Smart Blinds-Guidance Stick

الملفات: 

Smart_Guidance_Stick_Report.doc

This project creates a new hope for blinds to be able to see their road and walk alone. This is by a smart stick that detect obstacles and sends a beep telling the user to be careful.
Scanning will be done using an ultrasonic transducer of 40KHz.
Scanning range is within the range of 1-1.7 meters.
Transmitting & receiving driver circuits is used to control the operation on the stage of ultrasound.
To detect obstacles, we use the method of delay detection for the received echo. Controlling this is done using a PIC16F877 microcontroller.
The logic we implemented in this project is the ultrasonic method of bats to see in the dark ; ultrasonic echo waves delay time.