摘要
非接触充电技术为实现心脏起博器永久供电提供了可能,其可靠性和抗强电磁场干扰的能力还不能满足医学应用的要求;该文提出了一种基于ZigBee的定位非接触充电技术;该方案在心脏起搏器内安装CC2531无线模块,用来实现定位测距、控制体内充电装置、体温检测等功能,此模块也是起搏器的核心控制器件;在病人房间的墙壁上安装3个CC2531无线模块,用于配合测量内置无线模块的位置;在病人的床板下安装体外供电装置(包含非接触供电电路和1个CC2531无线模块),该模块获取其余模块的测距信息,当测定出内置无线模块进入特定地点,且内置电池欠压时,非接触供电系统并向内置的锂电池启动充电;为了提高内置的受电线圈抵御强电磁场干扰的能力,提高非接触供电系统的可靠性,对非接触供电系统的电磁波特性作了理论阐释,并提出了过压保护的原理,且由此给出了可行的保护电路;仿真与实验证明了以上结论。
Contact--less charging technology to achieve permanently powered cardiac pacemakers provide the possibility, its reliability and strong electromagnetic field disturbance resistant ability doesn＇t meet the requirements of human trials. Therefore this paper proposes a distance measurement contact--less charging based on ZigBee technology. The program selects CC2531 wireless module as a pacemaker control core, the module combines positioning distance, control the charging process, the charging device body, body temperature detection. Install three CC2531 wireless module in the patient＇ s room for inner wireless module＇ s measurement position. Installed outside body-- powered devices under the bed of （including a contact--less power supply circuit and a CC2531 wireless module）, the module for the remaining modules ranging information when measuring the embedded wireless module into specific locations, and the inner battery voltage insufficiency, the contact--less power supply system to the inner lithium battery starts charging. In order to improve the inner coil＇s ability to with stand strong electro--magnetic interference, improve the reliability of power supply system for contact--less, contact--less power supply system of electromagnetic characteristics for a theoretical explanation of the phenomenon, and thus put forward the principle of overvoltage protection, and gives a feasible protection circuit. Simulation and experiments verified these conclusions.
出处
《计算机测量与控制》
2015年第6期2167-2170,2174,共5页
Computer Measurement &Control
基金
国家自然科学基金资助项目(61305106)
河南省教育厅科学技术研究重点项目(14A510010)
郑州市科技局民生科技进步工程资助项目(131PZDGC136)
关键词
非接触充电
定位测距
心脏起搏器
电磁波特性
contact--less charge
positioning range
heart pacemakers
electromagnetic wave properties
