If you look at a monitoring engineer with experience and responsibility, it depends on the time they are monitoring. Generally speaking, the light in the day is better, and the surveillance camera is better. On the contrary, after the light is dark in the evening, can your surveillance image be as clear as white? If not, then you should talk about engineering. Talk, either your device has a problem, or find a suitable time to re-edit the screen.
This article refers to the address: http://
Find the source of night vision monitoring such as daylight
In many communities, the surveillance system became a black or a white scene at night, and the surveillance became a "empty". This phenomenon is not uncommon. Of course, some may be in a strong light environment, the surveillance camera has not completed a good suppression, but more importantly, the most original infrared function of the surveillance camera has gone.
Night vision monitoring such as white 昼 infrared filter "fill light" is timely
The main purpose of infrared cameras is to be able to see images during the day and night. In order to improve the color purity during the day and the quality of the nighttime nighttime effect, switch to the infrared camera that does not sense the infrared filter and switch to the infrared filter at night. The main function of the infrared filter is to filter out some stray light. Only let infrared light and visible light pass. In order to make the night vision monitoring effect better, the filter actually filters out the useless light, and in effect, it realizes the function of "filling light".
Do not feel the difference between infrared and infrared
The main function of the infrared filter is to let only visible light pass through, and all other bands, including infrared light, will be filtered out. The infrared camera that does not sense the infrared filter is more pure in daytime; on the contrary, the infrared camera that senses the infrared filter enters the visible light and the infrared light, and the color will deviate from the actual color. If there is a halogen lamp, etc. In the case of special light, the color deviation will be more outrageous.
General surveillance camera and infrared surveillance camera (picture source Baidu)
If a surveillance camera has a built-in IR filter, then the infrared camera can't let the infrared light enter the camera at night, so the image will be black; this verifies that the night monitors a black instance. If the surveillance camera has a built-in infrared filter, the infrared camera can induce a black and white image by reflecting the infrared light at night.
The difference between a single filter and a double filter (Image by Baidu)
Many infrared cameras of surveillance cameras are standard, so can users change according to the actual environment? The angle of illumination of an infrared lamp is 80 degrees, which is equivalent to the angle of the 3.5mm fixed-focus lens; if the monitoring lens is visible If the angle is inconsistent with the angle of illumination of the infrared light, it will cause waste. As the focal length increases, the angle of view will be smaller, so the angle of the infrared light we choose should also change.
If the emission angle of the infrared light is too large, the imaging of the near edge will be too bright, forming a "light curtain" phenomenon; the far center is invisible, only one is white; if your monitoring system has such a problem, may wish to Check it yourself to see if the model is mismatched. Through the above analysis, I hope to have a better understanding of night vision without imaging; although this is not the absolute reason for the inability to image, it is definitely a problem and misunderstanding that users often encounter during use.
Different infrared fields are used in different fields of view (Image source Baidu)
We can understand the poor monitoring effect at night. After all, in addition to the surveillance camera itself, the infrared light is the key factor to determine success or failure. In fact, the author believes that if the surveillance camera is equipped with low illumination monitoring function, it may be supported without infrared. Night monitoring. However, there are no uniform standards for technical specifications, and applications such as low-illuminance cameras that can be applied in special fields or large open areas have become the reason why low-light monitoring products are difficult to popularize in the low-end security market. Perhaps this also shows that the future security technology will be developing in a more mature field.
LED Solar Street Lighting System
LED Street lighting is a fresh new alternative to traditional street lamps such as: LPS, HPS, or MH street lights.
LED lighting provides a multitude of advantages over conventional incandescent lights:
* Advantages of Our LED Solar Street Lighting Projects:
1). Green Energy, Lower Power Consumption, Save 60%-80% Than Others.
2). Higher power, higher brightness intensity, Good Color Rendition.
3). Save electricity cost. Save electric transformer and cable cost. Free maintenance
4). Environmental Impact - Eliminate Hazardous Disposal, Low Light Pollution, No Radiation.
5). Longer lifetime: Between 80000-100000 Hrs. If lighting 12 hrs/night, could use at least 12 - 22 Years
6). Less heat Generated compared to other sources,
7). Downward orientation of Light, could adjust lighting angles and lighting range and shape on the Ground to meet the road-Rectangular. Other lighting source just could give common round shape and small lighting range.
60W Solar Street Lights,60W Solar Street Lighting,Solar Led Street Light 60W,Solar Led Street Light Outdoor
Yangzhou Bright Solar Solutions Co., Ltd. , https://www.cnbrightsolar.com