Tracking and predicting device of motion state of front vehicle and predicating method thereof

Abstract

The invention belongs to the technical field of automobile active safety, and particularly relates to a tracking and predicting device of the motion state of a front vehicle and a predicating method thereof. The tracking and predicting device of the motion state of the front vehicle comprises the vehicle, an ARM9 processor, a camera fixed to the center of the outer side of the front windshield of the vehicle, a lane line sensor for detecting the position relation between the vehicle and a lane line where the vehicle is located, a vehicle speed sensor for collecting driving speed data of the vehicle and a millimeter-wave radar for emitting signals to the position in front of the vehicle; a lens of the camera faces the position in front of the vehicle; the lane line sensor is fixed to the center of the outer side of the front windshield of the vehicle; the millimeter-wave radar is fixed to the outer side of an air inlet grating of the vehicle; the signal input end of the ARM9 process is electrically connected with the signal output end of the vehicle speed sensor, the signal output end of the lane line sensor, the signal output end of the camera and the signal output end of the millimeter-wave radar.

Description

technical field [0001] The invention belongs to the technical field of automobile active safety, and in particular relates to a device for tracking and predicting the motion state of a vehicle in front and a prediction method thereof. Background technique [0002] The ACC (Adaptive Cruise Control) adaptive cruise system has been widely used in automobiles. Its basic principle is to detect the speed of the vehicle closest to the vehicle directly in front of the vehicle and the distance to the vehicle in real time through the vehicle radar, so as to set The relative position relationship with the preceding vehicle is maintained within the threshold range. At present, the typical ACC adaptive cruise system will only work well on a straight road section, and the vehicle in front is driving straight or swinging in a small range. The vehicle is the following object. At this time, since the following object is far away from the vehicle, the ACC adaptive cruise system will accelera...

AI Technical Summary

Problems solved by technology

[0003] At the same time, in the actual driving process, when the ACC adaptive cruise control system keeps good tracking of the vehicle in front, suddenly a vehicle from the adjacent lane of the own lane enters the own lane, and the entry position is between the own vehicle and the ACC adaptive cruise control system. When following vehicles, the ACC adaptive cruise system will also change the following target from the original target vehicle in front of the lane to a newly entered vehicle. Automatically decelerate sharply, which will cause the ACC system to work in disorder, causing a series of safety hazards

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