eTag系統應用於市區道路之可行性評估研究

目前台灣國道高速公路利用RFID技術導入於ETC電子收費系統(不停車收費系統)後，面臨電子標籤讀取率穩定性的問題，因採單一類型高輸出功率之收費閘門，經過調整校正後，使用ETC電子標籤之車輛也提升趨近於六百萬台車輛，此設置系統現已漸漸純熟，並且降低在高速公路行車中發生回堵之可能性，而在往後市區道路交通，政府勢必導入技術裝置做為多元化應用。由於市區道路在限制與複雜性程度上遠比高速公路條件來的多，除了單位時間內高車流量外，必須考量車輛種類多樣化與政府標準法規對於都市區域所能發射之電磁波功率強度，最終更要滿足讀取範圍區塊內能維持穩定之讀取率。因此讀取閘門若建立於市區道路，需針對上述條件與問題來建構且使得電子標籤在條件限制下維持高穩定度的讀取率。本研究在於探討如何運用RFID 技術導入現有之ETC讀取閘門模組，藉由閘門高度與天線配置方向調整，提出建構讀取閘門模型並利用有限元素分析之HFSS軟體分析計算電磁場強度分佈情形，由模擬來驗證此設計可符合市區道路各類車種之需求，且電磁波之輸出功率由原先法規規範之0.5W，透過電磁波原理計算模擬降低至約為0.36W，最終探討讀取閘門所發射之電磁場強度可滿足所通過之電子標籤的穩定讀取關係。

關鍵字

RFID ；電場強度；讀取率；有限元素分析

並列摘要

In Taiwan, National Freeway using RFID technology to electronic toll collection system, the problems faced by the electronic tag read rate stability. Due to the adoption a single type portal of high output power, after adjusted correction, using vehicle’s of electronic tag also enhance approaching six million vehicles. The skillful of system setting has been gradually, and reduce the likelihood of the occurrence of plugging back traffic on the highway. In the future of urban road traffic, the government is bound to import technical devices as diverse applications. Since the extent and complexity in limiting on urban roads than the highway to many conditions, in addition to the high traffic volume per unit of time, must consider the diverse types of vehicles with government standards and regulations for electromagnetic waves that can transmit power strength of the urban area. Ultimately, the read range can be maintained stable to satisfy block read rates. This study is to explore how to use RFID technology into existing ETC module of reading portal, the portal height and antenna configuration through reorientation proposed model to construct the portal reading and use finite element analysis software HFSS analysis of the electromagnetic field intensity distribution is calculated. By simulation to validate this design to meet the needs of various types of vehicles of urban roads, and electromagnetic waves is 0.5W output power can be reduced to about regulatory norms of 0.36W. Ultimately explore the emitted electromagnetic field strength reading of the portal to meet a stable relationship by reading the electronic tags.

並列關鍵字

RFID ； Field strength ； Reading rate ； Finite element analysis

參考文獻

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國際替代計量

eTag系統應用於市區道路之可行性評估研究

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