Self-adaptive tunnel information board device and working method thereof

Abstract

The invention discloses a self-adaptive tunnel information board device and a working method thereof, and the information board device collects environment information, road condition information and display screen brightness information in a tunnel through an illumination sensor, a visibility sensor, a video vehicle detector, a screen brightness instrument and other components. Collected data are transmitted to the data switch through the wireless connection points and the optical fiber network, the collected data are stored in the data storage server in real time, the data switch processes and analyzes the collected data, and the state and parameters of the information board device are adjusted according to the processing and analysis result. The brightness value of the corresponding point of the screen is compared with the actual screen brightness detection value, the pollution degree of the variable sign screen is obtained, the screen is processed in different forms according to different pollution degrees, the cleanliness of the screen is improved, and the intelligence board device has high adaptability.

Description

Technical Field

[0001] This invention relates to the field of tunnel equipment technology, and in particular to an adaptive tunnel information board device and its working method. Background Technology

[0002] With the rapid development of highway construction in my country, the number of tunnels on highways is also increasing rapidly. As a special structure, tunnels have played a significant role in promoting the development of my country's transportation industry. Due to their unique characteristic of "traversing mountains and valleys," there are significant environmental differences between the inside of the tunnel and the outside world, including information such as illumination, visibility, and traffic flow. Moreover, the longer the tunnel, the greater these differences become. In order to ensure that various environmental conditions, road conditions, and accident information inside the tunnel can be promptly fed back to vehicle drivers, information boards, or information board devices, are installed inside the tunnels. Through the information board devices, information inside the tunnel can be released in a timely manner, which greatly improves the safety of driving in tunnels.

[0003] Currently, there are many problems in the operation and management of tunnel variable message signs. Generally, the working state of variable message sign systems is fixed. For many long tunnels, the internal environment changes significantly, mainly in terms of visibility and illuminance values ​​within the tunnel section. When the overall environment is clear and bright, if the brightness of the variable message signs is too low, they will not easily provide a warning. When the overall environment is blurry and dim, if the brightness of the variable message signs is too high, it will cause glare pollution and create safety hazards. For tunnel sections with low traffic volume, especially at night when there are basically no vehicles passing through, the information board devices operate at high brightness continuously, which is not only a waste of energy but also an unnecessary drain on the equipment itself. For tunnels with high traffic volume, mostly trucks and coal trucks, the overall tunnel environment is harsh, and the surface of the variable message sign display screens accumulates a lot of dust, which seriously affects the brightness and display function of the variable message sign system. Summary of the Invention

[0004] To address the limitations and defects of existing technologies, this invention provides an adaptive tunnel information sign device, comprising an illuminance sensor, a visibility sensor, a video vehicle detector, a screen brightness meter, a wireless connection point, a data storage server, a data exchange, and a variable sign display system. The illuminance sensor, the visibility sensor, the video vehicle detector, and the screen brightness meter are used to collect tunnel environmental information and variable sign screen display brightness information; The wireless connection point is used to perform the function of wireless transfer of collected data; The data storage server is used to store the collected data in real time. The data switch is used to process and analyze the collected data, and to issue adjustment instructions based on the processing and analysis results; The variable sign display system is used to adaptively adjust the display content, display font, display brightness, and display color according to the adjustment instructions.

[0005] Optionally, the illuminance sensor is used to obtain the illuminance value of the tunnel, and the visibility sensor is used to obtain the visibility value of the tunnel.

[0006] Optionally, the variable sign display system is used to increase the display brightness and the display color when the visibility and illuminance values ​​of the tunnel are greater than a preset first threshold, so as to maintain the warning effect on vehicle drivers. The variable sign display system is used to reduce the display brightness and color chromaticity when the visibility and illuminance values ​​in the tunnel are less than a preset second threshold, so as to avoid glare pollution to vehicle drivers.

[0007] Optionally, the screen brightness meter is mounted on a movable pole on the side of the information board device. The screen brightness meter detects the brightness of the display screen of the variable sign display system by moving the movable pole, and obtains the brightness detection value of the display screen.

[0008] Optionally, it also includes a variable marker cleaning system, which is used to perform graded cleaning of the display screen based on the difference between the brightness value of the display screen and the brightness detection value of the display screen.

[0009] Optionally, the variable mark cleaning system is used to blow air onto the display screen when the difference is greater than a first preset value.

[0010] Optionally, the variable marker cleaning system is used to clean the display screen when the difference is greater than a second preset value.

[0011] Optionally, the variable mark cleaning system is used to spray the display screen when the difference is greater than a third preset value.

[0012] Optionally, the status of the variable sign display system includes working, standby, and off, and the video vehicle detector is used to obtain vehicle passing information; The variable sign display system is used to activate when a vehicle passes through within a preset time period. The variable sign display system is used to enter a standby state when no vehicles pass through within a preset time period.

[0013] The present invention also provides a method for operating the adaptive tunnel information sign device, the method comprising: The video vehicle detector obtains information about passing vehicles; when a vehicle passes through within a preset time period, the variable sign display system is in working mode; when no vehicle passes through within the preset time period, the variable sign display system enters standby mode. The illuminance sensor obtains the illuminance value of the tunnel, and the visibility sensor obtains the visibility value of the tunnel. When the visibility value and illuminance value of the tunnel are greater than a preset first threshold, the variable sign display system increases the display brightness and the display chromaticity to maintain the warning effect on the vehicle driver. When the visibility value and illuminance value of the tunnel are less than a preset second threshold, the variable sign display system decreases the display brightness and the display chromaticity to avoid glare pollution to the vehicle driver. The screen brightness meter detects the brightness of the display screen of the variable sign display system to obtain the brightness detection value of the display screen; the variable sign cleaning system performs graded cleaning treatment on the display screen according to the difference between the brightness value of the display screen and the brightness detection value of the display screen, and the graded cleaning treatment includes blowing, sweeping and spraying.

[0014] The present invention has the following beneficial effects: This invention provides an adaptive tunnel information sign device and its operating method. Compared with traditional information sign devices that operate in a fixed state and have simple parameter settings, this invention adds multiple data acquisition sensors. By analyzing, processing, and comprehensively evaluating the real-time acquired data, the brightness and color of the information sign device's display screen can be adjusted to improve adaptability. The device can also perform graded cleaning of the display screens with different levels of pollution to improve screen cleanliness. When no vehicles pass through certain road sections or time periods, the information sign device can enter a dormant state, reducing equipment wear and achieving energy conservation. Attached Figure Description

[0015] Figure 1 This is a layout diagram of the adaptive tunnel information board device provided in Embodiment 1 of the present invention.

[0016] Figure 2 This is a diagram showing the layout of the illuminance data detection matrix area provided in Embodiment 1 of the present invention.

[0017] Figure 3 This is a structural diagram of the variable sign display system and variable sign cleaning system provided in Embodiment 1 of the present invention.

[0018] Figure 4 This is a schematic diagram of the blowing and spraying device ports of the variable sign cleaning system provided in Embodiment 1 of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the adaptive tunnel information board device and its working method provided by the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0020] The tunnel adaptive information board device provided in this embodiment mainly consists of an illuminance sensor, a visibility sensor, a video vehicle detector, a screen brightness meter, a wireless connection point, a data storage server, a data exchange, a variable sign display system, and a variable sign cleaning system. The illuminance sensor, visibility sensor, video vehicle detector, and screen brightness meter are primarily used to collect tunnel environmental information and variable sign screen display brightness information. The wireless connection point mainly performs wireless data transfer. The data storage server is mainly used for storing real-time collected data. The data exchange mainly processes, integrates, and analyzes the collected data, and makes adjustment commands after intelligent decision-making. The variable sign display system is the core function of the entire system, with three states: working, standby, and off. By receiving adjustment commands from the data exchange, it can change the displayed content, font, and brightness. The variable sign cleaning system can receive adjustment commands from the data exchange and will activate when the screen is severely contaminated, improving the cleanliness of the variable sign display screen through different modes.

[0021] The tunnel adaptive information board device provided in this embodiment mainly consists of an illuminance sensor, a visibility sensor, a video vehicle detector, a screen brightness meter, a wireless connection point, a data storage server, a data switch, a variable sign display system, and a variable sign cleaning system. The device collects environmental and road condition information and the display brightness information of the variable sign display screen within the tunnel through sensor components such as the illuminance sensor, visibility sensor, video vehicle detector, and screen brightness meter. The data is transmitted to the data switch in the tunnel management station monitoring room via the wireless connection point and fiber optic network, and the real-time data is stored in the server. The data switch processes and analyzes the collected data, adjusts the status and parameters of the information board device according to real-time needs, and cleans devices with low screen brightness values.

[0022] Figure 1 This is a layout diagram of the adaptive tunnel information sign device provided in Embodiment 1 of the present invention. In the diagram, 1 is a video vehicle detector acquisition device, 2 is a wireless connection point for uploading vehicle inspection data, 3 is an illuminance data detection matrix area, 41 is a single road surface illuminance data acquisition device, 42 is a wall illuminance data acquisition device, 5 is a wireless connection point for uploading illuminance data, 6 is a visibility sensor acquisition device, 7 is a wireless connection point for uploading visibility data, 8 is an information sign device, which includes a variable sign display system and a variable sign cleaning system, and 9 is a wireless connection point for the information sign device.

[0023] In this embodiment, Figure 1The device in section 1 is a video vehicle detector, which mainly collects traffic flow information entering the tunnel. By collecting the data, it can determine the traffic flow data of this section of the tunnel at different times of the day and link it with the information board device. During periods with no traffic flow, it can trigger the information board device to enter a sleep state. When a vehicle passes by, it will be triggered in time to put the information board device into normal working state.

[0024] In this embodiment, Figure 1 Points 2, 5, 7, and 9 are all wireless connection points. Points 2, 5, and 7 are the wireless connection points for uploading video vehicle detector, illuminance data, and visibility data, respectively, while point 9 is the wireless receiving point for the data collected by the system.

[0025] In this embodiment, Figure 1 The middle section 3 is the illuminance data road surface detection matrix area. This area consists of 12 road surface illuminance data acquisition instruments in columns 41 and 42, and 2 wall illuminance data acquisition instruments in column 43, forming a data acquisition matrix to detect the illuminance data around the information board device and upload the collected data for analysis.

[0026] In this embodiment, Figure 1 The sixth device is a visibility data acquisition unit, which detects visibility data around the information board device and uploads the data for analysis.

[0027] In this embodiment, Figure 1 The device in section 8 is an information board, which includes a variable sign display system and a variable sign cleaning system. The variable sign display system mainly receives the evaluation conclusions after analysis and processing by the data exchange. Within an evaluation cycle, the display system can be adjusted in several ways, such as increasing brightness, decreasing brightness, entering sleep mode, or maintaining the original state. The adjustment range is determined by the evaluation results. The screen brightness meter is mainly installed in the variable sign cleaning system. It collects data at regular intervals and compares the collected brightness value Q1 with the brightness value Q2 emitted by the screen setting, i.e., M = Q1 / Q2. The variable sign cleaning system performs different cleaning modes based on the different ranges of M.

[0028] Figure 2 This is a diagram showing the layout of the illuminance data detection matrix area provided in Embodiment 1 of the present invention. 411-416 and 421-426 are road surface illuminance data acquisition devices, and 431 and 432 are wall surface illuminance data acquisition devices. The wall surface illuminance data acquisition devices are 2 meters above the road surface and connected to the road surface sensor. The road surface illuminance data acquisition devices are arranged as follows... Figure 2 As shown, the road surface width is L; three sensors are respectively arranged at 1 / 6 of the distance from the edge line, at the center line of the lane, and at 1 / 6 of the distance from the center line of the road surface, for a total of 12 road surface illuminance data acquisition devices.

[0029] Figure 3 This is a structural diagram of the variable sign display system and variable sign cleaning system provided in Embodiment 1 of the present invention. In the diagram, 1 is the variable sign display system, 2 is the wireless connection point, 3 is the cleaning device of the variable sign cleaning system, 4 is the blowing and spraying device of the variable sign cleaning system, 41 is the screen brightness acquisition device, 42 is the port of the blowing and spraying device of the variable sign cleaning system, 5 is the air and water guide belt, 6 is the connecting slip, 7 is the cleaning system control box, and L1, L2, and L3 are all slide rails of the cleaning system.

[0030] In this embodiment, Figure 3 The variable sign display system (C1) mainly receives the evaluation conclusions after analysis and processing by the data exchange. Within an evaluation cycle, the display system can be adjusted in several ways, such as increasing brightness, decreasing brightness, entering sleep mode, or maintaining the original state. The adjustment range is determined by the evaluation results.

[0031] In this embodiment, Figure 3 Point 2 is a wireless access point, which mainly receives data collected by various sensor collection points.

[0032] In this embodiment, Figure 3 The third part is the cleaning device of the variable mark cleaning system. When the screen brightness meter collects data at regular intervals, it compares and analyzes the collected brightness value data Q1 with the brightness value Q2 emitted by the screen setting, that is, M = Q1 / Q2. When the value of M is within the cleaning range, the cleaning device will clean the screen according to different cleaning levels. The cleaning device moves along the slide rails L1 and L2 from left to right, and then returns to its original position from right to left after reaching the rightmost end, which is one cleaning cycle. Different cleaning levels correspond to different cleaning cycle numbers.

[0033] In this embodiment, Figure 3 4 is the variable sign cleaning system's blowing and spraying device, 42 is the blowing and spraying device port, and 41 is the screen brightness acquisition device. When the screen brightness acquisition device collects data at regular intervals, it compares and analyzes the collected brightness value data Q1 with the brightness value Q2 emitted by the screen setting, i.e., M = Q1 / Q2. When the value of M is within the blowing and spraying range, the blowing and spraying device will blow and clean the screen according to different blowing and spraying levels. The device moves along the slide rails L1 and L3 from right to left, to the leftmost end, and then back to the original position from left to right, which is one blowing and spraying cycle. Different blowing and spraying levels correspond to different numbers of blowing and spraying cycles.

[0034] In this embodiment, Figure 3 5 is the air and water guide belt, and 6 is the connecting slip buckle. During the movement of the spraying and rinsing device, it provides continuous air pressure and water flow to the port of the spraying and rinsing device. One end of it is connected to the spraying and rinsing device, and the other end is connected to the cleaning system control box.

[0035] In this embodiment, Figure 3 Item 7 is the cleaning system control box, which includes a pneumatic control system and a water pressure control system. The pneumatic control system provides air pressure for the spraying function; the water pressure control system includes a water pressure controller that provides water pressure to the spraying device and a water tank that provides a continuous water supply.

[0036] In this embodiment, Figure 3 L1, L2, and L3 are all sliding rails of the cleaning system, providing sliding tracks for the sweeping device and the blowing and spraying device.

[0037] Figure 4 This is a schematic diagram of the blowing and spraying device ports of the variable sign cleaning system provided in Embodiment 1 of the present invention. In the diagram, 1 represents the blowing and spraying device of the variable sign cleaning system, 2 represents one of the spraying ports, 3 represents the blowing end of the spraying port, 4 represents the blowing air inlet, 5 represents the spraying end of the spraying port, and 6 represents the spraying water inlet.

[0038] In this embodiment, Figure 4 Port 2 is one of the spray ports. The variable mark cleaning system has a total of 21 ports for blowing and spraying.

[0039] In this embodiment, Figure 4 In the middle 3 is the spray port. When the screen brightness meter collects data at regular intervals, it compares and analyzes the collected brightness value data Q1 with the brightness value Q2 emitted by the screen setting, that is, M = Q1 / Q2. When the value of M is in the spray range, the pneumatic control system will be triggered to blow air from the spray ports at different pressures.

[0040] In this embodiment, Figure 4 The fourth port is the air inlet for jetting, which is connected to the pneumatic control system and provides air pressure to the jetting ends of the 21 jetting ports.

[0041] In this embodiment, Figure 4 5 is the spray port. When the screen brightness meter collects data at regular intervals, it compares and analyzes the collected brightness value data Q1 with the brightness value Q2 emitted by the screen setting, i.e., M = Q1 / Q2. When the value of M is within the spray range, the water pressure controller will be triggered to draw water from the water tank and then spray water from the spray ports of different spray ports at different water pressures.

[0042] In this embodiment, Figure 4 The middle 6 is the spray inlet, which is connected to the water pressure controller and water tank, providing continuous water pressure and water source for the 21 spray ports.

[0043] This embodiment provides an adaptive tunnel information sign device. By utilizing multiple sensors such as illuminance, visibility, vehicle detectors, and screen brightness to collect data in real time, the device stores, processes, and analyzes the data, and adjusts the working status and performance parameters of the information sign device accordingly, making it more applicable, efficient, and energy-saving. Example 2

[0044] This embodiment provides a method for operating an adaptive tunnel information sign device. It involves different data acquisition sensors. The acquired data is transferred in real-time via a wireless connection point, then transmitted through a fiber optic digital transmission system to a data exchange for processing and analysis. Based on the analysis results, the information sign device is adjusted accordingly. The information sign device operates normally when vehicles pass by the video vehicle detector. If no vehicles pass by in several consecutive acquisition cycles, the information sign device will enter a sleep state. When the video vehicle detector detects a vehicle passing by, it will activate the information board device and put it into operation. The data collected by the illuminance sensor matrix and visibility meter are processed and analyzed to assess the visibility and brightness of the tunnel environment. Based on the assessment results, the brightness and color information of the information board device's display screen are adaptively adjusted to avoid unclear display due to insufficient brightness and glare pollution due to excessive brightness. The screen brightness meter is installed on a movable pole on the side of the information board device. By moving it, the brightness of the entire variable sign screen can be detected. By comparing the brightness value emitted by the system at the corresponding point on the screen with the actual screen brightness detection value, the degree of pollution of the variable sign screen can be indirectly reflected. Depending on the degree of pollution, the screen can be treated in different ways, such as blowing, sweeping, or spraying, to improve the cleanliness of the screen.

[0045] This embodiment uses multiple sensors, such as illuminance sensors, visibility sensors, video vehicle detectors, and screen brightness meters, to collect information and perform real-time evaluation and analysis of the working environment of variable information signs. It then makes targeted adjustments to the working status and performance parameters of the information board device, resulting in higher environmental adaptability and greater energy efficiency for the entire system.

[0046] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An adaptive tunnel information sign device, characterized in that, This includes illuminance sensors, visibility sensors, video vehicle detectors, screen brightness meters, wireless connection points, data storage servers, data switches, and variable sign display systems. The illuminance sensor, the visibility sensor, the video vehicle detector, and the screen brightness meter are used to collect tunnel environmental information and variable sign screen display brightness information; The wireless connection point is used to perform the function of wireless transfer of collected data; The data storage server is used to store the collected data in real time. The data switch is used to process and analyze the collected data, and to issue adjustment instructions based on the processing and analysis results; The variable sign display system is used to adaptively adjust the display content, display font, display brightness, and display color according to the adjustment instructions.

2. The adaptive tunnel information sign device according to claim 1, characterized in that, The illuminance sensor is used to obtain the illuminance value of the tunnel, and the visibility sensor is used to obtain the visibility value of the tunnel.

3. The adaptive tunnel information board device according to claim 2, characterized in that, The variable sign display system is used to increase the display brightness and color temperature when the visibility and illuminance values ​​in the tunnel are greater than a preset first threshold, so as to maintain the warning effect on vehicle drivers. The variable sign display system is used to reduce the display brightness and color chromaticity when the visibility and illuminance values ​​in the tunnel are less than a preset second threshold, so as to avoid glare pollution to vehicle drivers.

4. The adaptive tunnel information board device according to claim 3, characterized in that, The screen brightness meter is mounted on a movable pole on the side of the information board device. The screen brightness meter detects the brightness of the display screen of the variable sign display system by moving the movable pole, and obtains the brightness detection value of the display screen.

5. The adaptive tunnel information board device according to claim 4, characterized in that, It also includes a variable marker cleaning system, which is used to perform graded cleaning of the display screen based on the difference between the brightness value of the display screen and the brightness detection value of the display screen.

6. The adaptive tunnel information board device according to claim 5, characterized in that, The variable mark cleaning system is used to blow air onto the display screen when the difference is greater than a first preset value.

7. The adaptive tunnel information board device according to claim 6, characterized in that, The variable marker cleaning system is used to clean the display screen when the difference is greater than a second preset value.

8. The adaptive tunnel information board device according to claim 7, characterized in that, The variable sign cleaning system is used to spray the display screen when the difference is greater than a third preset value.

9. The adaptive tunnel information board device according to claim 8, characterized in that, The status of the variable sign display system includes working, standby, and off, and the video vehicle detector is used to obtain information about passing vehicles; The variable sign display system is used to activate when a vehicle passes through within a preset time period. The variable sign display system is used to enter a standby state when no vehicles pass through within a preset time period.

10. A method of operating the adaptive tunnel information sign device according to any one of claims 1-9, characterized in that, The working method includes: The video vehicle detector obtains information about passing vehicles; when a vehicle passes through within a preset time period, the variable sign display system is in working mode; when no vehicle passes through within the preset time period, the variable sign display system enters standby mode. The illuminance sensor obtains the illuminance value of the tunnel, and the visibility sensor obtains the visibility value of the tunnel. When the visibility value and illuminance value of the tunnel are greater than a preset first threshold, the variable sign display system increases the display brightness and the display chromaticity to maintain the warning effect on the vehicle driver. When the visibility value and illuminance value of the tunnel are less than a preset second threshold, the variable sign display system decreases the display brightness and the display chromaticity to avoid glare pollution to the vehicle driver. The screen brightness meter detects the brightness of the display screen of the variable sign display system to obtain the brightness detection value of the display screen; the variable sign cleaning system performs graded cleaning treatment on the display screen according to the difference between the brightness value of the display screen and the brightness detection value of the display screen, and the graded cleaning treatment includes blowing, sweeping and spraying.

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