摘要
主要介绍在基于近红外光谱法的无创血糖检测中对微弱信号采集的研究及相关电路设计的工作原理,此设计基于CYPRESS公司的PSoC 5LP,通过对光电二极管采集信号的滤波,然后经过PSoC 5LP内部可编程增益放大器放大,再通过模拟定序复用器将多路信号送入A/D转换器进行转换,从而获得较为准确、稳定的电信号用于后期处理。
This paper mainly introduces the research of collecting weak signal based on non-invasive bloodred spectroscopy and the operating princijDle of tlie relevant circuit design. This design is based on PSoC LP controller,and the colletced weak signal is transfered to ADC after filtered by RC filter and amplified by programmable gain amplifier. The signal is processed on PSoC LP,then the electrical signal will be used in the further analysis.
出处
《微型机与应用》
2016年第18期32-34,共3页
Microcomputer & Its Applications
基金
国家级大学生创新项目(201410255043)
关键词
血糖检测
近红外光谱
微弱信号采集
可编程片上系统
blood glucose monitoring
near infrared spectrum
weak signal acquisition
programmable system on chip
