Q:Monitor the camera what is the zoom

The lens is equivalent to the human eye lens, if there is no lens, the human eye can not see any objects; if there is no lens, then the camera output image is a vast expanse of white, no clear image output, which with our home camera and camera principle Is consistent. When the human eye can not stretch the lens to the normal position, that is, people often say myopia, the front of the scene becomes blurred; camera and lens with a similar phenomenon, when the image becomes unclear , You can adjust the camera's back focus, change the CCD chip and the lens reference plane distance (equivalent to adjust the position of the human eye lens), you can blur the image becomes clear. Thus, the role of the lens in the closed-circuit monitoring system is very important. Engineering designers and construction workers should often deal with the lens: the designer according to object distance, imaging size calculation lens focal length, the construction staff often on-site commissioning, part of the lens is to adjust to the best condition.

Q:Home monitoring system which brand is better

Home surveillance camera is best wireless, do not need to be everywhere wiring. Wireless surveillance cameras can be placed anywhere, no wiring trouble. The only requirement is that you need to have a wireless router and place the surveillance camera at the location of the wireless router.

Q:Does the infrared surveillance camera automatically alarm when someone enters the monitoring range?

The camera itself does not work, through the acquisition card, or hard disk video recorder, you can detect the mobile body will alarm,

Q:Monitor the camera 1 road 4 what is the difference

Very simple This is for the camera's hard disk video recorder to the general are at least 4 Road 8 Road 16 Road 32 Road, a camera all the way, there are 16 points can be connected to 16 points is 16 cameras.

Q:960P HD network camera stored one day more G?

41G, vision of the world network is very good, I used

Q:Camera monitor the recorded file 1 hour how much G ah?

Analog surveillance camera video files per hour about 220M, digital surveillance camera video files per hour about 900M.

Q:What is the camera's shooting range? How much is the diameter?

Can you say what the next camera, mobile phone, computer, monitor, or what?

Q:The working principle of the camera with infrared light

Second, the infrared camera imaging principle In the night vision monitoring system, the conventional approach is to use the visible light, but this way there can not be hidden, easy to monitor the target and other shortcomings, so use less; the current hidden, scientific night vision monitoring Is the use of infrared camera technology. Infrared camera technology is divided into passive and active. Passive infrared camera technology is the use of any substance in the absolute zero (-273 ℃) are more than infrared radiation, the higher the temperature of the object, the more infrared radiation. The most typical of the cameras made with this principle is the infrared camera, but this special infrared camera is expensive and therefore limited to military or special occasions. The active infrared camera technology is the use of infrared light radiation "lighting" (mainly infrared light), the application of ordinary low-light black and white camera, color to black and white camera or infrared low-light color camera, feel around the scene and the environment reflected back to the infrared light to achieve Night vision monitoring. Active infrared camera technology is mature, stable, become the mainstream of night vision monitoring.

Q:What is the difference between monitoring the camera and the usual?

Monitoring the installation of the camera, generally need to use a few meters to tens of meters ranging from the transmission distance, but in accordance with the provisions of the USB standard, USB device, the longest transmission distance is 5 meters, so USB can not be used for long distance, that is, we use USB camera to do the first problem encountered monitoring. While the 75-5 / 128 video cable can transmit signals over long distances! (Up to 400 meters).

Q:Monitor the camera's focal length how to choose?

Third, because the lens focal length and horizontal perspective is inversely proportional, so both want to see far, want to see wide and clear, it can not be achieved at the same time. Each focal length of the lens can only be in a certain range to achieve the best monitoring effect, so if the monitoring of the distance and a larger range, it is best to increase the number of cameras, or the use of electric zoom lens with PTZ installation , Of course, this for the civilian use, some expensive, and practical will not increase greatly.