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METHOD AND APPARATUS FOR DIGITAL DEMODULATION AND FURTHER PROCESSING OF SIGNALS OBTAINED IN THE MEASUREMENT OF ELECTRICAL BIOIMPEDANCE OR BIOADMITTANCE IN AN OBJECT
专利权人:
Osypka Medical GmbH
发明人:
Markus J. Osypka,Eberhard Gersing
申请号:
US16680597
公开号:
US20200113523A1
申请日:
2019.11.12
申请国别(地区):
US
年份:
2020
代理人:
摘要:
Methods and apparatus for digital demodulation of signals obtained in the measurement of electrical bioimpedance or bioadmittance of an object. One example comprises: generating an excitation signal of known frequency content; applying the excitation signal to the object; sensing a response signal of the object; sampling and digitizing the response signal to acquire a digitized response signal representing the response signal with respect to frequency content, amplitude and phase; correlating, for each frequency fAC of the excitation signal applied, digitized samples of the response signal, with discrete values representing the excitation signal; calculating, using the correlated signals for each frequency fAC of the excitation signal applied, complex values for the bioimpedance Z(fAC); providing, over time, a set of digital bioimpedance waveforms Z(fAC,t)); separating the base bioimpedance Z0(fAC), from the waveforms; and separating the changes of bioimpedance Δ;Z(fAC,t), from the waveforms.
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中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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