The detection technology is one of the key factors for the quality assurance of modern industrial products. The anti -war of the detection technology reflects the scientific and technological level of a country to a low degree. At present, with the rapid development of modern industrial production technology, the requirements for measurement accuracy, measurement efficiency, and measurement automation of industrial products are getting higher and higher. The detection technology of modern industrial production has transformed from manual detection of low -efficiency and low accuracy to high -precision, high efficiency, real -time online, and non -contact detection. Advanced measurement technology can achieve comprehensive control of the production process, improve production efficiency and product qualification rate.  
 
With the continuous improvement of processing and manufacturing technology and the continuous improvement of processing technology, the detection method is required to have the corresponding measurement accuracy and the fast online measurement speed. However, the existing detection methods (such as a rigid calibration, thousands of feet, quantity, outline, three -coordinate measuring instrument, etc.), the disadvantage of low accuracy and large error is that they have high labor intensity, low detection efficiency, and difficult to take into account both speed and accuracy. The contradictions between them cannot meet the requirements of detection and high precision. At present, the increasingly rising computer vision technology can better resolve this contradiction.  
 
The purpose of computer vision is to give the machine's unique visual information processing capabilities, and apply computer vision to the field of admiration testing, thereby forming a special technology -computer visual detection technology. As an application of computer vision, visual detection is not only in visual perception, cognition, and pattern recognition, but also focuses on the precise detection and positioning of space geometric size. The computer vision detection system refers to the use of CCDs and other image sensors to comprehensively use image processing, precision measurement and other technologies to perform non -contact two -dimensional coordinate measurement system. As a new type of detection method. Visual testing has its unique advantages, such as a large number of procedures, non -contact, intuitive, fast and high detection accuracy.  
 
This detection system is a detection system based on surface scanning image collection. It is fixed with the CCD of the face array. The measured product is scanned and collected from the CCD movement method. First, the detection software initializes the motion control card when it starts, and each time the software is started, the mechanical position will be moved back to the zero position, and then the mechanical displacement platform is positioned in front of the CCD lens to prepare the scanning collection position.  
 
After starting the detection, the software system will control the servo motor through the total number and speed of the motion control card in the industrial control computer according to the motion distance position required by the mechanical displacement platform through the motor control card in the industrial control computer, to move the mechanical displacement platform horizontally, and return the displacement detection through the grating ruler to check the bit displacement detection Signal. At the same time, the CCD of the noodle array is set to collect images as an external synchronous signal trigger mode to ensure the synchronization of the image and movement. After the image is collected, do image processing analysis. Finally, the detection results obtained by the test are determined and the classification signal is output according to the judgment results.  
 
Compared with the traditional size measurement technology, this technology has the advantages of online testing, real -time analysis, and trying control, as well as efficient, economical, flexible and other advantages. This technology has more obvious advantages in micro -size, large size, complex structural dimensions and different types of curved surface size. At the same time, you can detect whether the product has bending and deforming, and the automatic position reissue function can solve the existence of left and right offset in the placement of the product; and multiple products can be detected at the same time (needed double cameras).