小等优点。

Sensitive technology: body heat releasing infrared ray testing technology is applied, with advantages of high sensitivity, strong anti-jamming capability and small power consumption.

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数码电路控制，红外线感应，伸手自动出风；抗干扰能力强。

Featured with digit circuit, infrared sensor, and good interference resistant capacity.

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