應用智慧型手機與RFID為視障者行動導引裝置之設計研究

A Study on Applying the Smart Phone and RFID for the Design of Mobile Guide Devices for Visually Impaired People

洪子喬(Tzu-chiao Hung)

指導教授 ： 吳志富

大同大學/設計學院/工業設計學系所/碩士(2010年)

摘要

近年來視障者外出之頻率不斷攀升，大多數具備獨立行動之能力，對四周環境也極為敏感，因此能夠掌握熟悉路線之空間資訊。但是當視障者面臨未知的陌生路線或是處於紊雜的公共環境時，常容易迷失方向甚至造成危險。一般導盲設施皆為固定且被動式的建置，因此即使視障者想找尋導盲磚或固定式觸摸地圖來輔助定位導引，也會耗費大量的時間及精力，徒增其心智負荷及挫折感。因此本研究以視障者習慣攜帶使用之智慧型手機為平台，結合RFID技術並探討不同語音及震動之組合模式，參數設定為特徵點種類(站牌、路口及站牌、路口站牌及地標)與手機提示方式(語音、震動後語音、震動後-按鍵-語音)，探討使用績效(錯誤次數、任務達成時間以及求救次數)，以及滿意度主觀評量，並以ANOVA單因子變異數進行分析，於顯著項目再以LSD事後檢定各組數據之間的差異。結果顯示，特徵點種類及密度配置以站牌、路口及地標均有為最佳；手機回饋之語音及震動模式為有震動輔助為佳，透過主觀評量之分析結果也可得知視障者對於震動後-按鍵-語音模式之喜好程度也相當地高。本研究結果可供室外定向導引技術之參考，以期讓視障者外出時能迅速、直覺地作個人定位，如此不僅能降低其於路口徘徊之危險性，更可提升獨自外出之意願，有效達成無障礙空間的推廣。

關鍵字

特徵點 ； RFID ； 視障者 ； 手機提示

並列摘要

In recent years, though the frequency of outgoing visually impaired people is rising continuously, however, most of them still have the ability to act independently and they are very sensitive to their surrounding environments, therefore, they always have a good sense of mobile spatial information along their habitual routes. But when the visually impaired people are moving into an unknown and unfamiliar territory or staying in a complicated public environment, they often get lost easily or they may even put themselves in danger. Most of public facilities designed especially for the blind and visually impaired people have been constructed immovably and passively, so whenever the visually impaired people are trying to find the direction by means of tactile floor tiles or static tactual maps, under this circumstance, it would cost them a great deal of time and strength, and hence, it would make them to feel anxious and frustrated time to time. Thus, this study utilizes the smart phones carried and commonly used by many visually impaired people as a platform to be operated along with RFID technology, and this study also probes into various combination patterns of voice and vibration, and in addition, parameters adopted in this study were related to several types of points of interests (POI) (e.g. bus stop board, intersection and bus stop board ; intersection, bus stop board and landmark) in addition to the alert modes for a mobile phone (e.g. audio alert, vibration prompt after audio alert, vibration prompt-pushing a button-audio alerting); and whereby, the present study will survey the usage performance (e.g. number of errors, time taken to complete the task and frequency of call-for-help) and conduct a subjective evaluation of consumer’s satisfaction along with the One-way ANOVA Analysis, and afterward, the difference between various data sets of significant items will be tested using the LSD Post-hoc Test. The research results showed that best performance was achieved while both the stop board and signpost and landmark were available in terms of types of points of interests and density allocation; and the optimal feedback mode for the mobile phone was to activate the audio alerting mode together with vibration mode, and moreover, based on an analysis of subjective evaluation, it was found that one of the most preferable alert modes selected by visually impaired people was vibration prompt-pushing a button-audio alerting. These research results can contribute to a better designing of mobile guide devices to allow the visually impaired people be able to quickly and intuitively find their locations and directions when they go out and hence it not only can reduce the risk of accidents happened while they are wandering at intersections, but also it will be able to effectively promote the use of barrier-free public spaces by enhancing the willingness of visually impaired and blind people to go out alone.

並列關鍵字

smart phone ； RFID (Radio Frequency Identification) ； Visually impaired people ； point of interest (POI) ； mobile guide devices

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