視障用直尺之設計與使用績效評估

The Design and Evaluation of the Ruler Devoted for Visually Impaired People

許光傑(Kuang-Chieh Hsu)

指導教授 ： 涂永祥

大同大學/設計學院/工業設計學系所/碩士(2008年)

摘要

本研究目標是設計「視障者繪製直線」的輔具，並與現行的輔具做績效比較，瞭解改良成效。透過實驗分析獲得提高工具精確性及操作效率的方向，做為進一步開發的設計依據。本研究共進行三個實驗：（一）學校尺、構想尺比較：分別對12位盲眼人與12位矇眼人進行測驗，以T檢定針對尺別與使用者進行檢測，結果發現構想尺的整體時間較學校尺少約10秒鐘，構想尺在畫線速度上有改進。（二）刻度對位績效研究：男女各15位矇眼人進行刻度對位實驗，以ANOVA檢定發現，男性的對位時間顯著的大於女性，在對位偏差上，則女性在線型刻度上顯著的少於男性。（三）三尺比較實驗：比較學校尺、構想尺與修正尺三把不同的直尺，以及任務的不同是否對於操作績效造成影響？經由成對比較發現，修正尺採用兩端對位的方式，可以跟直接觸摸點字的方式達到一樣簡便的效果，在對位時間上明顯改善了構想尺的缺失。本研究所得之結果與設計方向，可提供視障直尺後續設計之參考，由實驗得知影響畫線及操作績效的因素，將可作為日後改進與研究的基礎。

關鍵字

視障 ； 畫線 ； 觸摸 ； 對位

並列摘要

The study was to design a new tactile ruler for the blind user, and the ruler was found effective though three experiments. The first experiment was to compare the conceptual design (R2) and the current ruler (R1) with 4 tasks. 12 blind people and 12 blindfolded people joined the experiment; it was found that the mean average of total action time of the conceptual ruler was significantly lower than the current one about 10 sec. by the two sample t-test. But the mean average of total deviation of endpoints was not significantly different between the two rulers.
The results and the designs of the new tactile ruler indicate the effective design direction to the field of tactile tool. Through the second experiment, the 3diffrernt type of marks and 3 different types of conditions were compared. Fifteen males and 15 females were blindfolded and they were asked to align 3 different marks on 3different condition in a randomized order.
The ANOVA test found there was no significantly different mean average position deviation average the three marks; but the mean action time of male was significantly longer then female, and also the mean position deviation of female was significantly lower then the male’s. After the two pilot experiments, a new creative ruler was designed (R3).
The third experiment was to test the three rulers (R1, R2, and R3) to verify the effectively of the R3 ruler. The MANOVA was employed and three was no significant interaction effect at the action time and position deviation between the rulers and subject groups. And there were significant different among the three rulers at the mean average action time, the comparison of after effects showed that the R3 had the lowest mean average action time. The conclusion was that new creative tactile ruler the (R3) was the better ruler than the current ruler at action time, and there was no significant differences between the two rulers at the position deviation.

並列關鍵字

visual impairment ； line drawing ； tactile

參考文獻

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