Electrical Impedance Spectro-Tomography Based on Dielectric Relaxation Model
Electrical Impedance Spectro-Tomography Based on Dielectric Relaxation Model
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DOI：
10.1109/jsen.2017.2710146
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发表时间：
2017-12-15
影响因子：
4.3
通讯作者：
Takei, Masahiro
中科院分区：
文献类型：
--
作者：
Baidillah, Marlin Ramadhan;Iman, Al-Amin Saichul;Takei, Masahiro
针对相对复杂的介质目标，提出了一种由准相邻传感法和频时差分成像法组成的电阻抗谱层析成像方法。针对多电极电阻抗断层成像传感器，设计了一种基于四线测量技术的电阻抗谱测量方法。由于电化学反应发生的时间较短，而空间几何形状趋于恒定，因此需要利用频时差分成像技术进行空间分布监测。一个人工的一组幻影，所提出的技术是能够显示科尔-科尔参数作为每个测量对的介电弛豫模型。与相邻法相比，准相邻法的Re（Z）值提高了2倍，Imag（Z）值提高了10倍，高灵敏度和均匀灵敏度图面积扩大了60%。该方法还可以成功地消除高频测量时的负电阻。
An electrical impedance spectro-tomography consists of a quasi-adjacent sensing method and a frequency-time difference imaging for relatively complex dielectric object monitoring has been proposed. A quasi-adjacent sensing method is designed to measure an electrical impedance spectroscopy based on four-wire measurement technique at the multi-electrodes electrical impedance tomography sensor. A frequency-time difference imaging for spatial distribution monitoring is needed, as the electrochemical reaction incur during the short time meanwhile the spatial geometry tends to be constant. An artificial set of phantoms were made and the proposed technique was capable to show the Cole-Cole parameters as a dielectric relaxation model on each measurement pair. Compare with the adjacent method, using the quasi-adjacent method show Re(Z) is two times higher, Imag(Z) is ten times higher, and a higher and homogeneous sensitivity map area are 60% wider. A negative resistance at high-frequency measurement also can be eliminated successfully by using the proposed method.