The document outlines a project for a bidirectional visitor counter that tracks the number of people entering and leaving a room, controlling lights and fans based on occupancy. It reviews existing systems and proposes an automated model using sensors and a microcontroller to prevent energy wastage. The system can be applied in various settings such as homes, offices, and community halls for effective monitoring and energy conservation.

1. Bidirectional Visitor
Counter
Group Members
Name:- Roll no:-
Sarthak Zaware TETA22
Prathamesh Khamkar TETA61
Kedarnath Pallewar TETA57
Project Guide
Mrs. Sheetal Pawar
Dr.D.Y.Patil Institute of Technology, Pimpri, Pune-18
Department of Electronics and Telecommunication
Engineering

2. Problem Statement
Now a days it is difficult to keep a track of
people who visited a hall or any room , so we
intend to develop a device which can be
reliable to keep a track of people who visited
that hall ,when a person pass through that door
it will keep count of the numbers of people in
hall and it will display the count on display
monitor. Also if the count is more than zero
lights and fans will get on and if the count is
zero it will get off .

3. Objectives
• The main intention of bidirectional visitor
counter is to
• Design a system where in the number of a
person entering or leaving a room is kept
track of and displayed on LCD
• To turn on and turn off light and fan
recording to human presence in a room with
respect to light intensity & room temperature

4. Literature Survey
This chapter includes all the discussions on research done prior to
take up the project and understand the various methods that were
used previously. A detailed analysis of the existing systems was
performed. This study helped in identifying the benefits and also the
drawbacks of existing systems.
1) Automatic room light and fan controller with bidirectional visitor
counter In this paper , The aim of our project is to make a controller
based model to count the number of person entering into the room
and it lights up the room based on the light intensity of the room and
turn on fan automatically where the persons are sitting inside the
room. It is made to prevent unwanted electric power waste in
schools, colleges, houses and other working places. This whole
process is operated totally automatically by using its sensors.

5. 2) Automated Room Light Controller with Visitor Counter
In this paper , This Project “Automated Room Light Controller with 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 LED 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 OFF until all the persons in the room go out. The
total number of persons inside the room is also displayed on the display
monitor. 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 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.

6. Block Diagram

7. Explanation
This Project ―
Automatic Room Light Controller with Visitor Counter using
Microcontroller 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. MicrocontrollerAT89S52
continuously monitor the Infrared Receivers, When any object pass
through the IR Receiver's then the IR Rays falling on the receiver are
obstructed , this obstruction is sensed by the Microcontroller.

8. Expected Outcome
There are two transmitters and two receiver placed infront of
each other. If you swap any object (eg. mobile) or a finger
infront of those sensor then microcontroller increments or
decrements the counter . Once count is Non-zero , the room
light is turned ON .Now swap object in reverse direction then
the system will decrement the count and room light will turned
off and the count become zero

9. Application
a) This model can be implemented in party or
community halls where the number of people attending
a party
can be calculated easily.
b) It can be applied at offices.
c) It can be used at homes and classrooms to calculate
the number of guests getting inside.
d) It can also be used for electricity conservation by
automatically switching off the lights and fans when not
in use.