公开(公告)号：US20140188417A1

公开(公告)日：2014-07-03

申请号：US13877317

申请日：2011-10-13

申请人： Xiuzhen Dong ,  Xuyang Huo ,  Fusheng You ,  Xuetao Shi ,  Feng Fu ,  Ruigang Liu ,  Zhenyu Ji ,  Canhua Xu ,  Bin Yang ,  Min Yang ,  Jiaxue Qi ,  Wen Zhang ,  Nan Wang

发明人： Xiuzhen Dong ,  Xuyang Huo ,  Fusheng You ,  Xuetao Shi ,  Feng Fu ,  Ruigang Liu ,  Zhenyu Ji ,  Canhua Xu ,  Bin Yang ,  Min Yang ,  Jiaxue Qi ,  Wen Zhang ,  Nan Wang

IPC分类号： G01R27/02

CPC分类号： G01R27/02 ,  A61B5/053 ,  A61B5/0536 ,  A61B5/7225 ,  G01R27/14

摘要： An electrical impedance detecting device of a portable electrical impedance imaging system by utilizing a theory of sending excitation signal and detecting response signal and a method thereof, wherein the excitation signal is a constant square wave excitation current signal, the response voltage signal on a target is transformed to a square wave signal with appropriate amplitudes by buffering, amplifying, RC filtering and differential amplifying circuits, and then is transformed to a digital signal at a proper time by an analog-to-digital converter. The response voltage signal is sampled once when at high level and once when at low level for every circle of the square wave signal by the ADC, and a sample V1 and a sample V2 are obtained respectively, difference of the sample V1 and the sample V2 is taken as a detecting result for one circle. An average value of the detecting result from a plurality of circles may be taken as a final result. Information of electrical impedance is illustrated by the final result because the excitation current signal is constant.

摘要翻译： 一种通过利用发送激励信号和检测响应信号的理论的便携式电阻抗成像系统的电阻抗检测装置及其方法，其中激励信号是恒定方波激励电流信号，目标上的响应电压信号是 通过缓冲，放大，RC滤波和差分放大电路转换成具有适当幅度的方波信号，然后通过模拟 - 数字转换器在适当的时间转换为数字信号。 响应电压信号在高电平时被采样一次，一旦在ADC的每个圆波信号的低电平处被采样一次，并且分别获得样本V1和样本V2，样本V1和样本V2的差 作为一个圆的检测结果。 可以将来自多个圆的检测结果的平均值作为最终结果。 由于激励电流信号是恒定的，所以最终结果说明了电阻抗的信息。

公开(公告)号：US09995775B2

公开(公告)日：2018-06-12

申请号：US13877317

申请日：2011-10-13

申请人： Xiuzhen Dong ,  Xuyang Huo ,  Fusheng You ,  Xuetao Shi ,  Feng Fu ,  Ruigang Liu ,  Zhenyu Ji ,  Canhua Xu ,  Bin Yang ,  Min Yang ,  Jiaxue Qi ,  Wen Zhang ,  Nan Wang

发明人： Xiuzhen Dong ,  Xuyang Huo ,  Fusheng You ,  Xuetao Shi ,  Feng Fu ,  Ruigang Liu ,  Zhenyu Ji ,  Canhua Xu ,  Bin Yang ,  Min Yang ,  Jiaxue Qi ,  Wen Zhang ,  Nan Wang

IPC分类号： G01R27/02 ,  A61B5/053 ,  A61B5/00 ,  G01R27/14

CPC分类号： G01R27/02 ,  A61B5/053 ,  A61B5/0536 ,  A61B5/7225 ,  G01R27/14

摘要： A device for detecting electrical impedance by utilizing a theory of excitation and response signals and method thereof, wherein the excitation signal is a square wave excitation current signal (1), the response signal on a target is transformed to a square wave signal with appropriate amplitudes by buffering, amplifying, RC filtering and differential amplifying, then is transformed to a digital signal at a proper time by an analog-to-digital converter. The response signal is sampled once when at high level and once when at low level for every circle by the ADC, and a sample V1 and a sample V2 are obtained respectively, difference of the samples is taken as a detecting result for one circle. An average value of the detecting result from a plurality of circles is taken as a final result. Information of electrical impedance is illustrated by the final result because the excitation current signal is constant.