基于pc机的生物信号数字同步检测系统的设计与实现

2007 5th Student Conference on Research and Development Pub Date : 2007-12-01 DOI:10.1109/SCORED.2007.4451391

K. B. Gan, E. Zahedi, M.A.B.M. Ali

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引用次数: 5

摘要

基于pc的数字锁相放大器在Labview软件中完全实现，用于测量光电容积脉搏波(PPG)。通过实验对放大器的性能进行了评估，结果表明该系统可以在干扰(环境光)下恢复高达40 dB的信号。该系统可定制后测量孕妇经腹PPG信号，用于胎儿心率检测。

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Design and Implementation of A PC-Based Digital Synchronous Detection System for Biological Signal Measurement

A PC-based digital lock-in amplifier was implemented completely in software (Labview) for photoplethysmograph (PPG) measurement. Experiments carried out to evaluate the performance of the amplifier show that the system can recover the signals up to 40 dB below the interference (ambient light). This system can be customized later to measure the trans-abdominal PPG signal of pregnant women for fetal heart rate detection.

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2007 5th Student Conference on Research and Development

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