Date of Publication :14th June 2017
Abstract: It is always infuriating while traveling in the nights due to the glare produced by the headlights. This is primarily due to high-intensity light rays from the car approaching towards us. At nights, due to presence of fog and street lights also contribute to the same. In the presence of fog at night, the driver gets dazzled by his own high beam as well and can lead to a disaster. If the vehicle can detect night fog, the high beam assist can be adapted accordingly. Modern cars come with manual headlight control, but some cases may lead to accidents due to negligence or ignorance of the driver. If two cars approach each other with a high beam of lighting, they produce a very high glare for both drivers. The solution is to either switch the headlights to a low beam or reduce the intensity of the LED headlight. We can have a system that is constantly monitoring every instance of intensity of light in the surroundings and upon which it takes the decision to switch to a high beam or low beam. The light intensity which is approaching in reversed direction to us is detected using the photo detector and processed. The wavelength of visible light varies from 400 to 750 nm, so photo detectors of Si and Ge can be considered. With the help of photo detector, the optical signal is converted to an electrical signal and this electrical signal is again converted into a digital signal. This digital signal is handled by the monitoring system for further decision making. A stepper motor is used to alter the reflector angle which is fixed to the LED headlight, based on the program implemented by the monitoring system.
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