Tunnel lighting system and control method thereof
By introducing automated light intensity detection and cleaning mechanisms into the tunnel lighting system, the problem of deterioration of lighting effects caused by dust coverage is solved, and the automated control and stability of the lighting system are improved.
Patent Information
- Application Number
- CN202411600678.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-02-14
AI Technical Summary
Existing tunnel lighting devices are easily covered by dust under harsh working conditions, resulting in poor lighting effects, and manual dust removal will affect traffic flow and cannot maintain stable lighting brightness.
An automated tunnel lighting system is designed, including a light intensity acquisition module, rotating fan blades and jet heads. By automatically detecting the light intensity and cleaning the light heads, automatic control and stability of the light intensity is achieved.
It realizes fully automatic light intensity detection and lamp head cleaning, improves the degree of automation and stability of the lighting system, and avoids traffic congestion and resource waste caused by manual dust removal.
Smart Images
Figure CN119436072A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an automatic lighting device, in particular to a tunnel lighting system and a control method thereof. Background Art
[0002] In various tunnels, lighting equipment needs to be installed for driving and transportation safety. Under some harsh working conditions, the lighting device is easily covered with dust, resulting in poor lighting effect. To address this problem, manual dust removal is usually performed regularly, but lighting equipment is generally installed at high places, and manual dust removal will affect the normal traffic flow in the tunnel for a long time. Moreover, relying solely on manual dust removal will cause the lighting brightness to change too much before and after dust removal, and the lighting brightness cannot remain stable after dust removal. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a tunnel lighting system and a control method thereof, which can solve the deficiencies of the prior art, facilitate the control of light intensity, and avoid traffic congestion and waste of human resources caused by manual work.
[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.
[0005] A tunnel lighting system comprises a lamp body, a lamp holder is arranged at the front end of the lamp body, a light intensity collection module is arranged at the upper part of the lamp body, a support rod is connected to the upper part of the lamp body, the support rod is connected to a fan blade bracket through a rotating motor, a free end of the fan blade bracket is connected to a water supply straight pipe, a locking plate is integrally arranged at the end of the fan blade bracket, a limit baffle is arranged at the inner end of the water supply straight pipe, the locking plate is slidably connected to the limit baffle, a sealing block is sleeved at the junction of the water supply straight pipe and the fan blade bracket, a water supply hose is arranged on the fan blade bracket, a plurality of rotating fan blades are axially connected to the free end of the water supply straight pipe, the rotating fan blades rotate around the installation axis under the action of the airflow generated by the tunnel axial flow fan, a sprinkler head is arranged on the side of the rotating fan blade facing the lamp holder, the interior of the rotating fan blade is hollow, forming a channel for water flow.
[0006] Preferably, the lamp head is symmetrically provided with nozzles above and below, the nozzles include a bend, a convex portion is provided on the bend toward the irradiation direction of the lamp head, the internal cavities of the bend and the convex portion are hollow, and the hollow channel is connected to an air pressure tube.
[0007] Preferably, the inner side surface of the curved portion is provided with a plurality of curved portion air holes, and the inner side surface of the convex portion is provided with a plurality of convex portion air holes.
[0008] Preferably, the sprinkler head is provided with an inner sprinkler tube inside, a filter is provided at the front end of the inner sprinkler tube, a main nozzle is fixedly connected to the outside of the filter, the main nozzle is symmetrically provided with guide plates above and below, a spike portion extending outward is provided on the top of the guide plate, a guide groove is provided on the outside of the guide plate, the guide groove is located below the spike portion, auxiliary nozzles are symmetrically provided on the outside of the guide plate, an inclined portion is provided on the outside of the auxiliary nozzle, and an auxiliary water spray hole is provided on the auxiliary nozzle in the direction toward the main nozzle, and the spraying direction of the auxiliary water spray hole and the main nozzle are perpendicular to each other.
[0009] A control method for the above-mentioned tunnel lighting system comprises the following steps: A. The light intensity acquisition module acquires the current light intensity two-dimensional image; B. Analyze the two-dimensional image of light intensity to distinguish the dust-occluded area and the non-dust-occluded area; C. Determine the illumination brightness of the lamp head according to the average light intensity in the non-dust-blocked area; D. When the comprehensive light transmittance of the dust-blocked area is less than the set threshold, clean the lamp head.
[0010] Preferably, the process of distinguishing the dust-blocked area from the non-dust-blocked area is as follows: The current two-dimensional image of light intensity is compared with the two-dimensional image of historical light intensity. When the average light brightness reduction of a closed area exceeds a set threshold and the area of the closed area exceeds the set preset situation, the closed area is marked; the boundary of the marked closed area is traversed using a dynamic sliding window, and during the traversal process, the length, width and angle of the dynamic sliding window are adjusted to ensure that there is at least one extreme point of dynamic change of light intensity in the length and width directions of the dynamic sliding window, and the light intensity of the extreme point of dynamic change of light intensity in each dynamic sliding window and the change direction of the extreme point of dynamic change of light intensity are used to form a feature vector, and two adjacent feature vectors are used to fit the edge light intensity distribution map between the two adjacent feature vectors, and all edge light intensity distribution maps are combined and smoothed to obtain an edge light intensity total map, and the dust-blocked area is identified using the edge light intensity total map. After the dust-blocked area is identified, the remaining area is the non-dust-blocked area.
[0011] Preferably, the fitting method of the edge illumination intensity distribution diagram is: The brightness of each pixel in the edge illumination intensity distribution map is the weighted average of the illumination intensities in the two feature vectors, and the weighted value is inversely proportional to the Euclidean distance from the pixel to the corresponding feature vector.
[0012] Preferably, using the edge illumination intensity total map to identify the dust-blocked area comprises the following steps: The brightness standard deviation of the total edge illumination intensity map is calculated. If the brightness standard deviation is greater than the set threshold, it is determined to be a dust-occluded area.
[0013] Preferably, the calculation method of the comprehensive light transmittance of the dust-blocked area is: The average brightness of the dust-occluded area is calculated, and pixels with brightness lower than the average brightness are defined as occluded pixels. The ratio of occluded pixels to the total pixels in the dust-occluded area is calculated as the comprehensive light transmittance of the dust-occluded area.
[0014] The beneficial effect brought by adopting the above technical solution is that the present invention realizes automatic measurement of light intensity and automatic cleaning of lamp heads by designing a fully automatic light intensity detection mechanism and a lamp head cleaning mechanism. At the same time, targeted optimization is carried out for the problem of low accuracy of light intensity detection due to dust in the prior art and poor automatic cleaning effect of lamp heads, thereby improving the convenience of use of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an overall structural diagram of a specific implementation method of the present invention.
[0016] Figure 2 It is a detailed view of a sprinkler head in a specific embodiment of the present invention.
[0017] Figure 3 It is a structural diagram of a lamp body in a specific embodiment of the present invention.
[0018] Figure 4 It is a structural diagram of a straight water supply pipe in a specific implementation manner of the present invention.
[0019] In the figure: 1. rotating fan blades; 2. fan blade bracket; 3. light intensity acquisition module; 4. lamp body; 5. sprinkler inner tube; 6. lamp holder; 7. nozzle; 8. sprinkler head; 9. sealing block; 10. water supply straight pipe; 11. auxiliary nozzle; 12. guide plate; 13. guide groove; 14. main nozzle; 15. filter; 16. convex part; 17. bent part; 18. spike part; 19. air pressure tube; 20. convex part air hole; 21. bent part air hole; 22. auxiliary water spray hole; 23. support rod; 24. limit baffle; 25. rotating motor; 26. locking plate; 27. inclined part; 28. water supply hose. DETAILED DESCRIPTION
[0020] Reference Figure 1-4A specific embodiment of the present invention includes a lamp body 4, a lamp holder 6 is arranged at the front end of the lamp body 4, and is characterized in that a light intensity collection module 3 is arranged on the upper part of the lamp body 4, a support rod 23 is connected to the upper part of the lamp body 4, and the support rod 23 is connected to the fan blade bracket 2 through a rotating motor 26, and the free end of the fan blade bracket 2 is connected to a water supply straight pipe 10, and a locking plate 26 is integrally arranged at the end of the fan blade bracket 2, and a limit baffle 24 is arranged at the inner end of the water supply straight pipe 10, and the locking plate 26 is slidably connected to the limit baffle 24, and a sealing block 9 is sleeved at the connection between the water supply straight pipe 10 and the fan blade bracket 2, and a water supply hose 28 is arranged on the fan blade bracket 2, and a plurality of rotating blades 1 are axially connected to the free end of the water supply straight pipe 10, and the rotating blades 1 rotate around the installation axis under the action of the airflow generated by the tunnel axial flow fan, and a sprinkler head 8 is arranged on the side of the rotating fan blades 1 facing the lamp holder 6, and the rotating fan blades 1 are hollow inside to form a channel for passing water flow. The sprinkler head 8 is provided with a sprinkler inner tube 5 inside, a filter 15 is provided at the front end of the sprinkler inner tube 5, a main nozzle 14 is fixedly connected to the outside of the filter 15, the main nozzle 14 is symmetrically provided with a guide plate 12 above and below, a spike portion 18 extending outward is provided at the top of the guide plate 12, a guide groove 13 is provided at the outside of the guide plate, and the guide groove 13 is located below the spike portion 18, and a secondary nozzle 11 is symmetrically provided at the outside of the guide plate 12, and a bevel portion 27 is provided at the outside of the secondary nozzle 11, and a secondary water spray hole 22 is provided at the direction of the secondary nozzle 11 toward the main nozzle 14, and the secondary water spray hole 22 and the spray direction of the main nozzle 14 are perpendicular to each other. The rotating fan blade 1 can take away larger obstructions such as spider webs and plastic bags. At the same time, when water flows from the sprinkler inner tube 5 to the main nozzle 14 after passing through the filter 15, the spike portion 18 at the top of the guide plate 12 will cause the first interference to the water flow, causing the originally relatively regular water flow to break and disperse when passing through. This causes the water flow to form local small-scale turbulence in the initial stage. The guide groove 13 guides the direction of the water flow and enhances the turbulence. After the spikes 18 disperse the water flow, the guide groove 13 begins to play a role. The existence of the guide groove 13 allows the water flow to flow along its specific path. When the water flow flows in it, it will produce more internal rotation and mutual mixing. The speed and direction of the water flow in different parts are different, which further enhances the turbulence effect. In addition, the water flow in the guide groove 13 constantly rubs against the groove wall during the flow process. This friction also causes the water flow to form more complex flow patterns at the microscopic level: the water flows out from the auxiliary water spray holes 22 at a high speed. The water sprayed from the front auxiliary water spray holes 22 directly enters the guide groove 13 and rapidly gathers and flows along the guide groove 13. The water sprayed from the auxiliary water spray holes 22 far away from the guide groove 13 rushes to the guide groove 13 at the upper layer of the guide groove 13, forming two layers of two vertically intersecting water flows. A vortex is formed at the intersection of the water flows, and splashes. A part of the water flow is sprayed out along the guide groove 13 in a vortex shape, and a part of the water flow overflows along the spikes 18 at a high speed, showing a scattered shape.The auxiliary nozzle is located outside the guide plate 12 and cooperates with the main nozzle 14. The auxiliary water spray hole 22 of the auxiliary nozzle 11 facing the main nozzle 25 is perpendicular to the spray direction of the main nozzle 14. When the main nozzle 14 sprays water, the auxiliary nozzle 11 sprays water at the same time. The water flow of the main nozzle 14 forms the main spray direction, and the water flow of the auxiliary nozzle 11 impacts and intersects with it. This vertical water flow interaction produces a strong mixing in the local area. When the main nozzle 14 sprays water horizontally at high speed, the splashing water flow overflowing from the top of the spike portion 18 and the main water flow form three streams of water, which are strong in the middle and dispersed on both sides, which can first wet the crystals and dust on the lamp holder 6 and then wash them with strong flow. The inclined portion 27 on the outside of the auxiliary nozzle 11 will change the angle and speed distribution of the water flow sprayed by the auxiliary nozzle 11, so that the water flow will be mutually entangled and disturbed in a larger range, exacerbating the overall turbulent effect. In the process of water spraying by the sprinkler head 8, this complex turbulence enables the water flow to cover the surface of the lamp holder 6 more comprehensively and evenly, thereby improving the cleaning efficiency.
[0021] In addition, the lamp holder 6 is symmetrically provided with a nozzle 7, which includes a bend 17. The bend 17 is provided with a convex portion 16 facing the irradiation direction of the lamp holder 6. The internal cavities of the bend 17 and the convex portion 16 are hollow, and the hollow passage is connected with an air pressure tube 19. The airflow ejected through the bend air hole 21 continues to flow to the convex portion 16, and a plurality of convex air holes 20 are provided on the inner side of the convex portion 16. The shape of the convex portion 16 and the distribution of the convex air holes 20 allow the airflow to be adjusted and dispersed again. The airflow ejected from the convex air holes 20 interacts with the airflow ejected from the bend air holes 21 but not completely dissipated, further aggravating the complexity and turbulence of the airflow. This complex airflow field formed on the surface of the lamp holder 6 is like a dynamic protective cover, which continuously pushes dust and water vapor that may affect lighting away from the lamp holder 6, thereby ensuring the stability of the lighting effect.
[0022] In addition, the inner side surface of the bend 17 is provided with a plurality of bend air holes 21, and the inner side surface of the convex portion 16 is provided with a plurality of convex air holes 20. The guide plate 12 and the auxiliary nozzle 11 and other structures enable the sprayed water to form a clean water flow in all directions and at multiple angles. With the rotation of the rotating fan blade 1, the dust accumulated on the surface of the lamp holder 6 is efficiently removed to ensure that the lighting light is not blocked. At the same time, the jet head 7 symmetrical up and down the lamp holder 6 plays a key role. The jet structure composed of the bend 17 with the bend air holes 21 and the convex portion 16 with the convex air holes 20 is supplied with air through the air pressure tube 19 to form a stable airflow barrier around the lamp holder 6. This airflow can not only prevent dust from attaching again, but also effectively prevent water vapor from condensing on the surface of the lamp holder 6 in an environment with high humidity, thus avoiding the problem of light scattering caused by water mist.
[0023] Among the three water flows mentioned above, the main water flow is affected by the gas ejected from the curved air hole 21 facing the lamp holder 6. The formed water flow is disturbed by the high-pressure gas before reaching the lamp holder 6, forming a water flow crossover. The lateral water flow flowing out of the guide groove 13 is blown into a water mist barrier by the high-pressure gas of the convex air hole 20, thereby preventing the moist dirt from secondary contaminating the vicinity of the lamp holder 6 during cleaning. The turbulent flow splashed from the spike portion 18 faces the curved air hole and is blown into a finer water mist, which infiltrates the corners, causing the crystalline dust to flow into the high-pressure cleaning range.
[0024] When the lamp head 6 does not need to be cleaned, the rotating motor 26 drives the fan blade bracket 2 to face upward, and the lamp head 6 illuminates forward normally. The illumination of the lamp head 6 is automatically adjusted by the detection result of the external environment brightness by the light intensity acquisition module 3. When the light intensity acquisition module 3 detects that the lamp head 6 is covered with dust and needs to be cleaned, the rotating motor 26 drives the fan blade bracket 2 to rotate downward, and the lamp head 6 is cleaned by rotating the fan blade 1 and the air jet 7. The detection process of the light intensity acquisition module 3 is as follows: A. The light intensity acquisition module 3 acquires a two-dimensional image of the current light intensity.
[0025] B. Analyze the two-dimensional image of light intensity to distinguish the dust-occluded area from the non-dust-occluded area. The process of distinguishing the dust-occluded area from the non-dust-occluded area is as follows: The current two-dimensional image of light intensity is compared with the two-dimensional image of historical light intensity. When the average light brightness reduction of a closed area exceeds a set threshold and the area of the closed area exceeds a set preset situation, the closed area is marked; the boundary of the marked closed area is traversed using a dynamic sliding window, and during the traversal process, the length, width and angle of the dynamic sliding window are adjusted to ensure that there is at least one extreme point of dynamic change of light intensity in the length and width directions of the dynamic sliding window, and a feature vector is formed using the light intensity of the extreme point of dynamic change of light intensity in each dynamic sliding window and the change direction of the extreme point of dynamic change of light intensity, and two adjacent feature vectors are used to fit the edge light intensity distribution map between the two adjacent feature vectors. The fitting method of the edge light intensity distribution map is that the brightness of each pixel in the edge light intensity distribution map is the weighted average of the light intensity in the two feature vectors, and the weighted value is inversely proportional to the Euclidean distance from the pixel to the corresponding feature vector. All edge illumination intensity distribution maps are combined and then smoothed to obtain an edge illumination intensity total map, which is used to identify dust-blocked areas. Using the edge illumination intensity total map to identify dust-blocked areas includes the following steps: calculating the brightness standard deviation of the edge illumination intensity total map, and if the brightness standard deviation is greater than a set threshold, it is determined to be a dust-blocked area. After the dust-blocked area is identified, the remaining areas are non-dust-blocked areas.
[0026] C. Determine the illumination brightness of the lamp holder 6 according to the average illumination intensity in the non-dust-shielded area.
[0027] D. When the comprehensive light transmittance of the dust-blocked area is less than the set threshold, the lamp head 6 is cleaned. The calculation method of the comprehensive light transmittance of the dust-blocked area is to calculate the average brightness of the dust-blocked area, define pixels with brightness lower than the average brightness as blocked pixels, and calculate the ratio of blocked pixels to the total pixels in the dust-blocked area as the comprehensive light transmittance of the dust-blocked area.
[0028] The tunnel lighting system of the present invention has a high degree of automation and good lighting stability, can realize accurate lighting brightness detection and self-cleaning, and saves human resources.
[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A tunnel lighting system, comprising a lamp body (4), a lamp holder (6) being arranged at the front end of the lamp body (4), characterized in that: A light intensity collection module (3) is arranged on the upper part of the lamp body (4); a support rod (23) is connected to the upper part of the lamp body (4); the support rod (23) is connected to a fan blade bracket (2) via a rotating motor (26); a free end of the fan blade bracket (2) is connected to a water supply straight pipe (10); a locking plate (26) is integrally arranged at the end of the fan blade bracket (2); a limit baffle (24) is arranged at the inner end of the water supply straight pipe (10); the locking plate (26) is slidably connected to the limit baffle (24) A sealing block (9) is sleeved at the joint between the water supply straight pipe (10) and the fan blade bracket (2), a water supply hose (28) is arranged on the fan blade bracket (2), a plurality of rotating fan blades (1) are axially connected to the free end of the water supply straight pipe (10), the rotating fan blades (1) rotate around the installation axis under the action of the airflow generated by the tunnel axial flow fan, a sprinkler head (8) is arranged on the side of the rotating fan blade (1) facing the lamp holder (6), and the rotating fan blade (1) is hollow inside to form a channel for water flow.
2. The tunnel lighting system according to claim 1, characterized in that: The lamp head (6) is symmetrically provided with an air jet head (7) at the top and bottom, the air jet head (7) comprising a bent portion (17), a convex portion (16) being provided on the bent portion (17) in the irradiation direction of the lamp head (6), the internal cavities of the bent portion (17) and the convex portion (16) being hollow, and the hollow passage being connected to a pressure pipe (19).
3. The tunnel lighting system according to claim 2, characterized in that: The inner side surface of the curved portion (17) is provided with a plurality of curved portion air holes (21), and the inner side surface of the convex portion (16) is provided with a plurality of convex portion air holes (20).
4. The tunnel lighting system according to claim 3, characterized in that: The sprinkler head (8) is provided with a sprinkler inner tube (5) inside, a filter (15) is provided at the front end of the sprinkler inner tube (5), a main nozzle (14) is fixedly connected to the outside of the filter (15), the main nozzle (14) is provided with a guide plate (12) symmetrically above and below, a spike portion (18) extending outward is provided at the top of the guide plate (12), a guide groove (13) is provided on the outside of the guide plate, and the guide groove (13) is located below the spike portion (18), a secondary nozzle (11) is symmetrically provided on the outside of the guide plate (12), an inclined portion (27) is provided on the outside of the secondary nozzle (11), and a secondary water spray hole (22) is provided on the secondary nozzle (11) in the direction toward the main nozzle (14), and the spraying direction of the secondary water spray hole (22) and the main nozzle (14) is perpendicular to each other.
5. A method for controlling a tunnel lighting system according to any one of claims 1 to 4, characterized in that The following steps are involved: A. Light intensity acquisition module (3) acquires a two-dimensional image of current light intensity; B. Analyze the two-dimensional image of light intensity to distinguish the dust-occluded area and the non-dust-occluded area; C. determining the illumination brightness of the lamp head (6) according to the average illumination intensity of the non-dust-blocked area; D. When the comprehensive light transmittance of the dust-blocked area is less than a set threshold, the lamp head (6) is cleaned.
6. The control method of the tunnel lighting system according to claim 5, characterized in that: The process of distinguishing dust-occluded areas from non-dust-occluded areas is as follows: Compare the current light intensity two-dimensional image with the historical light intensity two-dimensional image, and when the average light intensity of a closed area decreases by more than a set threshold and the area of the closed area exceeds a preset threshold, mark the closed area; A dynamic sliding window is used to traverse the boundary of the marked closed area. During the traversal process, the length, width and angle of the dynamic sliding window are adjusted to ensure that there is at least one extreme point of dynamic change of light intensity in the length and width directions of the dynamic sliding window. The light intensity of the extreme point of dynamic change of light intensity in each dynamic sliding window and the change direction of the extreme point of dynamic change of light intensity are used to form a feature vector. Two adjacent feature vectors are used to fit the edge light intensity distribution map between the two adjacent feature vectors. All edge light intensity distribution maps are combined and smoothed to obtain an edge light intensity total map. The edge light intensity total map is used to identify the dust occluded area. After the dust occluded area is identified, the remaining area is the non-dust occluded area.
7. The control method of the tunnel lighting system according to claim 6, characterized in that: The fitting method of the edge illumination intensity distribution diagram is: The brightness of each pixel in the edge illumination intensity distribution map is the weighted average of the illumination intensities in the two feature vectors, and the weighted value is inversely proportional to the Euclidean distance from the pixel to the corresponding feature vector.
8. The control method of the tunnel lighting system according to claim 7, characterized in that: Using the edge illumination intensity map to identify dust-occluded areas includes the following steps: The brightness standard deviation of the total edge illumination intensity map is calculated. If the brightness standard deviation is greater than the set threshold, it is determined to be a dust-occluded area.
9. The control method of the tunnel lighting system according to claim 5, characterized in that: The calculation method for the comprehensive light transmittance of the dust-blocked area is: The average brightness of the dust-occluded area is calculated, and pixels with brightness lower than the average brightness are defined as occluded pixels. The ratio of occluded pixels to the total pixels in the dust-occluded area is calculated as the comprehensive light transmittance of the dust-occluded area.