Obstacle Avoidance Method Study of Electric Wheelchair

Author

Tian Zhihong ; Xu Wenhui ; Liu Xiuhong

Author_Institution

Coll. of Electron. Inf. & Autom., Tianjin Univ. of Sci. & Technol., Tianjin

fYear

2009

fDate

23-24 May 2009

Firstpage

1

Lastpage

4

Abstract

Analyzing the characteristics of various sensors, a method of detecting obstacle and avoiding obstacle used in electric wheelchair is presented based on the requirement of electric wheelchair obstacle avoidance. Transmitting circuit which is composed by 555 timing chip and receiving circuit which is utilized by LM393 are designed for measuring ultrasonic distance. Receiving program with ADuC842 which makes use of improved arithmetic has small error and high speed. The data precision is higher and can reach cm level. The method can detect stumbling block availably when electric wheelchair is traveling. The technique of measuring distance is simple and useful.

Keywords

handicapped aids; sensors; wheelchairs; electric wheelchair; obstacle avoidance; sensors; Automation; Circuits; Costs; Educational institutions; Electric variables measurement; Infrared sensors; Semiconductor device measurement; Switches; Ultrasonic variables measurement; Wheelchairs;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Systems and Applications, 2009. ISA 2009. International Workshop on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3893-8

Electronic_ISBN

978-1-4244-3894-5

Type

conf

DOI

10.1109/IWISA.2009.5072979

Filename

5072979