The principle of the vehicle automatic identification system is to identify the number of the license plate by taking pictures of the vehicle traveling on the road through the camera. The process involves: vehicle detection - image acquisition - preprocessing - license plate location - character segmentation - character recognition - result output.
Vehicle detection: It can detect the passing of the vehicle by various methods such as buried coil detection, infrared detection, video detection, etc., and trigger image capture and capture.
Image acquisition: Real-time, continuous recording and acquisition of passing vehicles through high-definition video capture.
Preprocessing: noise filtering, auto white balance, auto exposure and gamma correction, edge enhancement, contrast adjustment, etc.
License Plate Positioning: Rows are scanned on the grayscale image after image preprocessing to determine the license plate area.
Character segmentation: After the license plate area is located in the image, the character area is accurately positioned through processing such as graying and binarization, and then character segmentation is performed according to the character size feature.
Character recognition: The segmented characters are scaled, extracted, and matched with the standard character representation in the character database template.
Result output: The license plate recognition result is output in text format.
Automatic Vehicle Identification System Application Area
Modern society has entered the information age. With the development of computer technology, communication technology, and computer network technology, the ability and level of automated information processing have been continuously improved, and it has been widely used in people's social activities and various fields of life. The automobile, which is one of the major means of transportation in the modern society, has been widely used in various fields of people's production and life, and its automatic collection and management of information is very important for transportation vehicle management, park vehicle management, and parking lot management. The significance has become an important topic of information processing technology.
Intelligent transportation system is the development trend of world road traffic in the 21st century. The continuous development of road transport infrastructure and the continuous improvement of vehicle management systems have laid a good foundation for the practical application of intelligent traffic systems based on visual surveillance. In the intelligent transportation system, license plate recognition system is a very important development direction. The system automatically registers, verifies, monitors, and alarms the vehicles. The system applications include: toll management systems for highways, bridges, tunnels, etc.; urban traffic vehicle management, electronic*, customs border traffic monitoring; intelligent community, intelligent parking management License plate verification, traffic statistics, mobile and onboard systems.
Identification of vehicles entering and entering the park: When the owners of the park check in, they will register their cars and their license plate information will be recorded in the computer database. At the gate of the park, there is an automatic license plate recognition system that automatically recognizes the incoming and outgoing vehicles, determines whether it is a vehicle in the park based on the license plate data in the database, releases the vehicles in the park, and automatically records the time of entering and leaving the park so that When a vehicle is stolen, etc., it is queried; vehicles outside the park will be required to register before entering.
Parking management: In the parking lot entrance and exit of the park, there is an automatic license plate recognition system that automatically identifies the vehicles entering and exiting the parking lot and determines whether it is a vehicle that has bought (or rented) a parking space based on the license plate data in the database. Vehicles bought (or rented) are released and their parking time is automatically recorded so that they can be queried when a vehicle is stolen or the like. Vehicles bought (or rented) at the parking lot entering the parking lot will be automatically parked at their parking spaces. The device is opened so that the vehicle can be parked; for other vehicles, the time it takes to enter and leave the car park will be automatically recorded so that the time will be charged, and the other car entering the car park will be automatically allocated a parking space and the car stop at its parking space opened for the car to park. At present, the obstacles for the use of license plate recognition technology in a large number of smart parks are the improvement of recognition rate and the reduction of economic costs.
Highway Management: With the rapid development of expressways in China, the total mileage has leapt to the second place in the world. While the supporting electromechanical facilities of the provincial highways are gradually being improved, the inter-provincial and inter-regional highway network toll collection has begun to be implemented in most provinces and cities across the country, and the Ministry of Communications has also specifically regulated the planning, design, and construction of national expressway network toll collection facilities. Operational management has issued the Interim Technical Requirements for Expressway Interconnection Charges to improve the service quality and service efficiency of expressways.
Brandt 4' × 5' Shaker Screen
Replacement Hook Strip Soft Screens for Brandt 4' × 5' / B40 Shakers
Replacement Brandt 4' × 5' shaker screen is a kind of hook strip soft shaker screen. It is made of 304 stainless steel wire mesh cloth, designed with 2–4 layers composite bonded construction. Without steel backing plate, it offers maximum non-blanked area but increased fluid capacity. Bottom layer is made of coarse stainless steel wire mesh. It can supplies sieving action and serves as a support plate.
Technical Parameter
- Mesh Material: stainless steel 304/316/316 L.
- Frame Material: Q235 steel.
- Screen Type: XL, XR, MG.
- API RP 13C Designation: API 120 – API 325.
- Suitable Environment: water-based.
- Package: packed in paper carton, shipped by wooden case.
Adaptable Shale Shaker Model
SJ-Brandt 4' × 5' shaker screen are used as the substitute screen for
- Brandt 4' × 5' / B40 shale shaker
Competitive Advantage
- XL and XR mesh offer fine solids removal.
- Reduce requirement for mud dilution and treatment.
- Easy to install without any tools.
- Manufactured according to the API RP 13C (ISO 13501).
- Scientific & reasonable cost control system for competitive price.
- Adequate inventory in the shortest time to meet customers' demand.
Remarks:
Brandt 4' × 5', B40, are marks of Varco I/P, Inc.
ShengJia only produces the replacement screens but not original from Brandt.
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Anping Shengjia Hardware Mesh Co.,ltd , https://www.oilshakerscreen.com