DSRC-based anti-car-following interference method, positioning method, etc method and system

Abstract

This invention discloses a BSRD-based vehicle following prevention method, a positioning method, an ETC method and a system. The BSRD-based positioning method comprises steps of detecting the amount of vehicles within a communication area and the amount of vehicles within preset areas through a traffic flow detector, detecting the amount and the positions of the vehicles with labels in the communication area and in each preset area, determining the amount of vehicles without labels in the communication area and in each preset area, determining the position relations between the vehicles with labels and the vehicle without labels in the communication area, and choosing the vehicle with the label which is nearest to a roadside unit for priority processing. According to the amount of the vehicles, the amount of the vehicles with labels, the amount of vehicles without labels, OBU positioning and the position information of the traffic flow detector, the RSU (road side unit) can determine the sequence of the vehicle which is away from the RSU from the near to the far, so that the further transaction operation can be determined according to the distance and whether the vehicle has the OBU. This BSRD-based positioning method avoids mistaken payment deduction and guarantees the normal operation of the DSRC application system.

Description

technical field [0001] The present application relates to the field of intelligent transportation (ITS, IntelligentTransportationSystem), in particular to a method for preventing car-following interference based on dedicated short-range communications (DSRC, DedicatedShortRangeCommunications), a vehicle positioning method, a DSRC-based electronic toll collection (ETC, ElectronicTollCollection) method and system. Background technique [0002] Application systems based on dedicated short-range communication technology (DSRC, Dedicated Short Range Communications) such as electronic non-parking toll collection systems usually use key equipment roadside units and on-board units (OBU, On-boardUnit, also known as electronic tags) to deduct fees, detect and monitor vehicles or management. These systems sometimes suffer from car-following interference problems during operation. There are usually three cases of car following interference: the first is that after the vehicle in front...

AI Technical Summary

Problems solved by technology

There are usually three cases of car following interference: the first is that after the vehicle in front without OBU installed and the vehicle behind with OBU installed enter the preset trading area, the RSU deducts the transaction fee for the vehicle behind, but does not deduct the fee for the vehicle in front The second is that after the front vehicle with OBU installed and the rear vehicle without OBU installed enter the preset trading area, the RSU cannot accurately determine the position and status of the rear vehicle. At the same time, the rear vehicle is also released; the third situation is that both the front and rear vehicles have OBU installed, but the OBU signal of the rear vehicle interferes with the OBU signal of the front vehicle, which leads to the deduction of the transaction fee of the rear vehicle first, but the front vehicle does not deduct the fee And let go

In the ETC system, these disturbances often lead to errors in deduction, detection errors, etc., such as repeated deduction for some vehicles, but no deduction for some vehicles

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