subject: Guide: Select The Camera Under Low [print this page] Guide: Select The Camera Under Low Guide: Select The Camera Under Low
Illumination is defined as the extent of the object to be illuminated, with the flux received per unit area expressed in units of lux (Lux, lx), illuminance is the luminous flux of acceptance vertical Standard If the illumination light down tilt.
Low-light environment, in this popular low-light stress is a very dark environment, in the absence of the moon, the stars and the lights, the pitch-dark night, there should be out in low-light environment. In this environment, let Monitoring System Taking clear images, predecessors came up with many solutions, from the earliest color camera + lighting of compensation, day and night Low-light cameras Infrared cameras now, several solutions in integrated into the security people from generation to generation efforts.
Color camera + light compensation In low-light environment, with a visible illumination light sources, cameras capable of taking to the high quality image. This solution appears to the original, but it really is the most direct and effective way. Configure now works in the practical application of visible light illumination, waste of resources does not help Monitoring equipment Hidden, so this program is now rarely used. Preceded by a small number of works on the stairs, and storage and other places, in order to save resources, Lighting The infrared sensor attached to the installation of a switch or voice switches, switch delay circuit are inadequate because only a few seconds in bright light exposure to Crime Elements of the picture, but recorded no less than the whole process of committing the crime. If it is during the day are sufficient environmental light at night, they can make use of their light compensation, using this program I like airport security, 24-hour convenience stores, stations, waiting rooms and other places.
Infrared Camera Infrared camera is being inspired on a solution, the principle is to use invisible infrared light instead of visible light to light. On infrared camera, we certainly have a lot of sighs.
2001, when the three Chen technology produced the first infrared camera, many Contractors That this is a deformity of the product, they would never think of infrared cameras today have such a good market. Serge Abou, 2003 meeting in Beijing, only three Chen technology booth with infrared cameras placed, and in Beijing, Serge Abou, the 2008 conference, more than 3200 booths, so long as the product booth with the camera, without exception, placed with infrared camera.
We all think that infrared camera technology low, market demand, the company launched infrared security products is unprecedented emotions, so that a wide variety of information to consumers stunned. The infrared camera itself has a color cast, heat, infrared light power attenuation and other weaknesses, which makes infrared camera in the distance and the life of the greatly reduced.
Despite technical difficulties inherent in infrared cameras, but in engineering applications, or a rapid promotion. I am the end of 2007, according to market research in Beijing, the real data, the case of infrared camera works more than 58% market share, to the end of 2008, has reached 63%, and there is an increasing trend. Do something before the government's major projects, project cost provider regardless of price, selection has always been the bolt, or one foreign model. But in recent years due to financial budgets and competitive pressures, in the program design will take into account spend infrared camera. Some plants, rented houses, chain stores, hotels, hotels, restaurants, cafes and other entertainment clients will make a request to use the infrared camera can see at night. And in China's "Green City", "police training and technology" project, started infrared camera application. We can pay attention to schools, banks, high-speed intersection, border stations and other important facilities, the total figure could see the infrared camera. Of course, one factor is low because the cost of infrared cameras. On the other hand, in the text referred to the three low-light environment solutions, infrared cameras can not only light (illumination 0LUX) where imaging products, which is the biggest advantage of infrared cameras.
View of the existence of infrared light infrared camera angle, camera angle with the problem, so when buying infrared cameras have to pay attention to some details. The most basic standards such as during the day can not buy a serious color cast, clear images at night. However, many unfair methods of competition also commenced in the surrounding of this measure, some of the current increase in LED infrared night clear enough, but life is also attenuated. There are many manufacturers of infrared cameras in the infrared range to make a fuss, even if we know in different environments, the infrared light reflection is strong or weak, in fact, purchase infrared cameras should be determined according to the specific installation environment, such as: indoor can choose to close small power infrared cameras, power corridor walls should be chosen large infrared camera, of course, the choice of camera lens and infrared light emission point of view should only be configured as required. If it is installed outdoors, not only to take into account whether the environment will affect the absorption of infrared and red reflectance infrared light, such as green, black and other objects or water. Should also take into account the dust waterproof camera itself, for special occasions had to consider the mine level, and in northeast China, Korea or Russia will be required in components on low temperature capability.
