a proposal and examination of a newly guidance method in indoors
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A PROPOSAL AND EXAMINATION OF A NEWLY GUIDANCE METHOD IN INDOORS
Takao YanagiharaKinki University Faculty of Science and Engineering
Ken Kuwahata Kuwahata Design Office Co., Ltd.
Yoshiaki HaraResearcher Hyogo Institute Assistive Technology
Introduction
The previous research Nakamura et al. ( 2008,2009 ) The result showed that even in the
case of lower dot-shaped TWSIs as 3.4 mm height and bar-shaped TWSIs with 2.4 mm height, the detectability of them are similar to 5.0 mm height of TWSIs compliant with the JIS.
The subject of previous research
To examine the height of steps which have been the cause of the stumble, analyzed walking characteristics of elderly people. The result showed that the height of steps should be less than 2.4 mm.
Kuge et al. (1999)
Purpose of the research
Reducing barriers of TWSIs Maintaining the function of TWSIs.
The purpose of this study is to develop TWSIs having 2 mm height or less.
Target of this study
Indoor has little hazards compared with the outdoors.
Floors of indoor is comparatively flat.
TWSIS is not installed in the building well.
Warning patterns ( diameter 20mm ) ( 30mm ) ( 40mm )
Square grid
Staggered row
50cm
50cm
Height 1mm 、 2mm
Guiding patterens
50cm
25cm
Height 1mm 、 2mm
Subjects
Visual Impairments total 25 people
Detection experiment1,2 (Warning patterns)
Detection experiment 1
Goal
6.0m
Start
Start Position
Tactile Position
Detection experiment 2
Detection experiment3,4(Guiding patterns)
10m
Detection experiment 3
Detection experiment 4
Result Detection experiment1~4
( diameter 20mm ) ( 30mm ) ( 40mm )
Staggered row
Guiding pattern:1,2,3 linesHeight: 1mm,2mm
Warning patternsArrangement:staggered row Height:1mm, 2mmDiameter:20mm,30mm
Detection experiment 5
90%100%
50%
90%
50%
70%
100%90% 90%
80%
50%60%
0%
20%
40%
60%
80%
100%
120%
φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30
1 1 2 2 3 3 1 1 2 2 3 3
9 10 5 9 5 7 10 9 9 8 5 6
Height 1㎜ Height 2㎜
Diameter
Numberof bars
(detection rate)
n
Result ( Detection experiment 5 )
3.2 3.5
2.8
3.4
2.6 3.0
3.6
4.1
3.3 3.6
3.2 2.8
1.0
2.0
3.0
4.0
5.0
φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30 φ20 φ30
1 1 2 2 3 3 1 1 2 2 3 3
9 10 5 9 5 7 10 9 9 8 5 6
Height 1㎜ Height 2㎜
Diffcultyof detection
DiameterNumberof bars
n
CONCLUSIONIn order to secure the detection rate of 90% or more, two or one lines are needed.
However, in the experiment 3-4, the number of bars has good evaluation of three lines. Best combination is Guiding patterns is 2 mm height and 2 lineWarning pattern is staggered row and 2 mm height , and 20 mm and 30 mm diameter
Height 2mm
( diameter 20mm ) ( 30mm)
幅( 30mm )
Thank You for Your Attention
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