Shri Embedded Projects: Ultrasonic Based Blind walking stick Projects

Ultrasonic Based Blind walking stick

Blind stick is an important for visually disabled people for navigation. Here an advanced blind stick that allows visually challenged people to navigate with ease using advanced technology. The blind stick is integrated with ultrasonic sensor along with light and water sensing. Ultrasonic sensors to detect obstacles ahead using ultrasonic sensor. On sensing obstacles the sensor passes this data to the microcontroller.

The microcontroller then processes this data and calculates if the obstacle is close enough or not. If the obstacle is not that close the circuit does nothing. If the obstacle is close then microcontroller sends a signal to sound a buzzer and vibration feedback. Also if it detects water and alerts the blind with same feedback with different frequency. One more feature is that it allows the blind to detect if there is light or darkness in the room. also help the blind people to find their stick if they forget where kept it. Then A wireless RF remote is used for this purpose. Pressing the remote button sounds a buzzer on the stick which helps the blind person to find their stick. Thus this system allows for obstacle detection as well as finding stick if misplaced by them.

Block Diagram:-