Vehicle collision prevention intelligent early warning device and method

Abstract

The invention relates to the field of automobile safety assisted driving, in particular to a vehicle collision prevention intelligent early warning device and method. The vehicle collision preventionintelligent early warning device comprises a cross beam installed on the position, close to the roof center, of a front windshield of a vehicle, a connecting rod is installed vertically downwards at the center position of the cross beam, an installation platform is installed at the end, away from the roof, of the connecting rod, and the installation platform is divided into the left side and the right side by the connecting rod, moving sliding platforms capable of moving in the length direction of the installation platform are installed on the two sides of the installation platform correspondingly, driving devices driving rotation of rotating platforms are installed on the two moving platforms correspondingly, the driving devices are connected with the rotating platforms to drive the rotating platforms to rotate, and CCD image sensors are installed on the rotating platforms correspondingly. The two CCD image sensors form a binocular visual system to automatically adjust the baseline length and the rotation angle according to a target, the precision and accuracy of ranging are improved, and the technical problem that the vehicle enters a road turn, and consequently the ranging target is lost and unmeasurable is avoided.

Description

technical field [0001] The invention relates to the field of automobile safety assisted driving, in particular to an intelligent vehicle anti-collision early warning device and an early warning method. Background technique [0002] In the existing vehicle collision avoidance warning system, laser radar, monocular camera, binocular vision system and other devices are usually used to collect the information in front of the vehicle. In the system using the binocular vision system, the Chinese invention patent with the application number CN201711343501X discloses a vehicle-mounted intelligent front vehicle collision avoidance warning method based on the binocular vision system, which detects and monitors the vehicle ahead through the binocular vision system. track. However, when using this method for detection, due to the fixed baseline length of the binocular vision system, the error will change greatly when measuring the distance of targets at different distances, that is, th...

AI Technical Summary

Problems solved by technology

However, when using this method for detection, since the baseline length of the binocular vision system is fixed, the error will change greatly when measuring the distance of targets at different distances, that is, the error of measuring long-distance targets is larger than that of measuring close-range targets

At the same time, the binocular vision system of the system is fixed on the mounting frame and cannot be rotated, resulting in a fixed common field of view area of ​​the binocular vision system. If the target in front of the vehicle deviates from this area, such as: the vehicle enters a curve, the ranging target will be lost and the distance will be reduced. unfathomable

As a result, the accuracy of the front vehicle collision avoidance warning system decreases

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