Optimum Design of Pre-Amplifier in NIR Non-Invasive Measurement
Xu Min · Journal of Transcluction Technology · 2005
To improve the signal noise ratio,the noise of preamplifier in optical measurement system,I-V convert circuit.was modeled.Effect of the noise sources on system was theoretically analyzed and an optimization object function was constructed.This optimization object function was applied to the blood oxygen saturation measurement system and a higher signal-noise ratio was achieved.