气压与心电相关数据采集系统的设计  

Design of Air Pressure and ECG Signals Acquisition System

作　　者：曾鹤琼[1] 陈亚光[1] 

机构地区：[1]中南民族大学电子信息工程学院,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2008年第2期82-85,共4页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(30370393)

摘　　要：设计了一种气压与心电同步数据采集系统.利用该系统对气压和心电信号进行长时间同步采集,揭示了气压变化与心电信号之间的对应关系.为满足系统低功耗的需要,通过对MSP430F149以及外围电路的分析,分别给出软硬件解决方法;另一方面,为方便地进行存储容量的扩展,系统采用了读写速度快、功耗低的低电压外部数据存储器SD/MMC卡存储信号,对信号不做任何的压缩处理,可保证信号的保真度.We develop a data acquisition system, by which, we can collect air pressure and ECG signals synchronously in order to reveal the relationship between air pressure and ECG signals. When we have analysed the MSP430F149 and its peripheral circuits, software and hardware solutions are developed in order to meet the low power consumption needs. On the other hand, for the convenience of storage expansion, this system uses SD/ MMC card for data storing, which has characteristics of fast speed of r/w, low power consumption, and none of the compression methods is applieated to stored signal for the sake of high fidelity.

关 键 词：气压 心电 MSP430F149微控单元 SD/MMC卡 FAT16文件系统 

分 类 号：TP891[自动化与计算机技术—检测技术与自动化装置]