VOICE RECOGNITION AND VOICE GUIDANCE BASED GPS TURN-BY-TURN NAVIGATOR FOR BLIND WITH ULTRASONIC OBSTACLE AVOIDANCE

[attachment=16159]

The main aim of the project is to design a navigator system for the blind based on GPS, voice recognition and ultrasonic sensor for obstacle detection. This advantage of this device is voice based announcement for easy navigation i.e. the user gets the voice which pronounces the directions he need to move to reach his destination. Here instead of the alerting through alarm, the user can directly hear the location recorded by the user himself using voice recognition system.

GPS is the acronym for Global Positioning System. It is employed to find the position where the user is located on the earth. This information is provided by the GPS receiver with the help of the data it receives from the satellites.

Ultrasonic Sensor senses the obstacles in its path by continuously transmitting the ultrasonic waves. If any obstacle comes in its vicinity then the ultrasonic waves get reflected back to the system. The ultrasonic receiver senses these ultrasonic waves and this information are passed to the Microcontroller. The microcontroller gives alerts through voice message.


The main features of this project are:

1. Voice based destination selection.
2. Voice based alerts.
3. Obstacle detection.
4. Voice based navigation system.


The major building blocks of this project are:

1. Regulated Power Supply
2. GPS receiver.
3. Microcontroller.
4. Voice recognition system.
5. Voice circuit.
6. Crystal oscillator.
7. LED indicators.
8. Ultrasonic sensor.