This is the circuit diagram of bidirectional visitor counter. It is a nice project. It counts the number of people present in a room or in a hall. It is generally installed at the door. Basically it consists of IR sensor(IR Rx and IR Tx). Microcontroller is the main part of this project for further processing.
I have implemented this project on proteus. IR sensor module is not available in proteus, this is the reason that i have used switch instead of IR sensor module.
Working: IR Rx continuously receives the signal generated from the IR transmitter. There are two sensor used, one counts the people going inside and another one counts the people going outside from room or hall.
When people will go inside room or coming outside from room then there is an interrupt in receiving signal. So that we detect no of people.
Counter will be initialized to zero when it is started. You can see in the figure that there is two gate, one is entry and another one is exit gate. If a person enters in room, obviously he will have to pass through the sensor installed at the gate then there is an interrupt in the signal receiving by IR Rx. It sends signal to microcontroller. so that counter will be increased by one each and every time people enters inside the room.
Same concept applied for Exit gate.
I will also provide the complete circuit diagram of IR sensor. You have to connect the microcontroller to pin 7 of LM358.
CLICK HERE TO VIEW PROGRAM IN ASSEMBLY LANGUAGE
I would say, that is an excellent project, since you are trying to keep in control something which is a basic element in everyone's life. We use Video Security Surveillance software for Video Tracking. Delopt
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