28-03-2011, 02:35 PM
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ABSTRACT
This project deals with “Development of an Embedded system for Automatic street light controlling with Sun Tracking” using micro controller AT89C52 and Light sensor named as light dependent resistor (LDR).
In our daily life we are observing street lights still on in day time also. In this type of conditions the electricity (power) is wasted. This project deals with how to avoid this condition using embedded system.
The project presented here is to on/off the street lights automatically when the particular person is out of reach or if he forgot to switch off the lights.
Here we are mainly using the sensor for detecting the light LDR (light dependent Resistor). The characteristics of the LDR are the resistance is very high when it is in dark and resistance is low when it is in light.
The Microcontroller is used to control the whole system, it monitors the sensor output, and according to the sensor condition the street lights are operated. The whole program is written in Embedded C and burned into the microcontroller ROM.
The AT89C52 is an 8-bit microcontroller with 8k bytes of flash ROM, 256 bytes of RAM is preferred due to its quick programming and ease of use.
COMPONENTS:
Power supply board
1. 8051 pcb
2. solar panel
3. AT 89s52
4. 40 pin ic base
5. ULN 2803 ---2
6. 16 pin IC base --2
7. stepper motor
8. 12 v relay
REQUIRED SKILL SET:
o Knowledge on KEIL microvision2 IDE
o Knowledge on 8051 programming
