"Industrial Camera Vision System" How to choose the correct machine vision industrial camera

When selecting a camera, you first need to know the system accuracy requirements and camera resolution. These parameters can be obtained through the formula:

After the theoretical pixel value is obtained, it must be considered comprehensively in combination with system accuracy and sub-pixel methods;

Secondly, you need to know the system speed requirements and camera imaging speed, which can also be obtained through the formula:

Although the system imaging (including transmission) speed can be theoretically calculated based on the camera's asynchronous trigger function, shutter speed, etc., the best way is to conduct actual testing through software to obtain more accurate values;

Next, we need to consider the camera and image capture card together, because this involves the matching of the two:

• a, Matching of video signals. For black and white analog signal cameras, there are two formats, CCIR and RS170 (EIA). Usually the capture card supports both cameras at the same time;

• b, Resolution matching. Each board only supports cameras within a certain resolution range;

• c, Matching of special functions. If you want to use the special function of the camera, first determine whether the board card used supports this function. For example, if you want to take pictures with multiple cameras at the same time, the capture card must support multi-channel. If the camera is progressive scan, then the capture card must support progressive scan;

• d, Matching of interfaces. Determine whether the interfaces of the camera and the board match. Such as CameraLink, Firewire1394, etc.

Finally, after considering the relevant factors of industrial cameras, compare the prices of various cameras, select the appropriate camera, and build a machine vision system.