一种低功耗微弱生理信号检测系统的设计  

Weak physiological signal detection system with low power consumption

作　　者：李华宝[1] 谭慧玲[1] 何爱军[1] 

机构地区：[1]南京大学电子科学与工程学院生物医学工程研究所,南京210093

出　　处：《北京生物医学工程》2012年第2期196-199,共4页Beijing Biomedical Engineering

基　　金：国家自然科学基金(60701002;61071004);中央高校基本科研基金(1106021034)资助

摘　　要：目的电生理信号可以提供人体各种生理状态的重要信息,它常常需要长时间的监测,因此要求检测系统具有低功耗特性。本文设计一种基于MSP430F5438处理器的微弱生理信号检测系统,并重点关注其功耗、可靠性和测量精度。方法系统包括高性能模拟放大前端、低功耗下位机和对上传的信号进行多种处理的PC机。下位机采用MSP430F5438单片机,它具有功耗低、体积小优点,它移植有UCOS&UCGUI系统,方便储存和处理数据。PC机可以通过USB方便地连接下位机并处理数据。结果系统可开发成电池供电的便携式检测储存装置,其特色是低功耗和便携性,这有助于长时间检测电生理信号。结论微弱生理信号检测与处理作为一个系统工程,在医疗保健和研究方面有广大的应用前景。Objective The electrophysiological signals reflect the important physiological information of human body. Because physiological signal often takes a long time to measure,it require the detection system with low power consumption. This paper designs a weak physiological signal detection system based on MCU MSP430F5438 ,and focuses on its power consumption,reliability and accuracy. Methods The system is eonsist of a high-performance analog amplifier, the lower part of the machine with low power consumption and a PC computer for processing the information. The lower part of the system uses MSP430F5438 single chip, with the advantages of low power consumption and small size. The MSP430F5438 single chip is transplanted with UCOS ＆ UCGUI system to facilitate the storage and process the data. The PC computer can connect the lower part of the machine easily via USB and process the data. Results The system can be developed into a battery-powered portable storage and detection device, with characteristic of low power consumption and portability, which helps to detect electrophysiological signals for a long time. Conclusions Application prospects of the weak physiological signal detection system as a project is bright in medical care and research.

关 键 词：电生理信号 检测系统 低功耗 放大电路 MSP430 UCOS&UCGUI 

分 类 号：R318.04[医药卫生—生物医学工程] R318.6[医药卫生—基础医学]