Digital Demodulation in data acquisition system for multi-frequency electrical impedance tomography

摘要：

In order to extract the impedance information atdifferent frequencies in our multi-frequency electrical impedancetomography (EIT) system, a digital demodulation method wasemployed. Theoretically, this method can improve the SNR by2 /N times, if we sampling N point per period. Moreover, asvery little system resources been needed in this method, all thecalculating operations can be finished in a single FieldProgrammable Gate Arrays (FPGA) device instead of in apersonal computer. And the final data acquisition system basedon this method was established and the preliminary imagingresults were obtained.

作者: Shi Xuetao You Fusheng Ji Zhenyu Fu Feng Liu Ruigang Dong Xiuzhen

作者单位: School of Biomedical Engineering, Fourth Military Medical University,Xian, 710033, 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: 1-3

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）