Electronic Tips Network Core Tip : This article mainly introduces the application status of machine vision at home and abroad, the application of machine vision in the automation industry, and the display of machine vision solutions of major semiconductor manufacturers (such as NI, TI, Altera, Atmel, etc.).
Machine vision (MV) refers to providing operation guidance for the execution of functions of equipment based on the results of image acquisition and analysis in industrial and non-industrial applications. Fundamentally, this is to provide "eyesight" or "vision" for "blind" devices. Doing so can significantly enhance the functionality of the device, thereby improving product quality, increasing productivity and reducing costs.
With the development of the automation industry, machine vision systems have become an emerging industry with huge market development space. In addition, due to the gradual transfer of global manufacturing centers to China, machine vision systems have become the focus of major semiconductor OEMs on the market.
The characteristic of the machine vision system is to improve the flexibility and automation of production. In some situations that are not suitable for dangerous work environment or artificial vision that is difficult to meet the requirements of manual work, machine vision is often used to replace artificial vision; at the same time, in high-volume industrial production processes, the use of artificial vision to check product quality is inefficient and the accuracy is not high , Machine vision detection method can greatly improve production efficiency and production automation. Moreover, machine vision is easy to realize information integration, and it is the basic technology for computer integrated manufacturing.
Application status of machine vision at home and abroad
In foreign countries, the popularization of machine vision applications is mainly reflected in the semiconductor and electronics industries, of which about 40% -50% are concentrated in the semiconductor industry.
In China, the application of vision technology began in the 1990s, because the industry itself is an emerging field, coupled with the lack of popularization of machine vision product technology, the application of the above industries is almost blank. At present, most domestic machine vision is foreign brands, such as Cognex, DALSA, Keyence, Omron, etc.
3D machine vision goes to the stage
With the improvement of economic level, 3D machine vision has begun to enter people's vision. At present, 3D machine vision is mostly used for rating fruits and vegetables, wood, cosmetics, baked goods, electronic components and pharmaceutical products. It can improve the production capacity of qualified products and scrap inferior products early in the production process, thereby reducing waste and saving costs. This feature is ideal for imaging product attributes such as height, shape, quantity, and even color.
In terms of industry applications, replacing human labor with machine vision technology can provide production efficiency and product quality. For example, in the logistics industry, machine vision technology can be used for sorting and sorting of express delivery. Most courier companies currently do not perform manual sorting to reduce the damage rate of items, which can improve sorting efficiency and reduce manual labor.
Machine vision becomes tomorrow's star in the automation industry
Because the machine vision system can quickly obtain a large amount of information, and it is easy to process automatically, it is also easy to integrate with design information and processing control information. At the same time, machine vision systems can significantly reduce inspection costs, improve product quality, and speed up production speed and efficiency. For modern enterprises, machine vision has become the new focus of the automation industry!
With the development of modern industrial automation, machine vision is widely used in various inspections, measurements and parts identification, such as automotive parts size inspection and automatic assembly integrity inspection, electronic assembly line components automatic positioning, beverage bottle caps Printing quality inspection, barcode and character recognition on product packaging, etc. The common characteristics of these applications are continuous mass production and very high requirements for appearance quality.
Usually this kind of highly repetitive and intelligent work can only be done by manual inspection. We often see hundreds or even thousands of inspection workers performing this process behind the modernized assembly lines of some factories. While the factory increases huge labor costs and management costs, it still cannot guarantee a 100% inspection pass rate (ie, "zero defects"), and today's competition among enterprises has not allowed even 0.1% defects to exist. At this time, people began to consider combining the rapidity, reliability, and repeatability of the computer with the highly intelligent and abstract capabilities of human vision, resulting in machine vision.
More application of the original semiconductor machine vision technology in industry
The characteristics of machine vision are automation, objectivity, non-contact and high precision. Compared with image processing systems in the general sense, machine vision emphasizes accuracy and speed, as well as reliability in industrial field environments. The major semiconductor manufacturers, see the following link for details:
NI company machine vision application program
　　 NI Machine Vision System-Technology Special
　　 NI Machine Vision Product Application Complete Technical Information Package
　　 Improve your PLC system with NI machine vision solutions
Texas Instruments Machine Vision Application Solution
Texas Instruments' machine vision is mainly used in: 3D Machine Vision, machine vision: camera, machine vision: frame grabber, banknote counter, fingerprint recognition, military and avionics, imaging, DLP, 3D biometrics and other fields.
　　 The design of early warning system for fatigue driving based on DSP
　　 DSP + ARM architecture processor brings powerful computing and control capabilities to machine vision
　　 Texas Instruments (TI) Da Vinci Video Solution
　　 Design and Implementation of Machine Vision System Based on DSP and FPGA
Altera's machine vision application solutions
With Altera's machine vision (MV) technology, you will no longer need to invest in labor to perform quality control checks. MV technology combines a high-speed camera and a computer to complete complex inspection tasks based on digital image acquisition and analysis. You can use the obtained data for pattern recognition, target sorting, robot arm control, etc.
MV applications include: defect detection, metrology, navigation, component tracking, recognition, optical character recognition and verification (OCR / OCV), pattern recognition, packaging, product, surface and network inspection.
　　 Research on Embedded Machine Vision Control System
　　 Design and Implementation of Machine Vision System Based on DSP and FPGA
　　 5 ways to increase the flexibility of industrial applications through FPGA
Atmel's machine vision application solutions
Atmel launches fast CMOS camera for industrial machine vision applications
——The integration of the electronic fan network, please indicate the source!
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