Abstract

Abstract: The project is plannedfor LED-based street lights that use solar energy from photovoltaic cells withan auto intensity control. For battery charging, a load controller circuit isused and an LDR is used to feel daytime ambient light. We also tried tocalculate solar cell parameters by acquiring multiple sensor data. In thisdevice, a microcontroller in the PIC16F8 family monitors various parameters ofthe solar panel, such as light intensity, voltage, current and temperature.During peak hours the intensity of street lights must be maintained high. Thestreet lights are activated in the dark and then automatically turned off atdawn with a sensor system Left Due to its low energy consumption and long life,LED lights are the future of lighting and quickly replace the world oftraditional lights. White LED diode replaces HID lamps where pulse widthmodulation can monitor strength. A programmable microcontroller from the 8051family uses PWM techniques, for energy savings on solar systems and also abattery safety charging controller to defend against overcharging, overchargingand deep discharging. A Light Dependent Resistance system (LDR) is used, whichgreatly decreases its resilience for sensing purposes in daylight. The lightintensity is controlled in the measurement circuit using an LDR sensor, avoltage divider law, a current sensor current and a temperature sensor. All thedata is shown on a PIC microcontroller interface of 16X2 LCD.

Keywords: Dual PWM intensity control,battery management , LED based solar street lighting