摘要
为了提高电化学分析系统的分析速度和测量的准确度。探究如何对电化学分析系统中，既有慢变化又有快变化的pA-μA范围的微电流进行快速、准确的测量。基于定阻式I／V转换的方法，对pA～μA范围的微电流，设置了由微机控制的多个电流量程及自动调零电路，以及从软、硬件上进行抗工频干扰的设计。实现对宽范围微电流测量的量程快速搜索、转换，提高了电化学分析系统中pA-μA范围微电流测量的准确度。
In order to improve the speed of analysis and the accuracy of measurement in electrochemical analysis system, the fast-speed and accurate measurement of micro current of pA-μA range in both slow and fast change was researched. Based on the constant resistance I/V conversion method, for the pA-μA micro-current measurement range, a number of current computer control and automatic zero-adjusting circuit was set up, and anti-frequency interference design of software and hardware were carried out. The fast search and conversion in wide micro current measurement range were realized. Thereby the scope of pA-μA micro-current measurement accuracy is enhanced.
出处
《电子测量与仪器学报》
CSCD
2011年第11期972-977,共6页
Journal of Electronic Measurement and Instrumentation
关键词
微电流
测量
pA~μA
电化学分析系统
micro-currents
measurements
pA-μA
Electrochemical analysis system
