Automatic license plate identification system at urban checkpoint

Abstract

The invention relates to an automatic license plate identification system at an urban checkpoint, which belongs to the field of monitoring and comprises a coil assembly, a vehicle detection module, a license plate identification module, a front-end module and a network transmission module, wherein the coil assembly is connected to the vehicle detection module, and coils generate a pulse signal when a vehicle passes through the urban checkpoint; the vehicle detection module detects the coils and transmits the received pulse signal to the license plate identification module; the license plate identification module captures a video image transmitted by the front-end module when the license plate identification module receives the pulse signal, finishes the entire video image processing process of the identification of a license plate, and uploads a processing result by a network; the front-end module carries out synchronous exposure, synchronous supplemental lighting and shooting on a camera under the control of a vehicle identification module and transmits the video image to the license plate identification module; and the network transmission module uploads the data of the license plate and the vehicle to a data centre. The system integrates most of the functions in the candid identification of the license plate at the checkpoint by adopting integrated design, reduces the system maintenance difficulty caused by the complexity of the system greatly, enhances the entire stability and reliability of the system, and lowers the maintenance cost of the system.

Description

technical field [0001] The invention belongs to the field of monitoring and relates to an automatic identification system, in particular to an automatic identification system for city bayonet license plates. Background technique [0002] With the rapid development of the economy, the number of cars in my country has increased rapidly, and traffic violations have also increased greatly. The government traffic control and public security departments have paid more and more attention to the effective management of motor vehicles entering and leaving the city. The urban security checkpoint is the entry and exit of the city. Arteries, strengthen the management of checkpoints and effectively assist the traffic control department in traffic management, such as speeding, card decking, etc., and assist the public security organs in the detection of cases, such as vehicle theft, vehicle hit-and-run, etc. [0003] At this stage, the system architecture generally adopted by the city bayo...

AI Technical Summary

Problems solved by technology

On the one hand, because the vehicle detector has very strict requirements on the laying width, height, and spacing of the coils, if adjacent coils are laid too close together, it will cause mutual crosstalk between the coils, which will affect the sensitivity and reliability of vehicle detection. On the one hand, the laying of coils will damage the road surface to a certain extent. If the laying density is too high, it will cause great damage to the road surface and affect the service life of the road surface. damage

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