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RFID關(guān)鍵技術(shù)理論的研究

發(fā)布時間:2019-01-17 08:58
【摘要】:近幾年隨著物聯(lián)網(wǎng)的迅猛發(fā)展,射頻識別(Radio Frequency Identification, RFID)技術(shù)作為其關(guān)鍵技術(shù)之一也獲得越來越大的發(fā)展。RFID技術(shù)擁有快速掃描、非接觸識別以及穿透性強(qiáng)等特點,逐漸被廣泛的應(yīng)用于軍事、醫(yī)療、交通、庫存控制以及供應(yīng)鏈管理等各個領(lǐng)域。據(jù)權(quán)威報告統(tǒng)計數(shù)據(jù),2008年全球RFID市場規(guī)模達(dá)到52.5億美元,全球共售出19.7億個標(biāo)簽。RFID發(fā)展已從技術(shù)研發(fā)階段進(jìn)入到應(yīng)用驅(qū)動階段。而在RFID技術(shù)迅猛發(fā)展的同時,很多問題需要解決。因此,本文針對RFID的關(guān)鍵技術(shù)理論展開了研究,主要包括以下兩個方面的內(nèi)容: 有關(guān)標(biāo)簽數(shù)量估計的相關(guān)工作都考慮一個系統(tǒng)中僅部署一個閱讀器。而在實際應(yīng)用的系統(tǒng)中,一個閱讀器很難覆蓋系統(tǒng)中所有的標(biāo)簽。故本文針對在系統(tǒng)中部署多個閱讀器時標(biāo)簽數(shù)量估計問題展開了研究。而在系統(tǒng)中部署多個閱讀器后,標(biāo)簽數(shù)量估計協(xié)議就遇到了重復(fù)計數(shù)的問題,即在閱讀器覆蓋范圍的重疊區(qū)內(nèi)的標(biāo)簽被重復(fù)計數(shù)。本文研究了在部署有多閱讀器的大型RFID系統(tǒng)中怎樣能夠快速估計出標(biāo)簽的數(shù)量。在采用一種精巧的方法消除了重復(fù)計數(shù)問題的基礎(chǔ)上,進(jìn)而提出了一個新穎高效的多閱讀器標(biāo)簽數(shù)量估計協(xié)議(EMR)。 同時,本文也對偽造標(biāo)簽識別這一具有實際意義的問題進(jìn)行了深入研究。在某些領(lǐng)域中尤其在奢侈品管理行業(yè),每件物品都綁定具有唯一序列號的標(biāo)簽用來鑒別商品的真?zhèn)。由于偽造商品不僅給消費(fèi)者帶來了巨大的經(jīng)濟(jì)損失,而且給生產(chǎn)者的品牌帶來了嚴(yán)重的負(fù)面影響。因此如何快速識別偽造商品就成為一件具有實際意義的重要問題,F(xiàn)有相關(guān)算法只能檢測系統(tǒng)中是否存在偽造標(biāo)簽,但是無法準(zhǔn)確識別出系統(tǒng)中所有的偽造標(biāo)簽。本文提出了基于Bloom filter的偽造標(biāo)簽識別協(xié)議(CIP)。在此基礎(chǔ)上,考慮到標(biāo)簽的能量效率,又提出了能量效率更高的增強(qiáng)型偽造標(biāo)簽識別協(xié)議(ECIP)。
[Abstract]:With the rapid development of Internet of things in recent years, radio frequency identification (Radio Frequency Identification, RFID) technology, as one of its key technologies, has gained more and more development. RFID technology has the characteristics of fast scanning, non-contact identification and strong penetration. It has been widely used in military, medical, transportation, inventory control and supply chain management. According to authoritative report statistics, the global RFID market size reached $5.25 billion in 2008, and 1.97 billion labels were sold worldwide. The development of RFID has moved from technology development stage to application driving stage. With the rapid development of RFID technology, many problems need to be solved. Therefore, this paper studies the key technology theory of RFID, including the following two aspects: only one reader is deployed in a system in the related work of tag number estimation. In practical applications, it is difficult for a reader to cover all tags in the system. Therefore, the problem of tag number estimation when deploying multiple readers in the system is studied in this paper. After the deployment of multiple readers in the system, the tag quantity estimation protocol encounters the problem of repeated counting, that is, the label in the overlapping area covered by the reader is repeatedly counted. This paper studies how to quickly estimate the number of tags in a large RFID system with multiple readers. In this paper, a novel and efficient multi-reader tag estimation protocol (EMR). Is proposed on the basis of eliminating the repeated counting problem by using a sophisticated method. At the same time, this paper also carries on the thorough research to the false label recognition which has the practical significance question. In some areas, especially in the luxury management industry, each item is bound to a label with a unique serial number to identify the authenticity of the product. Counterfeit goods not only bring huge economic losses to consumers, but also bring serious negative effects to producers' brands. Therefore, how to quickly identify forged goods has become an important issue of practical significance. The existing algorithms can only detect the existence of forged labels in the system, but can not accurately identify all false labels in the system. In this paper, a forged label recognition protocol (CIP). Based on Bloom filter is proposed. On this basis, considering the energy efficiency of tags, an enhanced forged label recognition protocol (ECIP).) with higher energy efficiency is proposed.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TP391.44

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