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 Microtronics Technologies Post author 13 August, at 6: This circuit, in effect, produces a pulseat pin 3 whose width t is just the product of R1 and C1, i. We can implement this project using RFID reader.

Initially first sensor will be activated and later second sensor will be activated. In this mode it will work only as a Person counter to save the electricity and works as energy saver. Each typeemploys internal current limiting, controllsr shut down and safe operating areaprotection, making it essentially indestructible.

Automatic Room light Controller with Visitor Counter http: Reply Microtronics Technologies Post cpunter 10 October, at 3: Kaya ap ya bna sakty hn??

Automatic Room light Controller with Visitor Counter (AT89S52)

Reply supraja 23 July, at When person enters room then sensor sequence will be as below: Automatic Room Light controller section — Microcontroller turns on the Room Light when person count is greater than or equal to one.

I would recommend to add a comparator instead of a At89s25 to digital convertor. So when person goes in 1st sensor is cut and then 2nd sensor is cut. It is an active low device, which means it gives low vsitor when it receives the Infrared rays. But leaving the room, the infrared will do the task and the counter will decrement. Thermal Overload Protection 4. This project can be used in Cinema automaitc, multiplex, malls as well as in temples to count the number of person entering inside.


Reply Microtronics Technologies Post author 10 October, at Internal filter for PCM frequency 3. So when the IR rays are interrupted by any person then Microcontroller will receive a high pulse from the IR receiver.

We have provided a relay with this project. Microcontroller — AT89S52 2. IC — 3.

It auto activate the landline number and redial the last dialed number from the conventional telephone. Relay acts as a switch. When the last person leaves the room then counter goes to 0 and that time the relay will turn off, and light will be turned off.

LDR will detect the sunlight. You will get a CD with this project: We will reply you total cost including shipping charges. Following are the important modules in this project: We have to take precaution that the IR rays of first transmitter should fall only on first IR receiver and not on second receiver. Since relay is used, you can connect an AC bulb or DC bulb as per your requirement.

Reason behind choosing IR LED is, infrared beams are not visible to human eyes and they are not easily triggered by other sources in the environment. And take an example of a big seminar hall. 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.


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

The IC in the transmitter side is to generate 36 kHz square wave. 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. Below is the diagrammatic representation on how the two sensors should be placed on the door frame http: So if any animal crosses the sensor then the visitor counter will be incremented or decremented depending on the direction and then lights will be turned on if count is greater than zero.

Reply kashaf 14 April, at Please email us your questions or write comments below. Power off flag So that these places should not get over crowded to avoid congestion.

Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V 3.

This is the CPU central processing unit of our project. Low power consumption 7.

We have used Infra-Red transmitters. TV, radio set, fun, flat iron, computers, chargers.

This electronic setup auto activated whenever the intruder enters to the unauthorized no entry area. This is done by Relay. Reply Microtronics Technologies Post author 30 October, at 5: Hex file of the Microcontroller code 6. CL is to trigger theIC which is configured as monostable multivibrator.

And then we can turn on the project in evening time. Because of this appropriate device is selected and it do coutner allotted function.