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A Wearable Airbag to Prevent Fall Injuries

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5 Author(s)
Tamura, T. ; Grad. Sch. of Eng., Chiba Univ., Chiba, Japan ; Yoshimura, T. ; Sekine, Masaki ; Uchida, M.
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We have developed a wearable airbag that incorporates a fall-detection system that uses both acceleration and angular velocity signals to trigger inflation of the airbag. The fall-detection algorithm was devised using a thresholding technique with an accelerometer and gyro sensor. Sixteen subjects mimicked falls, and their acceleration waveforms were monitored. Then, we developed a fall-detection algorithm that could detect signals 300 ms before the fall. This signal was used as a trigger to inflate the airbag to a capacity of 2.4 L. Although the proposed system can help to prevent fall-related injuries, further development is needed to miniaturize the inflation system.

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Information Technology in Biomedicine, IEEE Transactions on  (Volume:13 ,  Issue: 6 )