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研究生:施健旻
研究生(外文):Shih ,Jian-Ming
論文名稱:運動賽事計時用無線射頻辨識系統讀取品質改善
論文名稱(外文):Improvement of Reading Quality for Sport Events Timing RFID System
指導教授:林明星林明星引用關係
指導教授(外文):Lin,Ming-Shing
口試委員:曾振東林瑞昌古東明許崇宜林明星
口試委員(外文):Tseng,Jan-DongLin,Ruei-ChangGu,Dong-MingHsu,Chung-YiLin,Ming-Shing
口試日期:2017-07-26
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:電機工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:171
中文關鍵詞:無線射頻辨識系統 (RFID)共振環
外文關鍵詞:Radio frequency Identification (RFID)ring resonantor
相關次數:
  • 被引用被引用:4
  • 點閱點閱:142
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  • 下載下載:13
  • 收藏至我的研究室書目清單書目收藏:0
本論文提出一外界電磁環境模擬系統模擬外界電磁環境對運動賽事用RFID系統的影響,並探討干擾源在不同強度、不同頻率、諧振頻率及AM調變條件下對本系統的影響;而除了外界電磁環境的干擾外,吾人亦針對金屬環境的影響進行分析,及提出利用高導磁材料來束縛磁通及利用可調式電容器調整因金屬效應頻偏的地墊共振頻率來抑制金屬效應。
本研究提出共振環來抑制外界電磁環境影響及增加感應地墊的感應距離及平坦度,並利用電磁模擬軟體對理論公式進行驗證;本研究亦提出磁場及磁場耦合量兩種量測架構來驗證模擬及理論推算結果;另外吾人將共振環應用於外界電磁環境模擬系統來抑制干擾源,藉由調整不同電容值來調整共振環的共振頻率,找出其最佳電容值,將其應用於抑制干擾源,降低外界電磁干擾源對系統的影響;而除了抑制干擾源外,吾人亦提出一應用於運動賽事用RFID系統發射端頻率125 kHz的共振環,來提升運動賽事用RFID系統的讀取距離及平坦度,進而改善其讀取品質。

關鍵字: 無線射頻辨識系統 (RFID) 、 共振環

This thesis investigates a sport-event RFID system and proposes some strategies for improving the performance of the system. Outcomes achieved in this thesis are summarized below: (1) Propose an external electromagnetic environment simulation system to simulate the influence of the external electromagnetic environment on the sport-event RFID system. (2) Investigate the influence of the interference source on the system under different conditions, including field intensities, fundamental frequencies, harmonic frequencies, and AM modulation. (3) Investigate the effect of the metal environment. (4) Propose two methods for reducing the metal effect, including the use of high-permeability materials to bind the magnetic flux and the use of adjustable capacitors to adjust the metal-induced frequency deviation. (5) Propose using a ring resonator to reduce the influence of the external electromagnetic environment and to increase the reading distance and flatness of the reading mats. (6) Validate some theoretical formulas by using the electromagnetic simulator. (7) Propose two measurement architectures for magnetic field and magnetic coupling measurements. (8) Apply the ring resonantor to the external electromagnetic environment simulation system to reduce the interference source, and to reduce the impact of external electromagnetic interference on the system. (9) Propose palcing a ring resonator of 125 kHz beside the transmitter of the sport-event RFID system to enhance the reading distance and flatness of the RFID system and thus to improve its reading quality.

Key words : Radio frequency Identification (RFID) 、ring resonantor






摘要 i
Abstract ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 x
第一章 緒論 1
1.1 前言 1
1.2 文獻探討 2
1.3 研究目的與動機 4
1.4 碩論架構 5
第二章 運動賽事用無線射頻辨識系統介紹 6
2.1 運動賽事用無線射頻辨識系統架構介紹 6
2.2運動賽事用RFID系統之訊號耦合方式介紹 8
2.3運動賽事用RFID系統分類 10
2.4運動賽事用無線射頻辨識系統相關規範 12
2.5運動賽事用RFID系統訊號調變方式 12
2.6 運動賽事用RFID系統之讀取器介紹 15
第三章外界干擾環境對運動計時用無線射頻辨識系統之影響 17
3.1 外界干擾源之簡介 17
3.2外界電磁環境對賽事計時RFID系統影響之評估方法 18
3.2.1 外界電磁環境對賽事計時RFID系統影響之評估量測架構 18
3.3外界電磁環境對賽事計時RFID系統之影響量測結果 21
3.4金屬表面對運動計時用無線射頻辨識系統之影響 36
3.4.1 利用高導磁材料來抑制金屬效應 44
3.4.2 利用可調式電容器調整共振頻率來抑制金屬效應 50
第四章 利用共振環降低外在電磁干擾及增加系統讀取距離及平坦度 56
4.1共振環設計流程 56
4.2 共振環理論公式推導 58
4.3 共振環磁場耦合量、磁場模擬 61
4.3.1 應用於發射端頻率125 kHz的共振環磁場、磁場耦合量模擬 62
4.3.2應用於發射端頻率 6.8 MHz的共振環磁場、磁場耦合量模擬 73
4.4共振環磁場耦合量、磁場量測 83
4.4.1應用於發射端頻率125 kHz的共振環磁場、磁場耦合量量測 86
4.4.2應用於發射端頻率6.8 MHz的共振環磁場、磁場耦合量量測 97
4.5 利用共振環降低外在電磁干擾 106
4.6利用共振環增加系統讀取距離及平坦度 112
第五章 結論 133
附錄 A 共振環總磁場理論公式推導 138
附錄 B 應用於125 kHz 之共振環三軸磁場量測 139
附錄 C 應用於6.8 MHz 之共振環三軸磁場量測 145
附錄D 地墊讀取距離第二次量測 151

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