Vision systems are the most efficient ones as far as image processing based on machine vision is concerned. Machine systems resemble “human sight”, converting images into information. Eyeballs are replaced by professional cameras registering images, and the role of the brain is performed by computer software interpreting those registered images. Vision quality control is based on comparison of the controlled item to an ideal template. Cameras scan the product and detect any departures from the norm. A machine, just like a person, needs to learn certain things. Through scanning and collecting information on the products in databases, the system creates a “memory” and “knowledge” that allow it to detect a faulty item. Vision systems use cameras of great capacity to register physical traits of supervised products, in order to measure and control them. Basing on the “learned” ideal template, the system automatically detects faulty items and eliminates them from the production line.
Despite many similarities between vision systems and the human organism, one of the most striking differences is that the machine does not get tired and does not lose focus. This difference is crucial in work applied to fast moving production lines, especially during long hours. The human eye is unreliable and cannot observe as closely and precisely as needed in many production settings. Furthermore, the vision quality control systems are universally applicable, despite their technological sophistication. The systems are not created explicitly for a particular implementation, they are adapted to any given production line and products specifications.
Technically speaking, a vision system consists of an information collecting sensor, lighting, lens and data acquisition appliance along with software which allows the data processing.
The first component of any vision system is a set of cameras with proper lenses. There are different types of cameras: imaging cameras that scan the whole object or its features, line scan cameras used on mobile production lines and 3D cameras imaging the scanned item in three dimensions.
There are also several types of lenses. The most popular are fixed-focus lenses, varifocal lenses used in robotics, telecentric lenses applied to precisely analyze dimensions and pericentric lenses allowing to inspect the front and side view of the examined object.
The lighting used in vision systems is mainly the LED lighting. It is the most cost-effective solution and is also environmentally friendly. This sort of lighting comes in an array of light colors, which means the right length of light waves can be applied to a specific production line. The types of LED lighting used in vision systems are front lighting, back lighting, ring lighting, shadowless lighting, on-axis lighting, line lights, spotlights, as well as multispectal lighting.
Vision quality control systems have many advantages. They make production lines more efficient, they are safe, effective and precise. Your business can optimize costs and minimize faults in production just by implementing a great quality automatic quality control system.
At KSM Vision, we implement vision systems along the production route - through production processes and as far as all the logistics. For years, we have installed our systems in distribution centers, warehouses, and sorting plants, for companies specializing in food production, pharmaceuticals, cosmetics and construction. When you decide to work with us, you get the complex service: your company’s needs assessment, production process analysis, the correct software programming, the right system components choice, tests running and finally the system installation. We cooperate with the best manufacturers for the components we use, which combined with our knowledge and experience guarantees the best product you can get.