摘要
介绍了电阻层析成像系统(ERT)的结构组成和工作原理,设计了基于FPGA的电阻层析成像数控系统的数据采集与控制系统,采用FPGA实现了包括恒流源极性转换、电极传感器切换、数据采集、数据通信等控制功能,着重叙述了硬件的实现方法,并结合软件进行在线调试。实验结果表明,该ERT测量系统能够对不同物质的电导率进行在线高精度测量,测量范围最高可达10 kΩ。
This paper describes the structure and operational principle of the electrical resistance tomography system （ERT） , and a data acquisition and control system designed in FPGA for the electrical resistance tomography. The FPGA is used for polarity conversion of the constant current source, electrode sensor switch, data acquisition, data communication and other control functions. The implemention of the hardware is mainly described, as well as the software which is debugged. The experiment results showed that the ERT measurement system function well at high-precision online measurement of different substances＇ conductivity, and the measuring range is up to 10kΩ.
出处
《电子技术应用》
北大核心
2014年第2期74-77,共4页
Application of Electronic Technique
关键词
电阻层析成像
FPGA
数据采集系统
恒流源
电极传感器
电导率
electrical resistance tomography
FPGA
data acquisition system
current source
electrode sensor
conductivity
