Abstract
Technical aids allow elderly and handicapped people to live independently and supported in their private homes for a longer time. As a contribution to such technological solutions, two demonstrator platforms for a robotic home assistant—called Care-O-bot—were designed and implemented at Fraunhofer IPA, Stuttgart. Whereas Care-O-bot I is only a mobile platform with a touch screen, Care-O-bot II is additionally equipped with adjustable walking supporters and a manipulator arm. It has the capability to navigate autonomously in indoor environments, be used as an intelligent walking support, and execute manipulation tasks. The control software of Care-O-bot II runs on two industrial PCs and a hand-held control panel. The walking aid module is based on sensors in the walking aid handles and on a dynamic model of conventional walking aids. In “direct mode”, the user can move along freely with the robot whereas obstacles are detected and avoided. In “planned mode”, he can specify a target and be lead there by the robotic assistant. Autonomous planning and execution of complex manipulation tasks is based on a symbolic planner and environmental information provided in a database. The user input (graphical and speech input) is transferred to the task planner and adequate actions to solve the task (sequence of motion and manipulation commands) are created. A new method for sensor based manipulation using a tilting laser scanner and camera integrated in the head of the robot has been implemented. Additional sensors in the robot hand increase the grasping capabilities. The walking aid has been tested with elderly users from an assisted living facility and a nursery home. Furthermore, the execution of fetch and carry tasks has been implemented and tested in a sample home environment.
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References
Bischoff, R. 1998. Design concept and realization of the humanoid service robot HERMES. In Field and Service Robotics, A. Zelinsky (Ed.), Springer, London, pp. 485-492.
Dario, P., Guglielmelli, E., Laschi, C., and Teti, G. 1997. MOVAID: A mobile robotic system residential care to disabled and elderly people. In Proc. The First MobiNet Symposium, Athens, Greece, pp. 9-14.
Graf, B. and Hostalet Wandosell, J.M. 2001. Flexible path planning for nonholonomic mobile robots. In Proc. The Fourth European Workshop on Advanced Mobile Robots (EUROBOT), Lund, Sweden, pp. 199-206.
Graf, B. 2001. Reactive navigation of an intelligent robotic walking aid. In Proc. IEEE International Workshop on Robot and Human Interactive Communication (RoMan), Paris, France, pp. 353-358.
Hans, M. and Baum, W. 2001. Concept of a hybrid architecture for Care-O-bot. In Proc. IEEE International Workshop on Robot and Human Interactive Communication (RoMan), pp. 407-411.
Hans, M., Graf, B., and Schraft, R.D. 2001. Robotic home assistant Care-O-bot: Past-present-future. In Proc. IEEE InternationalWorkshop on Robot and Human Interactive Communication (RoMan), Paris, France, pp. 407-411.
Hostalet Wandosell, J.M. and Graf, B. 2002. Non-holonomic navigation system of a walking-aid robot. In Proc. IEEE InternationalWorkshop on Robot and Human Interactive Communication (RoMan), Berlin, Germany, pp. 518-523.
Jaouni, H., Khatib, Maher, and Laumond, J.P. 1998. Elastic bands for nonholonomic car-like robots: Algorithms and combinatorial issues. In Proc. 3rd International Workshop on the Algorithmic Foundations of Robotics (WAFR'98), Houston.
Katevas, N.I. 2001. Mobile robots in healthcare: The past, the present and the future. In Mobile Robots in Healtcare, N.I. Katevas (Ed.), Athens, pp. 1-16.
Khatib, Maher, Jaouni, H., Chatila, R., and Laumond, J.P. 1997. Dynamic path modification for car-like nonholonomic mobile robots. In Proc. IEEE International Conference on Robotics and Automation, Albuquerque, pp. 2920-2925.
Latombe, J.-C. 1996. Robot Motion Planning. Kluwer Academic Publishers: UK.
LaValle, Steven. 1998. Rapidly-exploring random trees: A new tool for path planning, Technical Report No. 98-11, Dept. of Computer Science, Iowa State University.
Rohrmoser, B. and Parlitz, C. 2002. Implementation of a pathplanning algorithm for a robot arm. In Rüdiger, Dillmann et al., VDI/VDE-Gesellschaft Meβ-und Automatisierungstechnik (GMA) et al., Robotik 2002: Leistungsstand, Anwendungen, Visionen, Trends, Düsseldorf: VDI Verlag, pp. 59-64.
Schraft, R.D., Schaeffer, C., and May, T. 1998. The concept of a system for assisting elderly or disabled persons in home environments. In Proc. The 24th IEEE International Conference on Industrial Electronics, Control & Instrumentation (IECON), Vol. 4, Aachen, Germany.
Quinlan, Sean and Khatib, Oussama. 1993. Elastics bands: Connecting path planning and control. In IEEE Transactions on Robotics and Automation.
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Graf, B., Hans, M. & Schraft, R.D. Care-O-bot II—Development of a Next Generation Robotic Home Assistant. Autonomous Robots 16, 193–205 (2004). https://doi.org/10.1023/B:AURO.0000016865.35796.e9
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DOI: https://doi.org/10.1023/B:AURO.0000016865.35796.e9