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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
Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li...
<ul><ul><li>RFID  System </li></ul></ul><ul><li>An operating frequency determines how energy and  </li></ul><ul><li>data i...
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 ...
Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li...
<ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio  and evaluation of RFI...
<ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio  and evaluation of RFI...
<ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio  and evaluation ...
<ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio  and evaluation ...
Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li...
<ul><li>Conclusions </li></ul>We presented performance issue of an RFID system in a vehicular environment.  e.g. the rando...
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Installation and evaluation of rfid readers on moving vehicles

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Installation and evaluation of rfid readers on moving vehicles

  1. 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. 2. Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li></ul><ul><li>TEST ROAD </li></ul><ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><li>Conclusions </li></ul>
  3. 3. <ul><ul><li>RFID System </li></ul></ul><ul><li>An operating frequency determines how energy and </li></ul><ul><li>data is transmitted,through an inductive coupling or a </li></ul><ul><li>backscattering coupling 。 </li></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>
  4. 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) <ul><li>讀取範圍超過 1.5 公尺 </li></ul><ul><li>2. 不易受天候影響 </li></ul>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. 5. Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li></ul><ul><li>TEST ROAD </li></ul><ul><ul><li>Testbed Configuratio </li></ul></ul><ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><li>Conclusions </li></ul>
  6. 6. <ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>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. 7. <ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>
  8. 8. <ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>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. 9. <ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>
  10. 10. Outline <ul><li>Introduction </li></ul><ul><ul><li>RFID System </li></ul></ul><ul><li>EVALUATION OF RFID READ RATE ON </li></ul><ul><li>TEST ROAD </li></ul><ul><ul><li>Testbed Configuration </li></ul></ul><ul><ul><li>Effect of Tag Multiplicity </li></ul></ul><ul><li>Conclusions </li></ul>
  11. 11. <ul><li>Conclusions </li></ul>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 <ul><ul><li>參考文獻 </li></ul></ul><ul><li>Installatio and evaluation of RFID readers on moving vehicles Eun-Kyu Lee , Young Min Yoo , Chan Gook Park , Minsoo Kim , Mari </li></ul><ul><li>Gerla </li></ul><ul><li>September 2009 VANET '09: Proceedings of the sixth ACM international workshop on VehiculAr InterNETworking </li></ul>

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