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Michael Lawo ([email protected]) Using Wearable Computing Technology to Empower the Mobile Worker TNC 2009 Malaga 11.6.2009 Michael Lawo , Otthein Herzog, Peter Knackfuß
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Michael Lawo ([email protected])
Using Wearable Computing Technology to Empower the Mobile Worker
TNC 2009 Malaga 11.6.2009
Michael Lawo, Otthein Herzog, Peter Knackfuß
Michael Lawo ([email protected])
Motivation
• Today, information access is usually possible - anytime and anywhere• There is always useful information - somewhere• Storage of information is often wanted or even needed
But:
• Information is still rarely used outside the classical office environment• E.g.
Michael Lawo ([email protected])
The Desktop Computing Paradigm
stationary
User is focusedon the system
No interaction with the environment
Michael Lawo ([email protected])
Wearable System
User Real World
The Vision of Wearable Computing
2-way interaction Environment sensitive
Context recognition Augmentation
Unobtrusive Always „on“ Highly integrated
Interaction and Context are the keys.
Michael Lawo ([email protected])
Michael Lawo ([email protected])
Working with a Wearable Computer
Wearable Computing often expects users to accomplish different tasks simultaneously
Primary Task Real world task Often manual tasks Mobility
Secondary Task Supporting computer task Interaction with the wearable system
Aircraft Maintenance
Car Production/TrainingHow to design the user interface?
Michael Lawo ([email protected])
Interaction Challenges in Wearable Computing
Challenges Information density
Screen size, encoding, etc.
Attention grabbing capabilities Social acceptance Use in a dual-task scenario
Human-Computer Communication Cycle by Bowman et al. [BKLP05]
Text Audio
Gestures
Special Purpose
Challenges Device limitations
Size, weight, power consumption Novel usage patterns Implicit input (context recognition) Use in a dual-task scenario
Michael Lawo ([email protected])
Wearable Computing Architecture
Application Design Space
Architecture Components
Michael Lawo ([email protected])
Wearable User Interface Toolkit
Features Development based on reusable components Development with limited knowledge about wearable computing I/O device independent specification
Model-based development, e.g. Concurrent Task Trees (CTT) [Paterno99]
Support for context-aware interfaces and automatic interface adaptation Part of the Open Wearable Computing Framework (OWCF)
WUI-Toolkit
Michael Lawo ([email protected])
UI Evaluation | HotWire Primary Task Simulator
Idea of the HotWire inspired by kid’s game Originally intended to train motor skills Rules
“Pass a ring from one end of the wire to the other end.”
“Don’t touch the wire with the ring!”
Simulates real world primary tasks Abstracts manual task characteristics Retains properties of wearable computing
E.g. being involved in physical manual tasks
Easy to learn Easy to build Usable in the laboratory
First Prototype
“Der heiße Draht” Commercial Product
Laboratory Experiment VersionCeBit 2007 HotWire Demo
Michael Lawo ([email protected])
Context detection
Integration of context recognition system and supporting application for the part assembly (Front Light)
Context recognition Wristband Device Data Acquisition Module (DAM) Context recognition for task
tracking Application (Integration of OWCF
components) wearIT@work core framework JContextAPI WUI Speech recognition
Other features QBIC / OQO Zeiss Binocular Look-around
HMD Activity monitoring
Michael Lawo ([email protected])
Context detection motion jacket
Setup to annotate activities Recording of checkpoint
procedures Synchronization of 3 sensor
types (frequency, reliability) Re-labelling of 2 parallel activity
annotation streams Parallel work on activity spotting
in 2 sensor domains (motion, muscle activity)
Motion Jacket
UbiSenseTag
UbiSense (UWB) Base
Michael Lawo ([email protected])
Context detection tests and first results
(video)
Context Recognition in Car Production Supporting application for the part
assembly (Front Light)
Context recognition using Wristband Device Context Toolbox Machine Learning Techniques
HMMs Segmentation
Michael Lawo ([email protected])
Systemarchitecture
Middleware
Operating System
Application
Service Framework
Michael Lawo ([email protected])
Conclusion
Wearable computing provides services for new user groups, especially in the professional environment Maintenance and assembly Emergency response Sports
Mobile Computing Systems are needed which enable dual-task environments with a primary real-world task
Mobile Systems are needed which use personal and environmental sensors in order to provide assistance functions on the move
Michael Lawo ([email protected])
Thank you for your attention.
Prof. Dr. Michael LawoTZI, University of [email protected]
German chancellor Angela Merkel at TZI’s CeBIT booth
