PCBA color acquisition card based on fiber transmission

Abstract

The invention discloses a PCBA color acquisition card based on fiber transmission. The PCBA color acquisition card comprises: a color acquisition board and a product fixing table. The color acquisition board is comprised of a power interface, an RS bus interface, an RS bus outlet, a microcontroller, a color acquisition component, and a PCB board. The power interface, the RS bus interface, the RS bus outlet and the microcontroller are all mounted and fixed on one end of the PCB board. The color acquisition component is mounted on the PCB board away from the end of the power interface. The microcontroller is electrically connected to the power interface, the RS bus interface, and the RS bus outlet. The color acquisition board of the invention integrates a fiber fixing board, and can be externally connected with the fiber, so that the color of the product can be acquired collectively. Because the color is transmitted by the fiber, the color can be acquired in a fixed manner regardless ofwhether the product LED lights are on the front or the back. There is no need to increase product movement and rotation function, which makes the detection of product color more convenient. The coloracquisition board adopts RS485 communication, which can work simultaneously in multiple machines. When the product LED lights are too much, the invention can be easily extended.

Description

technical field [0001] The invention relates to the technical field of color recognition, in particular to a PCBA color acquisition card based on optical fiber transmission. Background technique [0002] There are many methods of color recognition, such as visual method, photoelectric integration method, camera image processing and color sensor. [0003] However, the visual method cannot accurately identify subtle color differences, and color judgment errors often occur. The color difference between two color sources, but the tristimulus value and chromaticity coordinates of the color source cannot be accurately measured. When taking photos with industrial cameras, according to different algorithms, most color recognition can be achieved, but industrial cameras are expensive because of the focal length. The reason is that when the volume of the product is large, it is necessary to make a larger dark room to filter out the ambient light, and to fill in the light for non-lumi...

AI Technical Summary

Problems solved by technology

[0003] However, the visual method cannot accurately identify subtle color differences, and color judgment errors often occur. The color difference between two color sources, but the tristimulus value and chromaticity coordinates of the color source cannot be accurately measured. When taking photos with industrial cameras, according to different algorithms, most color recognition can be achieved, but industrial cameras are expensive because of the focal length. The reason is that when the volume of the product is large, it is necessary to make a larger dark room to filter out the ambient light, and to fill in the light for non-luminous objects. The reflected light will also affect the collection while the light is filled. The color sensor has high accuracy in identifying colors and is small in size. , is an ideal color acquisition solution, but the disadvantage is that mature products are inconvenient when applied to non-standard equipment, occupy a large volume when arraying, and the cost will rise linearly. Therefore, we propose a A PCBA color acquisition card based on optical fiber transmission

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