OBJECTIVE & SCOPE OF THE PROJECT
Our
project focuses on meeting the tremendous growth of advertisement. Persistence of vision (POV) provides a
unique technique to display our messages for advertising in an efficient way
and proper utilization of provided space. It is much more attractive than LCD
displays or dot matrix displays for displaying messages.
Advertisement: In this modern era there is a growing need of advertising the
products & services. People get influenced by good advertisement. Persistence
of vision proved to be a very effective method for providing a visual image to
attract the consumers. Advertisement can be made much more attractive by two
dimension or three dimension visual image.
1.2.2 Entertainment:
Persistence of vision plays
a very vital role in entertainment point of view. It can be used in shopping
malls for displaying messages. It can also be used in film industry. Motion
pictures are based on the principle of persistence of vision. The display is
like any complex toy .We can make it for fun and diversion by using this
application in games and toys.
1.2.3 Animation: The Persistence of vision is the basic principle of
animation. This technique is also used in cartoon animation. Cartoon movies are
also the result of persistence of vision.
1.2.4 Education: If Persistence of vision is used in education field it will provide
a better way for interactive education. Many concept need to be explained in
three dimension view (i.e. structure of an atom) that can be easily
demonstrated by the help of this persistence of vision.
A class of display device described as “POV” is the one that
composes an image by displaying one spatial portion at a time in rapid
succession (for example, one column of pixels every few milliseconds). A two
dimensional POV display is often accomplished by means of rapidly moving a
single row of LEDs along a linear or circular path. The effect is that the
image is perceived as a whole by the viewer as long as the entire path is
completed during the visual persistence time of the human eye. A further effect
is often to give the illusion of the image floating in mid-air. A three
dimensional POV display is often constructed using a 2D grid of LEDs which is
swept or rotated through a volume.
Description:
3.2.1
Microcontroller: The microcontroller will act as an SPI master. It will
communicate to the LED driver via SPI bus. It will send serial commands to
write the registers on the LED driver chips.
3.2.2
LED driver: The
LED-driver controls the functioning of LED array and provides the desired
switching of LEDs.
3.2.3
LED Array: It is
an array of LED that will turn on/off according to the message to be displayed.
It displays the message in 2-D or 3-D pattern.
3.2.4
Motor/Driver System: This will provide the facility to rotate the onboard circuit
up to the desired speed that is sufficient for the principle of Persistence of
Vision.
3.2.5
Power Supply:
The power supply unit provides the power to microcontroller, led driver and motor/driver
system.
3.2.6
Sensor circuit and controller: To collect the RPM data needed for timing calculations, the
microcontroller is connected to a sensor circuit board. This circuit will sense
the rotation and will provide the information about the revolution per second.
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