Human Factors or Ergonomics

Copyright 2002 David A. Wheeler, Ph.D., PHR, CMT NoStress@mail.com   Last updated 07/07/05 09:27 PM

File:introergonomics.htm


Designing to fit people

  • Workstation 
  • Schedule
  • Workplace aesthetics
  • Workplace safety
  • Interpersonal interactions
  • Workflow
  • Controls
  • Displays
     

    The Mall (link only available on my hard drive)

    Human-Machine System
    Person-Environment Relations


    Human-Machine Systems

    Closed Loop System

    Human
        |
    Control
         |
    Machine
         |                        
    Display 
         |
    Human

Examples:

Car

Displays: Gauge, speedometer, battery light, gas, turn signal, temp, radio station, headlights, brake lights

Controls: Ignition, steering wheel, turn signal lever, radio dial, volume, brakes, temp lever 

Computer

Displays: Icons, speakers, Text messages, video, screen, lettering on keys, lights, symbols

Control: Mouse, keyboard, touch screen, barcode, scanner, power button, voice control, digital camera,  
 

Machine:

Displays: 

Control:  
 



Ergonomics: Designing things to fit people

Systems Analysis

Human-Machine Systems

Human->Control->Machine->Display-|
     ^-----------------------------------------|

control: gives information to a machine
display: gives information to a human
control + display = user interface

Closed Loop System
Open Loop System
   Often broken closed-loop system
    Design fail-safe

Sensory Modalities for Displays

  • Visual
  • Auditory
  • Tactile: Shape and texture
  • Kinesthetic: Knowledge of where your body parts are in space
  • Olfactory
  • Gustatory
  • Whole body movement (Vestibular)
  • Vibration
  • Pain

EXAMPLES

Display Modality Examples

 

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Last modified: 10/04/05