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one.System Overview
The license plate number is the only “identity” of the vehicle, and it is an important information of the motor vehicle. The automatic license plate recognition technology realizes the automatic registration of the vehicle license plate number and color, and can complete automatic monitoring, automatic registration, automatic statistics, automatic Verification, automatic comparison, automatic alarm, automatic release and many other functions. With the rapid increase in the number of cars, the requirements for intelligent vehicle management are getting higher and higher, and the application of automatic license plate recognition technology is becoming more and more extensive.
This system is an intelligent product that integrates multiple technologies such as image acquisition/processing/recognition, database, automatic control, wireless communication, satellite positioning, electronic maps, voice synthesis, etc. It consists of vehicle cameras, vehicle hosts, GPS and wireless communications, etc. It is composed of a unit and installed on a patrol car. It can be used for real-time recognition and detection of the license plate numbers of moving vehicles and fixed vehicles, and quickly and accurately identify lost vehicles, hit-and-run vehicles, vehicles that have not been inspected annually, vehicles that have not paid road maintenance fees, and have violated regulations. Recording vehicles, vehicles that should be scrapped, fake license plates and other vehicles involved or key monitored vehicles are powerful means to combat motor vehicle theft, hit-and-run crimes, and provide a strong guarantee for maintaining public order and strengthening public security traffic management.
This system can also be used for automatic detection and warning of vehicles outside the unit or group.
two.System Components
The system consists of vehicle front-end equipment and central system equipment.
The vehicle front-end equipment is composed of a vehicle camera, a vehicle host, GPS, wireless communication, and voice synthesis. The vehicle-mounted camera captures the image information of various vehicles, the vehicle-mounted host performs intelligent processing, automatically and quickly recognizes the vehicle license plate, and performs database query and comparison and data display, and provides alarm information (voice synthesis prompt).
three.The main function
* Image capture and license plate number recognition
The system automatically captures images of passing vehicles captured by the camera and automatically recognizes the license plate number.
* Database query and comparison
The system will automatically perform a quick comparison with the on-board database, and can automatically alarm.
The database can be “blacklisted” vehicles (reported vehicles, hit-and-run vehicles, vehicles that have not been inspected annually, vehicles that have not paid road maintenance fees, vehicles with violation records, vehicles that should be scrapped, false license plates and other vehicles involved in the case or key monitoring vehicles, etc.), such as identification The search result of the license plate number is the same as in the database, and the system will automatically alarm (in this case, it is to grab a specific vehicle).
The database can also be an internal vehicle of a certain unit or a certain group. If the search result of the identified license plate number is different from that in the database, the system will automatically alarm (this situation is to prevent other vehicles from entering a certain area or a certain range).
* Voice prompts
When alarming, the system automatically voice prompts the alarm information (license plate number, alarm type, etc.).
* Remote automatic update of database (wireless communication)
Using the GPRS data service of the mobile public network, the on-board database and the central database are automatically updated in real time (only the updated and changed data part is transmitted): the processing data of each patrol car will be transmitted to the center in time; any changes in the central database will also be timely It is transmitted to each patrol vehicle to avoid missing or catching the wrong vehicle, and is convenient to use; this method is especially practical when there are more patrol vehicles.
* Wireless transmission of alarm images
Using the GPRS data service of the mobile public network, the captured images of blacklisted vehicles or specific alarm vehicles can be transmitted to the center in time, which is convenient for rapid processing.
* Satellite positioning and electronic map
The system has a satellite positioning function, and the position signal is transmitted by GPRS; on the electronic map of the central computer, the precise position of the patrol vehicle can be displayed in real time, which is convenient for dispatching and management.
Four.System Features
The advantages of the camera installed in the car: strong protection ability, reliability, etc.; fixed installation, fixed focus lens, free operation, high efficiency and good effect; the application of GPS and wireless communication means can communicate and determine the location in real time.
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