Conceptual Design and Evaluation of a Novel Self-transfer-Assistive Device

  • Kelifa Seid
  • Amarendra Kumar Das
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 134)


Research presented in this paper is part of a doctoral project and its aim is to determine whether the required muscle activities during transfer from a wheelchair using the proposed methods are within a limit, as well as to determine the suitable transfer mechanism through a conceptual design synthesis. Experimental data collection based on surface electromyography is conducted on six healthy subjects to investigate the relationship between the grip force and muscle activities, thereby to decide the best supporting device which is ergonomically and biomechanically have an excellent interface with the users. Digital human modeling was adopted in order to evaluate the man–machine interference and an ergonomic fit. A paired sample t-test was conducted on the recorded RMS values of the EMG signals from the selected muscles and found a statistically significant difference between the two methods of transfer. Based on the EMG results, it has been observed that the assisted transfer condition requires no or a minimum muscular effort as compared to the non-assisted transfer. Finally, a proposed concept has been designed virtually is based on the findings from EMG results and ergonomic aspects.


Digital human modeling Design synthesis Electromyography 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of DesignIndian Institute of Technology GuwahatiGuwahatiIndia

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