微安培检测器的研制  

Development of the Micro-ampere Detector

作　　者：张欣[1] 张玉林[1] 伍海龙[1] 魏守水[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《化工自动化及仪表》2006年第3期70-73,共4页Control and Instruments in Chemical Industry

基　　金：国家自然科学基金重大研究计划资助项目(90307003);山东省自然科学基金资助项目(Y2003G03);国家自然科学基金资助项目(10572078)

摘　　要：安培检测器的设计中,电化学池通电后产生的微电流信号极其微弱,往往淹没在噪声中很难采集识别。根据安培检测和恒电位器原理,利用数据放大器采集放大微弱信号,研制了一种新型微安培检测器。微安培检测器电路性能稳定,实验测试的结果与理论值符合很好,其中微电流测试电路不仅可应用于微安培检测器中,还可配上不同的传感器用于其它测量微弱电流信号的场合。In the design of ampere detector, the micro-current signal in the electrochemical cell is extremely weak after electrifying,so it is difficult to be distinguished from the noise. A new micro-ampere detector,which uses the data amplifier to enlarge the weak signal,is developed according to the principle of the ampere detection and the petentiostat. The circuit performance of the micro-ampere detector is very stable. The test result is consistent with the theory value. The circuit testing micro-current not only can apply to the micro-ampere detector,but also can apply to the other situations with different sensors to test micro-current signal.

关 键 词：微安培检测 恒电位器 数据放大器 程控电压源 

分 类 号：TN722[电子电信—电路与系统]