Automatic Room light Controller with Visitor Counter

Description: Main concept behind this project is to measure and display the number of persons entering in any room like seminar hall, conference room. LCD display placed outside the room displays this value. And when number of persons inside the room are zero, power supply inside the room can be cut using a relay interface.

You will get a CD with this project:
CD contains following things:

1) Project Report
2) Circuit diagram
3) PCB layout
4) Microcontroller program in assembley language
5) Hex file of the microcontroller code
6) Datasheets of all the components / ICs used in the project

Block Diagram:

Description in detail: It mainly consist of following blocks
1. Transmitter: We are going to implement the Person counter module using a 2 transmitters and 2 receivers. We are going to use Infra-Red transmitters because infrared beams are not visible to human eyes. Transmitter used are IR LEDs
2. Receiver: We are going to use a Infrared receiver. It is a active low device which means it gives low output when it receives the Infrared rays.
3. Microcontroller: This is the CPU (central processing unit) of our project. We are going to use a microcontroller of 8051 family. The various functions of microcontroller are like
I. Reading the digital input from two infrared receivers and calculate the number of persons from them. II. Sending this data to LCD so that the person operating this project should read the number of persons inside the room. III. Sensing the password using keypad and to check whether it is a correct password or a wrong password and rotate the stepper motor if the password entered is a correct password. IV. Sending the data to the computer using serial port. This data consist of number of persons inside the room and the status of entered password (Correct/wrong)
4. LCD: We are going to use 16x2 alphanumeric Liquid Crystal Display (LCD) which means it can display alphabets along with numbers on 2 lines each containing 16 characters.
5. PC Interfacing: We are going to use max 232 IC for pc interfacing, the values of number of persons inside the room and the status of entered password (Correct/wrong) will be sent to pc.

Application and Advantage:
1. Can be used in various rooms like seminar hall, where the capacity of room is limited and should not be exceeded. Project will display the actual number of persons inside the room.
2. Can be used in conference room, study rooms in colleges.

Future Development:
1. We can send this data to a remote location using mobile or internet
2. Voice alarm system can be added to indicate that room is full & persons can’t enter inside.
3. This helps in energy conservation.

Tags:  Energy saving, Energy saver

Project Photographs:

Project Cost :

5000/-

Buy this project:

Video of the project: Automatic Room light Controller

 

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Question and answers about this project:

Question: Why you have used Infrared sensors to counte the no of persons?
Answer: Advantage of using Infrared sensor is that IR rays are not visible to human eyes. Also IR rays are not affected by any other sources. e.g. If you use LDR as a sensor then it can be easily triggered by sunlight or any other sources of light.

Question: Which type of fan / lights can be controlled using this project? AC or DC ?
Answer: We have used Relay to turn on/off the fan or light. So we can use any type of fan / light. We can either use AC fan or DC fan as well. Relay provides isolation from the microcontroller circuit. Thus user can use fan operating on 12 volt (CPU fan) or a 230 volts AC fan.

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