Forward collision early warning method and active braking system

Abstract

The invention provides a forward collision early warning method and an active braking system. The method comprises the steps that a main vehicle receives a basic safety message sent by a far vehicle,and the basic safety message at least includes a timestamp, a far vehicle longitude and latitude, a far vehicle altitude, a far vehicle heading, a far vehicle speed and a far vehicle acceleration; themain vehicle calculates collision time between the main vehicle and the far vehicle according to the information of the main vehicle and the basic safety message; and if the collision time is smallerthan a safety calibration value, the main vehicle generates and outputs forward collision early warning, and information in the forward collision early warning at least includes a direction of the far vehicle and a distance between the main vehicle and the far vehicle. In the invention, technical problems that in the prior art, a traditional active braking system needs to be provided with a plurality of sensors, and a misjudgment rate is high during braking judgment are solved, and more reliable forward collision early warning can be provided through adopting a V2X technology by using the forward collision early warning method.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a forward collision warning method and an active braking system. Background technique [0002] Active braking technology is an active safety technology. The active braking system enables the car to have the ability to automatically avoid collisions. When the car is driving, if the following distance is too tight, there may be a risk of collision. The active braking system intervenes in the braking to maintain a safe distance from the vehicle in front; when encountering an obstacle, if the driver fails to brake in time, the active braking system Step in and avoid the car from hitting the obstacle by braking hard. [0003] Traditional active braking systems generally consist of three modules: sensors, decision-making modules, and braking systems. However, this active braking system requires the installation of many sensors, and the misjudgment rate is high when making braking judgments...

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, the present invention proposes a forward collision warning method and an active braking system, which solves the technical problem that many sensors need to be installed in the traditional active braking system in the prior art, and the misjudgment rate is high when making braking judgments.

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