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  •     Infrared night vision cameras across three remote monitoring barriers


        Security market confusion, different standards of surveillance cameras is not something new. Previously, users in the purchase of surveillance cameras, night vision effect is often ignored, with the gradual improvement of people´s security awareness, monitoring requirements also will be increased monitoring of good and bad night vision, often determines the user´s purchasing needs.

        
    Reason why night vision surveillance can be achieved, infrared lamps credit; infrared light outward diffusion of infrared cameras photosensitive components, CCD or CMOS receiver into electrical signals and then processed into an image. In general, infrared light or infrared emission of the LED lights, play a complementary role of a light source for night surveillance. In the home monitoring system, how to properly play the role of infrared light, how to avoid errors in the time of purchase. Especially after the full-screen white or blurred, how to solve?

        
    Under normal circumstances, resulting in blurred the effect of infrared cameras mainly by four factors: the video cable is too long, the signal attenuation is too large; supply line is too long, insufficient power supply voltage; light interference, affecting the camera imaging; manufacturers vacuity, components insufficient performance. Whether these factors will affect the remote night vision surveillance, we look down.

        
    Manufacturers vacuity camera performance reference is not uniform

        
    Infrared surveillance cameras, distance and there are obvious differences in visual distance. Found that distance with infrared light, according to the distance of the emitted infrared light to reach the distance from a few meters to hundreds of meters or even several kilometers; visible at night from the monitor can see the clear effective maximum distance, due to the surrounding environment, surveillance cameras, cabling, etc., there will be different results.

        
    Some manufacturers use the user would like to see a clear "night vision" to capture the effect, "intentionally" in the surveillance cameras night vision parameters of the standard foot 200 m, 500 m data. Night vision effect in accordance with the infrared light, in the case of the good, the visual infrared monitor the distance it is difficult to break through the 150 meters, this mark. Thus, for remote night vision surveillance, infrared light may limit its development.

        
    Long-distance transmission power signal to the force

        
    The infrared night vision surveillance has a very demanding requirements for signal transmission and power supply. The video cable is too long, the total control distance, signal attenuation are unable to provide the drawbacks of long-range night vision surveillance. Observant users will find, if you want to provide good night vision, usually surveillance cameras, an external 12V power supply, which is not only a surveillance camera work and, more importantly, provide a good infrared effect at close range Power support. Thus, for remote night vision surveillance, video cable and power supply systems may become insurmountable gap.

        
    Surveillance cameras do not need to "mix and match" wind

        
    The past two years, the fashion industry more and more "mix and match" style, and for surveillance cameras, the effect of "mashups" may not be able to achieve the effect you want. "Perfect match" principle, we know, simply put, the components of the surveillance cameras are also Gordon.

        
    Color camera infrared sensing the degree of increase showed a decreasing trend with the distance, the principle of the CCD color camera determines the color cameras sense infrared as black and white camera, which explains why most of the night vision effect in black and white color to black and white cameras are so popular. If you are non-imaging results seriously, this surveillance cameras would hardly have become a "Zheng Yanxia".

        
    Night vision monitoring is enabled, it must be under the "low according to the Environmental. Therefore, the choice of the illumination function can not be overlooked. Select the camera illumination higher than the infrared light requirements, the effective distance of the infrared light will be affected to some extent, apparently remote effects will not be in trouble. To strengthen the surveillance cameras in the economy as a prerequisite for low-light capabilities, appropriate with the infrared light can achieve a better night vision surveillance effect, especially the outdoor remote monitoring.

        
    The above three points is a long-range night vision surveillance systems are often committed by technology and the concept of misunderstanding, network environment has HD monitor the achievements of the United States, then the next task is how to improve night vision surveillance results, although not keep up with the HD era, or at least most experience the feeling of SD, the future direction of development worth the effort

     

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