UHF RFID宽频读写器天线与应用软件设计

发布时间：2018-04-09 06:39

本文选题：读写器天线　切入点：资产管理系统　出处：《大连海事大学》2017年硕士论文

【摘要】：超高频射频识别(UHF RFID)是无线通信领域中的一种自动识别技术,被广泛的应用在制造业、物流管理和资产管理等行业。读写器天线、系统应用软件、实际应用中的硬件布局以及数据处理,作为UHF RFID系统中的重要组成部分,现在受到越来越多的关注。现在国内外UHF RFID系统研究趋势主要为以下几个方面:(1)系统的标准趋于统一化,各国各地区都在积极的进行工作频段与系统的兼容;(2)读写器天线应尽可能覆盖全球各国UHF RFID的工作频段,同时要求带宽更宽,增益更高、成本更低,并且结构简单易于加工等;(3)应用软件设计要更加科学化、智能化,使系统工作的效率、工作距离、保密性能等得到更大的提升;(4)针对不同的应用环境采取不同的硬件与软件系统,以及不同的硬件布局,使UHF RFID技术在该场合的性能达到最佳。本文依托大连海事大学天线微波研究所的国家级电子信息技术实验教学中心建设项目《基于UHF RFID的实验室设备管理系统的设计与优化》,对RFID技术的读写器天线、应用软件和系统布局进行了开发与研究。完成的工作主要包括以下几个方面:(1)提出了相移90度的改进T型功分器双馈电叠层结构,设计了一款适用于全球的UHF RFID系统的圆极化读写器天线。阐述了叠层天线各部分尺寸的确定过程及调整方法,分析了相移段修改为阻抗不同的两段后对天线性能的影响,并分析了在不同位置引入矩形调谐片后对天线的匹配性能的影响。为了满足手持端的天线应用需求,本文还设计了地板开槽的小型、圆极化读写器天线。(2)基于RFID技术开发了实验室资产管理系统。采用PC端和网络端以及手持端相结合的方式,在资产管理软件的基本功能基础上,实现了资产一键快速盘点、资产流动声像监控、缺失资产准确定位等功能。(3)详细分析了影响无源UHF RFID标签阅读距离的因素,并根据实验室的实际应用环境同时综合考虑影响系统读写距离的因素后,对大连海事大学微波技术实验室RFID读写器天线的布局进行了优化设计。
[Abstract]:UHF radio frequency identification (UHF) is an automatic identification technology in the field of wireless communication, which is widely used in manufacturing, logistics management and asset management industries.As an important part of UHF RFID system, reader antenna, system application software, hardware layout and data processing in practical application are paid more and more attention.At present, the research trend of UHF RFID system at home and abroad is mainly as follows: 1) the standards of the system tend to be unified.The reader antenna should cover the working frequency band of the global UHF RFID as far as possible, and at the same time require wider bandwidth, higher gain and lower cost.And simple and easy to process, etc.) the application software design should be more scientific, intelligent, so that the system work efficiency, working distance,For different application environments, different hardware and software systems, as well as different hardware layouts, are adopted to achieve the best performance of UHF RFID technology in this field.This paper relies on the project "Design and Optimization of Laboratory equipment Management system based on UHF RFID" of the National Electronic Information Technology Experimental Teaching Center of the Institute of Antenna and Microwave of Dalian Maritime University, and the reader antenna of RFID technology.Application software and system layout are developed and studied.The main work of this paper includes the following aspects: 1) an improved T type power divider double-fed laminated structure with a phase shift of 90 degrees is proposed, and a circular polarization reader antenna suitable for the global UHF RFID system is designed.In this paper, the process of determining the size of each part of the laminated antenna and its adjustment method are described. The effect of the phase shift section modified to two segments with different impedance on the antenna performance is analyzed.The effect of rectangular tunable on antenna matching performance is analyzed.In order to meet the application requirements of hand-held antenna, this paper also designs a small, circular polarization reader antenna based on RFID technology to develop a laboratory asset management system.Based on the basic functions of the asset management software, the system combines PC, network and handheld to realize the quick inventory of assets and the sound and video monitoring of asset flow.This paper analyzes in detail the factors that affect the reading distance of passive UHF RFID tags, and synthetically considers the factors that affect the reading distance of the system according to the actual application environment of the laboratory.The layout of RFID reader antenna in Microwave Technology Laboratory of Dalian Maritime University is optimized.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN822;TP391.44

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