Title :
Orientation aids for the blind using ultrasonic signpost system
Author :
Koshi, K. ; Kani, H. ; Tadokoro, Y.
Author_Institution :
Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Japan
Abstract :
This paper presents an ultrasonic signpost system for the blind, giving precise positional information of landmarks. The proposed system consists of a beacon placed at the location of navigational signs and a hand-held receiver carried by the blind. The beacon emits an ultrasonic wave modulated by a suitable speech message. As the blind traveller comes into transmission range, the message is provided by the receiver. The performance of the proposed system for orientation aids is also discussed
Keywords :
acoustic receivers; handicapped aids; navigation; ultrasonic applications; beacon; blind person; hand-held receiver; landmarks; navigational signs; orientation aids; precise positional information; speech message; ultrasonic signpost system; Acquired immune deficiency syndrome; Apertures; Frequency; Navigation; Radio transmitters; Speech; Ultrasonic transducers;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802665
