微型传感器能量自捕获电源系统研究
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摘要
本文针对低功耗无线传感器网络中传感器节点采用电池供电而导致整个传感器网络生存周期短的问题,提出了一种高频信号能量自捕获电源的设计方案。分析了环境中电磁能稳定存在的特点,研究了偶极子天线将电磁能转化为电能的响应特性,进行915MHz电磁段偶极子天线结构及制造工艺的研究与设计,并以偶极子天线为核心设计了高频信号能量自捕获电源。实验结果表明能量自捕获电源在自然环境中有效的收集能量,在电磁环境下立即响应,使用1F电容完全蓄电可使传感器全负荷连续发送数据12次,满足无线传感器网络中传感器节点供电的要求。
A power source system is designed for capturing and storaging electromagnetic energy of 915MHz,which can provide the passive low- power sensor nodes continuous power while eliminating the hassle of replacing batteries.
A power source system is designed for capturing and storaging electromagnetic energy of 915MHz,which can provide the passive low- power sensor nodes continuous power while eliminating the hassle of replacing batteries.
引文
[1]胡韬,龙青,孟航.利用环境电磁波为无线传感器节点供电新方案[J].电子科技期刊,2011:1-24.
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[6]H.J.Visser,A.C.F.Reniers,J.A.C.Theeuwes.Ambient RF Energy Scavenging:GSM and WLAN Power Density Measurements.EUMC,2008,ISBN:978-2-87487-006-4:721-724[Z].
[7]A.Georgiadis,G.Andia,A.Collado.Designand Optimization Using Reciprocity Theory and Harmonic Balance Analysis for EM Energy Harvesting.Antennas and Wireless Propagation Letters,2010:444-446[Z].
[8]苏波,李艳秋,于红云,等.基于无线传感器节点的能量管理系统[J].太阳能学报,2009:1070-1072.
[2]江发昌.无线充电传感器网络系统及应用[D].2012:3-18.
[3]Hiroshin,Yoshihirok,Tohrur.Prototype implementation of wireless sensor network using TV broadcast RF energy harvesting[J].UBI,2010:373-374.
[4]M.Arrawatia,M.S.Baghini,G.Kumar.RF Energy Harvesting from Cell Towers in900MHz Band.NCC,2011,ISBN:978-1-61284-090-1:1-5[Z].
[5]D.Bouchouicha,M.Latrach,F.Dupont,L.Ventura,An Experimental Evaluation of Surrounding RF Energy Harvesting Devices.EUMCP,2010,ISBN:978-1-4244-7232-1:1381-1384[Z].
[6]H.J.Visser,A.C.F.Reniers,J.A.C.Theeuwes.Ambient RF Energy Scavenging:GSM and WLAN Power Density Measurements.EUMC,2008,ISBN:978-2-87487-006-4:721-724[Z].
[7]A.Georgiadis,G.Andia,A.Collado.Designand Optimization Using Reciprocity Theory and Harmonic Balance Analysis for EM Energy Harvesting.Antennas and Wireless Propagation Letters,2010:444-446[Z].
[8]苏波,李艳秋,于红云,等.基于无线传感器节点的能量管理系统[J].太阳能学报,2009:1070-1072.