Obstacle Searching Method Using a Simultaneous Ultrasound Emission for Autonomous Wheelchairs

  • Byung-Seop Song
  • Chang-Geol Kim
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 240)


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.


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.



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


  1. 1.
    Brabyn J, Gerrey W, Fowle T, Aiden A, Williams J (1989) Some practical vocational aids for the blind. In: Proceedings of 11th annual international conference of IEEE engineering in medicine & biology society, pp 1502–1503Google Scholar
  2. 2.
    de Acevedo RLM (1999) Electronic device for the blind. In: IEEE AES systems magazine, pp 4–7Google Scholar
  3. 3.
    Tachi S, Komorya K, Tanie K, Ohno T, Abe M (1981) Guide dog robot-Feasibility experiments with Meldog Mark III. In: Proceedings of 11th international symposium on industrial robots, pp 95–102Google Scholar
  4. 4.
    Tachi S, Tanie K, Komoriya K, Abe M (1985) Electrocutaneous communication in a guide dog robot (MELDOG). IEEE Trans Biomed Eng 32(7):461–469CrossRefGoogle Scholar
  5. 5.
    Kim CG, Lee HG, Kang JH, Song BS (2007) Research of wearable walking assistive device for the blind. Korean J Vis Impair 23(1):147–164Google Scholar
  6. 6.
    Borenstein J, Ulrich I (1997) The GuideCane-a computerized travel aid for the active guidance of blind pedestrians. In: Proceedings of the IEEE conference on robotics & automation, New Mexico, pp 20–25Google Scholar
  7. 7.
    Shoval S, Ulrich I, Borenstein J (1998) The Navbelt-A computerized travel aid for the blind based on mobile robotics technology. IEEE Trans Biomed Eng 45(11):1376–1386CrossRefGoogle Scholar
  8. 8.
    Kang JH, Kim CG, Lee SH, Song BS (2007) Development of walking assistance robot for the blind. J Korean Sens Soc 16(4):286–293Google Scholar
  9. 9.
    Rentschler AJ, Cooper RA, Blasch B, Boninger ML (2003) Intelligent walkers for the elderly: Performance and safety testing of VA-PAMAID robotic walker. J Rehabil Res Dev 40(5):423–432Google Scholar
  10. 10.
    Shoval S, Ulrich I, Borenstein J (2003) Robotics-based obstacle-avoidance systems for the blind and visually impaired, NavBelt and the GuideCane. IEEE Robotics Autom Mag 10:9–20Google Scholar
  11. 11.
    Moon CS, Do YT (2005) Design of range measurement systems using a sonar and a camera. J Korean Sens Soc 14(2):116–124Google Scholar
  12. 12.
    Borenstein J, Koren Y (1995) Error eliminating rapid ultrasonic firing for mobile robot obstacle avoidance. IEEE Trans Robotics Autom 11(1):132–138Google Scholar

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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