【摘要】 本文叙述一种采用 80 98单片机对生理信号数据进行分析处理 ,用液晶显示器 (LCD)显示波形及参数的系统。它能提供实时、准确、清晰的生理信号波形和主要参数的数字显示。更多还原

【Abstract】 ? The clinical significance of Impedance rheogram has been verified in examining cardiac function, diagnosing diseases of circulation systems. The paper presents a new 2-channel impedance rheography. It uses a common constant current source which supplies current to the two channels in turn by rapid exchange. This prevents from confusion and interferes between two current sources, and constructs a real two-channel rheography. The rheography can output two parameters of impedance and admittance. This is convenient for doctor to select use two parameters according to different application requests or to compare between the two parameters. In the analyzing of rheogram waveform the rheography also includes more formulas to calculate rheogram parameters and can analyze rheogram of heart, brain, lung, liver, kidney and limbs and so on, print relative reports. In addition, the rheography has the capability to extend its function of analyzing and case management. 〔更多还原