International Telecommunication Union Geneva, 2 November 2009 Ergonomics-oriented design using ISO/IEC Guide 71 and ISO/TR 22411 Ken Sagawa, Prime Senior Researcher, National Institute of Advanced Industrial Science and Technology (AIST), Japan ITU-T Workshop "The impact of the United Nations Convention on the Rights of Persons with Disabilities on the work of the ITU-T" Geneva, 2 November 2009
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Ergon o mics-oriented design using ISO/IEC Guide 71 and ISO/TR 22411
ITU-T Workshop "The impact of the United Nations Convention on the Rights of Persons with Disabilities on the work of the ITU-T" Geneva, 2 November 2009. Ergon o mics-oriented design using ISO/IEC Guide 71 and ISO/TR 22411. Ken Sagawa, Prime Senior Researcher, - PowerPoint PPT Presentation
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InternationalTelecommunicationUnion
Geneva, 2 November 2009
Ergonomics-oriented design using ISO/IEC Guide 71 and ISO/TR 22411
Ken Sagawa,Prime Senior Researcher,
National Institute of Advanced Industrial Science and Technology (AIST), Japan
ITU-T Workshop"The impact of the United Nations Convention on the Rights
of Persons with Disabilities on the work of the ITU-T"Geneva, 2 November 2009
InternationalTelecommunicationUnionITU-T Workshop on Accessibility
Geneva, 2 November 20092
Accessible Design
Instruc3 times/day ・・・ ・・・
Extending standard design to people with special requirements (older persons and persons with disabilities) to maximize the number of potential users (from ISO/IEC Guide 71)
Map&
Plan
Article 9 - Accessibility
in “UN Convention on the Rights of Persons with Disabilities”
InternationalTelecommunicationUnionITU-T Workshop on Accessibility
Geneva, 2 November 20093
Guidelines for standard developers to address the needs of older persons and persons with disabilities
ISO/IEC Guide 71: 2001
Alternative format Location/LayoutLighting/glareColour/contrastSize/style of fontClear language Symbols/drawingsVolume/frequencySlow paceDistinctive formEase of handlingExpiration date making
How to designHow to consider
Contents labeling Surface temperature Accessible routesLogical processSurface finishNon-allergenic/toxicAcousticsFail-safeVentilationFire-resistance
Factors to consider
(Ergonomic issues)
InternationalTelecommunicationUnion
An example of Factors to consider (1)
ITU-T Workshop on AccessibilityGeneva, 2 November 2009
4
Alternative format (Vision Tactile)
Prepaid cards Containers
(milk container)
InternationalTelecommunicationUnion 5
An example of Factors to consider (2)
Sound pressure/frequency (of auditory signals )
Hearing sensitivity and auditory signals
( From Kurakata et al)ITU-T Workshop on AccessibilityGeneva, 2 November 2009
Warning
Termination
Feedback
InternationalTelecommunicationUnion
ISO/TR22411 (2008)
ITU-T Workshop on AccessibilityGeneva, 2 November 2009
6
ISO/TR 22411: 2008Ergonomic data and guidelines for the application of ISO/IEC Guide 71 to products and services to address the needs of older persons and persons with disabilities.
A collection of ergonomic data and design considerations relevant for accessible design to implement ISO/IEC Guide 71
(Developed by TC159/WG2)
InternationalTelecommunicationUnion
Contents of TR22411 (examples)
ITU-T Workshop on AccessibilityGeneva, 2 November 2009
7
Instructi3 times/day……………..
MAP
MEMO&
Sound pressure and frequency (hearing)
Working memory and attention (cognitive)
Tactile discrimination
Reach range(physical) Step height
(physical strength)
legible font size (vision)
Colour combination (vision)Useful visual field (vision)
InternationalTelecommunicationUnionITU-T Workshop on Accessibility
Geneva, 2 November 20098
Wavelength (nm )
Lu
min
ou
s e
fficie
ncy (
in log
un
it)
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
350 400 450 500 550 600 650 700 750
( a total of 91 subjects)
Average of people
in their 20s
Average of people
in their 70s
Contrast seen by an observer in their 20s
a sign example
sign
Background
Wavelength (nm)
Le, (sign)
.0000
.0005
.0010
.0015
.0020
400 450 500 550 600 650 700Sp
ect
ral ra
dia
nce
(W
m-2sr
-1)
Le, (back.)
spectral radiance data
Contrast seen by an observer in their 70s
Contrast =
= 34 %
Le,(sign) V(20)()Le,(back) V(20)()
Le,(sign) V(20)()+ Le,(back) V(20)()
0.0155 – 0.0760.0155 + 0.076
=
Spectral sensitivity of the eye as a function of age
(b) Visual contrast estimation
Age-related relative luminance contrast
Contrast =
= 6 %
Le,(sign) V(70)()Le,(back) V(70)()
Le,(sign) V(70)()+ Le,(back) V(70)()
0.0092 – 0.0820.0092 + 0.082
=
InternationalTelecommunicationUnionITU-T Workshop on Accessibility
Geneva, 2 November 20099
TC159 structure for Accessible Design
• Software accessibility• Tactile markings, etc
Anthropometry and BiomechanicsAnthropometry and Biomechanics
Ergonomics of Human-System InteractionErgonomics of Human-System Interaction
• Step height • Reach range
• Auditory signals • Visual contrast• Color combination • Speech announce guide• Visual signs for low vision, etc
TC159TC159
SC5SC5
SC4SC4
SC3SC3
SC1SC1
WG2WG2
Ergonomics of Physical EnvironmentErgonomics of Physical EnvironmentLiaison Officer +Advisory Group