EXTREME WHEELCHAIRING, A NEW FOUR-WHEEL DRIVE WHEELCHAIR WITH HYBRID MOTOR AND ELECTRONIC ASSISTANCE SYSTEM

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EXTREME WHEELCHAIRING, A NEW FOUR-WHEEL DRIVE WHEELCHAIR WITH HYBRID MOTOR AND ELECTRONIC ASSISTANCE SYSTEM
25 May 2006 - Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Comfortable, all-terrain and safe. A four-wheel drive wheelchair with hybrid motor and electronic assistance system helps the physically disabled live more independent lives. The innovative system even checks pulse rate and blood values and calls for help in emergencies.

"This technology offers wheelchair users a level of freedom previously unavailable," says Prof. Jürgen Wernstedt of the systems engineering applications center of the Fraunhofer Institute for Information and Data Processing IITB, who together with Otto Bock HealthCare GmbH developed the novel assistance system. "Our test driver, a multiple sclerosis patient who has been wheelchair-bound for many years, was enthused. For the first time in a long time, he was able to visit the Thüringer Forest with his family without having to rely on outside help."

Superfourin, as it's called, looks like a small all-terrain vehicle with wide, deep-treaded tires, four-wheel drive and roll bar. The robust wheelchair is not shy when it comes to traversing gravel, rocky or snow-covered paths. And with a high-performance hybrid motor, Superfourin can negotiate inclines of up to 40 percent without even breathing hard. The vehicle was designed and built by engineers at Otto Bock HealthCare GmbH. Researchers from the ITTB developed the electronic monitoring and emergency call system, which successfully underwent testing in the rugged conditions of the Thüringer Forest.

For the physically disabled, the new technology means not only independence, but security. The vehicle is equipped with a GPS system that continuously transmits its position to a control center, where a digital map shows its exact location. A display provides up-to-date technical information such as the fuel and battery levels, incline of the axles and the two or four-wheel drive setting. Vital parameters such as pulse rate and blood oxygen content can also be superimposed on the display. In emergency situations such as when the wheels are locked, the wheelchair flips over or if the patient's pulse suddenly begins to race, the system automatically sends out an alarm. "The system is even designed to enable individual drivers to monitor an entire fleet of wheelchairs," explains Dr. Andreas Wenzel of the IITB. "The technology creates the basis for offering new services such as a Superfourin rental service," adds Wernstedt. "This opens up a new market targeted towards the physically disabled and their families. With its versatility, the all-terrain wheelchair can drive over snow-covered mountains, mud flats and sand dunes."

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About: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
The Fraunhofer-Gesellschaft undertakes applied research of direct utility to private and public enterprise and of wide benefit to society. Its services are solicited by customers and contractual partners in industry, the service sector and public administration. The Fraunhofer-Gesellschaft maintains over 80 research units at more than 40 different locations throughout Germany. A staff of some 12,700, predominantly qualified scientists and engineers, works with an annual research budget of over one billion euros. Of this sum, more than € 900 million is generated through contract research. Two thirds of the Fraunhofer-Gesellschaft’s contract research revenue is derived from contracts with industry and from publicly financed research projects. The remaining one third is contributed by the German federal and Länder governments, as a means of enabling the institutes to pursue more fundamental research in areas that are likely to become relevant to industry and society in five or ten years’ time.

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