NIGHT VISION TECHNOLOGY IN AUTOMOBILE

NIGHT VISION TECHNOLOGY IN AUTOMOBILEByP.Pavan Kumar Reddy(11931A0301)

CONTENTSIntroductionPrinciple of Operation Working Advantages and DisadvantagesPresent Day ApplicationsFutureConclusion

INTRODUCTIONIt is a system to increase a vehicle driver's visibility in darkness or poor weather beyond the reach of the vehicle's headlights.In this system Light waves [infrared (IR) ] are emitted by source ; a special cameras.collect small amounts reflected light and amplify it to generate display on cluster.These system are currently offered as optional equipment on certain premium vehicles.

PRINCIPLE OF OPERATIONNight Vision Technology in Automobile Works on two Phenomenon's.1)Active Illumination 2)Thermal Imaging

ACTIVE ILLUMINATIONThis system can detect pedestrians up to four times farther than the typical headlight range even in penetrating dense smoke.It actively detects people near the roadway, highlighting potential hazards and allowing drivers to have more time to react to them.Its high beam illumination warns the pedestrians as well. THERMAL IMAGING Thermal imaging is a heat-sensing technology that can see in complete darkness using temperature difference.

Electrical impulses are sent in the form of temperature values to an image signal processor that turns them into video data for presentation on a display.CAR WITH NVS MECHANISM

WORKINGSystems use an LCD that's mounted on the dash, in the instrument cluster, or integrated into the head unit. The front thermographic sensors detects the heat and processes the thermograms to display images on LCD.The IR sensor attached in vehicle's grille illuminates very high beam. REPRESENTATION

ADVANTAGES OF NVSReduce AccidentsGreater Range of About 300meters or 1000 feet.Can be Switched ON/OFF and doesnt effect the driver Style.Works in almost every weather conditions.

DISADVANTAGES OF NVSHigher cost of process.Large quantity of costly and complex equipment .Works very poor in warm weather conditions.Large sensors are required .

PRESENT DAY APPLICATIONAudi , BMW uses Thermal Imaging.

PRESENT DAY APPLICATIONMercedes-Benz uses Active Illumination.

WHAT NEXT ??FUTURE SCOPEVision System + GPS Navigation = Driverless vehicle

CONCLUSION The innovation and implementation of night vision system has a great impact on automotive session such as saving many lives from death reducing accidents at night.

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