摘要
为实现心脏起搏器工作状况与电池电量的远程在线监测,提出了基于AM9和嵌入式Linux的移动无线监测终端解决方案;针对起搏心电信息在信号采集质量、数据处理能力等方面的要求,以S3C2440作为终端核心控制模块,并对高速数据采集、GPRS无线传输、电池供电模块等进行了详细阐述;在终端软件方面,研究了基于改进LZ77算法的嵌入式起搏心电数据压缩、基于RC5的数据加密和无线传输控制的实现等核心软件技术;并采用QT开发了相应的GUI程序;性能测试表明:该终端设计可实现起搏心电数据的采集、压缩、存储与远程无线传输,延迟时间控制在3s之内,能够满足移动无线远程监测心脏起搏器的需要。
To detect working status and battery power of implantable cardiac pacemakers by remote wireless communication , a solution of mobile telemonitoring terminal based on AM9 and embedded Linux is introduced. The hardware frame of the system which uses S3C2440 as control core and ingrates the high--speed data acquisition, GPRS wireless transmission, and power supply modules is designed to meet the needs of the signal quality and processing ability. To deal with the problem of data processing and Wireless transmission which is derived from the 4k Hz sampling rate of pacing signal, the embedded data compression method for pacing cardiac signals based on improved LZ77 algorithm is studied especially and the data encryption technology based on the RC5 and wireless transmission control strategy is put forward. The QT program is developed to suit interpersonal interaction procedures. The experimental results show that the wireless terminal design can be achieved pacing ECG data acquisition, storage and remote wireless transmission, and can satisfy the mobile wireless monitoring heart pacemak ers need with delay time in 3 seconds.
出处
《计算机测量与控制》
北大核心
2013年第5期1178-1180,共3页
Computer Measurement &Control
基金
重庆市教委科学技术研究资助项目(KJ110813)
重庆市自然科学基金(cstc2011jjA1026)
关键词
嵌入式系统
心脏起搏器
移动无线监护
数据压缩
数据加密
embedded system
cardiac pacemaker
mobile wireless telemonitoring
data compression
data encryption
