An automatic recognition system for road vehicle models

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 recognition system for road vehicle models, which belongs to the technical field of intelligent transportation. Background technique [0002] At present, the existing vehicle identification system is mainly based on the principle of video image analysis, ultrasonic wave, electromagnetic induction coil, laser scanning and geomagnetic detection. The video image analysis system is easily affected by weather conditions, and the detection and recognition accuracy decreases under foggy, rainy and snowy weather conditions. Ultrasonic detection systems are also vulnerable to adverse weather such as strong winds and rainstorms, as well as vehicle occlusion. When the electromagnetic induction coil system has a large road traffic flow and a small distance between vehicles, it is easy to generate mutual interference between the front and rear vehicles, which affects the recognition accuracy. The detection and recognition acc...

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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