The working mode of CCD camera is that the image of the object is focused on the CCD chip through the lens, and the CCD accumulates corresponding charges according to the intensity of light. Under the control of video sequence, the accumulated charge of each pixel is moved out point by point, and after filtering and amplification, a video signal is output.
When a video signal is connected to the video input of a monitor or TV, you can see the same video image as the original image. It is a semiconductor imaging device. In order to simplify the power supply of CCD camera, generally only one kind of power supply (12V) is input from the outside, and other power supplies with various voltage values in the camera are obtained through power conversion.
Extended data:
? The common imaging sizes of CCD are 1/2 "and 1/3". The smaller the imaging size, the smaller the camera size can be. Under the same optical lens, the larger the imaging size, the larger the field of view angle.
Correct selection of CCD camera is very important, because it directly affects whether the effect of the monitoring picture seen on the monitor at the end of the system can meet the design requirements of the system (in terms of picture range or image details), so correct selection of camera lens can optimize the design of the system and obtain good monitoring effect.
References:
Baidu encyclopedia -CCD camera