Development of a stair-step multifrequency synchronized excitation signal for fast bioimpedance spectroscopy.
Development of a stair-step multifrequency synchronized excitation signal for fast bioimpedance spectroscopy.
复制标题
用于快速生物阻抗谱的阶梯多频同步激励信号的开发
DOI:
10.1155/2014/143461
复制
发表时间:
2014
影响因子:
--
通讯作者:
Wen H
中科院分区:
文献类型:
--
作者:
Yang Y;Bian H;Du F;Sun Q;Wen H
Wideband excitation signal with finite prominent harmonic components is desirable for fast bioimpedance spectroscopy (BIS) measurements. This work introduces a simple method to synthesize and realize a type of periodical stair-step multifrequency synchronized (MFS) signal. The Fourier series analysis shows that the p-order MFS signal f(p, t) has constant 81.06% energy distributed equally on its p 2nth primary harmonics. The synthesis principle is described firstly and then two examples of the 4-order and 5-order MFS signals, f(4, t) and f(5, t), are synthesized. The method to implement the MFS waveform based on a field-programmable gate array (FPGA) and a digital to analog converter (DAC) is also presented. Both the number and the frequencies of the expected primary harmonics can be adjusted as needed. An impedance measurement experiment on a RC three-element equivalent model is performed, and results show acceptable precision, which validates the feasibility of the MFS excitation.
登录
查看更多内容
影响因子:
2.4
作者:
Sanchez, B.;Fernandez, X.;Bragos, R.
通讯作者:
Bragos, R.
影响因子:
2.4
作者:
Sanchez, B.;Vandersteen, G.;Schoukens, J.
通讯作者:
Schoukens, J.
影响因子:
2.2
作者:
Sanchez, Benjamin;Vandersteen, Gerd;Bragos, Ramon
通讯作者:
Bragos, Ramon
影响因子:
5.6
作者:
ANDRIA, G;SAVINO, M;TROTTA, A
通讯作者:
TROTTA, A
影响因子:
3.1
作者:
Czerniec, Sharon A.;Ward, Leigh C.;Kilbreath, Sharon L.
通讯作者:
Kilbreath, Sharon L.