project report on bidirectional visitor counter pdf

#PROJECT REPORT ON BIDIRECTIONAL VISITOR COUNTER PDF DRIVER#

Rest of connections are shown in the below circuit diagram.įirst we have included library for LCD and defined pin for the same. Data pin of LCD D4-D7 is also directly connected to arduino at D11-D8 respectively. RS and EN pin of LCD is directly connected at 13 and 12.

#PROJECT REPORT ON BIDIRECTIONAL VISITOR COUNTER PDF DRIVER#

And Relay driver transistor at digital pin 2. The outputs of IR Sensor Modules are directly connected to arduino digital pin number 14(A0) and 19(A5). Arduino sends commands to this relay driver transistor and then light bulb will turn on/off accordingly. So we added a relay driver circuit to get enough voltage and current for relay. Transistor is used to drive the relay because arduino does not supply enough voltage and current to drive relay. Relay Driver section: Relay driver section consist a BC547 transistor and a 5 volt relay for controlling the light bulb. This section will display the counted number of people and light status when no one will in the room. If you find any difficulty in working with relay, check out this tutorial on arduino relay control to learn more about operating relay with Arduino.ĭisplay section: Display section contains a 16x2 LCD. Arduino read these signals and send commands to relay driver circuit to drive the relay for light bulb controlling. The outputs of comparators are connected to digital pin number 14 and 19 of arduino. LM358 has inbuilt two low noise Op-amp.Ĭontrol Section: Arduino UNO is used for controlling whole the process of this visitor counter project. Here in this circuit we have used two comparators for two sensors. Then comparator compares both voltages and generates a digital signal at output. Potentiometer is used for setting reference voltage at comparator’s one terminal and IR sensors sense the object or person and provide a change in voltage at comparator’s second terminal. Sensor section: In this section we have used two IR sensor modules which contain IR diodes, potentiometer, Comparator (Op-Amp) and LED’s. There are some sections of whole visitor counter circuit that are sensor section, control section, display section and driver section. When any one enters in the room, IR sensor will get interrupted by the object then other sensor will not work because we have added a delay for a while. And counting is displayed on a 16x2 LCD through the controller. The sensor would observe an interruption and provide an input to the controller which would run the counter increment or decrement depending on entering or exiting of the person.

This project is divided in four parts: sensors, controller, counter display and gate.

It can also be used at gates of parking areas and other public places. This circuit can be used to count the number of persons entering a hall/mall/home/office in the entrance gate and it can count the number of persons leaving the hall by decrementing the count at same gate or exit gate and it depends upon sensor placement in mall/hall. with arduino microcontroller. This counter can count people in both directions. The project of “ Digital visitor counter” is based on the interfacing of some components such as sensors, motors etc. It is very interesting project for hobbyists and students for fun as well as learning. How they count the people and turn ON or OFF the light when nobody is inside? Today we are here with automatic room light controller project with bidirectional visitor counter by using Arduino Uno. Maximum data is FF hex which is 255.Often we see visitor counters at stadium, mall, offices, class rooms etc. Question: What is the maximum count that can be stored in this project?Īnswer: As the microcontroller used is an 8 bit microcontroller. If you use LDR as a sensor then it can be easily triggered by sunlight or any other sources of light. Also IR rays are not affected by any other sources. Question: Why you have used Infrared sensors to count the no of persons?Īnswer: Advantage of using Infrared sensor is that IR rays are not visible to human eyes. Youtube video coming soon Question and answers about this project: Video of the project: Bidirectional Visitor Counter

We can interface a GSM modem to send this data through SMS.

This project can also be used in industries.

This project can be used in seminar halls and classrooms.

This is one of the Sensor projects which has Infrared sensors involved in it.

Project report on bidirectional visitor counter pdf