无线医疗通信系统中电磁干扰问题的研究

无线通信系统在电子医疗中的应用受到广泛关注,其无线传输方式极大的提高了医疗服务的实时性、移动性和灵活性,同时提升了医疗资源的利用效率。然而无线传输会造成对其他电子医疗设备的电磁干扰,使其自动重启、关闭、波形失真等。针对这一问题,首先对无线医疗通信系统进行建模与分析,定量分析无线医疗通信系统对其他医疗设备的干扰,并在此基础上提出一种基于电磁干扰避免的无线接入协议。同传统的IEEE 802.11无线接入方式相比较,仿真结果表明文章提出的无线接入方法在牺牲一部分通信性能的情况下,可以有效的降低对其他医疗设备的干扰概率。

Research on Electromagnetic Interference Problem in Wireless Medical Communication System

Application of wireless communication system for electronic medical treatment has drawn wide public concern and it improves the real-time property,mobility and flexibility in health service as well as the efficiency of medical resources.However,the wireless communications can cause electromagnetic interference to other electronic equipments,which leads to automatic shutdown,automatic restart and wave distortion,etc.In order to solve this problem,this paper firstly constructs the model of wireless medical communication system and makes a quantitative analysis to the electromagnetic interence to other medical equipments.Consequently a wireless access scheme based on electromagnetic interference avoidance is proposed.Simulation results show that the proposed scheme can effectively avoid electromagnetic interference to other electronic equipments by sacrificing some performance of communication system.