A tunnel hole external brightness detection device based on image segmentation

Abstract

The application belongs to the technical field of tunnel hole outside brightness detection, in particular to a tunnel hole outside brightness detection device based on image segmentation, which comprises a detection box, an image acquisition assembly is fixedly connected to one side of the detection box, a processing controller is fixedly connected to the middle of the detection box, an image segmentation module and a brightness calculation module are arranged in the processing controller, a communication output module is electrically connected to one side of the processing controller, a storage module is electrically connected to the other side of the processing controller, and a mounting bracket is fixedly connected to the outside of the detection box. Through the image acquisition assembly, the processing controller, the image segmentation module, the brightness calculation module, the communication output module and the storage module, the tunnel hole outside image acquisition, effective brightness area segmentation and hole outside brightness calculation output are realized, the influence of local shielding and environmental interference on the detection result is reduced, the hole outside brightness detection stability is improved, and the tunnel lighting linkage control effect is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of tunnel exterior brightness detection technology, specifically a tunnel exterior brightness detection device based on image segmentation. Background Technology

[0002] Tunnels are transportation, municipal, or water conservancy engineering passages that pass through mountains, underground, underwater, or beneath urban buildings and structures. They are widely used in highways, railways, subways, utility tunnels, water diversion, drainage, and mining transportation. Tunnel construction typically requires the use of methods such as drill-and-blast, shield tunneling, open-cut, mining, or pipe jacking, depending on geological conditions, surrounding rock stability, burial depth, groundwater conditions, and intended use. These methods are accompanied by the construction of supporting systems including initial support, waterproofing and drainage, secondary lining, ventilation, lighting, monitoring, and fire protection to ensure the tunnel's structural stability and operational safety.

[0003] Because the interior space of a tunnel is relatively enclosed, vehicles or personnel entering the tunnel from outside will be affected by the difference in brightness between the inside and outside. Especially during the day when the outside brightness is high and the inside brightness is low, visual adaptation difficulties are very likely to occur. Therefore, during the construction and operation of tunnels, it is usually necessary to reasonably set up lighting, brightness detection, ventilation and smoke extraction and safety monitoring facilities at the tunnel entrance to improve the safety of tunnel passage, the comfort of use and the reliability of later operation and maintenance.

[0004] In existing technologies, brightness detection outside tunnels usually relies on luminance meters, light sensors, or fixed-point sampling equipment. However, the external environment of tunnel entrances is complex, and the detection points are easily affected by vehicle obstruction, local shadows, tree obstruction, sign reflections, or sensor installation angle deviations. As a result, the measured brightness values ​​can only reflect the illumination status of local locations and are difficult to stably represent the overall visual brightness environment outside the tunnel.

[0005] Therefore, the present invention provides a tunnel exterior brightness detection device based on image segmentation. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a tunnel exterior brightness detection device based on image segmentation, comprising a detection box; an image acquisition component is fixedly connected to one side of the detection box, a processing controller is fixedly connected to the middle of the detection box, the processing controller is provided with an image segmentation module and a brightness calculation module, a communication output module is electrically connected to one side of the processing controller, a storage module is electrically connected to the other side of the processing controller, and a mounting bracket is fixedly connected to the outside of the detection box.

[0008] Preferably, the image acquisition component is provided with a protective cover on its outer side, the protective cover is fixedly connected to the detection box, and a transparent protective plate is fixedly connected to one side of the protective cover.

[0009] Preferably, a rodless cylinder is fixedly connected to the top of the protective cover, a connecting rod is fixedly connected to one side of the rodless cylinder, a cleaning rod is fixedly connected to one end of the connecting rod, a cleaning brush is fixedly connected to one side of the cleaning rod, and the cleaning brush is in corresponding contact with the transparent protective plate.

[0010] Preferably, an air duct is fixedly connected to the inner side of the protective cover. One end of the air duct is connected to a miniature air pump, and the other end of the air duct is connected to a jet pipe. The jet pipe is correspondingly arranged with the transparent protective plate.

[0011] Preferably, the bottom of the protective cover is provided with a plurality of drainage grooves, which are formed on the surface of the protective cover.

[0012] Preferably, the outer side of the transparent protective plate is provided with a sealing strip, and the sealing strip is fixedly connected to the protective cover.

[0013] The beneficial effects of this invention are as follows: 1. The tunnel exterior brightness detection device based on image segmentation described in this invention, by setting up an image acquisition component, a processing controller, an image segmentation module, a brightness calculation module, a communication output module, and a storage module, realizes the acquisition of tunnel exterior images, effective brightness region segmentation, and exterior brightness calculation output, thereby reducing the impact of local occlusion and environmental interference on the detection results, improving the stability of exterior brightness detection, and facilitating the linkage control of tunnel lighting.

[0014] 2. The tunnel external brightness detection device based on image segmentation described in this invention achieves external occlusion protection of the image acquisition component and isolation of the acquisition window by setting a protective cover and a transparent protective plate, thereby reducing the impact of rain and dust impurities, improving the stability of image acquisition, and ensuring the continuity of brightness detection. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the detection box in this invention; Figure 3 This is a schematic diagram of the structure of the protective cover in this invention; Figure 4 This is a schematic diagram of the cleaning rod in this invention; Figure 5 This is a schematic diagram of the air duct structure in this invention; In the diagram: 1. Detection box; 11. Image acquisition component; 12. Processing controller; 13. Image segmentation module; 14. Brightness calculation module; 15. Communication output module; 16. Storage module; 17. Mounting bracket; 2. Protective cover; 21. Transparent protective plate; 3. Rodless cylinder; 31. Connecting rod; 32. Cleaning rod; 33. Cleaning brush; 4. Air guide tube; 41. Miniature air pump; 42. Air jet pipe; 5. Drainage trough; 6. Sealing strip. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] like Figures 1 to 2 As shown in the embodiment of the present invention, a tunnel exterior brightness detection device based on image segmentation includes a detection box 1. An image acquisition component 11 is fixedly connected to one side of the detection box 1, and a processing controller 12 is fixedly connected to the middle of the detection box 1. The processing controller 12 contains an image segmentation module 13 and a brightness calculation module 14. A communication output module 15 is electrically connected to one side of the processing controller 12, and a storage module 16 is electrically connected to the other side. A mounting bracket 17 is fixedly connected to the outside of the detection box 1. During operation, the detection box 1 is installed outside the tunnel entrance via the mounting bracket 17, with the image acquisition component 11 facing the tunnel exterior brightness detection area. The image acquisition component 11 acquires images of the tunnel exterior environment and transmits the acquired image data to the processing controller 12. The processing controller 12 calls the preset detection area parameters and image processing parameters stored in the storage module 16, and then uses the image... The segmentation module 13 performs region segmentation on the external environment image, separating the sky area, road surface area, tunnel entrance background area, or preset effective detection area, and reducing the impact of vehicles, trees, shadows, signs, and strong reflective areas on the brightness detection results. The brightness calculation module 14 calculates the brightness of the effective detection area obtained by the image segmentation module 13 to obtain the brightness value outside the tunnel. Subsequently, the communication output module 15 transmits the brightness value to the tunnel lighting control system, enabling the tunnel lighting control system to adjust the lighting status of the entrance section according to the changes in external brightness. By setting up the image acquisition component 11, processing controller 12, image segmentation module 13, brightness calculation module 14, communication output module 15, and storage module 16, the system realizes the acquisition of external tunnel images, effective brightness region segmentation, and external brightness calculation output, thereby reducing the impact of local occlusion and environmental interference on the detection results, improving the stability of external brightness detection, and facilitating the linkage control of tunnel lighting.

[0019] like Figures 1 to 3As shown, a protective cover 2 is provided on the outside of the image acquisition component 11. The protective cover 2 is fixedly connected to the detection box 1. A transparent protective plate 21 is fixedly connected to one side of the protective cover 2. During operation, the image acquisition component 11 acquires images of the environment outside the tunnel through the transparent protective plate 21. The transparent protective plate 21 is located outside the image acquisition component 11, forming a shielding protection for the front end of the image acquisition component 11, reducing the direct contact of rainwater, dust, mud, flying insects, and splashing impurities with the image acquisition component 11. The protective cover 2 is fixed to one side of the detection box 1, so that the image acquisition component 11 is in a relatively closed protective space, reducing the impact of the complex environment outside the tunnel on the acquisition window and internal electrical components. The transparent protective plate 21 can be made of a transparent material with good light transmittance and weather resistance, so that the image acquisition component 11 can still acquire images outside the tunnel while being protected externally. By setting the protective cover 2 and the transparent protective plate 21, the external shielding protection of the image acquisition component 11 and the isolation of the acquisition window are achieved, thereby reducing the impact of rain and dust impurities, improving the stability of image acquisition, and ensuring the continuity of brightness detection.

[0020] like Figures 3 to 4 As shown, a rodless cylinder 3 is fixedly connected to the top of the protective cover 2. A connecting rod 31 is fixedly connected to one side of the rodless cylinder 3. A cleaning rod 32 is fixedly connected to one end of the connecting rod 31. A cleaning brush 33 is fixedly connected to one side of the cleaning rod 32. The cleaning brush 33 is in corresponding contact with the transparent protective plate 21. During operation, when dust, mud, watermarks, or insect residue adhere to the surface of the transparent protective plate 21, the rodless cylinder 3 drives the connecting rod 31 to move along the length of the transparent protective plate 21. The connecting rod 31 drives the cleaning rod 32 to move synchronously. The cleaning rod 32 drives the cleaning brush 33 to wipe the surface of the transparent protective plate 21, so that the adhering substances on the outer surface of the transparent protective plate 21 are cleaned. The cleaning brush 33 can be made of flexible and wear-resistant material to reduce hard scratches when in contact with the transparent protective plate 21, while removing surface dust and watermarks, reducing the impact of dirt on the transparent protective plate 21 on the effective detection area of ​​the image segmentation module 13.

[0021] like Figures 3 to 5As shown, an air duct 4 is fixedly connected to the inner side of the protective cover 2. One end of the air duct 4 is connected to a micro air pump 41, and the other end of the air duct 4 is connected to a jet pipe 42. The jet pipe 42 is correspondingly arranged with the transparent protective plate 21. During operation, the micro air pump 41 sends airflow into the air duct 4. After the airflow enters the jet pipe 42 through the air duct 4, it is sprayed onto the surface of the transparent protective plate 21 to blow away the floating dust, fine particles, and water mist on the surface of the transparent protective plate 21. The jet pipe 42 can be arranged along the acquisition window direction of the transparent protective plate 21 so that the airflow covers the main acquisition area of ​​the image acquisition component 11. The transparent protective plate 21 is cleaned in an auxiliary manner before and after wiping with the cleaning brush 33, reducing the situation where dust and water mist adhere for a long time, causing image blurring, inaccurate region segmentation, or brightness calculation deviation.

[0022] like Figure 3 As shown, the bottom of the protective cover 2 is provided with multiple drainage channels 5. The drainage channels 5 are opened on the surface of the protective cover 2. During operation, rainwater, water formed by wiping with the cleaning brush 33, and water adhering to the cover blown off by the air jet pipe 42 flow downwards along the transparent protective plate 21 and the inner wall of the protective cover 2, and enter the interior of the drainage channels 5. The drainage channels 5 discharge the water to the bottom or outside of the protective cover 2, reducing the accumulation of water under the transparent protective plate 21. When the device is installed in an open or semi-open environment outside the tunnel, the drainage channels 5 can reduce the impact of rainwater retention on the light transmission of the transparent protective plate 21 and the internal environment of the protective cover 2, so that the image acquisition component 11 can maintain relatively stable acquisition conditions.

[0023] like Figure 3 As shown, a sealing strip 6 is provided on the outer side of the transparent protective plate 21. The sealing strip 6 is fixedly connected to the protective cover 2. During operation, after the transparent protective plate 21 is installed on one side of the protective cover 2, the sealing strip 6 is located at the connection edge between the transparent protective plate 21 and the protective cover 2, sealing the gap between the two and reducing the possibility of rainwater, dust and moisture entering the interior of the protective cover 2 from the edge of the transparent protective plate 21. The sealing strip 6 can be made of weather-resistant, aging-resistant and elastic rubber or silicone material, so that the transparent protective plate 21 can still maintain a good fit when subjected to temperature difference, rain and vibration for a long time, improving the stability of the image acquisition component 11 and the air jet cleaning structure inside the protective cover 2.

[0024] Working principle: The detection box 1 is installed outside the tunnel entrance via the mounting bracket 17, with the image acquisition component 11 facing the brightness detection area outside the tunnel. The image acquisition component 11 acquires images of the environment outside the tunnel and transmits the acquired image data to the processing controller 12. The processing controller 12 calls the preset detection area parameters and image processing parameters in the storage module 16, and performs region segmentation on the environment image outside the tunnel through the image segmentation module 13, separating the sky area, road surface area, tunnel entrance background area, or preset effective detection area, and reducing the influence of vehicles, trees, shadows, signs, and strong reflective areas on the brightness detection results; luminance meter The calculation module 14 performs brightness calculation on the effective detection area obtained by the image segmentation module 13 to obtain the brightness value outside the tunnel. Then, the communication output module 15 transmits the brightness value to the tunnel lighting control system, enabling the system to adjust the lighting status of the entrance section according to changes in the external brightness. By setting up the image acquisition component 11, processing controller 12, image segmentation module 13, brightness calculation module 14, communication output module 15, and storage module 16, the system achieves external tunnel image acquisition, effective brightness area segmentation, and external brightness calculation output. This reduces the impact of local occlusion and environmental interference on the detection results, improves the stability of external brightness detection, and facilitates... To improve the effectiveness of tunnel lighting linkage control, the image acquisition component 11 acquires images of the external environment of the tunnel through a transparent protective plate 21. The transparent protective plate 21 is located outside the image acquisition component 11, shielding the front end of the component and reducing direct contact between rainwater, dust, mud, flying insects, and splashing impurities. The protective cover 2 is fixed to one side of the detection box 1, placing the image acquisition component 11 within a relatively enclosed protective space, reducing the impact of the complex external environment of the tunnel on the acquisition window and internal electrical components. The transparent protective plate 21 can be made of a transparent material with good light transmittance and weather resistance, protecting the image acquisition component 11 from direct contact with the external environment. While being protected by the outside, it can still collect images outside the cave; by setting up a protective cover 2 and a transparent protective plate 21, the external shielding protection of the image acquisition component 11 and the isolation of the acquisition window are realized, which can reduce the impact of rain and dust impurities, improve the stability of image acquisition and ensure the continuity of brightness detection. When dust, mud, water marks or insect residues are attached to the surface of the transparent protective plate 21, the rodless cylinder 3 drives the connecting rod 31 to move along the length of the transparent protective plate 21. The connecting rod 31 drives the cleaning rod 32 to move synchronously. The cleaning rod 32 drives the cleaning brush 33 to wipe the surface of the transparent protective plate 21, so that the attachments on the outer surface of the transparent protective plate 21 are cleaned.The cleaning brush 33 can be made of a flexible and wear-resistant material to reduce hard scratches when in contact with the transparent protective plate 21, while removing surface dust and water marks, reducing the impact of dirt on the transparent protective plate 21 on the effective detection area recognition of the image segmentation module 13. The micro air pump 41 sends airflow into the air guide tube 4, and the airflow enters the jet pipe 42 after passing through the air guide tube 4 and is sprayed onto the surface of the transparent protective plate 21 to blow away floating dust, fine particles and water mist on the surface of the transparent protective plate 21. The jet pipe 42 can be set along the acquisition window direction of the transparent protective plate 21 so that the airflow covers the main acquisition area of ​​the image acquisition component 11, and performs auxiliary cleaning of the transparent protective plate 21 before and after wiping with the cleaning brush 33, reducing the situation where long-term adhesion of dust and water mist leads to image blurring, inaccurate region segmentation or brightness calculation deviation. Rainwater, water formed by wiping with the cleaning brush 33 and the attached water blown off by the jet pipe 42 flow downward along the inner wall of the transparent protective plate 21 and the protective cover 2 and enter Inside the drainage trough 5, water is directed to the bottom or outside of the protective cover 2, reducing water accumulation under the transparent protective plate 21. When the device is installed in an open or semi-open environment outside the tunnel, the drainage trough 5 reduces the impact of rainwater retention on the light transmission of the transparent protective plate 21 and the internal environment of the protective cover 2, ensuring stable acquisition conditions for the image acquisition component 11. After the transparent protective plate 21 is installed on one side of the protective cover 2, the sealing strip 6 is located at the connection edge between the transparent protective plate 21 and the protective cover 2, sealing the gap between them and reducing the entry of rainwater, dust, and moisture into the interior of the protective cover 2 from the edge of the transparent protective plate 21. The sealing strip 6 can be made of weather-resistant, aging-resistant, and elastic rubber or silicone material, ensuring that the transparent protective plate 21 maintains a good fit even under long-term exposure to temperature differences, rainwater, and vibration, improving the operational stability of the image acquisition component 11 and the air jet cleaning structure inside the protective cover 2.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel exterior brightness detection device based on image segmentation, comprising a detection box (1); characterized in that: An image acquisition component (11) is fixedly connected to one side of the detection box (1), and a processing controller (12) is fixedly connected to the middle of the detection box (1). The processing controller (12) is equipped with an image segmentation module (13) and a brightness calculation module (14). A communication output module (15) is electrically connected to one side of the processing controller (12), and a storage module (16) is electrically connected to the other side of the processing controller (12). A mounting bracket (17) is fixedly connected to the outside of the detection box (1).

2. The tunnel exterior brightness detection device based on image segmentation according to claim 1, characterized in that: The image acquisition component (11) is provided with a protective cover (2) on the outside. The protective cover (2) is fixedly connected to the detection box (1). A transparent protective plate (21) is fixedly connected to one side of the protective cover (2).

3. The tunnel exterior brightness detection device based on image segmentation according to claim 2, characterized in that: The top of the protective cover (2) is fixedly connected to a rodless cylinder (3), and a connecting rod (31) is fixedly connected to one side of the rodless cylinder (3). A cleaning rod (32) is fixedly connected to one end of the connecting rod (31), and a cleaning brush (33) is fixedly connected to one side of the cleaning rod (32). The cleaning brush (33) is in corresponding contact with the transparent protective plate (21).

4. The tunnel exterior brightness detection device based on image segmentation according to claim 2, characterized in that: An air duct (4) is fixedly connected to the inside of the protective cover (2). One end of the air duct (4) is connected to a micro air pump (41), and the other end of the air duct (4) is connected to a jet pipe (42). The jet pipe (42) is correspondingly set with the transparent protective plate (21).

5. A tunnel exterior brightness detection device based on image segmentation according to claim 4, characterized in that: The bottom of the protective cover (2) is provided with multiple drainage grooves (5), which are formed on the surface of the protective cover (2).

6. The tunnel exterior brightness detection device based on image segmentation according to claim 5, characterized in that: The transparent protective plate (21) is provided with a sealing strip (6) on the outside, and the sealing strip (6) is fixedly connected to the protective cover (2).

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