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Vehicle sensor information screening method and vehicle collision avoidance system using the method

A technology for vehicle collision avoidance and collision avoidance, which is applied to vehicle components, vehicle safety arrangements, control/regulation systems, etc. The effect of police

Active Publication Date: 2018-04-13
温州市博狼智造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual driving process of the vehicle, the vehicle conditions are complex, and there is still a lack of an effective and safe means of information collection and analysis of threats in the turning process.

Method used

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  • Vehicle sensor information screening method and vehicle collision avoidance system using the method
  • Vehicle sensor information screening method and vehicle collision avoidance system using the method
  • Vehicle sensor information screening method and vehicle collision avoidance system using the method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Embodiment 1, a method for screening vehicle-mounted sensor information, see the appended figure 1 , 2 , when the vehicle is moving, take the instantaneous position of the vehicle when turning as the origin and select the s area to establish a coordinate system. The horizontal axis is the vehicle lateral displacement y, the vertical axis is the vehicle longitudinal displacement x, and the position set A of all obstacles in the s area is obtained through the radar 1 (y,x). And in theory, it is possible to calculate the driving trajectory of the vehicle based on the instantaneous position. And the trajectory is a circle with a certain point (a, b) in the coordinate system as the center and the initial position of the vehicle, that is, the origin (0,0) as the starting point. According to the formula, the trajectory function (y-a)²+(x-b)²=r² of the circle in the coordinate system can be obtained, and r is the radius of the circle. In order to obtain the coordinates (a, ...

Embodiment 2

[0062] Embodiment 2, a kind of vehicle collision avoidance system, such as Figure 4 As shown, the driving detection module is composed of a millimeter-wave radar sensor, an ultrasonic sensor, an image recognition sensor, a gyroscope module, the vehicle speed information and the target screening algorithm in Embodiment 1. The target screening process uses information fusion algorithm to screen all the target information obtained by the first three sensors at a certain angle in the forward direction of the car, to solve the problem of high false alarm rate caused by a single sensor, and introduce the vehicle The vehicle speed and the yaw angle rate obtained by the gyroscope module, combined with the vehicle speed and the longitudinal offset become the vehicle's expected driving trajectory, so that the real threat to the vehicle's expected driving trajectory can be realized in all targets within the forward detection angle. The extraction of the target further transmits the rela...

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Abstract

The invention discloses a vehicle sensor information screening method and solves the problem that a real obstacle is difficult to distinguish automatically when the vehicle makes a turn. A coordinate system taking the horizontal offset of the vehicle as the value of y and the longitudinal offset of the vehicle as the value of x is built in the area s; the coordinate set A1 (y, x) of the obstacle in the front area s of the vehicle is acquired by a sensor; the current yaw rate r of the vehicle and the vehicle speed v are acquired by the sensor, the expected traveling track y' of the vehicle is generated, that is y'=f1(v, r, x), the horizontal deviation value y1=f2(x) is introduced according to the increase of the longitudinal distance, the expected position range ys'=f1(v, r, x)+-f2(x) of the turning process of the vehicle is generated, and the expected position set A2(ys', x) of the turning process of the vehicle is obtained accordingly; an intersection B of the A1 and the A2 is screened as a deterrent, the relative distance and the relative speed of the deterrent to the vehicle are obtained, and the vehicle sensor information screening method aims to screen the real deterrent in the turning process of the automobile.

Description

technical field [0001] The invention relates to the field of vehicle automatic collision avoidance, in particular to a vehicle sensor information screening method and a vehicle collision avoidance system using the method. Background technique [0002] According to the survey, about 70% of road traffic safety accidents are caused by failure to maintain a certain safe distance between vehicles during driving. In order to improve driving safety and reduce the occurrence of rear-end traffic accidents, some car companies and research institutions around the world have carried out a lot of research on the active collision avoidance system and automatic braking technology (Autonomous Emergency Braking, referred to as AEB). AEB is an active safety technology for automobiles. It uses radar to measure the distance to the vehicle in front or obstacles, and then uses the data analysis module to compare the measured distance with the alarm distance and safety distance. Even if the drive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R21/0134B60R21/0132B60T7/12G05D1/02
CPCB60R21/0132B60R21/0134B60R2021/01327B60T7/12G05D1/0255G05D1/0257
Inventor 姜锡华何敏孙晓林王毅赵创新
Owner 温州市博狼智造科技有限公司
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