Intelligent, real time auto intensity control of highway lights

Description

In this kit White Light Emitting Diode (LED) replaces the HID lamps where intensity control is possible by Pulse Width Modulation (PWM). The intensity control helps in saving energy at late nights during which the traffic density is low. It consists of a manual as well as an automatic mode of operation. The people can manually change the operation or in automatic mode, the system operates according to a physical change in light.

This real-time auto intensity control is very useful to use the full kit to automate the street lights on roads, or the lights in stadiums, especially in stadiums where the total intensity of the light is assumed to be constant. Here the LDR (Light Dependent Resistor) senses the environmental intensity of light and accordingly regulates the voltage at its output. At the output, we have DC bulbs connected whose intensity changes accordingly.

• Microcontroller from the 8051 families is engaged to provide different intensities.
• The intensity gradually decreases from the full intensity and then finally OFF.
• It consists of a manual as well as an automatic mode of operation.