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In this paper a system design approach is proposed, which is based on a user needs assessment and a flexible and adaptable architecture for dependable system integration. The feasibility of the approach is shown on the example of an assistance system for electrically powered wheelchairs. The system requirements correspond to the cognitive and motor abilities of the wheelchair users. For the wheelchair system built up based on a commercial powered wheelchair several behaviors have been realized such as collision avoidance, local navigation and path planning well known from robotic systems, which are enhanced by human-interfacing components. Furthermore, the system design will be high lighted which is based on robotic systems engineering. Due to the fundamental properties of the system architecture the resulting assistance system is inherently dependable, flexible, and adaptable. Corresponding to the current situation and the users’ abilities the system changes the level of assistance during real-time operation. The resulting system behavior is evaluated using system performance and usability tests.
|Item Type:||Conference Item|
|Series Name:||International Workshop on the Design of Dependable Critical Systems|
|Date Deposited:||25. Nov 2009 15:03|
|Faculties / Institutes:||Service facilities > Institut f. Technische Informatik (ZITI)|
|Subjects:||004 Data processing Computer science|
|Uncontrolled Keywords:||dependability, system design, user needs assessment, requirement analysis, use cases, system architecture, evaluation|