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Surveillance camera is a semiconductor imaging device, which has the advantages of high sensitivity, strong light resistance, small distortion, small size, long life, and anti-vibration. Surveillance cameras in security systems.
The generation of the image is mainly from the CCD camera at present, and the stored charge can also be taken out to change the voltage. It has the characteristics of anti-vibration and impact and is widely used.
On December 1, 2017, the "Specifications for English Translation and Writing in the Public Service Field" was officially implemented, which stipulated that the English name of the surveillance camera standard is: Surveillance Camera. By imaging color
(1) Color camera: It is suitable for identifying the details of the scene, such as identifying the color of clothes or scenes. Because of the color, the amount of information increases, and the amount of information is generally considered to be 10 times that of a black and white camera.
(2) Black and white camera: It is suitable for areas with insufficient light and areas where lighting equipment cannot be installed at night. When only monitoring the position or movement of the scene, a black and white camera with a resolution usually higher than that of a color camera can be selected.
By camera resolution
(1) Low-grade type with image pixels of about 250,000 pixels, color resolution of 330 lines, and black and white resolution of about 400 lines.
(2) Mid-range type with image pixels between 250,000 and 380,000, color resolution of 420 lines, and black and white resolution of 500 lines and below
(3) The image should be more than 380,000 dots, the color resolution is greater than or equal to 480 lines, the black and white resolution, and the high resolution of 600 lines or more.
By camera sensitivity
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