Method and system for measuring and calculating safe driving speed of intelligent vehicle with consideration of road surface state

Abstract

The invention discloses a method and system for measuring and calculating the safe driving speed of an intelligent vehicle with consideration of the road surface state. The method comprises the steps:enabling a laser scanning unit to scan a road surface to obtain the texture of the road surface, carrying out the stress simulation of vehicles with various loads and tire patterns, and updating a contact relation between a tire and the road surface and a corresponding braking distance; acquiring a vehicle model, a load and tire information of a coming vehicle by a wireless communication unit, retrieving a pre-stored contact relationship between the tire and the road surface so as to select optimal matching data and give a corresponding braking distance; acquiring road surface environment parameters by an anti-skid prediction unit and correcting the obtained predicted braking distance; converting the corrected braking distance to obtain a safe driving speed suitable for the coming vehicle; and providing a suggested safe driving speed by a warning reminding unit. According to the system, vehicle-road mutual communication is achieved, coming vehicle information is obtained in real time,the road surface condition is broadcasted to coming vehicles, so that the safety of the vehicles in the driving process is guaranteed.

Description

technical field [0001] The invention belongs to the field of road traffic, and in particular relates to a method and system for measuring and calculating the safe running speed of an intelligent vehicle considering the state of a road surface. Background technique [0002] The problem of traffic safety has always been a difficult problem faced by all countries in the world. Most of the road traffic accidents are related to the decline of the anti-skid ability of the road surface. Since the texture of the road surface directly determines the skid resistance of the vehicle, it also determines the safe driving speed and safe distance. However, the existing asphalt pavement has been subjected to long-term various loads and the influence of the natural environment, and there are problems such as material degradation and texture decay. Therefore, it is necessary to establish a real-time pavement anti-skid performance monitoring system to provide safe operating parameters for vehic...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the difficulty of real-time and accurate monitoring of road surface conditions in the prior art, the purpose of the present invention is to provide a method and system for calculating the safe driving speed of intelligent vehicles considering the state of the road surface, so as to enhance the interaction between intelligent vehicles and road surface information. The subsequent safe braking of unmanned vehicles provides real-time and effective road surface safety operating parameters, which will help the application and promotion of unmanned driving technology on existing roads

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