Method and device for laser vehicle vehicle identification

Abstract

The invention discloses a method and a device for identifying a laser vehicle type. The point cloud data of a vehicle in a three-dimensional space is obtained by splicing, summing, and converting the ranging data of two vertically installed laser ranging radars. The amount of data change in the time domain, the projection on the three-dimensional space surface, the coordinate processing in the three-dimensional space, and the vehicle model can be obtained through the vehicle model discrimination algorithm. The invention realizes the vehicle model can be intuitively obtained from the laser radar data, and significantly improves the correct rate of vehicle model identification. The laser ranging radar and the data processing unit are integrated and installed inside the shell structure, and the data processing unit is fixed inside the shell structure through the mounting plate, which ensures the efficient use of the internal space of the shell structure. The DC and AC power lines and signal lines are arranged separately, eliminating The interference and influence of the power line on the signal line is eliminated, and the unique "cross groove" design not only ensures the field of view of the laser ranging radar, but also achieves a good protection effect.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method and a device for identifying a laser vehicle type. Background technique [0002] With the rapid development and reform of expressways, with the vigorous promotion of ETC, the cancellation of provincial boundary toll stations and the smooth implementation of entrance control, the vehicle classification standard document is replaced by JT / T489-2019 "Vehicle Toll Vehicle Classification on Toll Roads" / T 489-2003 "Classification of Vehicle Tolls on Toll Roads", the implementation of a series of policies such as changing the toll by weight of trucks to the toll by vehicle type. A car model recognition device with a high recognition rate can well solve the problems faced in the current mode, such as: ETC has multiple trucks in one car, the car card does not match the fee evasion, and the entrance control is different. The axle type of different models determ...

AI Technical Summary

Problems solved by technology

At present, there are mainly three ways to realize vehicle identification equipment on the market: laser, video and weighing. The vehicle identification equipment implemented by weighing needs to destroy the road surface, the construction is complicated, and it is easily affected by temperature. The video implementation method is easily affected by the environment and light. The method of laser realization is basically the classification method under the standard of JT / T 489-2003 "Classification of Vehicle Tolls on Toll Roads", so one is needed to realize the classification of JT / T 489-2019 "Classification of Vehicle Tolls on Toll Roads" Standard laser car model recognition equipment

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