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24-Aug-11

Ergonomics: Principles and

Application

1

WG. CDR. AMAN

24-Aug-11

Overview • Definition

• Scope of Ergonomics

• Ergonomic Design

• Anthropometry

• Interface Design

• Fitts and Jones Studies

• Conclusion

• Questions

2

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Definition

Ergonomics is the

Scientific Study of the

Inter-relationships

Between People and

Their Work

3

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Scope

•The Human System

•Environmental Factors

•The Man-Machine Interface

•Total Working System

4

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Scope (1)

Human characteristics Body Dimension

Strength

Physical and mental limitations

Stamina

Learning

Perception Reaction

5

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Scope (2)

Environmental Factors

Temperature

Humidity

Light

Ventilation

Noise

Vibration

6

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Scope (3)

Man-machine interface

Displays

Controls

Communications

Automation

7

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Scope (4)

Total working system

Fatigue

Work rate

Posture

Stress

Productivity

Accidents

Safety

8

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Ergonomic Design

Layout

Vision

Posture

Work Rate

Comfort

9

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Anthropometry

The Study of Body Dimensions to

Help Design Workplace Layouts

and Equipment

10

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Interface Design Principles

Separation Comfort

Order of Use

Priority

Functions

Fatigue 11

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Fitts and Jones Studies of ‘227 Errors’

Errors of Interpretation 48

Errors of Reversal 47 Errors of Legibility 37

Errors of Substitution 95

12

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Conclusion Application of

Ergonomics to the Design of

Tools, Machines, Systems, Tasks,

Jobs and Environments for Safe,

Comfortable and Effective

Human Use 13

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QUESTIONS

14