High output-impedance current source for electrical impedance tomography
This paper emphasized on analyzing the frequencydomain and the time-domain characteristic of the enhanced Howland circuit for electrical impedance tomography, and studied the influencing factor in depth. Firstly, the output current, impedance and their influencing factors were discussed in detail by numerical simulation. Secondly, it simulated the frequency characteristic of current source, and finally, designed the experiment to measure the output current and impedance. Simulation and experiment indicated that it could improve the performance by selecting the suitable amplifier, peripheral components to meet requirements of electrical impedance tomography.
Electrical impedance tomography (EIT) current source output impedance.
Dechun Zhao
College of Bio-information, Chongqing University of Posts and Telecommunications 2nd Chongwen Rd., Nan an District, Chongqing, China
国际会议
上海
英文
1112-1115
2011-10-15(万方平台首次上网日期,不代表论文的发表时间)