Machine vision technology is the use of computer to simulate the function of human vision, from the actual physical image acquisition processing, calculation, and finally the actual detection, control and application, the accuracy of its detection will directly affect the final quality of the product. In short, machine vision is the use of machines instead of human eyes for measurement, detection and judgment. The machine vision system refers to converting the ingested object into an image signal by a machine vision product (ie, an image acquisition device), and transmitting it to a dedicated image processing system, and converting into a digitized signal according to pixel distribution, brightness, color, and the like; image system pair These signals perform various operations to extract the features of the target, and then control the behavior of the device in the field based on the result of the discrimination.
Machine vision is characterized by increased flexibility and automation. In some dangerous working environments that are not suitable for manual work or where artificial vision is difficult to meet the requirements, machine vision is often used instead of artificial vision. At the same time, in large-scale industrial production process, manual visual inspection is used to check product quality with low efficiency and low precision. Machine vision inspection methods can greatly improve production efficiency and automation of production. Moreover, machine vision is easy to implement information integration, and is the basic technology to realize computer integrated manufacturing.
It is precisely because the machine vision system can quickly acquire a large amount of information, and it is easy to process automatically, and it is easy to integrate with design information and processing control information. Therefore, in modern automated production processes, machine vision systems are widely used for condition monitoring. Areas such as finished product inspection and quality control. In China, this kind of application is gradually being recognized, and the most direct response is that domestic demand for machine vision will increase.
The demand for machine vision in the domestic application determines the product. Only the product that meets the demand has the space for survival. This is the same law, and so is machine vision.
1. The future development of China's machine vision is mainly characterized by the following characteristics:
With the development of industrialization, the demand for machine vision will be on the rise. The larger part of machine vision development is in the semiconductor and electronics industries. According to relevant data in China, the global IC industry is showing signs of recovery. At the same time, the global economy The recession has enabled China's IC industry to gain market advantages, cost advantages, and talent return; the state has increased its planning for the strategic field of the integrated circuit industry, "informatization drives industrialization", and "new industrialization road" is integrated circuits. The industry has brought huge development opportunities, especially the market space for high-end products and innovative products. Design links, national strategic areas, 3C application fields, and traditional industrial applications have become key investment areas for the integrated circuit industry in the next few years.
China has become a hot spot for semiconductor investment in the world in recent years. In many parts of the country, especially in the Yangtze River Delta, new IC manufacturing lines and packaging test lines have been invested. China's semiconductor and electronics markets have begun to take shape, and such a strong semiconductor industry will need high-quality technology to back it up. . At the same time, he will have higher and higher requirements for high quality and high integration of products. Coincidentally, machine vision will help them solve the above problems, so the industry will be the best place for machine vision. At the same time, the demand for machine vision will flourish.
2. The standard of unified opening is the driving force behind the development of machine vision
With the gradual opening up of China's automation, the related product technologies will be gradually opened. Therefore, relying on closed technology is difficult to promote the development of the entire industry. Only by forming a unified and open standard can more manufacturers develop products on the same platform. This is also the driving force behind the development of China's machine vision towards internationalization.
3. Embedded products will replace board products
From the perspective of the product itself, machine vision will increasingly rely on PC technology and will be more closely integrated with other controls and measurements such as data acquisition. And embedded products will gradually replace board-type products, which is a growing trend. The main reason is that with the rapid development of computer technology and microelectronics technology, the application field of embedded systems is more and more extensive, especially the characteristics of its low-power technology has been paid attention to. In addition, the embedded operating system is mostly based on the C language, so the use of C high-level language for embedded system development is a basic work, the advantage of using high-level language is to improve work efficiency and shorten development. Cycles, more importantly, are products that are highly reliable, maintainable, and easy to improve and upgrade. Therefore, embedded products will replace board products.
4. Standardized and integrated solutions will also be the only way for machine vision.
In addition, since machine vision is a part of automation, there is no machine vision without automation. Machine vision software and hardware products are gradually becoming the core system of different stages in the collaborative manufacturing process. Both users and hardware suppliers regard machine vision products as The tool for information collection on the production line requires a large number of “standardization techniques†for machine vision products. Intuitively, it is gradually open with the opening of automation, and can be developed in accordance with the needs of users. Today, automation companies are advocating software and hardware integration solutions. Machine vision manufacturers should not only provide product suppliers in the next 5-6 years, but gradually move toward system integrators of integrated solutions.
In the next few years, with the development of China's processing and manufacturing industry, the demand for machine vision is gradually increasing. With the increase of machine vision products and the improvement of technology, the application status of domestic machine vision will shift from the initial low-end to the high-end. Due to the intervention of machine vision, automation will move toward smarter and faster directions. In addition, the user's needs are diverse and the degree of requirements is different. Then, personalized solutions and services will become increasingly important in the competition, that is, the replacement of standardized products with special customized products is also an orientation of the future development of machine vision. The application of machine vision will further promote the development of automation technology.
Machine vision related products
A typical industrial machine vision system includes: light source, lens, camera (including CCD camera and COMS camera), image processing unit (or image capture card), image processing software, monitor, communication / input and output unit.
(1) Machine vision core components:
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