License plate recognition system do you know
Vehicle license plate recognition (VLPR) is an application of computer video image recognition technology in vehicle license plate recognition.
The license plate recognition technology can extract and identify the license plates in motion from complex backgrounds, and identify vehicle license plate numbers through techniques such as license plate extraction, image preprocessing, feature extraction, and license plate character recognition. The current technology level is alphabetical and numerical. The recognition rate can reach 96%, and the recognition rate of Chinese characters can reach 95%.
License plate recognition is widely used in the management of highway vehicles. In the Electronic Toll Collection (ETC) system, it is also the main means to identify vehicle identities in conjunction with DSRC technology.
In the management of parking lots, license plate recognition technology is also the main means of identifying vehicle identities. In the Technical Requirements for the Collection and Transmission System of Vehicle Image and Number Plates in Parking Garage (Field), which is built by the Shenzhen Municipal Bureau, the license plate recognition technology has become the main means of vehicle identification.
The license plate recognition technology combines with the electronic toll collection system (ETC) to identify vehicles. When passing vehicles pass through a crossing, there is no need to stop, that is, automatic identification of vehicles and automatic charging can be realized. In the yard management, in order to improve the efficiency of the entrance and exit vehicles, the license plate recognition is aimed at vehicles that do not need to collect parking fees (such as monthly trucks, free-of-charge internal vehicles), and build unattended expressways, exempting card access and non-stop access experience. Change the management mode of access to the parking lot.
Galvanized steel strip is the cold rolled or hot rolled, long and narrow strip of steel with different degrees of plating on a layer called (zinc, aluminum) raw materials. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between the substrate of hot dip galvanized steel strip and molten bath to form a corrosion-resistant zinc iron alloy layer with compact structure. The alloy layer is integrated with pure zinc layer and strip substrate. Therefore, it has strong corrosion resistance.
The first stage is pickling the whole coil of strip steel to achieve bright and clean surface. The second stage is hot-dip galvanizing or hot-dip galvanizing, and the third stage is the storage of strip steel after galvanizing. Galvanized steel strip has the characteristics of no rust and corrosion resistance for many years. It can not be affected by external adverse environment, and always maintain its own performance and appearance. In the process of using galvanized steel strip, in order to improve its operation efficiency and its own characteristics, we can carry out post-treatment on the finished galvanized steel strip to make its performance more excellent.
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Jinan Hengming Steel Co., Ltd , https://www.jnhengmingsteel.com
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