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Safety assurance of assistive devices based on a two-level checking scheme
Hua-Sheng Lin1, Yi-Chu Chang, Chiun-Fan Chen
1Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.
Abstract:
The increasing number of physically challenged individuals has boosted the demand of powered wheelchairs. This paper is on the subject of a DSP (Digital Signal Processors) based assistive system, which is associated with a two-level checking scheme. The assistive system takes on the M3S (Multiple Master Multiple Slave) regulation for the assurance of safety. The CAN (Control Area Networks) embedded module in the DSP provides robust transmission of information within the system. The hardware interfaces based on the two-level checking scheme is implemented in input devices (e.g. joystick, head control apparatus) and in output devices (e.g. manipulator, prime mover motors).
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