本文關(guān)鍵詞： 植入式系統(tǒng) 無線遙測 低功耗 PPM調(diào)制　出處：《浙江大學》2012年碩士論文　論文類型：學位論文

【摘要】：植入式無線遙測系統(tǒng)是一種埋置在動物體內(nèi)的電子設(shè)備,用來測量生命體內(nèi)的生理、生化參數(shù)的長期變化與診斷、治療某些疾病。植入式無線遙測系統(tǒng)可獲得被測動物在無限制狀態(tài)下的生理數(shù)據(jù),適合長期測量。 植入子的體積、重量、功耗是植入式系統(tǒng)的關(guān)鍵指標,數(shù)字無線通信方案功耗過大,FM/AM等模擬通信方案連續(xù)載波發(fā)射功耗較大,目前該領(lǐng)域尚無現(xiàn)成的電子電路解決方案。 論文設(shè)計了一套用于大鼠生理參數(shù)監(jiān)測的植入式無線遙測系統(tǒng)。采用多通道脈沖位置調(diào)制原理(PPM),在功耗和體積限制下實現(xiàn)了多路信號實時、連續(xù)調(diào)制,通過L-C共振天線設(shè)計,提高了發(fā)射能量。 論文主要研究工作如下： 1對設(shè)計方案進行電路仿真分析、調(diào)試優(yōu)化,得到了整套電路最佳參數(shù),實現(xiàn)了兩通道測量系統(tǒng)(一路心電,一路溫度)電流消耗僅34uA。 2設(shè)計了植入電路的各種分割(方形、圓形)以及封裝形式(圓柱形、長方體),實現(xiàn)了兩通道系統(tǒng)(一路心電,一路溫度)體積僅為1.8cm3。 3設(shè)計了整套接收電路以及PC顯示軟件,對整套系統(tǒng)進行聯(lián)合調(diào)試,得到系統(tǒng)性能參數(shù)和技術(shù)指標。 通過8只雄性SD大鼠體內(nèi)外實驗,表明系統(tǒng)可以連續(xù)測量心電、體溫等信號,且在高頻段比國外同類產(chǎn)品效果更優(yōu)。采用兩節(jié)紐扣電池RENATA395供電,系統(tǒng)持續(xù)工作時間達78天,滿足使用需求。
[Abstract]:The implanted wireless telemetry system is an electronic device embedded in the body of an animal to measure the long-term changes and diagnoses of physiological and biochemical parameters in the body of life. To treat certain diseases. Implantable wireless telemetry system can obtain physiological data of tested animals in unrestricted state, which is suitable for long-term measurement. The volume, weight and power consumption of implants are the key indexes of implantable systems. The power consumption of analog communication schemes such as FM / AM is high, and there is no existing electronic circuit solution in this field. In this paper, an implantable wireless telemetry system for monitoring physiological parameters of rats is designed. The principle of multi-channel pulse position modulation (PPMN) is used to realize real-time and continuous modulation of multi-channel signals under the limitation of power consumption and volume, and the design of LC-resonant antenna is used. The emission energy is increased. The main research work of this thesis is as follows:. The results are as follows: (1) the circuit simulation analysis, debugging and optimization of the design scheme are carried out, and the optimal parameters of the whole circuit are obtained. The current consumption of the two-channel measuring system (one ECG, one temperature) is only 34uA. (2) various splits (square, round) and encapsulation (cylindrical, cuboid) of the implanted circuit are designed, and the volume of the two-channel system (one ECG, one temperature) is only 1.8 cm ~ (3). 3. A complete set of receiving circuit and PC display software are designed, and the system performance parameters and technical specifications are obtained by joint debugging of the whole system. In vitro and in vivo experiments in 8 male SD rats showed that the system could continuously measure ECG, body temperature and other signals, and had a better effect in high frequency range than that of similar products in foreign countries. Two button batteries were used to supply the power supply, and the system lasted for 78 days. Meet the needs of use.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：R318.6

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本文編號：1520021