CN110700131B

CN110700131B - Long tunnel distance information identification device based on visual features and use method

Info

Publication number: CN110700131B
Application number: CN201910966033.4A
Authority: CN
Inventors: 张俊友; 李丽
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2023-03-14
Anticipated expiration: 2039-10-12
Also published as: CN110700131A

Abstract

The invention discloses a long tunnel distance information identification device based on visual characteristics and a use method thereof. The position information of the mark and the marked line is set in advance in the navigation map, and the vehicle-mounted camera identifies the mark and the marked line and then is matched with the navigation map for positioning. The beneficial effects of the invention are as follows: through the arrangement of a special identification device, the attention of a driver is attracted, the brain of the driver is stimulated, and accidents caused by the fact that the driver has no evidence on the monotonous traffic condition of the tunnel are prevented; the hole walls with different colors can improve the psychological comfort of a driver and reduce the oppression feeling brought by a long tunnel. The method effectively makes up the position acquisition way when the navigation equipment fails due to signal loss of equipment such as a GPS and the like, correctly analyzes the driving distance of the tunnel and the length of the front tunnel, effectively prevents a driver from generating driving fatigue, and simultaneously reduces the traffic accident rate.

Description

Long tunnel distance information identification device based on visual features and use method

Technical Field

The invention relates to the technical field of traffic sign marking and the field of unmanned vehicle information identification and positioning, in particular to a traffic sign marking and a positioning driving distance of a long tunnel.

Background

The road traffic sign and the marking line are traffic facilities provided on a road and indicate specific management contents and behavior rules by predetermined figures, symbols, characters, lines, elevation marks, projected road signs, and the like.

In a long tunnel, although the cross section is wide, the scene is simple, the oppressive feeling in the tunnel is strong, if the vehicle is not provided with an inertial navigation device, the tunnel lacks of the cognitive indication marks of the distance to be traveled and the front distance, a driver cannot know the length and the traveling time of the front tunnel, anxiety is easy to generate, meanwhile, the unmanned vehicle travels in the tunnel, and cannot be accurately positioned by utilizing a GPS positioning system, and the corresponding device is lacked to provide a traveling position.

Tunnel top layer colour uses the top colour to be the dark colour at present, and both sides wall is the light colour for leading to, and most tunnel is dark grey and joins in marriage light yellow, has pleasing to the eye, dark easy maintenance, gives advantage such as driver's open sensation in driving a vehicle space, nevertheless causes visual fatigue for the driver easily to the tunnel of growing up, is unfavorable for the concentration of driver's attention.

The colors and patterns of the road surface, the wall and the top of the long-distance tunnel are basically consistent, the sight and the impression are single, a driver drives a vehicle in the tunnel, the scenes are repeated, the sight and the impression indications such as the brightness of lighting facilities, the head lamp of the vehicle and tail lamps of other vehicles are influenced, the vision, the depth of field, the hearing and the like of the driver are influenced, the visual fatigue is easily caused, the attention is not focused, and the like.

Disclosure of Invention

The invention aims to provide a long tunnel distance information identification device based on visual characteristics and a use method thereof.

In order to solve the technical problems, the invention provides a long tunnel distance information identification device based on visual characteristics and a use method thereof.

The tunnel driving distance indicating sign is a round traffic indicating sign; the upper part in the tunnel driving distance indication mark is provided with arrow-shaped patterns and characters, the inside of the arrow-shaped patterns is provided with total segment number figures of the number of tunnel dividing segments, the lower part in the tunnel driving distance indication mark is provided with rectangular-shaped patterns and characters, the inside of the rectangular-shaped patterns is provided with the number figures of the current tunnel dividing segments, the patterns of the rectangular-shaped patterns have geographical position information, and a navigation system is introduced.

The tunnel pavement marking is a white ground raised marking located in the middle of the road lane, the tunnel pavement marking is in a score form, and the score is the ratio of the number of the tunnel sections where the tunnel is located to the total number of the tunnel dividing sections.

The tunnel wall pattern color dominant hue can be set to be red, orange, yellow, green, cyan, blue, purple and other gradual colors according to the divided tunnel segments.

Compared with the prior art, the invention has the following beneficial effects:

the invention improves the attention of a driver in the driving process of the tunnel by designing a long tunnel distance information identification device based on visual characteristics and a use method, ensures that the driving distance and the front exit distance can be determined in real time in the driving process of the driver in the tunnel by utilizing the set tunnel driving distance indication mark and the set marking line, reminds the driving distance of the driver and improves the attention of the driver by designing the color dominant tone of the tunnel wall pattern which is changed along with the driving distance, prevents the driver from generating visual fatigue, and simultaneously enables the unmanned automobile or navigation equipment to accurately position by acquiring the position information of the mark and the marking line through a camera.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a tunnel driving distance indicating map of the present invention;

FIG. 2 is a dimension chart of a tunnel travel distance indicator of the present invention;

FIG. 3 is a road tunnel face plot of the present invention;

fig. 4 is a dominant hue diagram of the color of the tunnel wall pattern of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the tunnel driving distance indicator of the present invention is a circular traffic indicator, and adopts a reflective film, and simultaneously introduces geographical location information (such as longitude, latitude, altitude, etc.) of a marker pattern into a vehicle navigation system, and a car or navigation device can acquire the markers and the marker lines through a camera, match the markers and the marker lines with a navigation map, and perform positioning by using the location information.

As shown in figure 2, the road vehicle design speed of a common tunnel in China is 80km/h, so that the diameter of a circular indicating mark position is 100cm, the lining edge is 0.8cm, the height of Arabic numerals is 38cm, the word width is 20cm, the word thickness is 7cm, the total height of an arrow is 90cm, a single-hole tunnel is arranged at the top end for suspension, a multi-hole tunnel is arranged at two sides of a road, and other specific dimensions are designed according to the road traffic sign and marking specifications.

As shown in figure 3, the tunnel pavement marking is a white protruding marking, is arranged in the middle of a driving lane, and is designed according to the road traffic sign and marking specification, the tunnel pavement marking is used for reminding a driver of the current driving position, improving the attention of the driver, informing the driver of the front exit distance, and meanwhile, the unmanned vehicle scans and identifies the protrusion of the road marking through a vehicle-mounted camera or a laser radar to obtain the current geographic position information, so that the unmanned vehicle can also timely master the position information in the tunnel.

As shown in FIG. 4, the color of the patterns in the tunnel wall changes with the change of the driving distance of the driver in the tunnel, the tunnel can be divided into 8 parts according to the length, and the colors of the patterns in the tunnel wall can be respectively coated into gradually changed colors of red, orange, yellow, green, cyan, blue, purple and the like, so that the vision of the driver is stimulated, the visual fatigue of the driver is avoided, and the current driving distance can be generally known through the change of the colors.

Claims

1. A long tunnel distance information identification device based on visual features and a using method thereof are characterized in that: the tunnel pavement marking system comprises a tunnel driving distance indicating mark (1), a tunnel pavement marking (2) and a tunnel wall pattern color dominant hue (10-16);

the tunnel driving distance indicating sign (1) comprises graphs (3-4) and characters (5-6), wherein the graphs (3-4) are formed by an arrow shape (3) and a rectangle (4), and the characters (5-6) are formed by the total number of segments (5) obtained by dividing the whole tunnel length in proportion and the number of segments (6) where the current driving position of a driver is located;

the tunnel pavement marking (2) is a white ground raised marking, the specific size of which is designed according to the road traffic sign and marking specification, the marking is in a fractional form, the marking is respectively the total number (8) of the segments after the length of the whole tunnel is divided equally according to a certain length according to the driving direction, a fractional line (9) and the number (7) of the segments of the current driving position of a driver;

the tunnel wall pattern color dominant hue (10-16) can be different gradual colors such as red, orange, yellow, green, cyan, blue, purple and the like in sequence.

2. The visual feature-based long tunnel distance information identification device and the use method according to claim 1, wherein: the tunnel driving distance indicating mark (1) is a circular indicating mark with a reflecting film and a diameter of 100 cm.

3. The visual feature-based long tunnel distance information identification device and the use method according to claim 1, wherein: the geographic information position of the tunnel driving distance indication mark (1) is connected with a navigation system, and the unmanned vehicle can be matched with a navigation map after acquiring the mark through a camera and is positioned by utilizing position information.