IOT BASED SMART STICK FOR BLIND PEOPLE

Computer Engineering

Safety and efficient mobility for blind people using SMART STICK For blinds, it is difficult to walk and know their surrounding without the help a stick. This Paper aims at assisting blind person to move around without a stick and enable to recognize important objects. Visually impaired people are the people who can't identify smallest detail with healthy eyes. Those who have the visual acuity of 6/60 or the horizontal extent of the visual field with both eyes open less than or equal to 20 degrees, these people are considered blind . Such people are in need of aiding devices for blindness related disabilities. As described in 10% of blind have no usable eyesight at all to help them move around independently and safely. Visually defective people find difficulties detecting obstacles in front of them, during walking in the road, which makes it dangerous. The electronic aiding devices are designed to solve such issue. The smart stick comes as a proposed solution to enable them to identify the world around. We propose a solution, represented in a smart stick with proximity sensor to identify stair-cases, obstacles and ultrasonic sensor to find any other patch holes in front of the user, within a range of 1 meters. Moreover, another sensor is placed at the bottom of the stick for the sake of avoiding puddles. Vibration motor and Speech warning messages are activated when any obstacle is detected. This proposed system uses the micro embedded system raspberry pi, vibration motor and GPRS shield to track the blind people. The stick is capable of finding all obstacles in the range 1 meter during 1s and gives a suitable respect message permit blind to move twice his normal speed because she/he feels safe. The smart stick is of low cost, fast response, low power consumption, light weight and ability to fold.

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