SPEAKING MICROCONTROLLER FOR DEAF
AND DUMB WITH DEVICE SWITCHING
Technical Specifications
Title of the project : SPEAKING
MICROCONTROLLER FOR DEAF AND DUMB WITH DEVICE SWITCHING
Domain : Robotics, Wireless Communication
Software : Embedded C, Keil, Proload
Microcontroller : AT89S52
Voice module : 1
Accelerometer : 1
Power supply : +9V,
500mA Regulated Power Supply
Crystal : 11.0592MHz
Applications : Military, Auto motives
Abstract:
Micro controller
based speaking for dumb and deaf is designed to give the signs, which are
preloaded in the device. It is microcontroller based device, which gives the
alert sounds just by using Hand gesture sensor, which are given some redefined
messages like asking for water, washroometc.., here the person can just give
the predefined gesture which indicates the sign of Water(example) then the
device sounds the same with some output volume.
Microcontroller is
the heart of the device. It stores the data of needs of the person. So that it
can make use of data stored whenever the person uses yhe device. This device
helps deaf and dumb people to announce their requirements. By this the person
who is near can understand their need and help them. This saves the time to
understand each other and ease in communication.
This device is
designed to provide with a greater advantage producing voice based announcement
for the users i.e., the user gets the voice which pronounces his need as and
when it is required.
“Speech”
and “gestures” are the expressions, which are mostly used in communication
between human beings. Learning of their use begins with the first years of
life. In human communication, the use of speech and gestures is completely
coordinated. Machine gesture and sign language recognition is about recognition
of gestures and sign language using gloves. A number of hardware techniques are
used for gathering information about body positioning; typically either
image-based (using cameras, moving lights etc.) or device-based (using
instrumented gloves, position trackers etc.), although hybrids are beginning to
come about. However, getting the data is only the first step. The second step, that of
Recognizing the sign or
gesture once it has been captured
is much more challenging,
especially in a Continuous stream. In fact currently, this is the focus of
the research.
First commercial product of gesture technology for general user launched
in 2003, 23 years after research works started .still games industry is the
main target of the products .but health, care home industries are also getting
focused gesture recognition becomes intuitive and natural.
There are important issues addressed by the researcher based on
traditional system usability. Natural intuition of the gesture control was
addressed by most of the research .natural connection with the group work like
meeting ,gesture recognitions providing feedback of the gestures through
visualization ,sound etc gesture training common or unusual gesture are some
issues which give a direction towards further research for elderly.
This project uses regulated 5v, 500mA power
supply. 7805, a three terminal voltage regulator is used for voltage
regulation. Bridge type full wave rectifier is used to rectify the ac output of
secondary of 230/12v step down transformer. The RFID module requires a separate
+5v power supply.
The major building block of
this project are:
1. Regulated
power supply
2. LCD
3. Led
Array
4. Voice
recording module
5. AT89S52
Microcontroller
6. Hand
gesture sensor
7. speaker
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