Bioimpedance measurement technology originated from the theory of bioelectricity,which uses the electrical characteristics of biological tissues to extract and analyze human signals for some physiological and pathological studies.Based on the biological cell equivalent circuit model,a complex impedance-frequency response function model with each component parameter as the solution variable was established.The equivalent circuit fitting was realized by solving the function curve regression.The idea of nonlinear least square method(NLS)was adopted,and the genetic algorithm(GA)was introduced to provide the initial value estimation and reduce the fitting error.
关键词
生物阻抗测量/等效电路拟合/曲线回归求解/混合算法思想
Key words
bioimpedance measurement/equivalent circuit fitting/curve regression solution/hybrid algorithm idea
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