摘要
提出了一种用于处理光电容积脉搏波信号的集成电路结构,将主要应用于可穿戴式多生理参数检测,例如血压、血氧、心率等。电路包括直流、交流分量分离电路,直流分量读出电路,低通滤波器,以及矩形波产生电路。直流、交流分量分离电路由跨阻放大器和金属氧化物半导体晶体管-双极晶体管(MOS-Bipolar)虚拟电阻构成,可以实现0.07-0.7 Hz的高通截止频率;低通滤波器可以实现16 Hz的低通截止频率。电路采用标准0.13μm CMOS工艺设计,电源电压1.2 V。
The paper presents an integrated circuit for photoplethysmography （PPG） signal processing, which can process direct current （DC） and alternating current（AC） components separately. It can be used in wearable devices for detection of the PPG-based multiphysiological parameters, such as heart rate, blood pressure and pulse oxygen saturation（SpO2）. The proposed circuit consists of an AC and DC component separation part, a DC read-out part, a low-pass filter and a rectangular wave generator. A lower-band cutoff frequency of 0.07-0.7 Hz is provided by the AC and DC separation part, which is a transimpedance amplifier with a MOSBipolar resistor based integrator in the feedback loop. An upper-band cutoff frequency of 16 Hz is achieved by using a currentsteering filter. The circuit is implemented in UMC 0.13 μm CMOS technology with 1.2 V supply voltage.
出处
《电子技术应用》
北大核心
2016年第11期18-21,共4页
Application of Electronic Technique
基金
国家自然科学青年基金(61204037)
北京市教委科研计划面上项目(KM201511232019)
关键词
光电容积脉搏波
集成电路
可穿戴式
多生理参数检测
photoplethysmography
integrated circuit
wearable devices
multi-physiological parameters detection
