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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Automatic Room light Controller with Visitor Counter (AT89S52)

Reply Rajkumar 6 September, at 4: It is an active low device, which means it gives low output when it receives the Infrared rays. When the relay operates and releases. Reply bhakti2 3 August, at For counting purposes 2. If you want con control them individually then we need to modify the circuit to add 2 more relays.

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 af89s52 d d e t e r m i n e d b y controllr h e capacitor and resistor in the circuit i. Output active low 6. Swap any object like mobile or your fingers not single finger in front of those sensors. The demodulated output signal can directly be decoded by a microprocessor.


Enhancement added to this project: The light will be only switched OFF until all counher persons in the room go out. Enter the email address you signed up with and we’ll email you a reset link. Reply Microtronics Technologies Post author 4 October, at 5: Relay provides isolation from the Microcontroller circuit. Reply encikpatrick 22 March, at 8: And turn off lights when count is zero.

Automatic Room Light controller section — Microcontroller contrroller on the Room Light when person count is greater than or equal to one. Light sensor — LDR will detect the sunlight in the room or we can say LDR is used to detect daytime If there is enough sunlight in the room which means it is a daytime then the relay will not room turned on even if autojatic person count is greater than zero.

LED should turn off when Transmitter is facing towards Receiver. By using this sensor and its related circuit diagram we can count the persons. Reply Roshan 17 January, at 1: AT 89S52 countet 4. Interrupt recovery from power down modes I got Output of project is as mentioned on website. Operates in both as table and monostable modes 4.

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Reply Microtronics Technologies Post author 23 July, at 5: Since this project uses 2 infrared sensors, it can be used as Bidirectional person counter as well. The phenomenon remains same that no project ever can be executed proficiently and efficiently without sharing the meticulous ideas, technical expertise and innovative thought put forwarded by the technical and non technical veterans.

Automatic Room light Controller with Visitor Counter (AT89S52)

When somebody enters into the room will be switched ON and when any one. Now swap object in reverse direction to decrement the count. We can even add Temperature sensor as per your requirement.

Remember me on this computer. Reply Microtronics Technologies Post author 31 December, at Internal filter for PCM frequency 3. Doubt concerning the placement of IR sensor in the door frame. Although there are different functions for LCD and person counter modules, but they are combined in a single program.