声表面波相关叉指换能器的稀化研究
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- 英文论文题名：Study on the surface acoustic wave sparse correlation inter-digital transducer
- 论文作者：钟悦芸 ; 陈智军 ; 徐海林 ; 夏前亮 ; 陈赵兴
- 英文论文作者：ZHONG Yue-yun ; CHEN Zhi-jun ; XU Hai-lin ; XIA Qian-liang ; CHEN Zhao-xing ; College of Automation Engineering ; Nanjing University of Aeronautics and Astronautics ; No.55 Research Institute ; China Electronics Technology Group Corporation
- 年：2016
- 作者机构：南京航空航天大学自动化学院;中国电子科技集团第五十五研究所;
- 论文关键词：声表面波 ; 相关叉指换能器 ; 巴克码 ; 有限元分析
- 英文论文关键词：surface acoustic wave ; correlation inter-digital transducer ; barker code ; finite element analysis
- 会议召开时间：2016-08-21
- 会议录名称：2016’中国西部声学学术交流会论文集
- 语种：中文
- 分类号：TN65
- 学会代码：SXJS
- 会议名称：2016’中国西部声学学术交流会
- 会议地点：中国四川成都
- 主办单位：中国声学学会微声学分会、中国声学学会物理声学分会、陕西省声学学会、浙江省声学学会、山东省声学学会、上海市声学学会、黑龙江省声学学会、水声技术重点实验室、重庆市声学学会、西安市声学学会、四川省声学学会
- 学会名称：《声学技术》编辑部
- 页数：4
- 文件大小：594k
- 原文格式：D
- 会议级别：全国
摘要
为了实现声表面波射频识别系统的大规模应用,必须解决标签的大容量及防碰撞问题。由于基于相关原理的相关叉指换能器,仅在与之匹配的查询信号激励下产生自相关响应,因此将其应用于声表面波标签时,可为解决上述问题提供新思路。而为使相关叉指换能器获得良好的自相关响应,需对其叉指稀化情况进行研究。由此,根据声表面波相关叉指换能器原理,在有限元仿真软件COMSOL中建立了其仿真模型,研究了其在不同稀化情况下自相关响应的优良,并最终分析得到:采用连续稀化方式、稀化程度大于等于50%的相关叉指换能器,可获得良好的自相关响应,这为其应用于声表面波标签奠定了良好的基础。
For large-scale application of the Surface Acoustic Wave Radio Frequency Identification(SAW RFID) system, it is required to solve the large-volume problem and anti-collision problem of the SAW tags. The correlation inter-digital transducer(CIDT) based on correlation theory only response to the corresponding interrogate signal, called auto-correlation response, which puts forwards some new ideas for solving the above problems. In order to achieve good auto-correlation response, it is necessary to study the sparse CIDT. Thus, a simulation model based on the principle of the CIDT is established by the finite element analysis software COMSOL. By utilizing the model, we study the auto-correlation responses of the CIDT with different sparse degrees and different sparse structures, respectively. Finally, we propose a design of the CIDT whose sparse degree is equal or greater than 50% with continuous sparse structure to obtain a good auto-correlation response through analyzing the simulation results, which lays a good foundation for the CIDT implementing to the SAW tags.
For large-scale application of the Surface Acoustic Wave Radio Frequency Identification(SAW RFID) system, it is required to solve the large-volume problem and anti-collision problem of the SAW tags. The correlation inter-digital transducer(CIDT) based on correlation theory only response to the corresponding interrogate signal, called auto-correlation response, which puts forwards some new ideas for solving the above problems. In order to achieve good auto-correlation response, it is necessary to study the sparse CIDT. Thus, a simulation model based on the principle of the CIDT is established by the finite element analysis software COMSOL. By utilizing the model, we study the auto-correlation responses of the CIDT with different sparse degrees and different sparse structures, respectively. Finally, we propose a design of the CIDT whose sparse degree is equal or greater than 50% with continuous sparse structure to obtain a good auto-correlation response through analyzing the simulation results, which lays a good foundation for the CIDT implementing to the SAW tags.
引文
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[8]Zhong Y,Chen Z,Wang X,et al.Anti-collision SAW tags based on CIDT[C]//Piezoelectricity,Acoustic Waves,and Device Applications(SPAWDA),2015 Symposium on.IEEE,2015:137-142.
[2]Chen F,Mao J.The Development and Applications of SAW RFID Technology[C].Advanced Materials Research.2014,945:2358-2362.
[3]Brown P,Hartmann P,Schellhase A,et al.Asset Tracking on the International Space Station Using Global SAW Tag RFID Technology.[C]//IEEE,AIAA IEEE Ultrasonics Symposium.2007.
[4]卢旭.声表面波射频识别研究[D].南京:南京航空航天大学,2012.
[5]Bruckner G,Fachberger R.SAW ID tag for industrial application with large data capacity and anti-collision capability[C]//Ultrasonics Symposium,2008.IUS 2008.IEEE.IEEE,2008:300-303.
[6]Hartmann C,Hartmann P,Brown P,et al.Anti-collision methods for global SAW RFID tag systems[C]//Ultrasonics Symposium,2004 IEEE.IEEE,2004,2:805-808.
[7]Huang X,Chen ZJ,Wang MY,et al.Large capacity SAW Tag.In:European Frequency and Time Forum&International Frequency Control Symposium(EFTF/IFC),2013,pp.779-782.
[8]Zhong Y,Chen Z,Wang X,et al.Anti-collision SAW tags based on CIDT[C]//Piezoelectricity,Acoustic Waves,and Device Applications(SPAWDA),2015 Symposium on.IEEE,2015:137-142.