Automobile anti-collision method and device

Abstract

The invention discloses an automobile anti-collision method. The method comprises the steps of acquiring the current velocity V0 of an automobile which is taken as a reference automobile, the current velocity V1 of an automobile in front, the relative distance D1 between the reference automobile and the automobile in front, the current safe distance of the reference automobile SF=S0+S1+S2+S3, and the caution distance of the reference automobile SA=V0tA, wherein tA is preset caution time; judging that the reference automobile is safe when SF+SA<D1; judging that the reference automobile is in the caution state and making the reference automobile give an alarm when SF<D1<=SF+SA and SF+SA>=D1+S3-1; judging that the reference automobile is in the dangerous condition and braking the reference automobile when SF>=D1 and SF>=D1+S3-1. According to the parameters including the current velocity of the reference automobile, the current velocity of the automobile in front and the relative distance between the reference automobile and the automobile in front, rear-end collision caused by sudden stop of the automobile in front is avoided, and traffic safety is improved.

Description

technical field [0001] The invention relates to the technical field of automobile safety, in particular to a method and device capable of preventing automobile collision accidents in advance. Background technique [0002] At present, the number of cars is increasing, and the density of vehicles on the road is also increasing, followed by more and more rear-end collision accidents. For this reason, major automobile manufacturers have invented various pre-collision systems to reduce the risk of rear-end collisions. The principle is based on the relative movement of the vehicle and the front and rear adjacent vehicles, and then calculate the rear-end collision risk through data processing to remind drivers to take corresponding measures. Hedging measures or automatically take corresponding measures to avoid risks. The disadvantage of the current anti-collision system is that it cannot solve the problem of the largest blind spot for drivers on small vehicles such as cars and SU...

AI Technical Summary

Problems solved by technology

The disadvantage of the current anti-collision system is that it cannot solve the problem of the largest blind spot for drivers on small vehicles such as cars and SUVs (because the driver's sitting posture is low, the road in front of the car next to the front vehicle becomes the largest blind spot) ; At the same time, because the data processing does not include the road conditions in front of the vehicle adjacent to the vehicle in front, when the vehicle is driving at high speed, if the driving safety distance preset by the system is too small, it will cause the risk of rear-end collision of the vehicle or the rear-end collision of the vehicle. Risk of rear-end collision (especially when the vehicle in front is suddenly stopped due to rear-end collision); if the driving safety distance is too large, it is easy to make it difficult to ensure this safety distance during driving (especially on holidays, when the traffic flow density is too large, according to the The preset safety distance of the existing pre-collision system is difficult to achieve)

Images