Road vehicle monitoring system and method based on soft switching radar

Abstract

The invention provides a road vehicle monitoring system and method based on a soft switching radar. The system comprises a control center, a collection station and a radar station, the radar stationis composed of a forward radar, a direction radar and a data transmission module, and by arranging the forward radar and a reverse radar at the single stations, the single-station radar can cover 1 kmto the maximum extent, and the number of the stations is greatly reduced. The radar monitors the (R, V, theta) of the vehicles in a coverage area to obtain the position and speed of the covered vehicles, the data transmission module transmits the communication of a data ad hoc network to the collection station, and at the collection station, according to the obtained vehicle data at the radar, acamera / ETC read head matches the related data to obtain the specific information of the vehicles. According to the invention, the camera / ETC read head, the radars and a communication scheme are effectively fused, so that soft switching between road radars is realized, and all-weather road track monitoring of the vehicles is realized at low cost.

Description

technical field [0001] The invention relates to the technical field of expressway vehicle monitoring, in particular to a road vehicle monitoring system and method based on soft-handover radar. Background technique [0002] With the development of expressways, the demand for road informatization is becoming more and more important, especially the full implementation of the ETC toll system, the cancellation of toll stations, and the tracking of vehicle trajectories on the road have become more and more important requirements. The current road information tracking vehicle trajectory mainly uses technical solutions such as cameras, millimeter-wave radars, laser radars, camera + radar all-in-ones, and ETC lane reading heads. However, the cameras are currently affected by the weather and light pollution. The coverage distance does not exceed 100m. Ordinary radars can achieve all-weather track tracking, but the coverage distance does not exceed 200m and cannot recognize license pla...

AI Technical Summary

Problems solved by technology

The current road information tracking vehicle trajectory mainly uses technical solutions such as cameras, millimeter-wave radars, laser radars, camera + radar all-in-ones, and ETC lane reading heads. However, the cameras are currently affected by the weather and light pollution. The coverage distance does not exceed 100m. Ordinary radar can realize all-weather track tracking, but the coverage distance does not exceed 200m, and the license plate cannot be recognized

Although the camera + radar all-in-one machine combines the advantages of radar and camera, it can recognize license plates and track all-weather, but the distance usually does not exceed 200m. If the radar distance is increased, it does not exceed 500m, and a single station does not exceed 1km. The amount of image trajectory data is large, so each site needs high-speed data transmission requirements, and the overall solution cost is high

ETC's reading head can only identify and clock in according to the vehicles in the lane, and cannot track the track very well

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