Solar Based Automatic Curtain by Using Microcontroller
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 3
Abstract
Automatic Electronic Curtain Control System is a simple and powerful concept, which uses Relay as a switch to Open and close the Electronic Curtain automatically. By using this system manual works are removed. It automatically Close when the sunlight goes below the visible region of our eyes. It automatically Open under illumination by sunlight. This is done by a sensor called Light Dependent Resistor (LDR) which senses the light actually like our eyes. By using this system energy consumption is also reduced because now-a-days the manually operated Electronic Curtain are not switched off properly even the sunlight comes and also not switched on earlier before sunset. In sunny and rainy days, ON time and OFF time differ significantly which is one of the major disadvantage of using timer circuits or manual operation. This project exploits the working of a transistor in saturation region and cut-off region to switch ON and switch OFF the lights at appropriate time with the help of an electromagnetically operated switch. Electronic Curtain needs no manual operation of Open and Close. The system itself detects whether there is need for open or not. When darkness rises to a certain value then automatically Electronic Curtain close and when there is other source of light, the Electronic Curtain gets Open. The extent of darkness at which the light to be switched on can also be tailored using the relay provided in the circuit. Moreover, the circuit is carefully designed to avoid common problems like overload, relay chattering and inductive kick back in relay.
Authors and Affiliations
R. Chandana, R. Gowtham, V. Hariharan, M. Kanimozhi
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