Design, manufacture and optimization of intelligent cane for blinds by avr microcontroller
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CitationReza, M. ve Malek, A. (2009). Design, manufacture and optimization of intelligent cane for blinds by avr microcontroller. Maltepe Üniversitesi. s. 253. ,
Sight is one of the most important blessing of God that in case privation of it, there are many problems for blind persons. Blind persons use of white cane for informing of obstacles and for finding suitable route, but application of it is not enough for their requests, so they are confronted with many dangers. The aim of this article is design, manufacture and optimization of electronic circuits in intelligent cane with advanced features and better application. In these electronic circuits we can determine distance and depth by ultrasonic waves. After sending waves by transmitter circuit and their encounter with an obstacle, receiver circuit receives return waves, then AVR microcontroller processes data, auditory alarms become active and LCD shows distance to an obstacle and the depth of hole. The basis of distance distinction is given by X = V t. X stands for distance, V is velocity of sound and t is the time of transmitting and receiving ultrasonic waves. The velocity of sound is 330 m/s - 340 m/s, but its changes depends on temperature and properties of matter in air. In this article we use of AVR ( ATMEGA8 ) microcontroller and have designed, manufactured and optimized transmitting and receiving circuits. Distance distinction is computed with our written program.
SourceInternational Conference of Mathematical Sciences
- Makale Koleksiyonu 
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