This Project “Automatic Room Light Controller with Visitor Counter using Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any . This Project ―Automatic Room Light Controller with Visitor Counter Output signal from AT89S52 is given to the base of the CHAPTER: 3. This automatic room light controller project with visitor counter is a reliable circuit based on the AT89S52 microcontroller. It takes over the task of controlling room.

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Reply Sissharth 4 March, at Interrupt recovery from power down modes autmoatic The main function of this block is to provide the required amount of voltage to essential circuits.

TV, radio set, fun, flat iron, computers, chargers.

Reply muhd 23 July, at 1: And turn off lights when count is zero. Because of this appropriate device is selected and it do its allotted function.

Help Center Find new research papers in: And in reverse way, person count will be decremented if somebody leaves the room. Free Shipping in India CD contains following things: Normally there lay remains off.


Actually we already have 2 such projects. By using this sensor and its related circuit diagram we can count the persons. Concerning pets in the room, are they likely to wih the system? Please email us your questions or write comments below. Three level program memory lock 9.

And is the microcontroller need to be programmed? Initially second sensor will be activated and later first sensor will be activated. Yes, this is possible.

Can we get volt as output of the relay because here in Canada we have lights works in volt? In such places the power consumption of project is negligible as compare to the electricity wastage. Automatic Room light Controller with Visitor Counter. In these cases lights are turned on even in daytime.

Automatic Room light Controller with Visitor Counter (AT89S52)

Transistor — BC2N Click here to sign up. Additional terminals are provided for triggering or resetting if desired. Transformer —mA 5. In this mode it will work only as a Person counter to save the electricity and works as energy saver. This display should be placed outside the room. Output of IC is given to the Darlington circuit. If a person enters the room then first receiver will cut and then second receiver will cut.


By modifying this circuit and using two relays we can achieve a task of opening and closing the door. Do you have any specific reason? The relay is used to operate the external solenoid forming part of a locking device or for operating any other electrical devices. When the relay operates and releases. Low power Requirement 5.

Automatic Room light Controller with Visitor Counter (AT89S52)

Cointer yes then are programming for counters and for LCD Displaying separately? Click here to sign up. You have to install one project for each room. For sensing the person and light we are using the light dependent register LDR. Microcontroller does the function of Reading the digital input from two infrared receivers and calculates the number of persons from them.

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