What Is A Vision Sensor?

Working principle:
Vision sensors are: capable of capturing thousands of pixels of light from a whole image. The clarity and fineness of the image are often measured by resolution, expressed in the number of pixels.
Vision sensors have thousands of pixels that capture light from a whole image. The clarity and fineness of the image are often measured by resolution, expressed in the number of pixels.
After capturing the image, the vision sensor compares it with the reference image stored in the memory to make an analysis. For example, if the vision sensor is set to identify a machine part with eight bolts correctly inserted, the sensor knows that it should reject parts with only seven bolts or parts with misaligned bolts. In addition, the vision sensor can make a judgment regardless of where the machine part is located in the field of view, regardless of whether the part is rotated within 360 degrees.
Application areas:
The low cost and ease of use of vision sensors have attracted machine designers and process engineers to integrate them into various applications that once relied on manual, multiple photoelectric sensors, or no inspection at all. Industrial applications of vision sensors include inspection, metrology, measurement, orientation, defect detection, and sorting. Here are just a few examples:
In an automotive assembly plant, verifying that the glue bead applied by the robot to the door frame is continuous and of the correct width;
In a bottling plant, verifying that the bottle cap is properly sealed, the fill level is correct, and that no foreign matter has fallen into the bottle before capping;
In a packaging line, ensuring that the correct package label is affixed in the correct position;
In a pharmaceutical packaging line, verifying whether there are damaged or missing tablets in the blister pack of aspirin tablets;
In a metal stamping company, inspecting stamped parts at a speed of more than 150 tablets per minute, more than 13 times faster than manual inspection.