Wheelmark transverse distribution measuring system and method

Abstract

The invention discloses a wheelmark transverse distribution measuring system, comprising a system of measuring a distance from one side of horizontal section of a vehicle to a road shoulder, a characteristic database for shape and size of one side of the horizontal section of the vehicle, a wheelmark transverse distribution characteristic determining system and a wheelmark transverse distributioncharacteristic database. A method of using the measuring system to perform measuring comprises the steps of measuring shape and size data of one side of the horizontal section of the vehicle and distance data from one side of the horizontal section of the vehicle to a laser ranging sensor by the system of measuring the distance from one side of the horizontal section of the vehicle to the road shoulder; recognizing the vehicle; calculating speed; recognizing vehicle model; establishing an original wheel database; recognizing wheels; manufacturing a wheelmark transverse distribution characteristic curve. By using the system and method, laws of wheelmark transverse distribution coefficient under different conditions can be statistically acquired, measuring precision is high, and all-weatherdata collection can be achieved.

Description

technical field [0001] The invention belongs to the technical field of traffic and transportation engineering and highway subgrade and pavement, and in particular relates to a measuring system and a measuring method for the lateral distribution of wheel tracks. Background technique [0002] Where the wheels of heavy-duty trucks often pass by, the road surface has been loaded for a long time, and the load is transmitted from the road surface to the roadbed. The slightest manifestations are a few depressions on the road surface leaving ruts, and even worse, the roadbed is severely damaged, the road surface collapses, and cracks are formed. , The edge is raised. These signs are especially obvious on roads where the design strength of the subgrade and pavement is relatively low and most of the passing vehicles are heavy-duty trucks. The reason behind this phenomenon of heavily damaged subgrade pavement is that most of the wheels of heavy goods vehicles pass certain positions on...

AI Technical Summary

Problems solved by technology

[0004] The current main method for measuring the lateral distribution of wheel tracks is the on-site traffic photography and video recording method. This method requires the traffic safety department and the road management department to cooperate with 4-5 surveyors to draw some kind of scale on the road after the road is closed, and then unblock it. After the road, the camera will be used to shoot the position of the wheel when it passes the scale. After the road surface is shot, the surveyor will record the data by watching the video. Permanent observation, the setting of road markings, the placement of photographic equipment and the appearance of investigators will not only interfere with the normal driving of the driver and affect the objectivity and accuracy of the measurement data, but will also affect the personal safety and overall safety of the surveyors. The normal operation of the road system and traffic safety bring great hidden dangers, coupled with the non-standard and unreasonable setting of landmark lines may lead to low accuracy of measurement results, in short, it is time-consuming, labor-intensive, low in efficiency and benefit, and high in risk factors. The operation is difficult, the feasibility is not strong, and it is impossible to realize unattended automatic vehicle identification and automatic vehicle type speed measurement around the clock

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