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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Port 0 is used for the 7-Segment display purpose. But i have a question. Remember me on this computer. The LTS is a 0.

Reply Rajkumar 6 September, at 4: In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. By using this circuit and proper power supply we can implement various applications Such as fans, tube lights, etc.

Reply Microtronics Technologies Post author 17 September, at 5: However for this we need to modify the circuit. It can be used to turn a single device or many devices at a time. We can even add Temperature sensor as per your requirement.

And counter will decrement if second sensor is interuppted first and then first sensor. So if two or more person enters in room without any gap between them then it will treat as a single pulse. Easy to use 3.

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The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory pro- grammar. I tried to replicate the circuit of the transmitter and receiver on a bread autmatic using the given components.

So when the Fisitor rays are interrupted by any person then Microcontroller will receive a high pulse from the IR receiver. The output goes high when there is an interruption and it return back to low a f t e r t h e t i m e p e r i o d d e t e r m i n e d b y t h e capacitor and resistor in the circuit i.

Human efforts to count the number of person is eliminated. Reply Felix 2 October, at 1: If there is no gap between two persons, then Microcontroller will sense that only 1 person has entered into countdr.

Reply Microtronics Technologies Post author 23 July, at 5: Wirh this sensor does not recognize the number of person. Project Report in pdf format and in word format.

Automatic Room light Controller with Visitor Counter (AT89S52)

Reply mbavu 8 October, at Ccounter somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any one leaves the room then the counter is decremented by one. Help Center Find new research papers in: Enter and Exit Circuits: To avoid this situation, sensors should be placed at the higher level from ground.

I have added image of how to install sensor on door on this webpage: Reset button switch 8. And this pulse will be given to microcontroller for further processing.


We will reply you total cost including shipping charges. Relay does not give any voltage output. Reply Oliver vincent 8 September, at 2: Reply Jridi hamza 16 May, at 8: Can we get volt as output of the relay because here in Canada we have lights works in volt? Reply Microtronics Technologies Post author 30 October, at 5: Whenever th person enters then buzzer should be turned on to indicate that maximum capacity has reached.

There counterr 2 transmitters and 2 receivers placed infront of each other. I got CD with all documents.

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

Remember me on this computer. The relay requires 12 volts at a current of around ma, which cannot provide by the microcontroller. We will vontroller a bulb holder to connect AC bulb.

These should be placed on the door frame, in-front of each other. Also if at all one wants to know the number of people present in room soaps not to have congestion, this circuit proves to be helpful. Transistor — BC2N And if any person leaves the room then second receiver will cut and then first receiver will cut.