A Mobile Robostick for Visually Impaired People
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Abstract
God gave sense of perception to the human being is an important aspect of our life. But there are some unfortunate people have less ability of vision. The visually impaired have to face many challenges in their daily life. The problem gets bad when they visit to an unknown location. Only few of the navigation systems available for vision impaired people can provide active navigation through speech output. None of these systems work perfectly for both indoor and outdoor applications. The proposed system is very useful in blind people to indicate the alarm for avoiding accident. In system microcontroller is used to as oscillator to generate the frequency signal. Then ultrasonic transmitter gets generated frequency signal. Ultrasonic transmitter and receiver are fixed in front of the robostick. The sender transmits the ray towards receiver. The transmitting pulse has been changed according to the distance. From this, the microcontroller monitors the distance between the object and the stick and gives navigation through headphone jack to blind person.
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