Obstacle Searching Method Using a Simultaneous Ultrasound Emission for Autonomous Wheelchairs

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 240)

Abstract

A method to locate an obstacle and calculate the distance to it is proposed. The proposed method utilizes multiple ultrasound emitters that generate signals of identical frequencies and intensities. Corresponding sensors detect the reflected ultrasound signals, and the position of the obstacle is calculated based on the time of flight (TOF) of the ultrasound wave. This method is suitable for autonomous wheelchairs as it facilitates detection of the nearest obstacle, and yields more accurate estimation of the position.

Keywords

Assistive Technology Ultrasound Wave Ultrasound Signal Obstacle Detection Close Object 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2010-013-D00091).

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Copyright information

© Springer Science+Business Media Dordrecht(Outside the USA) 2013

Authors and Affiliations

  1. 1.Department of Rehabilitation Science and TechnologyDaegu UniversityGyeongsanKorea

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