Vehicle active forewarning method, system and device based on millimeter wave radar

A millimeter-wave radar, active technology, applied in the direction of signal devices, etc., can solve the problem that the accident rate cannot be reduced

Active Publication Date: 2016-02-10
WUHAN UNIV OF TECH
View PDF6 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vehicle-mounted millimeter-wave radar-based vehicle with a signal processing time of millimeter level and a real-time and efficient judgment of vehicle safety status in view of the defect that the passive safety technology in the prior art cannot reduce the accident rate. Active warning method, system and device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle active forewarning method, system and device based on millimeter wave radar
  • Vehicle active forewarning method, system and device based on millimeter wave radar
  • Vehicle active forewarning method, system and device based on millimeter wave radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0055] Such as figure 1 As shown, the vehicle-mounted active early warning method based on millimeter-wave radar of the present invention comprises the following steps:

[0056] S1. Obtain the vehicle driving information from each sensor, including the vehicle's driving speed v 1 , the distance d between the vehicle and the left and right lanes L and d R , the relative speed, relative distance R and relative angle α of the vehicle and the target vehicle, and the road surface adhesion coefficient f; wherein, the method for obtaining the relative motion information of the vehicle and the target ve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a vehicle active forewarning method, system and device based on millimeter wave radar. The forewarning method comprises following steps: obtaining vehicle driving information from each sensor; determining whether two vehicles are in a same lane based on the relative angle and relative distance between a vehicle and an objective vehicle; determining the longitudinal safe braking distance if the two vehicles are in a same lane, wherein Sw represents a warning safe distance, Sbr represents a safe braking distance, and R represents the relative distance; if R>Sw, the vehicle is in a safe driving state; if Sw>=R>Sbr, the vehicle is faced with a potential risk of collision; and if R<=Sbr, the vehicle is in an extremely dangerous state. By use of the forewarning method, system and device, the safety state of a vehicle is pre-estimated and early warning is made; accident rate is effectively reduced; the signal processing time is in milliseconds; the device is easy to install and maintain; good using effect is achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle active safety, in particular to a method, system and device for vehicle active early warning based on millimeter wave radar. Background technique [0002] Cars have gradually become a way of life for the masses, which greatly shortens the time for people's daily travel and material transportation, and promotes economic growth and social progress. However, the traffic safety problems that follow also seriously threaten people's lives and Property security and traffic safety issues are a common social problem and a worldwide problem. [0003] The occurrence of traffic accidents has great randomness and is restricted by many factors in the driving environment. An important factor is the driver's characteristics, such as driving experience, driving state and driving style; the other factor is the driving environment, such as in Driving in rainy and snowy weather or muddy roads is very prone to traffi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60Q9/00
CPCB60Q9/008
Inventor 陈德军王克浩刘阳龙辉代浩叶元戴楚
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap