透過無線射頻識別標籤與磁鐵偏置之磁簧開關實現非接觸的分佈式識別

RFIMatch: Contactless Distributed Identification Using RFID-Tagged Magnet-Biased Reed Switches

柯政佑(Jheng-You Ke)

指導教授 ： 陳炳宇

國立臺灣大學/電機資訊學院/資訊工程學研究所/碩士(2018年)

https://doi.org/10.6342/NTU201801239

摘要

本論文提出一技術在兩個被動式無線射頻識別 (RFID) 標籤之間實 現非接觸的分佈式識別。改造傳統的特高頻 (UHF) 無線射頻識別標 籤，將其天線與晶片以磁簧開關連接，並在磁簧開關的一端附著磁鐵，使其成為一個常開式 (always-on) 開關。當兩個模組彼此靠近時，模組上的兩個磁鐵彼此抵銷，同時關閉其開關，爾後，共同消失的識別碼 (ID) 用以表示一個獨立的互動事件。除了感測以外，模組還能透過磁鐵的斥力提供自然的觸覺回饋，亦可額外附加能量收集模組與LED來提供視覺的回饋。此特定的硬體設計方法實現了被動式的非接觸識別互動感測，而其造型規格足夠小，以適用於嵌入式或穿戴式的普及運算應用中。

關鍵字

無線射頻識別 ； 分佈式感測 ； 非接觸式感測 ； 嵌入式互動 ； 穿戴式

並列摘要

This thesis presents a technique that enables contactless distributed identification between two passive RFID tags. Conventional UHF RFID tags were modified by connecting its antenna and chip with a reed switch and attaching a magnet to one terminal of the reed switch, to change it into an always-on switch. When the two modules move close to each other, the two magnets counteract each other and turn off the switches at the same time, then, the co-absence of the ID indicates a unique interaction event. In addition to the sensing, the module also provides native haptic feedback through the magnetic repulsion force. Additional visual feedback can be further provided using an energy harvesting module and an LED. This specific formulation of hardware design enables passive contactless sensing of identifiable interaction, and the form factor is small enough for embedded and wearable uses for ubiquitous computing applications.

並列關鍵字

RFID ； Distributed Sensing ； Contactless Sensing ； Embedded Interaction ； Wearable

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