著者

土井 幸輝 豊田 航 田中 隆

出版者

一般社団法人 日本機械学会

雑誌

年次大会 2011 (ISSN:24242667)

巻号頁・発行日

pp._S153012-1-_S153012-4, 2011-09-11 (Released:2017-06-19)

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Children with visual impairment and teachers of school for the children request new Raised-Line Drawing Kit for practical use in the field of education, because the existing drawing kit do not have sufficient performance to satisfy their various needs. In this paper, we reported that the development of the test model of our Tactile Drawing Pen using beeswax enable people with visual impairment to express and perceive their ideas more accurately. Additionally, we conducted two experiments for collecting the quantitative data to decide the basic specification guaranteeing the high usability for all age people with visual impairment including the children. The results showed that people with visual impairment felt that our device was easy to write when the pen pressure needed to release the inks was lower, and when the radius on the tip was larger. We determine that the recommended values are 50 gram-force. Furthermore, we determined that our Tactile Drawing Pen should equip mechanism to release inks which sizes are 2.0 mm height and 3.0 mm line width because the dimensions are appropriate to understand easily.

著者

土井 幸輝 開発 勇喜 豊田 航 西村 崇宏 藤本 浩志

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.850, pp.16-00470-16-00470, 2017 (Released:2017-06-25)

参考文献数

18

被引用文献数

1

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Tactile characters aid in providing information to visually impaired persons. The Japanese Standards Association enacted basic design methods for embossed tactile patterns in March 2011. However, data on the appropriate size of tactile alphabets are not necessarily enough available. The purpose of this study was to evaluate the influence of the size of a tactile alphabet on identification and to investigate the perceptible size for people without rich tactile experiences. The participants of this study were 15 young people and 15 old people who were unfamiliar with tactile characters intended for visually impaired people. They were asked to discriminate tactile alphabets of six different sizes by using their forefingers without the aid of eyesight. The results showed that the younger and older participants were able to discriminate the presented stimuli faster and more accurately as the stimulus size was increased. Concretely, when the size was 28 mm, each participants regardless of young or older groups could identify the tactile character accurately and quickly. In addition, a trend was seen in that the older group needed larger tactile alphabet sizes than the younger group. We determined the relationship between the tactile alphabet size and discrimination ability of younger and older people without rich tactile experiences.