On November 17, the three-day VisionChina 2022 China (Shenzhen) Machine Vision Exhibition was successfully concluded. As one of the few professional machine vision exhibitions in China, it attracts brands from all over the world in the fields of robots, motion control, etc.
As a core supplier of automation core parts, OPT, with its core software and hardware products of machine vision, appeared in this exhibition and demonstrated 3D, intelligent code reading and 2D vision detection solutions. Lithium battery and 3C industry application solutions have become the focus of attention.
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exhibition scene
3D visual inspection application, without missing any appearance details
In addition to focusing on industrial cameras, lenses, light sources and other machine vision core components, OPT also focused on the application of 3D vision in lithium battery, 3C and other industries.
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Machine vision hardware products
3D is the development trend of machine vision in the future, which endows machines with the 3D perception ability of "human eyes and brain". The 3D vision application displayed on site is designed based on 3D sensors and Smart3 vision software, which can output results or measurement data quickly and accurately; Moreover, these solutions have been widely used in the production line, especially in lithium battery, 3C and other manufacturing industries.
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Application of Computer Keyboard Thickness Measurement
For example, the appearance quality inspection applications such as lithium battery top cover, weld, sealing nail and blue film displayed on site, the solution products are mainly OPT (Opt) 3D sensors, and their products adopt the telecentric optical path design, which can avoid the occurrence of dark corner breakpoints or blind areas of vision in the included angle areas such as weld and sealing nail, without omitting any appearance details; At the same time, the image is binarized by visual software, and the use of welding defect detection algorithm can improve the detection efficiency and accuracy, and quickly output the area of weld concavity and convex defects.
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Appearance quality inspection of lithium battery weld and blue film
In the 3D vision application scheme, OPT also showed the glue road quality inspection that is widely used in the industry, such as 3C general electronic products, PCB boards, chips and other industries need to be glued, pasted and fixed, which has always been a major problem in visual inspection. Because the 3D sensor adopts a high dynamic algorithm, even if it is a transparent colloid, it can accurately locate the edge contour position of the colloid, with an accuracy of micrometer; On this basis, combined with the operator block of the visual software, the height and width of the glue road can be quickly calculated to determine whether there is a missing glue road.
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Quality inspection of glue road
Intelligent code reading application to quickly identify various special barcodes
In the field of machine vision applications, industrial code reading technology is widely used to track and manage the entire life cycle from the supply chain to finished products, and is an important way to achieve quality control. OPT has presented a number of code reading schemes this time, including the reading of deformed reflective barcode, glass secret code, camera DM code, etc., which basically covers the code reading requirements under the complex background of various industries.
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Mobile camera DM code reading
OPT intelligent code reader integrates multiple algorithms, such as depth learning, distortion correction, focusing and decoding, to achieve automatic focusing, fast and clear imaging, and is not affected by barcode blurring, low contrast, etc., so it can read codes efficiently and accurately.
For the code reading scene of arc surface simulated on site, the curved bar code is easy to produce distortion and reflection, which affects the code reading rate. The multiple light sources of the intelligent code reader are independent and controllable, which can adjust the appropriate light source lighting according to the field application environment, supplemented by the polarization filter design to remove the impact of reflective noise and obtain complete barcode information; At the same time, the deformed bar code is automatically corrected by the correction algorithm, and the reading is stable.
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Arc surface strip code reading
It is worth mentioning that OPT also demonstrated a relatively challenging code reading scenario, namely the application of one-time reading of batch barcode and mobile phone glass secret code. Among them, the batch barcode reading is a great test of the performance of the reader in processing data. The intelligent reader uses multi-core heterogeneous parallel computing, which can process the collected image information in a multi-threaded manner without waiting for decoding; The mobile phone glass secret code scheme uses a specific angle lighting method and a telecentric lens to achieve clear imaging, which can clearly present the invisible code on the glass product.
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