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electronic circuit design for smart stick for blind person
Post: #1

what looks like the circuit diagram of smart stick?
Post: #2

Smart stick for blind is a machine that can follow a path. The path may be visible as a black line on a white surface (or vice versa) or it may be invisible as a magnetic field. Detect a line and maneuver the robot to stay on course, while constant correction of erroneous movements using the feedback mechanism forms a simple but effective closed loop system. As a programmer, you have the opportunity to "teach" the robot how to follow the line, giving it a human-like property of responding to stimuli.

The visually impaired find it difficult to detect obstacles in front of them, when walking in the street, which makes it dangerous. The smart stick comes as a proposed solution to enable them to identify the world around. A smart stick with infrared sensor to detect stairs and a pair of ultrasonic sensor to detect any other obstacle before the user, in a radius of 4 meters. On the other hand, another sensor is placed on the bottom of the bar for the sake of avoiding puddles. Voice prompts and the vibration motor are activated when any obstacle is detected. This proposed system uses built-in microcontroller system 18F46K80, vibration engine and ISD1932 flash memory. The stick is able to detect all obstacles in the range of 4 meters for 39 ms and gives a message of adequate respect enabling blind to move twice its normal speed because it feels safe. The smart stick is inexpensive, quick response, low power consumption, light weight and the ability to fold.
 

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