Study of Voltage Control Current Source in Electrical Impedance Tomography System

摘要：

A steady and efficient Voltage Control Current Source(VCCS) with broad bandwidth plays a very important role in the quality of final images for Electrical Impedance Tomography(EIT) system. Therefore, two models of current source areproposed in the paper: Advanced Howland VCCS and DoubleOperational Amplifiers VCCS. Both of the two models aresimulated through a software named Multisim, and the results ofsimulation show that both models can keep an output impedancehigher than 1M Ω when the frequency changes from 10 kHz to 1MHz and the load varies from 100 Ω to 1000 Ω.The results alsoshow that both models meet the requirements of VCCS in EITsystem, they are hoped to provide usefull approaches for thedesign of practical VCCS of EIT system.

作者: Li Zhangyong Xu Zhui Ren Chaoshi Wang Wei Zhao Dechun Zhang Huiquan

作者单位: Biomedical Engineering Research Center Chongqing University of Posts and Telecommunications Chongqing, China

会议类型: 国际会议

会议名称: The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-06-18（万方平台首次上网日期，不代表论文的发表时间）