What are the advantages of the parking management system?
1. High-resolution capture of license plate information. The applicable lanes can be controlled wider. The entrance angle of the car can be accepted more. The definition is controlled by high Chinese character resolution, which greatly improves the recognition rate of Chinese characters. The maximum separation rate is up to 3 million pixels. .
2. Automatically recognize the exposure, and automatically adjust the exposure parameters according to the brightness value analysis of the license plate area, such as the shutter, sensitivity, gain and other parameters, can be adjusted frame by frame, and the response is fast, ensuring the best exposure effect of the license plate area. Improve license plate recognition rate.
3, license plate distortion calibration, because the camera capture license plate, the license plate and the capture opportunity to produce a certain degree of angular deviation, so that the license plate deformation is difficult to identify, this system installed a distortion repair algorithm greatly improved the license plate recognition accuracy. Recognition rate up to 99%
4. The equipment system adopts the TCP/IP network mode. A power line and several network cables can complete the overall system connectivity, making the system wiring, construction and maintenance easier and more convenient. The system can use existing networks to connect without rewiring, which saves construction costs.
5, suitable for high and low temperature environment, cold start can be preheated by part of the circuit heat; high temperature conditions, due to the need for high-speed processor, a lot of heat, in order to ensure the reliability of the equipment, license plate recognition camera for heat-large chip Direct contact with the shell for effective heat dissipation; high stability.
Parking Management System Workflow:
Vehicle Entry Management:
1. Temporary vehicles
When a temporary vehicle enters the site, the high-definition license plate recognition integrated machine automatically recognizes the license plate number and records the entry time from a long distance. The barricade quickly lifts the bar at a long distance and does not stop to enter the parking lot; the vehicle automatically drops through the rear gate bar.
2, fixed customer vehicles
The control host will send license plate information corresponding to the authorization channel to the license plate recognition management software. When the fixed vehicle enters the parking lot, the license plate recognition integrated machine automatically captures, identifies, and processes the vehicle's license plate information, and transmits the recognition result to the management computer. The management computer uses the recognition result to query the database to identify the correct automatic release of the vehicle and at the barrier gate. The license plate number of the car is displayed on the display screen; the vehicle will automatically fall through the rear gate bar and the vehicle will not stop.
3. Unlicensed vehicles and special vehicles
When the entrance is unattended, the system automatically lifts the rod for unlicensed and special vehicle license plates.
Vehicle appearance management:
1. Temporary vehicles
When the temporary vehicle comes out, the high-definition license plate recognition integrated machine automatically recognizes the license plate number, uploads it to the computer over a long distance, and the management computer automatically retrieves information such as the license plate and the entry time of the car, automatically calculates the parking time, the amount of the charge, and The display shows the amount of charges;
After completion of the toll collection, the barrier bar will automatically open and release the vehicle, and the vehicle will automatically fall behind the barrier bar;
2, fixed customer vehicles
When the fixed vehicle goes out of the parking lot, the license plate recognition one machine automatically captures, identifies, and processes the vehicle's license plate information, and transmits the recognition result to the management computer. The management computer uses the recognition result to query the database to recognize the correct automatic release of the vehicle and display on the screen. Display the user type and license plate number of the vehicle; the vehicle will automatically fall through the rear gate bar to reach the vehicle without stopping.
3. Unlicensed vehicles
When an unlicensed vehicle appeared, the system did not recognize the license plate number, and automatically retrieved photos of unlicensed and unappeared vehicles. The toll collectors conducted an artificial comparison, and after the confirmation, they were automatically charged, and the lift bar was released after charge.
4, special vehicles
When a special vehicle comes out, the license plate recognition machine automatically captures, identifies, and processes the vehicle's license plate information, and transmits the recognition result to the management computer. The management computer uses the recognition result to query the database and displays the car's related information on the display screen. After the manual intervention, open the barrier and the vehicle will automatically fall through the rear gate.
There are three main reasons that affect the recognition rate of the parking lot for the license plate recognition parking management system.
First, we must ensure that the ambient light of the parking lot is bright enough. For dark lights or nighttime lighting, we must add some light-supplying equipment.
Second, to ensure that the license plate of vehicles entering and exiting the parking lot is intact, so that it is possible to ensure that the vehicle license plate for each entry and exit can be captured;
Third, to ensure that the license plate recognition position, the size of the license plate pixels, not less than the size of the best license plate pixels;
Therefore, optimizing the recognition environment, reducing the complexity of the environment, and slowing down the vehicle speed through auxiliary means can effectively improve the license plate recognition rate.
From the perspective of internal factors, the license plate recognition system is based on the license plate recognition algorithm, and the license plate recognition algorithm consists of space complexity and time complexity, and is divided into five different characteristics:
1. The input item is the specific license plate image;
2. The output item is the recognition result of the license plate;
3. The evolutionary nature of the finiteness or algorithm is limited, and it is impossible to have unlimited calculations.
4, the exact nature of the algorithm has more than one exact definition of each calculation step;
5. The feasibility is the effect of license plate recognition.
By optimizing the above five characteristics, fundamentally optimizing the license plate recognition algorithm is one of the most effective ways to improve the license plate recognition rate.
Shantui Trimming Dozers equipment is designed meet the needs of mining, It has convenient and flexible operation, due to the power shift transmission. Shantui Construction Machinery Co., Ltd., founded in 1980, was a national category I key enterprise integrating research & development, production and sales of main engine products and key components of earth moving machinery, pavement construction & compaction machinery, building machinery, hoisting machinery and other construction machinery series products; and it is also a state-owned joint-stock listed company. It is one of the top 50 manufacturers of construction machinery in the world, and one of China`s top 500 manufacturers. On January 1, 1997, [Shantui" listed on the Shenzhen Stock Exchange (stock code: 000680). In June 2009, Shandong Heavy Industry Group was established, and Shantui became one of its Subsidiaries. As the backbone of construction machinery industry in China, Shantui always ranks as No.1 in the industry.
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