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Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
Installation and evaluation of rfid readers on moving vehicles
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Installation and evaluation of rfid readers on moving vehicles

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  • 1. Installation and evaluation of RFID readers on moving vehicles 評估對行駛中的車裝置 RFID 讀取器 學生:楊鴻志
  • 2. Outline
    • Introduction
      • RFID System
    • EVALUATION OF RFID READ RATE ON
    • TEST ROAD
      • Testbed Configuration
      • Effect of Tag Multiplicity
    • Conclusions
  • 3.
      • RFID System
    • An operating frequency determines how energy and
    • data is transmitted,through an inductive coupling or a
    • backscattering coupling 。
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
  • 4. RFID 使用頻率 為避免各國無線電頻率使用標準不一,造成使用上的混亂與困擾,國際上大 多遵守國際電信聯合會( ITU )的規範。 表 RFID 頻譜比較分析表       資料來源: Forrester Research, Inc. 頻率 優點   缺點 應用範圍 低頻 (9-135Khz)   1. 此頻段在絕大多數的國家屬於開放,不涉及法規開放和執照申請的問題。    讀取範圍受限制   ( 在 1.5 公尺內 ) 1. 畜牧或寵物的管理。 2.  門禁管理、防盜系統。 高頻 (13.56Mhz)   1. 高接受度的頻段   2. 在絕大多數的環境都能正常運行   1. 在金屬物品附近無法正常運作 2. 讀取範圍在 1.5 公尺左右   1.  圖書館管理 2.  貨版追蹤 3. 大樓識別証 4.  航空行李標籤或電子機票 超高頻 (300-1200Mhz)
    • 讀取範圍超過 1.5 公尺
    • 2. 不易受天候影響
    1. 此頻段在日本不允許作為商業用途 2. 頻率太相近時會產生同頻干擾 3. 在陰濕的環境下會影響系統運作    1. 工廠的物料清點系統 2. 卡車與拖車的追蹤 微波 (2.45 或 5.8Gzh)    超過 1.5 公尺的取範圍 1. 此頻段在某些歐洲國家不允許作為商業用途 2. 複雜的系統開發流程 3. 在先今環境不被廣泛使用    高速公路收費系統
  • 5. Outline
    • Introduction
      • RFID System
    • EVALUATION OF RFID READ RATE ON
    • TEST ROAD
      • Testbed Configuratio
      • Effect of Tag Multiplicity
    • Conclusions
  • 6.
      • Testbed Configuration
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
    Test 1 is considered to evaluate the RFID read rate in the straightforward configuration: a single reader antenna and a single tag. The tags are placed at 2m interval and the test vehicle travels at the maximum speed of 100km/h. Theresult is compared to that from Test 2 to see the e ff ect of dual RFID reader antennas, as summarized in Figure 14.
  • 7.
      • Testbed Configuration
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
  • 8.
      • Effect of Tag Multiplicity
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
    With dual RFID reader antennas, we vary the number of member tags in the interval, i.e. Test 2 to Test 6. The results are shown in Figure 15. The low number of duplication read is highly connected to performance as shown in Figure 15(b).
  • 9.
      • Effect of Tag Multiplicity
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking
  • 10. Outline
    • Introduction
      • RFID System
    • EVALUATION OF RFID READ RATE ON
    • TEST ROAD
      • Testbed Configuration
      • Effect of Tag Multiplicity
    • Conclusions
  • 11.
    • Conclusions
    We presented performance issue of an RFID system in a vehicular environment. e.g. the random tag pause time, is one critical factor influencing the RFID read performance. A long pause time helps prevent RFID tags from collision. On the other hand,it could degrade RFID performance in time sensitive vehicular applications that require very short read latency
      • 參考文獻
    • Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari
    • Gerla
    • September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking

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