摘要
目的:本文利用智能手机平台设计并实现了一个基于蓝牙传输功能的便携式心电监护系统。方法:整个系统分为心电采集模块和用于心电显示与处理的手机模块。心电采集模块以MSP430单片机为核心,完成心电信号的拾取、放大和滤波、A/D转换和蓝牙发送功能。利用JAVA编程并运行在智能手机平台上的心电监护程序接收心电蓝牙信号并实现了心电实时显示、消噪、心率计算、存储、报警等功能。本文分别通过中值滤波和陷波滤波器方法消除心电信号的漂移噪声和50Hz工频干扰;采用长度法快速定位R波并实时计算出心率,该方法实现简单、速度快、抗干扰能力强、准确率高。结果:本文设计并实现了心电采集模块的硬件电路和软件程序,编写了运行在Android系统手机上的心电监护应用程序,心电采集模块和手机之间通过蓝牙无线方式传输心电数据。系统通过心电电极拾取人体心电信号并最终实时显示在手机上,自动分析功能能实时消除噪声并准确计算出心率,当心率超出设定范围时系统能驱动铃声报警并保存异常数据段。整个系统运行时有很好的实时性和较好的稳定性。结论:该系统轻便小巧、功耗低、操作简单。系统的实现将为以手机及其他移动设备为平台的人体生理信息监护系统的产品化带来很好的启发,促进医疗监护进入移动计算时代。
Objective： We developed a portable ECG monitoring system with wireless transmission technology. Methods： The ECG acquisition module, which uses the MSP430 chip as the core, gathers and amplifies the ECG signals, eliminates noises, converts to digital signals and then sends by bluetooth. The ECG monitoring program rtmning on the smartphone receives the ECG signals and displays them on the phone surface in real time. It also calculates heart rates, stores in files and alarms with abnormal ECG. In data processing, we used median filtering to eliminate signal drift and applied a notch filter to remove noise of power-line interference at 50Hz. Then we applied a length transform method on ECG sections to quickly locate R waves and calculate heart rate in time. Results： We designed and completed the hardware circuit board and SOftware programs of ECG acquisition module. We also programmed ECG monitoring applications whid＇l can run on a android mobile phone. The ECG signals are transmitted from ECG acquisition module to the mobile phone by bluetooth. The system picks up human ECG signals through electrodes and then displays them on the phone surface finally. The monitoring program can eliminate noises clearly and calculate the heart rate accurately in real time, and drive the bell alarm and saving the abnormal data segment when the heart rate exceeds the scope. The whole system runs smoothly with good real-time performance and stability. Conclusions： The system has features of small volume, low power consumption and simple operation. The implementation of this system will lighten the productization of the mobile human physiological information monitoring system which may be based on a smartphone or other mobile devices. It will promote mobile computing in health care area.
出处
《中国医学物理学杂志》
CSCD
2013年第4期4303-4306,共4页
Chinese Journal of Medical Physics
关键词
心电监护
蓝牙
手机
ECG monitor
bluetooth
mobile phone
