International Journal of Engineering Trends and Technology (IJETT) – Volume 33 Number 8- March 2016
Automatic Room Light Controller with Visitor
Counter Desgined using Microcontroller
Rajat shah1, Deepak Rasaily 2, Tashi Rapden Wangchuk3, Roshan chettri4, Tsheme choden bhutia5
1, 4,5
Diploma of final year Student in Dept. of Electrical&ElectronicsEngineering, CCCT Polytechnic
,,32Sr. Lecturer in Dept. of Electrical&Electronics Engineering, CCCT Polytechnic
Chisopani, South Sikkim, India
Abstract — The electronic device nowadays is
rapidly taking its best position to ease the human
complexity of living life.
As per the concern of the human disabilities in
keeping counter of everything happening in and
around the world we limit this project to you to
increment the functioning of the visitors through the
light controlling system which we wind up naming
“automatic light controller with visitor counter”.
The audacity of this project will not only give a
count of the person entering the room but will also
light up according to the individuals entered. We set
up the program in such a way so that each
individual when undergoes this system will leave a
mark through the counter and lighting up the seven
segment display.
This project will negotiate as well as cooperate to its
level best if we put in better action and give it a
better way of exposure.
I. OUR WORK
This project ―automatic room lightcontroller with
bidirectional visitor counter is a reliable circuit that
takes over the task of controlling the room lights as
well us counting number of persons /visitors in the
room very accurately.when somebody enters into the
room then the counter is incremented by one and the
light in the room will be switched on and when
any one leaves the room then the counter is
decremented by one.the light will be only
switched off until all the persons in the room go
out. the total number of persons inside the room is
also displayed on the seven segment displays.
II. BLOCK DIAGRAM
Keywords— Microcontroller, Timer 555, LCD,
Introduction
This Project ―Automatic Room Light Controller
with Bidirectional Visitor Counter is a reliable
circuit that takes over the task of controlling the
room lights as well us counting number of persons
/visitors in the room very accurately.
When somebody enters into the room then the
counter is incremented by one and the light in the
room will be switched ON and when any one
leaves the room then the counter is decremented
by one.
The light will be only switched OFF until all
the persons in the room go out. The total number
of persons inside the room is also displayed on the
seven segment displays. The microcontroller does
the above job. It receives the signals from the
sensors, and this signal is operated under the
control of software which is stored in ROM.
Microcontroller AT89S52 continuously monitors
the Infrared Receivers. When any object pass
through the IR Receiver's then the IR Rays falling on
the receivers are obstructed. This obstruction is
sensed by the Microcontroller.
ISSN: 2231-5381
Fig.1 shows the block diagram.
BLOCK DESCRIPTION
POWER SUPPLY
Here we used +12V and +5V dc power supply. The
main function of this block is to provide the required
amount of voltage to essential circuits. +12V is
given to relay driver. To get the +5V dc power
supply we have used here IC7805, which provides
the +5V dc regulated power supply.
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International Journal of Engineering Trends and Technology (IJETT) – Volume 33 Number 8- March 2016
ENTER AND EXIT CIRCUITS
This is one of the main parts of our project.
The main intention of this block is to sense
the person. For sensing the person we are
using a TSOP 1738 sensor. By using this
sensor and its related circuit diagram we
can count the number of persons.
89S52 MICROCONTROLLER
1. It is a low-power, high performance CMOS 8-bit
microcontroller with 8KB of Flash Programmable
and Erasable Read Only Memory (PEROM).
2. The device is manufactured using Atmel’s highdensity nonvolatile memory technology and is
compatible with the MCS-51TM instruction set and
pin out.
3. By combining a versatile 8-bit CPU with Flash
on a monolithic chip, the Atmel AT89S52 is a
powerful Microcontroller, which provides a highly
flexible and cost effective solution for many
embedded control.
RELAY DRIVER CIRCUIT
1. This block has the potential to drive the various
controlled devices. In this block mainly we are using
the transistor and the lays. One relay driver circuit
we are using to control the light.
2. Output signal from AT89S52 is given to the base
of the transistor, which energizes the particular
relay, because of this, appropriate device is selected
and which performs its allotted function.
square wave, the period of which is determined by
the circuit external to IC 555.The astable
multivibrator does not require any external trigger
to change the state of the output. Hence the name
free running oscillator. The time during which the
output is either high or low is determined by the
two resistors and a capacitor which are
externally connected to the 555 timer.IR
Transmission circuit is used to generate the
modulated 36 kHz IR signal. The IC555 in the
transmitter side is to generate 36 kHz square
wave. Adjust the preset in the transmitter to get a 38
kHz signal at the o/p. Then you point it over the
sensor and its o/p will go low when it senses the IR
signal of 38 kHz. The IR transmitter will emit
modulated 38 kHz IR signal and at the receiver we
use TSOP1738 (Infrared Sensor).The output goes
high when there is an interruption and it return
back to low after the time period determined by
the capacitor and resistor in the circuit i.e.
Around 1 second.CL100 is to trigger the IC555
which is configured as monostable multivibrator.
Input is given to the Port 1 of the microcontroller.
Port 0 is used for the 7-Segment display purpose.
Port 2 is used for the Relay Turn On and Turn off
Purpose.
III. CONCLUSION:
This project deals with the usage of the energy in
this competitive world of electricity. This project is
efficient enough to let someone know about the
accuracy of the person entered and have taken the
exit from the room. This project saves more electric
power than it seems and also collaborates the
knowledge of electric and digital study. One can be
knowledgeable about two different study at the same
time with this project. It not only teaches us about
the functioning of the but also teaches us how we
can preserve electricity even in the electricity based
project.
Reference
[ 1] Aarfin
Circuit connection:
A. Circuit description:
This circuit diagram shows how a 555 timer IC,
configured to function as a basic astable
multivibrator.The astable multivibrator generates a
ISSN: 2231-5381
Ashraf, Deepak Rasaily, Shubham Kumar
―Biometric Attendance System Using Microcontroller‖
International Journal of Engineering Trends and Technology
(IJETT), ISSN: 2231-5381, Volume-32, Issue-6, February
2016.
[ 2] Rahul Ranjan Singh, Deepak Rasaily, Rishu Kumar
―Wireless Control Robot movement System Designed Using
Microcontroller‖ International Journal of Engineering
Trends and Technology (IJETT), ISSN: 2231-5381,
Volume-32, Issue-5, February 2016.
[ 3] Manish Kumar, Deepak Rasaily, Anup Neopaney
―Cellphone Controlled Car Designed using Microcontroller‖
International Journal of Engineering Trends and Technology
(IJETT), ISSN: 2231-5381, Volume-32, Issue-4, February
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International Journal of Engineering Trends and Technology (IJETT) – Volume 33 Number 8- March 2016
[ 4] Das, S., Toya, L., Green, Perez, B., and Murphy, M. M.,
―Detecting User Activities using the Accelerometer on the
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[ 7] Annie P. Oommen1, Rahul A P2, Pranav V3, Ponni S4,
Renjith Nadeshan5,‖Design and Implementation of a Digital
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Acknowledgement‖ International Journal of Engineering
Trends and Technology (IJETT), ISSN: 2231-5381,
Volume-32, Issue-5, February 2016
[ 10] Mukesh Kumar Thakur, Ravi Shankar Kumar, Mohit
Kumar, Raju Kumar ―Wireless Fingerprint Based Security
System using Zigbee‖ , International Journal of Inventive
Engineering and Sciences (IJIES) ISSN: 2319–9598,
Volume-1, Issue-5, April 2013
Electronic Engineering at Centre for Computer and
Communication
Technology
(CCCTGovt.Polytechnic) Chisopani, South Sikkim, India.
[4]
Tsheme Choden Bhutia is a final year Diploma
student, Dept. Of Electrical and Electronics from
Centre for Computer and Communication
Technology, Chisopani, South Sikkim.
[5]
Roshan Chettri is a final year Diploma student,
Dept. Of Electrical and Electronics from Centre for
Computer and Communication Technology,
Chisopani, South Sikkim.
Authors:
[1]
Rajat Shah is a final year Diploma student, Dept.
Of Electrical and Electronics from Centre for
Computer and Communication Technology,
Chisopani, South Sikkim.
[2]
Deepak Rasaily is presently
associated with the Department of Electronics and
Communication Engineering at Centre for Computer
and
Communication
Technology
(CCCTGovt.Polytechnic) Chisopani, South Sikkim, India as
a Senior Lecturer since 2003 to till date.
[3]
Tashi RapdenWangchuk is
Sr.Lecturer in Department
ISSN: 2231-5381
of
Electrical
and
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