Design and Construction of Microcontroller Based Smart Solar Charge Controller with Automatic Brightness Controlling of Solar Based LED Street Light (original) (raw)

Bangladesh being an over-populated country needs to produce huge amount of energy to meet its people’s demands. On the other hand it is quiet impossible for her to provide them with sufficient energy with the conventional way of producing energy due to her being a developing third world country. Only 62% of her people have the privilege of using electricity. So apart from finding cost effective ways to harness energy we should also look forward to using the produced energy efficiently. In this project we look to find a way to reduce the pressure on grid energy by empowering the street lights using solar panels. In this regard we also focus on having a smart solar charge controller circuit for ensuring battery longevity. In this project PIC16F876A microcontroller has been used to sense different voltages and make some decision according to them. The CCP module of the microcontroller has been used for a variable duty cycle PWM signal to adjust the brightness of the LED street lights. By the use of LED street lights the reduction of the consumption of energy was ensured. Apart from this, it can also be used for the electrification of remote places using solar energy as the smart solar charge controller is cost effective and easy to implement.