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An Ultrasonic Blind Guidance System for Street Crossings

  • Satoshi Hashino
  • Sho Yamada
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6180)

Abstract

This paper addresses the technical feasibility of a guidance system based on ultrasonic sensors to aid visually impaired people to cross a road easily and safely. A computer processes ultrasonic signals emitted by a transmitter, which is carried by the impaired user, and provides real-time information on the direction and distance to keep user on the correct track. Instead of time of flight, the system estimates user position by the order of received ultrasonic signals at multiple receivers. Experimental results are presented to discuss feasibility of this method.

Keywords

guidance system ultrasonic sensor cross-correlation 

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References

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    John, A.B.: New Developments in Mobility and Orientation Aids for the Blind. IEEE Trans. Biomedical Engineering 29(4), 285–289 (1982)CrossRefGoogle Scholar
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    Aoki, T., Yonezawa, Y., Itoh, K., Hashimoto, M.: Intelligent guide system by parametric sound beam for the visually impaired. In: Proceedings of the 5th International Conference on Computers Helping People (ICCHP) with special needs, pp. 637–643 (1996)Google Scholar
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    Petrie, H., Johnson, V.: Evaluation methodologies for navigational aids for blind people. In: Proceedings of 5th International Conference on Computers Helping People (ICCHP), pp. 637–644 (1996)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Satoshi Hashino
    • 1
  • Sho Yamada
    • 1
  1. 1.School of Computer ScienceTokyo University of TechnologyTokyoJapan

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