复杂医疗环境下的电磁隐患检测仪设计  

作　　者：陈雨羲[1] 汤中旭[1] 魏来[1] 曾珂[1] 田荷莲[1] 张俊然[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《数字技术与应用》2012年第8期118-120,共3页Digital Technology & Application

基　　金：四川大学大学生创新基金"20120275"资助

摘　　要：电磁信号对医疗设备的正常工作会有不同程度的影响,对床旁、植入式等医疗仪器的影响直接关系到患者的人身安全,严重时甚至危及人的生命。复杂医疗环境下的电磁干扰隐患检测仪利用嵌入式控制器控制无线收发芯片探测影响医疗设备的频段,实现对可能干扰医疗仪器正常工作的电磁信号进行检测。该设计采用宽谱信号无线收发芯片-nRF903和模数信号转换芯片-AD8318,利用FL2440开发板控制两个芯片的工作模式,将接收到的电磁信号与安全阈值进行比较,判断是否超出安全范围;并进行了对干扰源距离测定和定位的尝试。electromagnetic signal has the influence of different level on the normal work of medical equipment. The effect on patient＇s bedside, implantable medical instruments is directly related to the personal safety,and it could endanger human lives,even when serious. This kind of detector use embedded controller to control wireless transceiver chip to receive the frequency range influencing medical equipment, so that detecting the hidden danger of electromagnetic interference （EMI） in the medical environment where people are at.This design use wide spectrum signal wireless transceiver chip- nRF903 and modulus signal conversion chip-AD8318.Development board FL2440 controls the two chips＇work pattern and compare the safety threshold with the detected,determining whether or not to exceed safe limits and trying to measure the distance ofinterferenc source and positioning.

关 键 词：医疗环境 电磁隐患 检测仪 NRF903 AD8318 

分 类 号：TN4[电子电信—微电子学与固体电子学]