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 anushka 22 July, at 8: It auto activate the landline number and redial the last dialed number from the conventional telephone.

ELEX IDEA BLOG: Automatic Room light Controller with Visitor Counter (AT89S52)

Bidirectional Visitor counter section — It is bidirectional because we have used 2 sensors on a single door. We will provide a bulb holder to connect AC bulb. Theon-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

Suppose a seminar hall has seating capacity of then only people should be allowed inside room. Display — Microcontroller sends the person count to LCD, so that the person operating this project should read the number of persons cohnter the room.

Digital Visitor Counter can be used in various rooms like seminar hall, conference hall where the capacity of room is limited and should not be exceeded.


Automatic Room light Controller with Visitor Counter | Neeraj Sharma –

It shows microtronics website. The at899s52 function of this block is to provide the required amount of voltage to essential circuits.

Ligjt is it possible if we remove the transformer and directly supply 9volts to the circuit? Video of the project: Although designed primarily as fixed voltage regulators, these devices can be used with external components toobtain adjustable voltages and currents. Can we get volt as output of the relay because here in Canada we have lights works in volt?

Automatic Room light Controller with Visitor Counter (AT89S52)

Skip to main content. However for this we need to modify the circuit. Disc capacitor — ,33pF 7.

Or we have to dump? And this pulse will be given to microcontroller for further processing.

In this block mainly we are using the transistor and the relays. Microcontroller does the function of Reading the digital input from two infrared receivers and calculates the number of persons from them. And turn off lights when count is zero.

We will reply you total cost including shipping charges. Output active low 6. When number of persons inside the room is zero, lights inside the room are turned off using a relay interface.

Microcontroller — AT89S52 2. Automatic Room light Controller with Visitor Counter.

We can even add Temperature sensor as per your requirement. Output signal from AT89S52 is given to the base of the transistor, which we are further energizing the particular relay. Vsiitor is a waiting period of 5 seconds. The demodulated output signal can directly be decoded by a microprocessor. Reset button will reset the microcontroller.


AT 89S52 micro-controller 4. When the relay operates and releases. Reply Microtronics Technologies Post author 31 December, at Diode D2 is the standard diode one mechanical relay to prevent back EMF from damaging Q3 when the relay releases. However it will be a really complicated task since it involves lots of wiring connections.

And is the microcontroller need to be programmed?

We can send this data to a remote location using mobile or internet. This project can be used in Cinema halls, multiplex, malls as well as in temples to count the number of person entering inside. If controler then at what point we can connect the DC supply coz then we gave to skip the dc converter circuit? Since relay is used, you can connect an AC bulb or DC bulb as per your requirement. Automatic Room light Controller with Visitor Counter http: If the sensor 2 is interrupted first then the microcontroller will look for the sensor 1, and if it is interrupted then the microcontroller will decrement the count.