BASED SMART BLACKBOARD WIPING SYSTEM
X.Mercilin Raajini1 ,
G.Rajesh2 , V.P. Arun Pandian3, N.Vengadesh4
Assistant Professor, Department of EEE, Prince Shri Venkateshwara Padmavathy
Assistant Professor, Department of IT,
Anna university, MIT campus, Tamilnadu, India.
Abstract – Chalk dust generated in traditional blackboard is a
common problem faced in class rooms by students and faculty. This may lead to
many health issues to eyes, nose, mucous membrane and respiratory system like
breathing problems, irritation to tissues, hair loss etc and also cause issues
to the electronic devices used in class room. To overcome these health troubles
and to reduce the manual work, a smart blackboard eraser system is connotated
to erase the blackboard automatically. In this method, a roller wiper is placed
and fixed on blackboard and it moves left to right and right to left according
to the split-up made in blackboard using dc motor and collects the dust
automatically using vacuum cleaner. To push and pull the roller wiper a
servomotor is used and the position of the wiper is automated by an ARDUINO
board microcontroller. Thus it avoids dust flow to the environment thereby
preventing health issues and keeping the environment clean.
Arduino, Blackboard, Wiping, Dc motor, Roller.
Blackboards are the backbone in
classroom for effective teaching and learning purpose where chalk pieces are
used to write on the board. These chalk piece is a soft, a form of limestone
produce the chalk dust which leads to many health issues to human and produce
harmful effects to the equipments in class room123. It includes
irritation and allergies to skin, tissues , eyes and during inhaling it leads
to the problem related to respiratory system and when it observed by the skull
it cause severe hair loss456. To
overcome these health issues and to reduce the manual work, the arduino based
smart blackboard erasing system is introduced.
In this method,
a roller wiper is placed to wipe the blackboard and is fixed on it to make a
movement from left to right and right to left according to the split-up made in blackboard using dc motor
and collect the dust automatically using vacuum cleaner. To push and pull the
roller wiper a servomotor is used and the position of the wiper is automated by
a ARDUINO board microcontroller. Thus it avoids dust flow to the environment
thereby preventing health issues and keeping the environment clean.
et al., proposed an automatic chalkboard erasing apparatus 7 which spans the
board and has bearings running along the top and bottom. Electric motor is
carried by the long narrow light weight body .Manual and automatic switches are
placed for operation. Circular eraser used to erase the board and it contains
inner belts and pullers.
Rolland L Schlick et al.,
proposed an automatic blackboard eraser 8 where carriage is mounted for
longitudinal movement on the blackboard. Brushes are counter rotating and are
used for erasing purpose. Motor is mounted in the carriage which is used to
move the brush to and fro and after completing its process it return to its
Liu et al., proposed a structure of a multifunctional board eraser 9 in which
the two sides of long bar body are symmetrical and a shallow trough is
installed on the top of the body for embedding wiping cloth wrapped around a
class room becomes untidy with those dusts. Though dust free chalk pieces are being
manufactured, they produce few amounts of chalk dust lesser than normal chalk
pieces but still there are possibilities for the dust accumulation. Hence the
automated blackboard eraser can be used to avoid the above problems and to
reduce the manual work.
II ARDUINO BASED SMART BLACKBOARD
The Arduino integrated development environment (IDE) is a cross-platform application written in Java, and derives from the IDE for the Processing programming language and the wiring projects. It is designed to introduce
programming to artists and other newcomers unfamiliar with software
development. It includes a code editor with features such as syntax highlighting, brace matching, and automatic
indentation, and is also capable of compiling and uploading programs to the
board with a single click. A program or code written for Arduino is called a sketch.
traditional blackboard chalk dust is a common problem in the traditional
blackboard-eraser-chalk architecture 1314. Lots of improved blackboard
eraser structure came into being, but these improvements changed the original
wipe, or not fundamentally solve the problem, or too costly and difficult to
spread. Figure 1 shows the mechanical structure of the proposed arduino based
blackboard wiping system.
Mechanical structure of arduino based wiping system
consists of DC motors, servomotor, guide rails, roller, vacuum cleaner and an
ARDUINO board microcontroller. The real time automated black board eraser is
used to clean the board automatically and to absorb the dust produced during
erasing the board 15. DC motor which is used to move the roller wiper to
erase the split-up portion of the blackboard and it is controlled by switches.
DC motor placed inside the roller wiper is used to rotate the roller that is
wound with the erasing material. Vacuum cleaner is connected in the bottom of
the roller which is used to suck the dust 161718. ARDUINO board
microcontroller controls the entire operation of the system. Figure 2 shows the
bottom view of the roller wiper.
Fig2. Bottom view of
ARDUINO BASED WIPING ALGORITHM
Start the program.
Energize the circuit from the
Switches activated according to
the partitions made.
When the switches are turned on,
the roller wiper placed on blackboard will rotate and the blackboard will
Dust will be sucked by the vacuum
Stop the program.
The flowchart for the arduino based wiping system is shown in
Fig 3. Flowchart for
arduino based wiping system
Figure 4 shows the simulation set up for arduino based
blackboard wiping system.
Fig4. Simulation environment of arduino based
blackboard wiping system
1. Wiping full
In entire blackboard
erasing mechanism the roller wiper is moved from the initial position and
erasing the entire blackboard, DC gear motor is rotated in forward direction. If
erasing completed, the DC gear motor will rotate in reverse direction and the
roller wiper will come to initial position without touching blackboard using
central car locking system.
Fig5. Simulation for switch 1(full board)
2. Wiping first half of the blackboard
While erasing the first
half of the blackboard by roller wiper mechanism, the roller wiper is moved from
the initial position and erasing the first half of the blackboard, DC gear
motor is rotated in forward direction. When the erasing is completed the DC
gear motor will rotate in reverse direction and the roller wiper will come to
initial position without touching blackboard using central car locking system.
Simulation for Switch 2(first half of
3. Wiping second half of the blackboard
While eracing the second
half of the blackboard by roller wiper mechanism, the roller wiper is moved
from the initial position and erasing the second half of the blackboard, DC
gear motor is rotated in forward direction. When the erasing is completed the
DC gear motor will rotate in reverse direction and the roller wiper will come
to initial position without touching blackboard using central car locking
Fig7. Simulation for
switch 3(second half of black board)
The proposed work
demonstrates the usefulness of arduino based smart blackboard wiping system and
it overcomes the problem created by chalk dust which is produced during the
class hours. In proposed blackboard system, complexity and the time consumed to
process gets reduced compared to existing techniques. The chalk dust is
completely sucked by the desired pumps in our proposed approach and also partitions
are made on the programming to erase desired part of the blackboard. It is much
faster than the existing approaches and the size of the system is reduced. This
approach can be extended using crank slider mechanism and by using cameras we
can sense the desired part and erase the chalk dust alone. Vacuum cleaner can
be replaced by HEPA filter to reduce the size compared to our approach and in
future it can be extended to recycle the chalk dust produced to reproduce chalk
pieces so that the system can be more economical and environment free.
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to search about the blackboard erasers used.
for the duster to absorb the dust along with the vacuum.