The Auto-Dim of Vehicle Head Light using RF-waves

Abstract

The paper is about developing a cost effective and simple way to auto dim the head light of automobile using RF communication approach. Vehicles travelling at night usually face a problem of distraction for the drivers when an opposite vehicle(s) with high-beam switched on come about 200 meters apart from each other's vehicle. This project is about automatically diming the head light of opposite vehicles which has high-beam switched-on from high-beam to low-beam. This is done using the RF wave to communicate the proximity of the on-coming vehicles and also a photodiode to detect the overall intensity of the high-beam to the driver. Each vehicle is fitted with the RF transmitter and receiver to detect the proximity of the vehicles. A photodiode is to detect the intensity of the high-beam of the opposite vehicle, after confirming the proximity of the vehicle. Consider Two vehicle 'A' and 'B' travelling opposite direction to each other during night with their high beam switched on, once 'A' and 'B' come to about 200 meter to each other (this triggers the RF communication, the high beam of the 'A' vehicle start affecting the driver of the 'B' vehicle or vice-versa, this is detected by photo diode (which is activated only when RF communication is triggered. To prevent this distraction of the driver, the high-beam of the opposite vehicle is dimed to low-beam.