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肺部血管搏动信号与呼吸信号对于肺部疾病或心血管疾病的鉴定有重要意义,为了提取这2种信号,根据人体生物阻抗测量特点,设计了阻抗测量平台,可实现20,kHz和200,kHz的混频激励.针对测得的气血阻抗信号,利用小波变换实现了气血阻抗信息分离,结合能量分析法,气血变化规律可表征人体不同体位和呼吸状态,为肺部疾病的精确诊断奠定基础.
Pulmonary vascular beats and respiratory signals are important for the identification of lung diseases or cardiovascular diseases. In order to extract these two kinds of signals, the impedance measurement platform is designed according to the biological impedance measurement of the human body, which can achieve 20, kHz and 200, kHz mixing excitation.According to the measured blood-blood impedance signal, using wavelet transform to realize the blood-blood impedance information separation, combined with energy analysis, the law of blood and blood can characterize the human body in different positions and respiratory status, lung disease is accurate Diagnosis laid the foundation.