cognitive task analysis and adaptive interfaces in process control marc grootjen [email protected]...
Post on 21-Dec-2015
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Cognitive task analysis and adaptive interfaces in process control
Marc [email protected]: 10.100
Usability Engineering CourseIN 4083
Introduction
• Measuring CTL (cognitive task load)• Manipulating CTL – Design process• Manipulating CTL – Real time• Summary
Measuring CTL – The modelOld situation – Time occupied Current situation
Manipulating CTL – Design process
Tools to manipulate CTL:
• Task allocation• Interface support
system
t=5.05
t=4.30
operatorhotel
operatormobility others
timel
ine
actors
task-set 1
task-set 2
Complexity high
Complexity low
operator 3 announces
cause
communi-cates with operator 3
announces leakage and
asks for extra personnel
low pressure alarm
steering machine
receives request for personnel
operator 3: sends
personnel
shut down of primairy pump
portside
activation of secondary
system
communi-cates
operator hotel
CTL factors1. Time occupied2. Complexity3. Task switches
1
32
Manipulating CTL – Real time
Adaptationmodel
Contextmodel
Operatormodel
Taskmodel
Systemmodel
Adaptationstrategy
Interfaceadaptation
Task allocationperformed by:
Manipulating CTL – Real time
Adaptationmodel
Contextmodel
Operatormodel
Taskmodel
Systemmodel
Adaptationstrategy
Interfaceadaptation
Task allocationperformed by:
Summary
• CTL model• CTL method• Manipulation in design process and real time• Adaptive interface