運用超高頻無線射頻感應技術設計實體互動操作介面

Abstract

有形使用者介面讓使用者能夠透過實體物件或手指觸摸直接與 數位內容進行互動。然而，現有技術很難提供容易擴展又可靠的感 應能力讓使用者能操作大量實體物件。甚至，使用者體驗也受限於 現有硬體設計，例如視覺回饋會受到不透明的物體遮蔽而降低，部 分使用操作的自由度會因內嵌式的感應器需要嚴格對齊並實體連接 而減弱。因此，我們透過超高頻無線射頻感應技術開發一個容易擴 展且穩定可靠的互動感應系統，RFISensing，能夠同時感應大量物 體的互動操作，如擺放、堆疊及觸摸事件等。為了增加視覺操作體 驗，RFISensing提出一種新穎的直立式觸摸螢幕及透明硬體設計讓系 統能同時支持有形+觸摸操作，使用者也能同時享受有形的互動使用 者介面(TUI)和圖像化使用者介面(GUI)操作的好處及良好的視覺回饋 體驗。此外，RFISensing透過整合磁力感應技術開發一種穿戴式或可 嵌入式的非接觸式的近場(near-surface)身分感應識別技術去解決對齊 的嚴格限制，並且提供使用者三種互動模式，如使用者對使用者、 使用者對物件、物件對物件的互動操作。最後，為了提高操作自由 度，RFISensing開發一種無線和可擴展的模組化傳感器，能夠提供使 用者在普及計算應用環境中更精細的二維觸摸操作。

The tangible user interface allows the user to directly interact with digital content through physical objects or finger touches. However, the prior arts are difficult to provide the scalable and reliable sensing to interact with large physical objects. Moreover, the current hardware design limited user experience. For example, the opaque objects reduced the visual experience, and the requirement of sensors strictly aligning and physically connecting decreased the operational freedom. Therefore, we developed RFISensing, a reliable and scalable interactive system based on Ultra High Frequency Radio Frequency Identification for detecting the interactions of a large number of objects, including placement, stacking and touch. To increase the visual experience, RFISensing also proposes a novel vertical touch screen and transparent hardware design to enable tangible + touch operations, and users can simultaneously obtain the benefits of TUI and GUI operations and avoid parallax problem. Moreover, RFISensing develops the wearable and embeddable noncontact near-field identity sensing to solve the strict restrictions of alignment by integrating magnetic sensing, and provides users with three interactive modes, such as user-to-user and user, user-to-object, objects, and object-to-object. Finally, to increase the freedom of user interaction, RFISensing has developed a wireless and scalable modular sensor that provides users with a more granular two-dimensional touch operation in a ubiquitous computing environment.