Mountain road sharp turn section real-time vehicle speed early warning method

Abstract

The invention particularly discloses a mountain road sharp turn section real-time vehicle speed early warning method. The mountain road sharp turn section real-time vehicle speed early warning method comprises steps as below: step one: arranging basic information collection devices on vehicles and sharp turn roads, collecting information of roads and vehicles in real time; step two: constructing a calculation controller of road attachment coefficients and rolling resistance coefficients based on a BP neural network in a computer; step three: inputting each parameter collected in step one into the BP neural network controller for processing, outputting road attachment coefficients and rolling resistance coefficients of the vehicles at a curve position of the road; step four: calculating distances between the vehicles; step five: calculating the safety distances between the vehicles in the computer; step six: comparing the safety distance of the vehicles and the distances between the vehicles, then carrying out alarming for vehicles exceeding a limit speed.

Description

technical field [0001] The invention relates to a vehicle speed early warning system, in particular to a vehicle speed early warning method capable of ensuring driving safety on sharp curve sections of mountainous highways. Background technique [0002] The vehicle speed warning system is an important facility to ensure road traffic safety. Its main function is to make the driver slow down in time when there is a potential accident, so as to avoid traffic accidents, especially when the road alignment and weather conditions are poor. Combined with real-time weather and traffic conditions, it is particularly important to carry out vehicle speed warning. [0003] In addition, the paper of the 12th issue of the Journal of Shandong Jiaotong University in 2009-Research on the speed warning system of expressway curves based on image processing technology; the master's thesis of Northeast Agricultural University-The design of the warning system for crossing cars in the blind area of...

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Problems solved by technology

[0003] In addition, the paper of the 12th issue of the Journal of Shandong Jiaotong University in 2009-Research on the speed warning system of expressway curves based on image processing technology; the master's thesis of Northeast Agricultural University-The design of the warning system for crossing cars in the blind area of ​​mountain roads, journal information The design of the intelligent meeting car warning system in mountainous curves in the 6th issue of 2011 of the technology; the 6th issue of 2006 of the journal TV technology is a car curve meeting radar design based on Lingyang 61 single-chip microcomputer. Most of the above existing technologies do not have Considering the influence of different meteorological conditions and road design parameters on the driving state of the vehicle, it is impossible to construct an early warning scheme according to the real-time driving state of the vehicle, which is different from the method proposed in the present invention that combines real-time road, traffic and meteorological conditions to carry out early warning according to the respective driving states of the vehicle

[0004] In addition, the early warning scheme of the patented curve obstacle warning system (CN200820122886) does not consider whether the different driving states of the vehicle when entering the curve are necessary for its warning; Reminder, does not involve potential safety hazards between vehicles in the same direction; a video image recognition-based curve overspeed warning device (CN201120507735) is based on video image recognition for curve speed warning, and the device has poor applicability in low visibility conditions

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