Road network sensing and indicating device for expressway

Abstract

The utility model relates to the field of traffic safety control, and particularly discloses a road network sensing and indicating device for an expressway, which comprises an awning, an indoor light intensity sensor, an outdoor light intensity sensor and a visibility sensor, and is characterized in that the awning comprises a truss, a sun shield, a driving motor, a bracket and a solar tracker; the sun shield bodies are sequentially arranged at the top end of the truss in the direction of the truss, supports are fixed to the two ends of the bottom wall of each sun shield body respectively, the supports are in key connection to the output end of a driving motor, and the sun shield bodies can be driven by the driving motor to axially and horizontally rotate; the driving motor is electrically connected with an external controller, and the controller is electrically connected with the outdoor light intensity sensor, the indoor light intensity sensor, the visibility sensor and the sun tracker. According to the scheme, the problem that traffic accidents are caused due to the fact that gaps among the photovoltaic panels on the sunshade are prone to being insufficient in light shielding when an exit and an entrance of an existing long tunnel built in a mountainous area are covered by sudden agglomerate fog can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of traffic safety control, concretely relates to a road network sensing and indicating device for expressway. BACKGROUND

[0002] With the sustained growth of China's economy, the field of transportation has achieved rapid development in recent years, and the construction range of expressways has expanded from densely populated plain areas to economically lagging mountainous areas. Therefore, in the process of building expressways in mountainous areas, long and large tunnels with a length of more than 1000 meters gradually become an indispensable part of this type of project. In today's expressways under construction or already open to traffic, the proportion of tunnels in the total mileage is getting higher and higher, and the number of long and large tunnels is increasing. Combined with the requirements of the Ministry of Transport for engineering quality, people pay more and more attention to the safety and comfort of expressway traffic, but in the process of expressway transportation, the probability of traffic accidents in long and large tunnel sections is relatively high, the main objective reasons are the key factors such as the transition of light and dark junctions at the entrance and exit of the tunnel, insufficient lighting in the tunnel, and visual fatigue caused by long-time single driving, which makes the driving safety problem in the process of long and large tunnel transportation increasingly prominent, and it is imperative to seek innovative applications in tunnel traffic safety.

[0003] Currently, there are some deficiencies in the process of transportation of expressway tunnels that have been put into operation: for high-altitude tunnels built in mountainous areas, due to the large diurnal temperature difference in mountainous areas and good water vapor conditions, within one to two days after rain, water vapor easily condenses to form fog, which has the characteristics of suddenness and locality, and in the fog-prone period of autumn and winter, it may suddenly appear in a certain section of the expressway, the visibility is still good when the driver enters the tunnel, but the tunnel exit is suddenly covered with fog, combined with the reflection and scattering of a large amount of light by the fog, which makes it difficult for the driver to see the situation in front of him when driving out of the tunnel, and it is difficult to identify signs, markings, and vehicle distances, and cannot timely receive or feedback information from other traffic participants, increasing the risk of traffic accidents.

[0004] The existing Chinese invention patent, such as the announcement number CN118407352A, discloses a fog cluster multi-occurrence area curved slope tunnel traffic safety improvement system, which comprises an arc-shaped rod arranged outside the tunnel within the identification sight distance, a double-row truss within the parking sight distance outside the tunnel, and solar photovoltaic panels laid between the double-row trusses. Each solar photovoltaic panel has a length of 1.8-2 m and a width of 1-1.5 m, and is spaced by 40-50 cm in the middle of each solar photovoltaic panel, thereby playing a role of sunshade and reducing the light change at the tunnel entrance. The defect of the above-mentioned scheme is that: due to the existence of wide gaps between the sunshades, the sun is irradiated at varying angles on the entrance and exit of the tunnel every day, so that the sunlight directly passes through the gap between two adjacent solar photovoltaic panels within a certain time period, thereby possibly causing direct penetration under the sunshade, and when encountering fog cluster weather, the fog cluster is greenish white or milky white, with high brightness and increased reflected light, which still affects the driver's vision. Utility model content

[0005] The utility model provides a road network perception and indication device for expressway, to solve the long and large tunnel built in the mountainous area highland when being covered by the sudden fog cluster at the entrance and exit, the gap between each photovoltaic panel on the sunshade is easy to cause the insufficient shading to the driver's vision and cause traffic accidents.

[0006] To solve the above-mentioned problems, the technical scheme adopted by the utility model is as follows: a road network perception and indication device for expressway, comprising a sunshade installed outside the tunnel exit, an indoor light intensity sensor installed inside the tunnel exit, an outdoor light intensity sensor installed beside the sunshade, and a visibility sensor, wherein the sunshade comprises a truss, sunshades, a driving motor, a support, and a sun tracker, the truss is arranged in the shape of a "door" along the tunnel exit, the sunshades are sequentially arranged at the top end of the truss along the direction of the truss, the bottom wall of each sunshade is fixed with a support at both ends, and the support is connected to the output end of the driving motor, so that the sunshade can be axially horizontally rotated by the driving motor;

[0007] The driving motor is electrically connected to an external controller, and the controller is electrically connected to the outdoor light intensity sensor, the indoor light intensity sensor, the visibility sensor, and the sun tracker.

[0008] The basic principle of the scheme is that: the visibility sensor sends the visibility to the controller, when the tunnel is in non-fog cluster weather, the visibility is high, the sun tracker can obtain the angle of the sun, the driving motor adjusts the angle of the sunshade to be perpendicular to the sunlight according to the angle of the sun, thereby ensuring that the sunshade can reduce the outdoor light intensity at the tunnel exit to the greatest extent and avoiding the "white hole" effect on the driver's vision.

[0009] When the outside of the tunnel is fog weather, the outdoor visibility is reduced, the angle of the sun cannot be obtained through the sun tracker, and the contrast of the light at the tunnel exit indoor and outdoor needs to be judged through the outdoor light intensity sensor and the indoor light intensity sensor, and the controller controls the driving motor to rotate according to the contrast, the driving motor adjusts the angle of the sun shield, and the light intensity contrast in the line of sight of the driver when driving out of the tunnel is ensured to be within the preset value range.

[0010] The beneficial effects of the scheme are that: there is a wide gap between the sunshades, if the sunlight directly passes through the gap and shines on the tunnel exit, it may directly affect the driver's line of sight, the scheme sets a sun tracker, directly obtains the angle of sunlight at different times through the sun tracker, so that the controller directly controls the driving motor to adjust the angle of the sun shield, and the sun shields in the scheme are adjacent, ensuring that the light can be effectively blocked, reducing the impact of light on the driver. In fog weather, the fog is milky white or greenish white, so a large amount of reflected light affects the human eye, since the indoor light intensity sensor and the outdoor light intensity sensor are provided in the scheme, the angle of the sun shield is adjusted according to the contrast of the indoor and outdoor light intensity, ensuring that the indoor and outdoor light intensity changes within the range that the human eye can adapt to, thereby reducing the impact of the light change at the tunnel exit on the driver.

[0011] Further, a warning board is installed at the top of the inner wall of the tunnel exit, and the warning board is electrically connected to the controller. The warning board timely informs the personnel in the tunnel of the fog weather information, and indicates the driver to make corresponding light action for the fog.

[0012] Further, a plurality of indicator lights are arranged on the inner wall of the tunnel exit in a circumferential direction, and the indicator lights are electrically connected to the controller. The indicator lights guide the driver to pay attention to the traffic situation and safety state in the tunnel.

[0013] Further, the sun shield is a colored sun plate. The colored sun plate filters light while allowing certain light to pass through.

[0014] Further, the color of each sun shield gradually fades from close to the tunnel exit to far away from the tunnel exit. This facilitates the driver to adapt to the light.

[0015] Further, the support is a reverse triangular type, and the vertex of the lower end of the support is coaxially arranged with the output end of the driving motor. The reverse triangular design of the support improves the stability of the sun shield on the output end of the driving motor. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a side view schematic diagram of an embodiment of the utility model. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method:

[0019] The reference numerals in the accompanying drawings include: tunnel exit 1, sunshade 2, light shield 21, bracket 22, truss 23, drive motor 24, solar tracker 25, warning board 3, visibility sensor 4, indicator light 5, indoor light intensity sensor 6, and outdoor light intensity sensor 7.

[0020] The basic implementation examples are as follows: Figure 1 To be continued Figure 2 As shown:

[0021] A road network sensing and indication device for highways includes a sunshade 2 installed outside the tunnel exit 1. The sunshade 2 is installed along the length of the road and includes a support 22, a solar tracker 25, a truss 23, and a drive motor 24. A vertical truss 23 is erected along the tunnel entrance. Specifically, the truss 23 is gantry-shaped, with several rows of light-shielding panels 21 spaced apart at the top of the gantry. The light-shielding panels 21 are long and strip-shaped, made of colored polycarbonate sheets. Supports 22 are fixed to the bottom surfaces at both ends of the light-shielding panels 21. The supports 22 are inverted triangular in shape. A drive motor 24 is installed between the two supports 22 of each light-shielding panel 21. The drive motor 24 is a dual-axis motor, with its two output ends horizontally positioned and keyed to the lower apexes of the two supports 22 respectively. When the dual-axis motor rotates, it drives the brackets 22 at both ends of the motor to swing freely in the vertical direction around the lowest vertex of the inverted triangle of the bracket. When the brackets 22 are driven synchronously, the light-shielding plates 21 on the brackets 22 form a certain angle with the horizontal plane. In this embodiment, all light-shielding plates rotate synchronously and remain parallel to each other.

[0022] To enhance the transition effect of the light-shielding plate 21, the light-shielding plate 21 is set to a gradually lighter color from the direction near the tunnel exit to the direction away from the tunnel exit.

[0023] The solar tracker 25 is installed on the side of the sunshade 2. The solar tracker 25 is electrically connected to the controller of the peripheral device. The controller is electrically connected to the drive motor 24. The controller is used to control the drive motor 24 to work until the sunshade 2 is facing the sunlight according to the sun position obtained by the solar tracker 25.

[0024] The indoor light intensity sensor 6 is installed on the inner wall of the exit of the tunnel, the visibility sensor 4 is installed beside the sunshade canopy 2, and the outdoor light intensity sensor 7 is installed below the sunshade canopy 2. The outdoor light intensity sensor 7, the indoor light intensity sensor 6 and the visibility sensor 4 are electrically connected to the controller. The controller is also used to receive the visibility information, the indoor light intensity information and the outdoor light intensity information, and to determine whether there is a fog bank at the current tunnel exit according to the visibility information. When the visibility information is lower than a preset value, the controller controls the operation of the driving motor 24 according to the contrast between the preset indoor light intensity value and the outdoor light intensity value.

[0025] The warning board 3 is hung on the top wall of the exit of the tunnel, and the warning board 3 is electrically connected to the controller.

[0026] A ring of indicator lights 5 is installed on the circumferential inner wall of the exit of the tunnel, and the indicator lights 5 are electrically connected to the controller. In the embodiment, the indicator lights 5 emit yellow light.

[0027] Specifically, the visibility of the fog bank accumulated at the tunnel exit is only tens of meters to several tens of meters. In the embodiment, the preset visibility value is set to 50 meters. When the visibility is lower than 50 meters, it indicates that a fog bank occurs. At this time, the sun tracker 25 is covered by the fog bank and cannot accurately track the sun. At this time, reducing the light contrast inside and outside the exit of the tunnel can play a more important role in the driving safety of the driver. Therefore, the controller adjusts the angle of the light shield plate 21 until the contrast is lower than the preset value, reduces the light contrast, and thus reduces the discomfort of the driver and improves the driving safety. Specifically, the contrast between the outdoor light intensity value and the indoor light intensity value is set to 4:1.

[0028] The specific implementation process is as follows:

[0029] When the weather outside the exit of the tunnel is not in the fog state, the sun tracker 25 can work normally, so that the controller can control the operation of the driving motor 24 according to the angle of the sun, thereby adjusting the angle of the light shield plate 21. At this time, under the action that the light shield plate 21 can reflect light to the maximum extent, the driver drives along the light shield canopy at the exit of the tunnel after driving out of the tunnel, and the line of sight is transitioned, and the driver will not feel the "white hole" effect.

[0030] When the exit of the tunnel is covered by a fog bank, the sun tracker 25 is also affected by the fog bank, and the visibility is insufficient. At this time, it is not necessary to track the angle of the sun, but only to obtain the light intensity inside and outside the exit of the tunnel. The angle of the light shield plate 21 is determined according to the contrast between the indoor and outdoor light intensity. When the contrast between the indoor and outdoor light intensity is lower than 4:1, the rotation of the light shield plate 21 can be stopped. Then the controller controls the indicator board at the exit of the tunnel to display "open the clearance light, low beam, fog light and double flash indicator light 5 in front of the fog bank", and the indicator light 5 at the exit of the tunnel flashes yellow light to prompt the driver.

[0031] The above is only the embodiment of the present application, and the common knowledge of specific structure and characteristics in the scheme is not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A road network sensing and indicating device for highways, characterized in that: The application relates to a sunshade device for tunnel exit, which comprises a sunshade installed outside the tunnel exit, an indoor light intensity sensor installed inside the tunnel exit, an outdoor light intensity sensor installed beside the sunshade, an visibility sensor, the sunshade comprises a truss, sunshades, a driving motor, a support and a sun tracker, the truss is in the shape of a Chinese character "door" and is arranged along the tunnel exit, the sunshades are sequentially arranged at the top end of the truss along the direction of the truss, the bottom wall of each sunshade is fixed with a support at both ends, the supports are connected to the output end of the driving motor, and the sunshades can be axially horizontally rotated by the driving motor; The driving motor is electrically connected with an external controller, the controller is electrically connected with the outdoor light intensity sensor, the indoor light intensity sensor, the visibility sensor and the sun tracker; The controller controls the driving motor according to the contrast between the indoor light intensity value and the outdoor light intensity value.

2. The road network sensing and indicating device for highways as claimed in claim 1 wherein: A warning board is arranged at the top end of the inner wall of the tunnel exit and is electrically connected with the controller.

3. The road network sensing and indicating device for highways as claimed in claim 2 wherein: A plurality of indicating lamps are arranged on the inner wall of the tunnel exit in a circumferential direction and are electrically connected with the controller.

4. The road network sensing and indicating device for highways as claimed in claim 3 wherein: The sunshades are color sunshades.

5. The road network sensing and indicating device for highways as claimed in claim 4 wherein: The color of each sunshade gradually fades from the sunshade close to the tunnel exit to the sunshade far from the tunnel exit.

6. The road network sensing and indicating device for highways as claimed in claim 5 wherein: The support is in the shape of an inverted triangle, and the vertex of the lower end of the support is coaxially arranged with the output end of the driving motor.

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