Automatic identification system for models of vehicles running on road

Abstract

The invention discloses an automatic identification system for models of vehicles running on a road. The system is characterized by comprising a geomagnetic detecting unit array, a coordinator, a vehicle model identification server and a communication module; the geomagnetic detecting unit array is shallowly buried in the cross section of the road and collects magnetic field information at the same frequency and phase with an array unit, the geomagnetic detecting unit array is arranged in a mode that at least one geomagnetic detecting unit is arranged in the front and in the center line of a lane and several geomagnetic detecting units are arranged behind and evenly distributed on the cross section of the lane and are perpendicular to the forwarding direction of the vehicles, and it can beensured that each running vehicle passes through at least three detectors. The system has the advantages that the problems that since running trajectories of the vehicles are random, similar systemsidentify few vehicle model varieties, and the identification precision is low are solved; cars, small and medium-sized passenger cars, large passenger cars, low-duty and medium-duty trucks, heavy-dutytrucks and other vehicle models can be accurately identified; all-weather 24-hour uninterrupted automatic detection is achieved, and real-time traffic flow information is provided for the traffic management department.

Description

technical field [0001] The invention relates to an automatic identification system of a road vehicle type, belonging to the technical field of intelligent transportation. Background technique [0002] At present, the existing vehicle identification systems are mainly based on the principles of video image analysis, ultrasonic waves, electromagnetic induction coils, laser scanning and geomagnetic detection. The video image analysis system is easily affected by weather conditions, and the detection and recognition accuracy is reduced under fog, rain and snow conditions. Ultrasonic detection systems are also susceptible to adverse weather such as strong winds, heavy rain, and vehicle occlusion. When the road traffic flow is large and the distance between the vehicles is small, the electromagnetic induction coil system is prone to mutual interference between the front and rear vehicles, which affects the recognition accuracy. The laser scanning system has high detection and re...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide an automatic recognition system for road vehicle models, overcome the deficiencies of the prior art structure, and realize the three parts of the vehicle front, rear and frame, and all cross-sections The magnetic field generated by the ferromagnet is scanned, which solves the problems of few types of vehicle identification and low identification accuracy caused by random and uncertain driving trajectories of road vehicles, provides more information for vehicle identification, improves the accuracy of vehicle identification and the type of vehicle that can be identified

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