Vehicle curve anti-instability vehicle speed calculation and early warning system and method based on intelligent networking

Abstract

The invention discloses a vehicle curve anti-instability vehicle speed calculation and early warning system and method based on intelligent networking; the system comprises a speed measuring radar, anaxle load scale, a vehicle model detector, a road side sensing and acquisition device, a language sub-system, a pre-warning lamp, a display screen and an industrial personal computer; the industrialpersonal computer is used for comparing the anti-instability vehicle speed obtained through calculation with the result of the speed measuring radar to generate an early warning signal and controllingthe language sub-system, the pre-warning lamp and the display screen to issue early warning information. According to the system and the method in the invention, behaviors of vehicle sideslip, rollover and vehicle turning are comprehensively considered, three critical vehicle speeds, specific to vehicle sideslip, rollover and turning behaviors, which are obtained through calculation, are used, and a minimum value is taken through comparison and reservation, that is, the anti-instability vehicle speed during turning of the vehicle can be obtained; according to the system and the method in theinvention, the critical anti-instability vehicle speed under different vehicle types and road conditions can be accurately predicted, the calculation is simple and convenient, the operation speed is high, the reliability is high, a theoretical method support is provided for design and development of a curve safety auxiliary driving system, and more universality is achieved for curve driving safetyresearch.

Description

technical field [0001] The invention belongs to the field of traffic safety, and relates to a vehicle speed calculation and early warning system and method for anti-instability in curves, and in particular to an intelligent network-based anti-instability vehicle speed calculation and early warning system and method for vehicle curves. Background technique [0002] With the development of Internet of Vehicles technology, intelligent Internet of Vehicles has become possible. Intelligent Internet-connected vehicles are equipped with the latest on-board sensors, controllers, actuators and other devices, and based on advanced network communication technology, complete the vehicle and X (human) , vehicle, road, background, etc.) intelligent information interaction and sharing, with complex environmental perception, intelligent decision-making, collaborative control and execution functions, can achieve safe, comfortable, energy-saving, efficient driving, and finally realize a new ge...

AI Technical Summary

Problems solved by technology

However, the existing technology seldom considers the two dangerous states of sideslip and rollover comprehensively, and the vehicle model is relatively single. The vehicle dynamics model established by it does not consider the vertical load offset during the vehicle sideslip process. The judgment of the critical condition of the vehicle sideslip is not accurate enough, and the relationship between the critical rollover speed and the vehicle lateral load transfer rate has not been quantitatively analyzed, and no systematic analysis has been made on the factors affecting the speed of the curve.

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