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.
UltrasonicSensor Signal
Processing Voice BoardMicro
Controller
Power Supply
UltrasonicSensor
ObstacleSensorUnit
Voice Board.
Power Supply.
Ultrasonic Transmitter & Receiver
Software Used :
Embedded C.
Keil Cross Compiler.
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