碘元素测定仪中的光电检测电路  

A weak photoelectric signal processing circuit of the iodine analyzer

作　　者：吕治安[1] 毛谦敏[2] 

机构地区：[1]襄樊学院物理系,湖北襄樊441053 [2]中国计量学院计量技术工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2006年第3期199-202,共4页Journal of China Jiliang University

摘　　要：介绍了一种智能化全自动碘元素测定仪中的光电信号处理电路的组成及工作原理.该电路由1/V转换、低噪声微弱前置放大、50 Hz陷波、动态校零和信号识别电路等组成.它可以有效地补偿试管及溶液差异的影响,稳定地捕获信号的突变点.It is necessary to amplify, process and find out the signals which we want to get. The theory and design of the weak photoelectric signal processing circuit of the iodine analyzer is described. The circuit consists of I/V convertion, low noise weak signal amplification, 50 Hz trap, dynamic alignment, and signal recognition etc. It can minimize the influence of test bubes and difference of the liquid and stably trap the mutation of the signal.

关 键 词：测碘仪 光电信号处理 浮地电源 

分 类 号：TM938.83[电气工程—电力电子与电力传动]