北京生物医学工程

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：李华宝谭慧玲何爱军

单位：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)

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：

出版年·卷·期（页码）：2012·31·2（196-199）

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 consist 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.

参考文献：

［1］丁蔚.人体运动电生理信号检测与处理［D］.苏州:苏州大学,2010.
［2］郑小林,郑尔信,彭承琳.集成运算放大器在检测微弱生理信号中的一种用法［J］.生物医学工程学杂志，1987,4(4)：248-250.
Zheng XL，Zheng EX，Peng CL.A method of detecting low-level physiological signals by the use of operational amplifier ［J］.Journal of Biomedical Engineering，1987,4(4)：248-250.
［3］吕英俊,杨雪.微弱生理信号在多通道数据采集系统中的研究与实现［J］.微计算机信息,2005,21(9)：110-112.
Lu YJ，Yang X. The Research and Design of Multichannel Collection System for Feeble Physiology Signals［J］.Control & Automation，2005，21(9);110-112.
［4］Fatfs module application note \[EB/OL\]. \[2011-09-06\].http://elm-chan.org/fsw/ff/00index_e.html.
［5］任哲.嵌入式实时操作系统μC/OS-II原理及应用［M］.北京：北京航空航天大学出版社，2005:184-245.
Ren Z.Qianrushi Shishi Caozhuo Xitong C/ OS-ⅡYuanli Ji Yingyong［M］.Beijing：Beihang University Press，2005：184-245.
［6］周航慈，吴光文.基于嵌入式实时操作系统的程序设计技术［M］.北京：北京航空航天大学出版社，2006:35-44.
Zhou CH，Wu GW.Jiyu Qianrushi Shishi Caozuo Xitongde Chengxu Sheji Jishu［M］.Beijing：Beihang University Press，2006：35-44.
［7］李备,彭楚武,谭凌峰,等.UCOS移植中的硬件抽象层构建技术［J］.电子产品世界,2006(16)：93-94，92.
Li B，Peng CW，Tan LF，et al.Building Hardware Application Layer in UCOS Transplanting ［J］.Electronic Engineering & Product World，2006(16 )：93-94,92.
［8］John Catsoulis.嵌入式硬件设计［M］.徐君明，许铁军,黄年松,等译.北京：中国电力出版社，2004：216-245.
Catsoulis J.Qianrushi Yingjian Sheji［M］.Xu JM,Xu TJ，Huang NS，et al，translation.Beijing： China Electric Power Press，2004：216-245.

服务与反馈：

【文章下载】【加入收藏】

提示：您还未登录，请登录！点此登录