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首先介绍了射频识别技术,然后具体探讨了射频识别技术在电力企业人员及设备智能安全管理系统中的应用,最后展望了RFID技术在电力系统安全管理中的应用前景。本文针对目前电力系统行业安全管理存在的问题,利用射频识别(RFID)技术、数据库管理技术和计算机网络技术相结合提出了一种新的解决方案。 相似文献
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RFID(射频识别技术)通过应用集成电路技术,识别技术、计算机通信技术以等,专门读写器和载体上的(RFID)卡,组成了RFID系统,以此对载体进行非接触的识别和数据交换.由于这种便利性,目前RFID已经在智能交通管理领域广泛地应用,本文简单介绍了RFID系统及原理,并对智能应用案例进行了介绍. 相似文献
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随着射频识别技术研究的迅速发展,寻求具有尺寸缩减特性的天线结构成为RFID设计的实际需要,Hilbert分形结构是天线小型化设计的一种有效解决方案.本文论述了Hilbert分形天线的基本原理,对弯折偶极子天线采用Hilbea分形结构进行小型化设计,并对实物进行仿真.经测试与仿真后结果表明:标签天线尺寸约为25.6mm*16.2mm,工作在中心频率915MHz处,增益达到2.19dB,相对阻抗带宽为90MHz.天线能保持较好的工作性能,可应用于酒瓶盖防伪RFID标签中. 相似文献
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近些年来,RFID即射频识别技术日益得到人们的广泛关注,而且该技术已经在很多应用领域中取得了成功,譬如在常见的物流、防伪等领域的应用。RFID技术的应用在很大程度上提高了相关行业的工作质量和工作效率。本文从RFID的概述谈起,详细介绍了RFID网络数据清理技术,就RFID网络数据清理技术的实践应用进行了全面的分析。 相似文献
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随着物联网技术的发展,无线传感器网络和RFID网络的融合技术渐渐成为一个热点的研究问题.通过将无线传感器网络的环境感知能力和RFID的物体识别定位能力结合起来的异构网络能极大的增强人们获取信息的全面性.在本文中,我们提出了一种基于WSN和RFID的异构网络的构建方法.该方法将无线传感器网络的环境感知能力和射频标签的物体识别能力结合起来,极大的提高了人们获取信息的全面性. 相似文献
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Broadband RFID tag antenna with capacitively coupled structure 总被引:2,自引:0,他引:2
In contrast to the inductively coupled structure published earlier, a capacitively coupled structure in designing broadband radio frequency identification (RFID) tag antennas for the UHF band is investigated. The proposed structure not only successfully widens the tag operating bandwidth but also enjoys better radiation efficiency than its inductive counterpart 相似文献
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基于射频识别应用场景中存在的一些T型结构,如楼内、地下矿井等存在的一些T型通道,为做好这些场景中的信号覆盖,本文提出了一种新颖的边射端射可重构的RFID阅读器天线。天线由可重构的馈电网络和两个相距半波长的偶极子组成,天线边射和双向端射的可重构特性通过控制馈电网络中的开关状态实现。为了验证天线性能,对其进行了加工测试。测试结果表明,天线在边射和端射状态下的阻抗带宽和增益分别为2.7%(900~925 MHz),4.15 dBi和1.9%(905~923 MHz),2.10 dBi,与仿真结果基本一致。该天线具有结构简单、小型化、低剖面等优势,在射频识别系统中有一定的应用价值。 相似文献
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A folded slot is introduced to expand the impedance bandwidth and miniaturise the size of a coplanar waveguide (CPW)-fed patch monopole antenna for radio frequency identification (RFID) applications. The designed antenna, which, including ground plane, is only 13 mm in height and 11 mm in width, can operate at the 5.8 GHz band with measured impedance bandwidth and average antenna gain of 30% and /spl ges/5 dBi, respectively, and also conical radiation patterns. These properties make the antenna suitable for RFID tags. 相似文献
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A circularly polarized, broad bandwidth, square-ring patch antenna for radio-frequency identification (RFID) is proposed. The antenna has a dimension of 100 × 100 × 22.9 mm3. By using a Wilkinson power divider and a patch-antenna structure, a measured 3-dB axial-ratio bandwidth of approximately 140 MHz (16.47%), an impedance bandwidth of 136 MHz (15.81%), and a measured peak gain of approximately 6.8 dBic are being achieved. The operating band of the proposed antenna is suitable for China (840–846 MHz), Europe (865–868 MHz) and the United States (902–928 MHz) ultra-high frequency (UHF) RFID applications. 相似文献
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A novel reader loop-type antenna for ultra-high-frequency (UHF) near-field radio frequency identification (RFID) applications is presented. This antenna, printed on a 0.8 mm-thick FR4 substrate with a diameter of 16 cm, is composed of four curved strips and four pairs of coupled stubs, and achieves a wide impedance bandwidth from 840 to 1300 MHz. The proposed structure can make large currents along the loop so that a strong and uniform magnetic field distribution is excited in the region around the antenna. Measurements show that the antenna operating with a commercial reader demonstrates good performance of tag identification with inductive coupling for near-field RFID applications. 相似文献
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Ahmed Wasif Reza Tan Kim Geok Kiew Joh Chia Kaharudin Dimyati 《Wireless Personal Communications》2011,59(4):689-711
Transponder collision problem can be significant when a large number of RFID (radio frequency identification) transponders
exist in field. Most existing anti-collision algorithms can solve this problem. However, problem arises when all or part of
these transponders are having identical UID (unique identification). This paper proposes a new transponder collision control
algorithm to overcome overlapping that occurs among transponders with identical UID in RFID large scale deployment (e.g.,
in a large warehouse), so that the RFID reader can successfully identify the quantity of transponders for each particular
UID with high identification accuracy. The proposed anti-collision algorithm adopts a modified version of frequency domain
method by adding stochastic delays in time domain. The obtained results show that the proposed method can achieve optimum
frequency bandwidth utilization and at the same time poses high identification accuracy (almost 100%) with low identification
delay. 相似文献
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《Electronics letters》2008,44(20):1173-1174
A broadband ultra-high frequency radio frequency identification (UHF RFID) tag patch antenna with a pair of U slots is presented. By embedding a pair of U slots on the patch, a new resonant mode adjacent to the origin mode is excited and a broadband characteristic is achieved. The measured half-power bandwidth of the proposed antenna is 133 MHz and it covers all UHF RFID frequency bands. Measurement results show that the proposed antenna can work on metallic objects of different sizes in both North America and Europe bands. 相似文献