高速电阻层析成像数据采集系统设计  

High-Speed Data Acquisition System of Electrical Resistance Tomography

作　　者：胡松钰[1] 王保良[1] 黄志尧[1] 李海青[1] 

机构地区：[1]浙江大学控制科学与工程学系工业控制技术国家重点实验室,杭州310027

出　　处：《传感技术学报》2008年第1期79-82,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助(60532020;50576084)

摘　　要：针对目前电阻层析成像(ERT)系统实时性欠佳的问题,研制成功一套基于DSP和USB2.0技术的ERT数据采集系统。模块化设计保证了系统良好的可维护性和可扩展性,双极性脉冲电流激励技术和优化的结构设计实现了系统高速的数据采集能力,从而突破了ERT系统数据采集速度的瓶颈问题。测试结果表明,系统在取得良好精度的同时达到1464帧/秒的数据采集速度,满足了实际工业应用的实时性要求。To improve real-time character of electrical resistance tomography （ERT） system, a data acquisi- tion system for ERT based on DSP and USB2. 0 was developed. The system was designed in a modular fashion , which was easy to maintain and convenient to expand. High - speed data capture rate could be achieved due to utilizing a switched dc current pulse technique and optimized system structure, which solved the bottleneck of data acquisition speed of ERT system. Test results show that a data capture rate of more than 1400 frame/s can be achieved with a satisfying precision, which meets the real-time requirement of process industry.

关 键 词：电阻层析成像 DSP USB2.0 双极性电流脉冲 高速 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]