1 / 8

AUTOMATIC ROOM LIGHT CONTROLLER by V Swetha B Deepthi Priya

AUTOMATIC ROOM LIGHT CONTROLLER by V Swetha B Deepthi Priya. as. Functions of the controller. This controller performs the task of controlling the room lights as well as counting the number of persons in the room accurately

luce
Download Presentation

AUTOMATIC ROOM LIGHT CONTROLLER by V Swetha B Deepthi Priya

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. AUTOMATIC ROOM LIGHTCONTROLLER byV SwethaB DeepthiPriya as

  2. Functions of the controller • This controller performs the task of controlling the room lights as well as counting the number of persons in the room accurately • The total number of persons in the room is displayed on the seven segment display • When a person enters into the room , the counter is increased by 1 and the light glows • In the absence of person in the room , the light automatically goes off

  3. Circuit Diagram

  4. IR Sensor • A pair of LEDs can be used as IR sensors. • The first IR LED is used to emit signals • The second one receives the input and transmits the signals. • When an object comes within the range of the emitted IR , it reflects the IR back to the receiving LED • Then a signal is produced from the IR.

  5. Microcontroller • This is the CPU of our project • We used AT89S52 microcontroller • It receives the signal from the sensors • This signal is operated under the control of software which is stored in ROM • Microcontroller At89S52 continuously monitor the IR receivers • When any object passes through the IR receivers , then the IR rays falling on the receivers are obstructed

  6. This obstruction is sensed by the microcontroller and count is displayed on seven segment display. Crystal Oscillator • It is an electronic circuit that uses the mechanical resonance of vibrating crystal of piezoelectric material • The material creates an electrical signal with a very precise frequency

  7. Block Diagram 89S52 IRTX IRRX pP2.0 RELAY P2.1

  8. Advantages and future development • It can be used in various rooms like seminar halls , where the capacity of the room is limited and should not be exceeded • It can be used in our homes because we often forget to switch off our room lights • It helps in energy conservation • In future , we can send this data to remote areas using mobile or internet • Voice alarm system can be used to indicate that room is full & person can’t enter inside

More Related