化学反应相变电位式传感器数据采集接口技术  

The Design Of The Data Acquisition Interface Of The Potentiometric Sensor Based On The Chemical Reaction Induced Phase Transition

作　　者：王博[1] 田亚菲[1] 

机构地区：[1]兰州大学信息科学与工程学院

出　　处：《传感器世界》2004年第9期24-27,共4页Sensor World

摘　　要：化学反应相变电位式传感器是基于还原性物质使电极表面金属离子被还原而沉积,导致 电极的开路电位发生突变的原理而工作的。本文描述了以 8051 单片机为核心的数据采集接口电路并介绍了其在多路化学反应相变电位式传感器系统中的应用。Based on the principle that some reductive substances can induce the phase transition of the metal ions of the electrode surface and the open circuit potential of the electrode is therefore changed, a potentiometric sensor was developed. The data acquisition interface circuit of the sensor based on 8051 single chip is designed. The relationship between the open circuit potential and the concentration of the metal ion which is related to the content of the reductive substances can be taken to analyse the reductive substances.

关 键 词：电位式传感器 化学反应相变 开路电势 数据采集接口 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]