Method and system for calculating safe driving speed of intelligent vehicles considering road surface state

Abstract

The invention discloses a method and system for measuring and calculating the safe driving speed of an intelligent vehicle considering the state of the road surface. A laser scanning unit scans the road surface to obtain the texture of the road surface, and performs force simulation on vehicles with various loads and tire patterns. Update the contact relationship between the tire and the road surface and the corresponding braking distance; the wireless communication unit obtains the vehicle model, load and tire information of the incoming vehicle, retrieves the pre-stored contact relationship between the tire and the road surface, selects the best matching data, and gives the corresponding braking distance; The anti-skid prediction unit obtains the environmental parameters of the road surface, and corrects the predicted braking distance; converts the corrected braking distance to obtain a safe driving speed suitable for the coming vehicle; the warning unit provides a suggested safe driving speed. This system realizes vehicle-road mutual communication, obtains information of incoming vehicles in real time, and broadcasts road surface conditions to incoming vehicles, ensuring the safety of vehicles during driving.

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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