CN108961791B - Intelligent induction and warning system for tunnel entrance in foggy area - Google Patents
Intelligent induction and warning system for tunnel entrance in foggy area Download PDFInfo
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- CN108961791B CN108961791B CN201810960430.6A CN201810960430A CN108961791B CN 108961791 B CN108961791 B CN 108961791B CN 201810960430 A CN201810960430 A CN 201810960430A CN 108961791 B CN108961791 B CN 108961791B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/40—Arrangements responsive to adverse atmospheric conditions, e.g. to signal icy roads or to automatically illuminate in fog; Arrangements characterised by heating or drying means
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
- E01F9/524—Reflecting elements specially adapted for incorporation in or application to road surface markings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/615—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
Abstract
The invention relates to the technical field of highway tunnel safety facilities, in particular to an intelligent induction and warning system for a tunnel entrance in a foggy area; the variable speed limiting device comprises a visibility detector, a variable speed limiting plate, a control module and a calculation module, wherein the visibility detector is arranged on the left side of a road, and the variable speed limiting plate is arranged on the right side of the road; a plurality of guiding devices are arranged on the road side line at equal intervals, the visibility detector is connected with the computing module, and the control module is respectively connected with the variable speed limiting plate, the guiding devices and the computing module; the intelligent variable speed limiting device has a reasonable structure, realizes intelligent variable speed limiting at the entrance of the tunnel, and can effectively reduce traffic accidents caused by overhigh driving speed; the intelligent guide fog lamp system composed of the LED lamp and the retro-reflection mark realizes illumination energy conservation and visual illusion speed reduction.
Description
Technical Field
The invention relates to the technical field of highway tunnel safety facilities, in particular to an intelligent induction and warning system for a tunnel entrance in a foggy area.
Background
The heavy fog weather is always a great hidden danger of road traffic safety, and statistical data shows that the traffic accidents caused by heavy fog are increasingly increased and account for more than 25% of the total number of road accidents. Meanwhile, road traffic accidents caused by heavy fog, particularly expressways, are quite serious traffic accidents and multi-vehicle traffic accidents, and the accident influence scale is large. The foggy weather causes a sharp decrease in the visible distance of the driver, making it difficult to find an obstacle ahead of the road in time and take a correct operation at a safe distance in a high-speed driving state. In addition, the drifting group fog is the first accident which is most easy to cause traffic accidents in foggy weather, and is called the first killer of the expressway, and the sudden visibility reduction of the drifting group fog causes that the expressway management departments cannot take corresponding traffic management measures such as speed limit, warning and the like in time, so that the accident probability is further increased.
The road tunnel is greatly located in a mountain area in one step, and the visible distance of a driver is reduced due to frequent heavy fog weather. Meanwhile, the cross section of the road at the tunnel section is discontinuous with that of the common road section, so that the phenomenon that the road and the tunnel are different in width easily causes the accident that a driver at the entrance of the tunnel collides with the tunnel door. In foggy weather, a driver is more difficult to find the entrance of the tunnel and the correct driving direction of the lane, and the accident that the driver collides with the road side or the tunnel portal is easily caused. The driving speed of the driver is also an important factor influencing traffic safety in foggy weather, and the driving safety at the entrance of the foggy weather tunnel can be effectively improved by reducing the driving speed of the driver. Therefore, an accident active prevention mechanism can be constructed by reasonably setting the road warning and inducing facilities, and the traffic accident occurrence probability of the road tunnel entrance in the foggy area is effectively reduced.
Disclosure of Invention
The invention aims to provide an intelligent induction and warning system for a tunnel entrance in a foggy area, which has a reasonable structure and can improve the driving safety of a tunnel road through a variable speed limit and a guide fog lamp on the basis of considering the identification sight distance, the parking sight distance and the reaction time of a driver, aiming at the defects and the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to an intelligent induction and warning system for a tunnel entrance in a foggy area, which comprises a variable speed limiting device, wherein the variable speed limiting device comprises a visibility detector, a variable speed limiting plate, a control module and a calculation module, the variable speed limiting device is arranged at an A section in front of the tunnel entrance, the distance between the A section and the tunnel entrance is a recognition visual distance S, the visibility detector is arranged at the left side of a road, and the variable speed limiting plate is arranged at the right side of the road; a plurality of guiding devices are arranged on a road side line between the section A and the tunnel entrance in an equidistant spacing mode, the distance between the guiding devices is L, the visibility detector is connected with the calculating module, and the control module is respectively connected with the variable speed limiting plate, the guiding devices and the calculating module.
According to the scheme, the calculation formula for identifying the sight distance S is as follows:
wherein: v is the speed limit value of the road tunnel, t1For the recognition time, t2To determine time, t3In order to achieve the reaction time,
the road surface adhesion coefficient is, i is the road longitudinal slope, and s is the safe distance.
According to the scheme, the visibility detector obtains a sight distance value D, the time required by the driver to safely stop is T, and the calculation formula of T is as follows:
wherein: v is the speed limit value of the road tunnel, t4In order to achieve the reaction time,
is the road surface adhesion coefficient, i is the road longitudinal slope;
the calculation module calculates the maximum speed value V of the vehicle running as D/T, when V is more than or equal to 80km/h, the speed limit value of the variable speed limit plate is 80km/h, when V is less than 80km/h, the ten digit of V is taken as a, and the speed limit value of the variable speed limit plate is (10a +10) km/h.
According to above scheme, guiding device is including guide fog lamp and cat eye spike, and the guide fog lamp is installed on road guardrail, and cat eye spike sets up on the road sideline, and cat eye spike sets up on the same cross section of road with the guide fog lamp one-to-one.
According to the scheme, a retro-reflection mark is arranged below the guide fog lamp, and the guide fog lamp is connected with the control module; when the visibility value D detected by the visibility detector is less than or equal to the parking visibility, the guide fog lamps are all lightened to enter a guide state, and the retro-reflective targets play an auxiliary induction role; otherwise, the guide fog lamp is partially lightened to enter an auxiliary lighting state, and the retro-reflective mark plays a main inducing role. .
According to above scheme, guiding device still includes the pilot sign, and the pilot sign is located the tunnel entrance, is equipped with red white contrary marking line of playing in the beginning on the pilot sign, is equipped with a plurality of LED lamps on the pilot sign, and a plurality of LED lamps are arranged with the array of "murder" word on the pilot sign, thereby a plurality of LED lamps are connected with controlling means and realize ↙, ↘ and the combination sign of X shape.
The invention has the beneficial effects that: the intelligent variable speed limiting device has a reasonable structure, aims at the characteristics of low visibility of the tunnel entrance in the foggy area and easiness in occurrence of collision accidents, combines the decision visual range, the parking visual range and the safe parking requirement of a driver, realizes the intelligent variable speed limiting of the tunnel entrance, and can effectively reduce traffic accidents caused by over-high driving speed and insufficient reaction and operation time of the driver;
meanwhile, the requirement of illumination energy conservation of the mountain highway tunnel is considered, the intelligent guide fog lamp system consisting of the LED lamps and the retro-reflectors realizes illumination energy conservation while enriching the induction information obtained by the driver, and the intelligent guide fog lamp system and the roadside cat eye spikes are arranged together in a high-frequency mode to realize visual illusion deceleration of the driver at the entrance of the tunnel;
the indicating sign and the warning sign that contrary beacon and LED lamp are constituteed have direction of traffic instruction function and road danger warning function, can adopt different mode to the difference that sets up the position, can improve the utilization ratio of facility.
Drawings
FIG. 1 is a schematic view of the arrangement of the present invention on a road surface;
FIG. 2 is a schematic view of a guided fog lamp configuration of the present invention;
FIG. 3 is a schematic view of the structure of the indicator of the present invention;
fig. 4 is a schematic diagram of the overall operational logic of the present invention.
In the figure:
1. a visibility detector; 2. a variable speed-limiting plate; 3. a guide fog lamp; 4. cat eye spikes; 5. an indication mark; 11. a control module; 12. a calculation module; 31. a retro-reflective label; 51. retro-reflecting and marking a bottom marking line; 52. an LED lamp.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the intelligent guidance and warning system for the tunnel entrance in the foggy area comprises a variable speed limiting device, wherein the variable speed limiting device comprises a visibility detector 1, a variable speed limiting plate 2, a control module 11 and a calculation module 12, the variable speed limiting device is arranged at a section a in front of the tunnel entrance, the distance between the section a and the tunnel entrance is a recognition sight distance S, the visibility detector 1 is arranged at the left side of the road, and the variable speed limiting plate 2 is arranged at the right side of the road; a plurality of guiding devices are arranged on a road side line between the section A and the tunnel entrance in an equidistant spacing mode, the distance between the guiding devices is L, the visibility detector 1 is connected with a computing module 12, and a control module 11 is respectively connected with a variable speed limiting plate 2, the guiding devices and the computing module 12; in consideration of the complexity of a tunnel entrance section in foggy days, the invention provides that a visibility detector 1, a variable speed-limiting plate 2 and a guiding fog lamp 3 are arranged at a position which is far away from the tunnel entrance and identifies a sight distance, the visibility detector 1 acquires the identification distance D of a driver and sends the identification distance D to an intelligent calculation module 12, and after a safe speed-limiting value is obtained through calculation, the identification distance D is output to the variable speed-limiting plate 2 through a control module 11 to realize intelligent speed limitation; meanwhile, the guiding devices are arranged on the two sides of the road to play a role in assisting guidance and illumination, so that the driving speed of a driver is reduced, and the driving safety of the tunnel road is improved.
The working principle of the invention is as follows:
aiming at the characteristics of accidents that a visibility of a tunnel entrance section in a foggy area is low, a driver is easy to deviate from a lane and hit a side wall of a tunnel door, the invention provides an intelligent guidance and warning system for the tunnel entrance in the foggy area, so that the driving speed of the driver is reduced and guidance information is enriched in two aspects of traffic management and accident active prevention, and the traffic accident occurrence probability of the tunnel entrance in the foggy area is effectively reduced; the system is composed of a visibility detector 1, a variable speed-limiting plate 2, a roadside guide fog lamp 3, a cat eye spike 4 and a warning mark formed by a punctiform LED indicating mark 5, wherein the visibility detector 1 detects the visible sight distance of a driver in a road section in front of a tunnel entrance in real time, and the variable speed-limiting plate 2 and the roadside guide fog lamp 3 are controlled to work through a control module 11 so as to reduce the driving speed of the driver in heavy fog weather and increase the visible sight distance.
Considering that the maximum speed limit value of a highway tunnel is generally 80km/h, the maximum identification sight distance S required by calculation of 80km/h is taken, and the calculation formula of the identification sight distance S is as follows:
wherein: v, taking the common speed limit of the highway tunnel to be 80 km/h; t is t1Taking 3s for reading time; t is t2Taking 2s for judging time; t is t3Taking 2s as the reaction time;
taking 0.21 as the road surface adhesion coefficient; i is a longitudinal slope of the road, and 0 is taken; s is a safe distance, and is 5-10 m; the calculation module 11 obtains the identification sight distance S of 303-308 m, and therefore a variable speed limiting device is arranged on the section A away from the tunnel entrance 303-308 m.
Considering that the driving speed is a main influence factor of driving safety at the entrance of a tunnel in foggy days, combining the characteristics of visible distance change of drivers in foggy days in different degrees, and combining the visibility detector 11 to provide an intelligent speed control calculation module 12 meeting the requirement of safe parking of the drivers: the visibility detector 1 obtains a sight distance value D, a time required by a driver to safely stop is T, and a calculation formula of T is as follows:
wherein: v, taking the common speed limit of the highway tunnel to be 80 km/h; t is t3Taking 2s as the reaction time;
taking 0.21 as the road surface adhesion coefficient; i is a longitudinal slope of the road, and 0 is taken; calculating the time required by safe parking according to 80km/h to be 5 s; the calculation module 12 calculates the maximum speed value V of the vehicle running as D/T, when V is greater than or equal to 80km/h, the speed limit value of the variable speed limit board 2 is 80km/h, when V is less than 80km/h, the tens of V is taken as a, and the speed limit value of the variable speed limit board 2 is 10a +10 km/h.
The guiding device comprises a guiding fog lamp 3 and cat-eye spikes 4, the guiding fog lamp 3 is installed on a road guardrail, the cat-eye spikes 4 are arranged on a road side line, and the cat-eye spikes 4 and the guiding fog lamps 3 are arranged on the same cross section of the road in a one-to-one correspondence manner; a retro-reflection mark 31 is arranged below the guide fog lamp 3, and the guide fog lamp 3 is connected with the control module 11; when the visibility value D detected by the visibility detector 1 is less than or equal to the parking visibility, the guide fog lamps 3 are all lighted to enter a guide state, and the retro-reflective targets 31 play an auxiliary induction role; otherwise, the fog lamp 3 is guided to be partially lighted to enter an auxiliary lighting state, and the retro-reflective mark 31 plays a main inducing role; in order to realize the illumination energy saving of highway tunnel highway section, consider driver's safety parking demand, through the guide fog lamp 3 that LED fog lamp and contrary beacon 31 constitute, combine visibility detector 1, realize the intelligent control of guide fog lamp 3 operating condition through calculation module 12 and control module 11: when the visibility detector 1 detects that the visible distance is less than or equal to the parking visual distance (calculated according to 80km/h in the same way), the LED lamp part of the fog lamp 3 is guided to work, and the retroreflection mark 31 plays an auxiliary induction role at the moment; the parking sight distance calculation formula is as follows:
wherein: v, taking the common speed limit of the highway tunnel to be 80 km/h; t is t3Taking 2s as the reaction time;
taking 0.21 as the road surface adhesion coefficient; i is a longitudinal slope of the road, and 0 is taken; s is a safe distance, and is 5-10 m; and calculating the parking sight distance according to 80km/h to be 170-175 m.
The guiding device further comprises an indicating mark 5, the indicating mark 5 is arranged at the entrance of the tunnel, a red-white retro-reflective bottoming marking line 51 is arranged on the indicating mark 5, a plurality of LED lamps 52 are arranged on the indicating mark 5, the LED lamps 52 are arranged in a matrix of a Chinese character 'fierce', and the LED lamps 52 are connected with a control device so as to realize ↙, ↘ and X-shaped combined marks; the working modes of the indicating mark 5 are divided into an indicating mode and a warning mode: when the indicating mode works, the indicating mark 5 is placed at the right side of the tunnel entrance, and the LED lamp 52 is turned on to form a part ↙; when an accident occurs at the entrance of the tunnel or the road is overhauled, the warning mode is started, the mark is placed 150m before the accident occurs, and the LED lamp 52 is turned on to form an X shape.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (2)
1. The utility model provides a many fog area tunnel entry intelligence is induced and warning system, includes variable speed limiting device, its characterized in that:
the variable speed limiting device comprises a visibility detector (1), a variable speed limiting plate (2), a control module (11) and a calculation module (12), the variable speed limiting device is arranged at a section A in front of a tunnel entrance, the distance between the section A and the tunnel entrance is a recognition sight distance S, the visibility detector (1) is arranged on the left side of a road, and the variable speed limiting plate (2) is arranged on the right side of the road;
a plurality of guiding devices are arranged on a road side line between the section A and the tunnel entrance in an equidistant spacing mode, the distance between the guiding devices is L, the visibility detector (1) is connected with the computing module (12), and the control module (11) is respectively connected with the variable speed limiting plate (2), the guiding devices and the computing module (12);
the guiding device comprises a guiding fog lamp (3) and cat eye spikes (4), the guiding fog lamp (3) is installed on a road guardrail, the cat eye spikes (4) are arranged on a road side line, and the cat eye spikes (4) and the guiding fog lamp (3) are arranged on the same cross section of the road in a one-to-one correspondence manner;
a retro-reflection mark (31) is arranged below the guide fog lamp (3), and the guide fog lamp (3) is connected with the control module (11); when the sight distance value D detected by the visibility detector (1) is smaller than or equal to the parking sight distance, the guide fog lamps (3) are all lightened to enter a guide state, and the retro-reflective targets (31) play a role in assisting and inducing; otherwise, the fog lamp (3) is guided to be partially lightened to enter an auxiliary lighting state, and the retro-reflective mark (31) plays a main inducing role;
the calculation formula for identifying the sight distance S is as follows:
wherein: v is the speed limit value of the road tunnel, t1For the recognition time, t2To determine time, t3In order to achieve the reaction time,
the road surface adhesion coefficient is shown as i, i is a longitudinal slope of the road and s is a safe distance;
the visibility detector (1) obtains a sight distance value D, the time required by the driver to safely stop is T, and the calculation formula of T is as follows:
wherein: v is the speed limit value of the road tunnel, t4In order to achieve the reaction time,
is the road surface adhesion coefficient, i is the road longitudinal slope;
the calculation module (12) calculates the maximum speed value V of the vehicle running as D/T, when V is more than or equal to 80km/h, the speed limit value of the variable speed limit plate (2) is 80km/h, when V is less than 80km/h, the tens of V is taken as a, and the speed limit value of the variable speed limit plate (2) is (10a +10) km/h.
2. The intelligent induction and warning system for the tunnel entrance in the foggy area according to claim 1, wherein: the guiding device further comprises an indicating mark (5), the indicating mark (5) is arranged at the entrance of the tunnel, red and white retro-reflective backing marking lines (51) are arranged on the indicating mark (5), a plurality of LED lamps (52) are arranged on the indicating mark (5), the LED lamps (52) are arranged in a Chinese character 'er' array on the indicating mark (5), and the LED lamps (52) are connected with a control device to achieve ↙, ↘ and X-shaped combined marks.
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| CN115083183A (en) * | 2022-06-11 | 2022-09-20 | 杨立柱 | Intelligent induction lamp system for expressway |
| CN115497308B (en) * | 2022-09-13 | 2023-12-05 | 招商局重庆交通科研设计院有限公司 | Intelligent perception-based integrated tunnel entrance flexible blocking control system and method |
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