摘要
设计了一种烟气颗粒物激光检测仪的激光信号处理电路,检测系统应用激光Mie散射原理。信号处理电路采集散射光的光强信号,采用双光路结构消除干扰噪声,将微弱电流信号转换成便于测量或转换的0-10V电压信号,输出稳定,反应灵敏,能够对输入的变化快速反应产生可信输出。
A laser signal processing circuit for smoke particulate concertration detecting system is designed based on the Mie scattering theory. The circuit collects laser intensity signal of scattered light by using double pathes to eliminate noise, and translates weak current signal into O-IOV voltage signal which easy to exam, with stable putput, reaction sensitive, and can give an credible result of multivariate input.
出处
《机械工程师》
2013年第8期109-111,共3页
Mechanical Engineer
关键词
烟气颗粒物
微弱信号放大
双光路
smoke particulate
weak signal amplification
double pathes
