摘要
设计了一种基于光电检测原理的降雨、沙尘暴报警系统,用来对海上或偏远地区无人看护的设备提供保护信号,在此基础上继续提供了与降雨大小成比例关系的脉宽调制(PWM)输出以及一分钟内降雨雨滴数值的LCD显示。本报警器利用降雨雨滴和空气中悬浮颗粒对红外光的消光作用来产生相应的电信号,通过相应的滤波、信号放大等处理来获得降雨大小和沙尘暴信息,并及时向其他在降雨、沙尘暴天气发生时需自动进入保护状态的仪器发出报警信号。本仪器选用器件简单、廉价,适于大批量生产,又便于维修和更换测试。
This paper discusses a Precipitation and sandstorm optical alert system. The system can detect whether the phenomenon of rain or sandstorm happen and provide protection signal to some instruments deployed on voluntary observing ships （VOS） or in some remote areas without any service requirement or operator intervention and in further, it can output the voltage that in proportion to the rainfall intensity .With the extinction ability of rain and sand particles to the infrared light, a photoelectric can convert the phenomenon of rain and sandstorm into voltage,the voltage is processed by the filters and amplifiers for giving warning signal of rain and dust storms as well as distinguish the level of the phenomenon.
出处
《电子设计工程》
2013年第2期137-139,143,共4页
Electronic Design Engineering
