Automobile near-infrared night vision system and control method thereof

Abstract

The invention discloses an automobile near-infrared night vision system. The automobile near-infrared night vision system is characterized in that according to the nigh vision system, a main controller is connected with a camera and a video display, the main controller is used for analyzing a night vision image which is collected by the camera, and the main controller controls an automobile high beam to be turned on to achieve nigh vision supplementary lighting after the current road environment meets the turn-on condition of the high beam. According to the automobile near-infrared night vision system, the high beam can be automatically controlled to be turned on or turned off through the combination of the road environment recognition characteristic identified by the image processing technique and road safety traffic rules, the high beam is fully used to achieve the supplementary lighting of the near-infrared night vision system, and safety and comfort of night driving are improved; meanwhile, cost of the near-infrared night vision system is reduced obviously, the night vision system can be quite easily assembled on automobiles on which no near-infrared night vision system is assembled before the automobiles leave a factory, and the near-infrared night vision system is not limited by the installation position of an infrared fill light.

Description

technical field [0001] The invention relates to the field of automobile active safety, in particular to an automobile near-infrared night vision system and a control method thereof. Background technique [0002] Car night vision systems can be divided into near-infrared night vision systems and far-infrared night vision systems. Any object with temperature can spontaneously radiate 8-14 micron electromagnetic waves to the surrounding space. The far-infrared night vision system realizes the thermal imaging of these electromagnetic waves through the far-infrared camera. The near-infrared night vision system needs to use a near-infrared light source for supplementary light, and use a near-infrared camera to image the near-infrared light or visible light reflected by the object. [0003] Most of the existing near-infrared night vision systems use halogen lamp supplementary light, laser supplementary light or infrared LED supplementary light for supplementary light. But the exi...

AI Technical Summary

Problems solved by technology

But the existing infrared night vision system still has deficiencies

For example, the patent US7222999 introduces a near-infrared night vision supplementary light scheme using halogen lamps and visible light filters. The halogen lamp supplementary light efficiency is very low and the beam divergence angle is large, which is not conducive to improving the night vision distance.

Patent US6429429B1 introduces another near-infrared laser supplementary light solution. High-efficiency supplementary light can be achieved by using a laser with a narrow spectrum. However, the operating characteristics of the laser are seriously affected by temperature, which does not meet the temperature requirements of the vehicle. The front windshield of the car It has strong absorption characteristics for infrared light, so the infrared supplementary light source cannot be placed on the inside of the front windshield in a slightly better environment

The most important problem is that this solution will cause the redness effect of the human eye, which does not meet the requirements of the automotive lamp regulations

[0004] Whether using halogen lamp supplementary light, laser supplementary light or infrared LED supplementary light, it is necessary to increase the infrared supplementary light source, which will significantly increase the cost of the near-infrared night vision system

And for those cars that are not equipped with a near-infrared night vision system when they leave the factory, if you want to install a near-infrared night vision system later, you will not be able to install it because you cannot install a fill light.

If the infrared supplementary light is installed on the inside of the front windshield, the front windshield will greatly attenuate the infrared light, and the emitted infrared light will be very weak when it is received by the camera after being attenuated twice by the front windshield of the car. The effect of filling light will be very poor

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