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家庭心电远程临护系统的研究
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摘要
本课题介绍了一种家庭心电远程监护系统。
     系统由五部分组成:心电检测单元,单片机控制及A/D转换单元,家庭无线传输单元,家庭嵌入式网关及医院数据管理单元。
     心电检测单元以低功耗,高精度,高集成度,抗干扰性为设计目标。完成心电信号的放大功能。
     单片机采用了TI公司的超低功耗MSP430F149,利用其内带的12位A/D和串行口来完成A/D转换及数据通讯。同时利用其内带的硬件乘法器进行数字滤波。
     无线传输单元以高可靠性,调试简单性,模块化设计为目标,采用了集成无线传输模块PTR2000,完成心电信号从单片机传送到家庭网关的功能。
     家庭网关由Linux嵌入式系统来完成,它可以作为家庭信息化的平台,扩展后可以连接其他家庭监护单元。
     简略介绍了医院接收端的数据管理。
     抗干扰是家庭心电监护系统必须考虑的因素。分析了手机对心电检测的影响及消除办法。重点介绍了自适应滤波的效果。
An ECG telemonitoring system based on Internet is proposed in this paper.
    The system consists of five units: ECG monitor, Microcontroller and A/D converter, Home network gateway and Medical information management.
    ECG monitor has the function of ECG signal amplification. In which low power consuming, high accuracy, high integration and anti-interference play a great role in the design.
    Microcontroller MSP430 F149 (Texas Instrumentation Corporation) has embedded a 12bit A/D converter, two UART interfaces for local communication and a hardware multiplier for digital filtering.
    Wireless communication module PTR2000 has the characteristic of high reliability, easy to testing, and has the function of transmission ECG data from microcontroller to home network gateway.
    Home network gateway is an interface between home network and Internet, which can be extended to connect other home health care monitor system than ECG monitor. In this unit, Linux embedded system has been applied.
    Medical information management has also been introduced in brief in the paper.
    Anti-interference is an important consideration in ECG telemonitoring system. It is the result of our experiences that mobile phone can cause serious interference in ECG monitoring. In order to reduce this interference, several methods have been proposed and tested, in which adaptive filter is more abstractive.
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