摘要
根据吸收光谱式光纤瓦斯传感器的设计原理及参数,设计并实现了光电微弱信号的检测电路,并对该电路的检测波形进行了数学分析.该电路的核心是锁相放大器.前置放大使用了仪用放大器AD620,和国产的发射、接收管.该电路结构简单、实用、灵敏度高.
Based on designed principle and parameter of absorption spectrum optical fiber gas sensor,This paper designes and realizes the measure circuit of photoelectricity faintness signal, analyzes mathematically measured wave of the circuit, sets up the mathematical model of the measure circuit. The measure circuit core is lock-in amplifier, The front amplifier of the circuit is the instrument amplifier AD620. In addition, this paper uses project and receive tube made in China.
出处
《连云港化工高等专科学校学报》
2002年第2期11-14,共4页
Journal of Lianyungang College of Chemical Technology