Hi
am Adama i
would like to get
details on
bidirectional
visitor counter
ppt . and
now am
need help on that pls
am kogi state polytechnic lokoja. kogi state Nigeria so and

Bidirectional Visitor Counter
Introduction:
Many times we need to monitor the person/people visiting some place like Seminar hall, conference room or Shopping mall or temple. This project can be used to count and display the number of visitors entering inside any conference room or seminar hall. This is a bidirectional counter which means it works in a two way. That means counter will be incremented if person enters the room and will be decremented if a person leaves the room. LCD displays this value which is placed outside the room.

This system is helpful for counting the number of people in an auditorium or halls for seminar to avoid congestion. Moreover it can also be used to check the number of people who have come to an event or a museum to watch a certain exhibit. Microcontroller is a reliable circuit that takes over the task of counting the number of persons/ visitors in the room very accurately. We will be showing bothe In count i.e. number of people entering the room and Out count i.e. number of people exiting the room on a 16x2 Alphanumeric LCD. An IR sensor is used to monitor the person entering and exiting the room.

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 89s52 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.