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License Plate Recognition System Implementation Process and Camera Requirements
The advantages of license plate recognition system technology applied to the entrance and exit management system:
The license plate recognition equipment is installed at the entrance and exit, record the license plate number and the time of entry and exit of the vehicle, and combine it with the control equipment of automatic doors and barriers to realize the automatic management of the vehicle. The technology can be applied to the parking lot to achieve automatic time-based charging, and it can also automatically calculate the number of available parking spaces and give tips to achieve automatic parking fee management, save manpower and improve efficiency. The application to the smart community can automatically determine whether the entry vehicle belongs to the local cell and implement automatic timing and charging for non-interior vehicles. In some units, this kind of application can also be combined with the vehicle dispatch system to automatically and objectively record the vehicle's outbound condition to effectively improve the efficiency of vehicle access. It is not only used as an entrance and exit management, but it also helps in internal order management. It can automatically record the entrance and exit of the vehicle, enter and exit the time, and politely reject the intruder. Because the traffic information when all vehicles pass through will be stored in the server, there is no need to manually record the license plate, the server provides a wealth of query functions, but also can help users quickly locate the vehicle and the rider information.
License plate recognition system implementation process:
First, when a fixed vehicle enters, the camera captures an image, the system automatically recognizes the license plate number, the license plate color, automatically determines the type of vehicle, etc., records information such as the entry time of the database vehicle, and then determines whether the vehicle is a fixed or temporary vehicle. The automatic release of the fixed vehicle system eliminates the need for manual control of the barrier switch; when the temporary vehicle enters, the system will time, and the admission information is automatically entered into the database, an alarm is issued, and manual intervention is required to release it;
Second, in the exit section, the vehicle arrives at the parking exit identification area. The camera automatically recognizes the vehicle license plate number, vehicle color, and enters the exit information, and then makes a judgment on the vehicle type. If it is an internal car, according to the user's set or the requirements of physical property management, the system lifts the gate directly, or releases it after confirmation; if it is a temporary vehicle, it shall determine the parking fee receivable according to the vehicle type and parking time charge standard.
License Plate Recognition System Special Camera Technical Requirements:
1, automatic license plate recognition
The camera uses a high-end DSP chip, embedded automatic license plate recognition algorithm, can identify various types of license plate number, license plate color and license plate type. All-weather license plate recognition rate is greater than 99%.
2, high-resolution video and images
Can output 1080P/720P (optional) real-time HD video in H.264 or MJPEG format, with a frame rate of 15/30 frames per second, up to 2 megapixels in snap shots, and a resolution of 4/3 Format: 1920x1080, 1280x720 for 1600x1200, 1280x1024, or 16/9 frames.
3, high-speed response speed
In the photo mode, the time from triggering to taking pictures is less than 0.03 seconds. The burst rate of 2 million pixels is 10 frames per second (without real-time license plate recognition). If real-time recognition is enabled, the capture rate is 2 frames per second.
4, high picture quality
Using a variety of image processing techniques, clear pictures can be taken regardless of light, backlight, daytime and night.
5, digital or analog video
The user can choose whether to output high-definition digital or analog video.
6, large-capacity SD card local storage
7, flexible information superposition
The user can freely superimpose the license plate information and other text information on the photo through the client interface settings.
8, broadband network transmission
Real-time digital video and photos are automatically transmitted over broadband Ethernet to designated servers or host computers. Support customer custom network protocol SDK.
9, convenient user interface
The user interface allows the user to freely set various parameters such as system, video, image, text overlay information, control, storage, and transmission at the remote end.
10, built-in watchdog
When the system is disturbed by the external environment, resulting in the system can not work, the system can automatically recover
11, loose working temperature
Operating temperature range -20 °C ~ 70 °C, very suitable for outdoor harsh monitoring environment.