CN108492596B - Visual perception-based underground interchange rear-end collision prevention method - Google Patents

Abstract

The invention provides a visual perception-based underground interchange rear-end collision prevention method. According to the inverse perspective principle, the LED screens are distributed according to the density gradient from dense to sparse; selecting LED screens with two colors to be alternately arranged according to the cue discontinuous effect; the color of the LED screen is set to red and yellow according to the relevant theory of color psychology. Compared with the prior art, the LED screens are alternately distributed in different colors and density gradient from dense to sparse to guide a driver to underestimate the distance, so that the vehicle distance is enlarged, and the probability of rear-end accidents is reduced; by applying the psychology of color theory, selecting red and yellow which can enhance stimulation as the arrangement colors of the LED screen so as to achieve the warning effect on the driver; the rear-end collision accidents can be effectively reduced from the guide and control angles, and the safe and efficient operation of the underground interchange is guaranteed.

Description

Visual perception-based underground interchange rear-end collision prevention method

Technical Field

The invention relates to an intelligent traffic technology, in particular to a visual perception-based underground interchange rear-end collision prevention method.

Background

In recent years, the underground interchange has been rapidly developed along with the issuance and implementation of urban underground road engineering design specifications because of the shortage of land for urban overground roads, traffic congestion, tail gas and serious noise pollution in China. However, the severe traffic environment underground is very likely to cause traffic accidents, and most of the accidents are rear-end collisions. The reason for the accident is analyzed, the contrast of visual stimuli in a space is reduced due to the fact that the illumination of a closed underground environment is low and the concentration of pollutants is high, a driver overestimates the distance between the two vehicles, the distance between the two vehicles is too small, a series of physiological and psychological reactions such as mental fatigue, slow response, depression and uneasiness of the driver can be caused easily to the driver due to the poor underground driving environment, the driving load is increased, and the rear-end collision accident is easy to be induced.

At present, the measures taken to solve the problems mainly comprise a bayonet system, a vibration marking line and a speed limit sign. The bayonet system can be arranged only at a certain place, and the cost is high; the vibration marked line is easy to cause the vehicle to generate behaviors such as skidding and the like in a closed and wet underground environment, so that potential safety hazards exist; the speed-limiting sign is difficult to identify in underground space with low visibility, and has little effect. Therefore, a new solution is urgently needed for the underground interchange, and the purpose of enlarging the vehicle distance can be achieved in a severe underground environment, so that the occurrence of rear-end collisions is reduced, and the safe and efficient operation of the interchange is guaranteed.

Disclosure of Invention

In order to solve the technical problem, the invention provides a visual perception-based underground interchange rear-end collision prevention method.

The technical scheme adopted by the invention is as follows: a visual perception-based underground interchange rear-end collision prevention method is characterized by comprising the following steps:

step 1: uniformly segmenting the underground interchange road, and arranging the LED screens according to the density gradient from dense to sparse according to the inverse perspective principle;

step 2: selecting LED screens with two colors to be alternately arranged according to the cue discontinuous effect;

and step 3: the color of the LED screen is set to red and yellow according to the relevant theory of color psychology.

Preferably, in the step 1, the underground interchange road is uniformly segmented into N sections, the serial number of each section of road is 1, 2.., N, the serial numbers of the roads are 1-N, the driving direction of the vehicle is provided, the length of each section is S/N, and S is the total length of the underground interchange road layout facilities;

in the step 1, the inverse perspective principle is that linear perspective information diverged at a far end can cause underestimation of distance, LED screens are distributed according to dense-to-sparse density gradient, the distribution number of the LED screens in a 1 st road to an Nth road is reduced in sequence, and the distribution interval of the LED screens in an i th road is as follows:

d_i＝L*2^i-1i∈[1,N]

wherein i is a road serial number, and L is a first section of LED screen arrangement interval;

the number of the LED screens arranged in the ith road section is as follows:

compared with the prior art, the LED screens are alternately distributed in different colors and density gradient from dense to sparse to guide a driver to underestimate the distance, so that the vehicle distance is enlarged, and the probability of rear-end accidents is reduced; by applying the psychology of color theory, red and yellow which can enhance stimulation are selected as the arrangement colors of the LED screen, so as to achieve the warning effect on the driver; the rear-end collision accidents can be effectively reduced from the guide and control angles, and the safe and efficient operation of the underground interchange is guaranteed; the invention also has the advantages of low cost, low power consumption and long durability, and is a powerful supplement to the blank in reducing the rear-end collision accidents of underground interchange in China at present.

Drawings

FIG. 1: is a flow chart of the method of the present invention.

Detailed Description

In order to facilitate the understanding and implementation of the present invention for those of ordinary skill in the art, the present invention is further described in detail with reference to the accompanying drawings and examples, it is to be understood that the embodiments described herein are merely illustrative and explanatory of the present invention and are not restrictive thereof.

The embodiment of the invention takes the interchange under the Wanshishan-Zhongzhu mountain of Xiamen city as an example, and collects the speed data of historical vehicles; selecting the LED screen with the length of 0.5m and the width of 0.15m, wherein the arrangement position is 1.2m away from the ground and is flush with the visual height of a driver; the brightness of the selected LED screen is 80-46 cd/m²。

Embodiments of the present invention are discussed in conjunction with FIG. 1. The technical scheme adopted by the invention is a visual perception-based underground interchange rear-end collision prevention method, which specifically comprises the following steps:

step 1: uniformly segmenting the underground interchange road, and arranging the LED screens according to the density gradient from dense to sparse according to the inverse perspective principle;

in the step 1, the underground interchange road is uniformly segmented into 4 sections, the serial number of each section of road is 1,2, a.

In the step 1, the inverse perspective principle is that linear perspective information diverged at a far end can cause underestimation of distance, LED screens are distributed according to dense-to-sparse density gradient, the distribution number of the LED screens in a 1 st road to an Nth road is reduced in sequence, and the distribution interval of the LED screens in an i th road is as follows:

d_i＝L*2^i-1i∈[1,N]

wherein, i is a road serial number, and L is 2m, which is a first section of LED screen arrangement interval;

the number of the LED screens arranged in the ith road section is as follows:

step 2: selecting LED screens with two colors to be alternately arranged according to the cue discontinuous effect;

and step 3: the color of the LED screen is set to red and yellow according to the relevant theory of color psychology.

It should be understood that the above description of the preferred embodiments is given for clarity and not for any purpose of limitation, and that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (1)

1. A visual perception-based underground interchange rear-end collision prevention method is characterized by comprising the following steps:

step 1: uniformly segmenting the underground interchange road, and arranging the LED screens according to the density gradient from dense to sparse according to the inverse perspective principle;

step 2: selecting LED screens with two colors to be alternately arranged according to the cue discontinuous effect;

and step 3: setting the colors of the LED screen to be red and yellow according to the related theory of color psychology;

step 1, arranging the LED screen, wherein the arrangement position is flush with the visual height of a driver;

in the step 1, the underground interchange road is uniformly segmented into N sections, the serial number of each section of road is 1,2,.. and N, the serial numbers of the roads are 1-N and are the driving direction of a vehicle, the length of each section is S/N, and S is the total length of underground interchange road layout facilities;

in the step 1, the inverse perspective principle is that linear perspective information diverged at a far end can cause underestimation of distance, LED screens are distributed according to dense-to-sparse density gradient, the distribution number of the LED screens in a 1 st road to an Nth road is reduced in sequence, and the distribution interval of the LED screens in an i th road is as follows:

d_i＝L*2^i-1i∈[1,N]

wherein i is a road serial number, and L is a first section of LED screen arrangement interval;

the number of the LED screens arranged in the ith road section is as follows:

Images