23-01-2010, 01:18 AM
[attachment=1374]
MULTISENSOR STRATEGIES TO SUPPORT BLIND PEOPLE: A CLEAR-PATH INDICATOR
Abstract :
The development of electronic sensing devices for the visually impaired requires knowledge of the needs and abilities of this class of people. In this project we present a rough analysis that can be used to properly define the criteria to be adopted for the design of such devices. In particular, attention will be focused on clear-path indicators, highlighting their role in orientation and mobility tasks. A new device belonging to this class is presented. The detector is based on a multisensor strategy and adopts smart signal processing to provide the user with suitable information about the position of objects hindering his or her path. Experimental trials demonstrate the efficiency of the device developed.
Project Description :
In this project of Multisensor Strategies to Support Blind People: A Clear-Path Indicator we propose a system which can detect obstacles for the blind people. In this new system we increase the range of the operating device to about 40 to 240cm which is possible only through obstacle Sensors. Here We are using ultrasonic sensor for detecting the obstacle. Ultrasonic Receiver is placed in the spectacle. And the transmitter placed in the walking stick. When the obstacle detect the receiver receives the signal from the transmitter. And indicate by voice. Two sensors are placed in the right and left side of the stick. For any obstacle detected we warn the person through Voice Board which gives warning for left and right side.
Block Diagram :
Hardware Used :
Obstacle Sensor.
Microcontroller.
Signal Processing.
Voice Board.
Power Supply.
Ultrasonic Transmitter & Receiver
Software Used :
Embedded C.
Keil Cross Compiler.
