Smart Blind Stick With Ultrasonic Sensor Pdf

The stick uses ultrasonic sensors for obstacle detection.

Smart blind stick with ultrasonic sensor pdf.

Thus the obstacleswhich are in front can. Person suffering from night blindness cataracts glaucoma albinism or injury. Almost 30 million people are blind according to the recent who report. In this project we will learn how to design blind walking stick using arduino ultrasonic sensor hc sr04.

The blind stick is integrated with ultrasonic sensor along with light and water sensing. Obstacle detection is one of the major concerns for a fully or a partially blind person e g. A number of techniques for making a smart stick for blind people. Blind stick is an innovative stick designed for visually disabled people for improved navigation.

Presented here is a smart stick using arduino uno. An ultrasonic sensor is used for object detection from a variable distance and a vibration actuator is attached with the handle of the stick to provide vibration feedback to the user depending. These blind people are totally dependent on others as they can t walk alone. The stick also has an rf receiver which connects with an rf transmitter that acts as a remote for finding the stick on missing.

The ultrasonic sensors work efficiently in an angle of 45 degrees. Of course you can use a vibrator motor in place of buzzer and advance a lot more using your creativity. However the study conclusion shows that using the ultrasonic sensors would be an efficient solution to detect the obstacles. Ultrasonic sensor sends high frequency pulses these pulses reflects from object and takes as echo time between echo and trig is measured by the microcontroller or arduino which is.

Ultrasonic blind walking stick as shown in diagrams there are two openings in ultrasonic sensor first is transmitter or trigger and second is receiver or echo. We here propose an advanced blind stick that allows visually challenged people to navigate with ease using advanced technology. The smart stick is built on arduino pro mini. This arduino board is small enough to install on a regular stick and has buzzer ldr sensor ultrasonic sensor and a water detector sensor interfaced to it.