新型红外雨感器的设计

Design of Novel Infrared Rain Sensor

设计了一种新型的红外雨感器,用导光模块取代了传统的电容式雨感器感应电极,避免了与雨水的直接接触。为了提高系统的灵敏性和覆盖面积,该雨感器采用了4组红外发射接收管,以AT89C2051为控制核心,通过定时器产生固定频率38 kHz的脉冲驱动红外发射管,通过导光模块引导,以固定的角度发射并接收红外线,实时地处理接收管信号,综合分析接收信号,实时反映天气的变化。

A novel universal infrared rain sensor system was designed. The light guiding module replaced the traditional capacitive rain sensor sensing electrode to avoid direct contact with rain. In order to improve the sensitivity and coverage area of the system, 4 groups of infrared transmitting and receiving tubes were used in the rain sensor. AT89C2051 was the control core of the system. The timer generates a fixed frequency 38 kHz pulses to drive the infrared emission tube. Through the light guiding module, at a fixed angle of transmitting and receiving, the infrared was sent and received and real - time processed. The received signal was synthetically analyzed to reflect the weather change.