一种手持式阻抗血流图检测系统的设计

摘要

本文介绍了一种手持式阻抗血流图检测系统的设计过程。该系统基于生物阻抗法，利用数字化的正交序列解调方法保证测量精度，采用模块化的设计方法提高系统的扩展能力，采用低功耗设计和无线数据传输增强系统的灵活性。样机的初步试验证明该系统运行稳定，可以对人体多个部位进行测量，而且具有低功耗和便携的特性。%This paper introduced the design of a bio-impedance-based hand-held IR (Impedance Rheography) detection system. The digital orthogonal sequential demodulation method was used in this system to ensure the accuracy of measurement. Modular design technology was used to increase the extendibility of the system. Low power consumption technology and wireless data transmission were used together to improve the lfexibility of the system. According to the preliminary experiment, the low-power-consumed and portable sample system demonstrated its stable performance and ability to use on different positions of human body.