Briefly describe the important knowledge of industrial cameras

1. Steps to select an industrial camera
: Step 1: First, you need to know the system accuracy requirements and industrial camera resolution;
Step 2: You need to know the system speed requirements and industrial camera imaging speed;
Step 3: You need to combine the industrial camera with image acquisition Consider both cards together, because this involves matching the two;
Step 4: Price comparison.
2. How to use the accuracy required by the machine vision system to calculate the resolution (pixels) of the camera that needs to be selected?
Knowing the actual detection accuracy and inferring how many pixels an industrial camera should be used can be calculated through the formula: X-direction system accuracy (X-direction pixel value) = field of view (X-direction)/number of CCD chip pixels (X-direction); Y Directional system accuracy (Y direction pixel value) = field of view range (Y direction)/number of CCD chip pixels (Y direction). Of course, the theoretical pixel value must be obtained by comprehensive consideration of system accuracy and sub-pixel methods;
how to deduce what speed industrial camera should be selected based on the actual required detection speed?
System single operation speed = system imaging (including transmission) speed + system detection speed. Although the system imaging (including transmission) speed can be theoretically calculated based on the asynchronous trigger function, shutter speed, etc. of the industrial camera, the best method is to perform actual calculations through software. Test;
3. What do industrial cameras need to match with image grabbers for normal use?
Industrial cameras need to be matched with the image capture card before they can be used normally. Generally, they need to match the following:
a. Matching of video signals. For black and white analog signal cameras, there are two formats, CCIR and RS170 (EIA). Usually the capture cards are Support both industrial cameras at the same time;
b. Resolution matching, each board only supports cameras within a certain resolution range;
c. Special function matching, if you want to use the special functions of the camera, first determine the board used Whether the card supports this function, for example, if you want multiple cameras to take pictures 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 the
camera Whether it matches the interface of the board card. Such as CameraLink, Firewire1394, etc.