無線電力傳輸模組開發應用於電子價格標籤無電源化

Wireless Power Transfer Module Develop for Battery-less E-price Tag

洪紹閔(Shao-Min Hung)

指導教授 ： 李達生

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2012年)

摘要

近年來電子價格標籤的相關應用蓬勃發展，各種大型賣場、倉儲貨物管理、便利商店等。漸漸導入電子標籤用以取代傳統的紙製標籤，藉此降低傳統紙製標籤產生的廢料與更換的人力成本，但也面臨一個重大的問題，即是現行的電子標籤都需要定期的更換內部電池，廢棄的電池則會使環境造成汙染。
為此本研究利用無線電力傳輸的方式驅動電子價格標籤進行顯示切換，在依據WPC規範下開發無線電力模組，結合導磁材料與永磁材料的配置，使線圈Tx與Rx在近距離未準位的情況下，仍可維持高效率之電力傳輸，其傳輸效率最高可達70%，並且接收線圈Rx在xy方向7mm與6mm的偏差範圍內，都能保持傳輸效率在60%以上；最後在將其無線電力模組應用於電子價格標籤上，以e-paper(電子紙)做為顯示介面，結合電磁感應原理與無線射頻識別技術，以電磁感應作為能量來源，無線射頻進行資料交換，並借助e-paper雙穩態低耗電的特性，達成電子價格標籤無電源化，減少電池汙染及資源之目的。

關鍵字

無線電力傳輸 ； 電子價格標籤 ； 電子紙

並列摘要

The applications for e-price tags have been growth widely in recent years. Many large retail stores, convenience stores and warehouses cargo management systems have been using the e-price tags to replace the traditional paper tags in order to reduce the wastes and human costs generated by the traditional paper tags. But it also created a big issue, which is the existing e-price tag need to periodically replace the batteries. The replaced batteries cause the environment impact.
This study used of wireless power transmission to drive the e-price tag. The development of wireless power module based on WPC standard. The coil Combined with the ferrite and magent. If the coil Tx and Rx was misalignment in close, the can still maintain high wireless power transmission efficiency up to 70%. When the receiving coil Rx misalign in 7mm and 6mm deviation within the scope of the xy direction, it can keep the transmission efficiency above 60%.
Finally, this device used wireless power module on the e-price tags. E-price tags will be using the e-paper (electronic paper) as display interface, combine with the electronmagnetic coupling and radio frequency identification, which using electronmagnetic coupling to supply power , and radio frequency identification communication to exchange internal information.
The e-paper's “Bistable” feature is different from other related display products; it doesn’t need any electricity supply to keep display after the information changed. Not only the e-price tags don’t need to use battery, but also reduce the battery pollution and resource purposes.

並列關鍵字

Wireless Power Transfer ； E-price Tag ； E-paper

參考文獻

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