Reflective sign dynamic detection method and device for tunnel safety facilities

Abstract

The invention relates to the technical field of tunnel sign detection, and particularly discloses a reflective sign dynamic detection method and device for tunnel safety facilities, the device comprises a machine body and a detection cavity, the detection cavity is located in the machine body, a detection frame and a detection unit are arranged in the detection cavity, and the device is characterized by further comprising an environment detection assembly, the environment detection assembly comprises a rotationally arranged detection disc and a plurality of detection simulation boxes arranged on the detection disc in an array mode, and the detection disc rotates to switch the detection simulation boxes to be close to the detection frame in sequence; the detection unit comprises a visual camera and a photoelectric sensor, and the visual camera and the photoelectric sensor are mounted on the side wall of the detection cavity and correspond to the position of the detection frame; by introducing the environment detection assembly, when the reflective sign is detected at a production end, various complex environments possibly encountered by the reflective sign in actual use of a tunnel can be simulated and reproduced more truly, so that the detection effect is ensured to be more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel sign detection, and in particular discloses a method and a device for dynamic detection of reflective signs of tunnel safety facilities. Background Art

[0002] The reflective signs in tunnel safety facilities are the core visual guidance elements for driving safety. The stability of their reflective performance is directly related to the visibility guarantee in extreme environments. For traffic safety, the quality and performance testing of reflective signs is often extremely critical. When testing reflective signs, the existing industry mostly focuses on on-site field testing of reflective signs that have been put into use. This testing method often has certain defects. The reason is that due to the limitations of tunnel operating conditions, the testing operation requires the closure of the lane or the establishment of operation signs on the lane, which not only results in high testing costs, but also poses certain safety hazards to the testing personnel and passing vehicles during the testing operation.

[0003] Therefore, the industry is paying more and more attention to the quality status of reflective signs during the production and manufacturing stage, so as to ensure the quality performance of reflective signs at the source of production. However, the existing production-end testing equipment also has system defects. This is because due to the limitations of the technical environment, most of its production-end testing equipment can only be tested under a single standard environment, and it is difficult to simulate and reproduce the various complex environmental conditions that reflective signs may encounter in actual use in tunnels, such as rain, fog, dust, changes in light and darkness, etc., which leads to the test results cannot truly reflect the performance of reflective signs in actual applications.

[0004] Therefore, based on industry needs, the present application has specially developed a method and equipment for dynamic detection of reflective signs for tunnel safety facilities. Summary of the invention

[0005] The object of the present invention is to provide a method and device for dynamic detection of reflective signs of tunnel safety facilities, so as to solve one of the above-mentioned technical problems existing in the prior art.

[0006] Specifically, the present invention is achieved through the following technical solutions:

[0007] A reflective sign dynamic detection device for tunnel safety facilities, comprising a body and a detection cavity, wherein the detection cavity is located in the body, and a detection frame and a detection unit are arranged in the detection cavity, characterized in that it also comprises an environmental detection component, wherein the environmental detection component comprises a detection disk that is rotatably arranged, and a plurality of detection simulation boxes that are arranged in an array on the detection disk, wherein the detection disk switches a plurality of detection simulation boxes by rotation so as to sequentially approach the detection frame;

[0008] The detection frame includes a first state and a second state. When in the first state, the detection frame is close to the corresponding detection simulation box; when in the second state, the detection frame is far away from the corresponding detection simulation box;

[0009] A switching mechanism is also provided at the bottom of the detection frame, and the switching mechanism dynamically switches the first state and the second state of the detection frame when the detection plate rotates;

[0010] The detection unit includes a visual camera and a photoelectric sensor, both of which are installed on the side wall of the detection cavity and correspond to the position of the detection frame, and are used to detect the appearance and reflective performance of the reflective sign.

[0011] Based on the above technical scheme, this scheme, by introducing an environmental detection component, can achieve a more realistic simulation and reproduction of various complex environments that reflective signs may encounter in actual use in tunnels when detecting reflective signs at the production end, thereby ensuring that its detection effect is more accurate; specifically, the environmental detection component is composed of a rotating detection disk and a plurality of detection simulation boxes arrayed thereon, and different environmental conditions (such as dust, rain, fog, etc.) can be set in the detection simulation box, and the detection simulation box can be successively approached to the detection frame by the rotation of the workstation seat, so that the various complex environments that reflective signs may encounter in actual use in tunnels can be simulated, and the actual performance of the reflective signs when working under tunnel conditions is truly restored. At the same time, in this scheme, the detection frame has a first state and a second state, and it is achieved by the switching mechanism at the bottom following the rotation of the detection simulation box to achieve linkage adjustment and switching, so it ensures that when different detection simulation boxes intervene to implement detection, the reflective sign is already in the best detection position in closed contact with the detection simulation box, thereby achieving good coordination between the detection frame and each detection simulation box, and ensuring the authenticity and reliability of the detection results and detection data of the detection equipment.

[0012] According to a further technical solution, the switching mechanism includes a switching disk and a moving member;

[0013] The switching disk is coaxially attached to the bottom of the detection disk, and a concave arc-shaped notch corresponding to a plurality of detection simulation boxes is opened on the outer edge of the switching disk;

[0014] The moving part includes a moving block connected to the bottom of the detection frame, a radial guide plate is provided on the outside of the moving block, and a guide groove that slides with the moving block is opened at the middle position of the radial guide plate, a spring is connected between the end of the guide groove and the moving block, a connecting rod is also provided at the bottom of the moving block, and a roller that is rollingly connected to the outer edge of the switching disk is provided at one end of the connecting rod facing the concave arc notch.

[0015] Based on the switching mechanism disclosed in the above technical solution, the concave arc-shaped notch on the outer edge of the switching disk and the mechanical linkage design of the moving part assembly ensure that the detection frame can be accurately close to or away from different detection simulation boxes, ensuring that the reflective mark is closely coordinated with various environmental conditions during the detection process, so that the performance of the reflective mark in different environments can be accurately captured, avoiding detection errors caused by inaccurate position, thereby improving the reliability of the detection results.

[0016] As an optimal technical solution, several detection simulation boxes are distributed in a circular array, and several detection simulation boxes include dust boxes, rainwater boxes and cloud boxes. The dust boxes, rainwater boxes and cloud boxes are all equipped with nozzles at the position of the detection frame, and each nozzle is connected to the corresponding medium storage tank in the outside through a pipeline. The detection simulation boxes of different environmental conditions are compactly integrated into one detection device, and the nozzles in each detection simulation box (dust box, rainwater box and cloud box) are connected to the corresponding medium storage tank (dust tank, water tank and cloud tank), and the corresponding medium (dust, water droplets and cloud) is sprayed out to realize automatic dynamic simulation in multiple environments, ensuring comprehensive automatic detection of reflective signs in various actual scenes in the tunnel.

[0017] According to a further specific technical solution, lighting components are provided on the upper interior of the dust box, rainwater tank and fog box, and each lighting component includes a lamp holder with a lighting lamp bead installed in the middle of the bottom, and a protective lampshade buckled under the lamp holder.

[0018] The above scheme can realistically simulate the lighting conditions of reflective signs in various actual usage scenarios by setting up lighting components in different environmental detection simulation boxes and providing light sources through the lighting beads at the bottom of the lamp holder. At the same time, the protective lampshade can protect the lighting beads when the environmental simulation is reproduced in the detection simulation box to prevent the lighting beads from being affected, thereby improving the accuracy and reliability of the detection results.

[0019] According to a further preferred technical solution, the protective lampshade has a double-layer structure and includes a light-transmitting inner layer and a light-transmitting outer layer, and there is a gap between the light-transmitting inner layer and the light-transmitting outer layer, and the gap is filled with an electrochromic material.

[0020] It should be noted that this solution, by introducing electrochromic materials into the protective lampshade, can dynamically adjust the transmittance and intensity of light according to actual detection needs, thereby realizing accurate simulation of different environmental lighting conditions. Specifically, this solution, by combining it with the protective lampshade, not only realizes the protection of the lighting beads by the protective lampshade in various environments, but also enables the protective lampshade to provide a variety of light intensities matching the actual environment in different detection simulation boxes (such as dust, rain, fog, etc.) through the dynamic adjustment ability of the electrochromic material, thereby avoiding detection errors caused by excessive or weak light, so as to achieve not only the true reflection of the performance of the reflective sign in various complex environments, but also the further improvement of the scientificity and comprehensiveness of the detection by optimizing the light conditions.

[0021] In the above technical solution, the visual camera and the photoelectric sensor are integrated on the detection board, the visual camera is located in the middle of the detection board, and the photoelectric sensors are arranged around the visual camera. Multi-dimensional and all-round detection is achieved, and the image information and light signal data of the reflective mark can be collected at the same time, solving the problem of incomplete detection results caused by the single detection method of traditional detection equipment. That is to say, the visual camera captures the appearance characteristics of the mark, and the photoelectric sensor detects its reflective performance. The combination of the two ensures the comprehensiveness and accuracy of the detection results.

[0022] In a further specific technical solution, the detection plate is connected to the side wall of the detection cavity through a detection adjustment mechanism to dynamically adjust the angle of the detection plate to adapt to the reflection performance detection under different environmental conditions;

[0023] The detection and adjustment mechanism specifically includes an adjustment cylinder, a movable rod and a pushing rod. A cavity is formed inside the adjustment cylinder. One end of the movable rod is connected to the detection plate, and the other end thereof passes through the internal cavity of the adjustment cylinder. The movable rod and the adjustment cylinder are spherically connected at the penetration position. The pushing rods are symmetrically arranged in the internal cavity of the adjustment cylinder and are respectively located on both sides of the movable rod. The two ends of each pushing rod are respectively spherically connected with the adjustment cylinder and the movable rod.

[0024] It should be understood that the present solution realizes flexible adjustment of the detection board through the structure of the above-mentioned detection adjustment mechanism, so that during the detection process, dynamic direction adjustment of the detection board based on different simulation environments and / or different lighting conditions is realized, so that the detection unit on the detection board can dynamically adjust the position and angle according to actual detection needs, thereby adapting to the detection needs in various detection scenarios, and ensuring the authenticity and comprehensiveness of the final detection results.

[0025] Based on the above technical solution, a plurality of clips for fixing the reflective mark to be tested are provided on the side of the detection frame facing the detection unit. The clips facilitate fixing and placing the reflective mark to be tested, thereby facilitating the normal progress of subsequent detection work.

[0026] According to the above technical solution, a reflective sign dynamic detection device for tunnel safety facilities is proposed. This solution proposes a reflective sign dynamic detection method for tunnel safety facilities. Specifically, the method includes the following steps:

[0027] Step 1: Install the reflective sign to be tested on the test frame and fix it to ensure that the surface of the sign is flat and fits tightly with the test frame;

[0028] Step 2, start the environmental detection component, so that the detection plate drives the detection simulation box to rotate, and dynamically switches the first state and the second state of the detection frame through the switching mechanism, so that the detection frame is close to and away from each detection simulation box in turn;

[0029] Step 3, when the detection frame is in the first state, that is, when the detection frame is close to the detection simulation box, the nozzle in the corresponding detection simulation box is controlled to spray the corresponding medium, and the illumination component is controlled to provide light with different illumination intensities, and the detection unit is started at the same time to collect data on the appearance and reflection performance of the reflective mark;

[0030] Step 4, after completing a single test, close the nozzle and the illumination component in the current test simulation box, control the test unit to stop data collection, and then continue to start the test disk to rotate to switch to the next test simulation box, and repeat step 3 until the environmental simulation test of all test simulation boxes is completed;

[0031] Step 5: Analyze and process the final collected data and form a final test report to evaluate the quality and performance of the reflective sign.

[0032] It should be noted that in the above scheme, the core problem of "environmental simulation distortion and low detection efficiency" in traditional reflective sign detection is solved through the coordinated design of the annular array environmental detection component and the dynamic detection unit. In other words, this method not only improves the comprehensiveness, accuracy and reliability of detection through the efficient coordination of various components of the equipment, but also significantly reduces the detection cost and time, providing a more advanced and effective solution for the quality control of tunnel safety facilities. This innovative detection process and method breaks through the limitations of traditional technology and has significant creativity and practicality.

[0033] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0034] 1. The present invention, by introducing an environmental detection component, can achieve a more realistic simulation and reproduction of various complex environments that the reflective sign may encounter in actual use in the tunnel when detecting the reflective sign at the production end, thereby ensuring that the detection effect is more accurate; specifically, the environmental detection component is composed of a rotating detection disk and a plurality of detection simulation boxes arrayed thereon, and different environmental conditions (such as dust, rain, fog, etc.) can be set in the detection simulation box, and the detection simulation box can be successively close to the detection frame through the rotation of the station seat, so that the various complex environments that the reflective sign may encounter in actual use in the tunnel can be simulated, and the real performance of the reflective sign when working under the tunnel working condition can be truly restored. At the same time, in this solution, the detection frame has a first state and a second state, and it is achieved by the switching mechanism at the bottom following the rotation of the detection simulation box to achieve linkage adjustment and switching, so that it ensures that when different detection simulation boxes intervene to implement the detection, the reflective sign is already in the best detection position in closed contact with the detection simulation box, thereby achieving good coordination between the detection frame and each detection simulation box, and ensuring the authenticity and reliability of the detection results and detection data of the detection equipment;

[0035] 2. The present invention sets a switching mechanism, which utilizes the concave arc-shaped notch on the outer edge of the switching disk and the mechanical linkage design of the moving part assembly to ensure that the detection frame can accurately approach or move away from different detection simulation boxes, ensuring that the reflective mark is closely matched with various environmental conditions during the detection process, so that the performance of the reflective mark in different environments can be accurately captured, avoiding detection errors caused by inaccurate position, thereby improving the reliability of the detection results;

[0036] 3. The present invention can realistically simulate the lighting conditions of the reflective sign in various actual use scenarios by setting up an illumination component and providing a light source through the illumination lamp beads at the bottom of the lamp holder. At the same time, the protective lampshade can protect the illumination lamp beads when the detection simulation box performs environmental simulation reproduction to avoid the illumination lamp beads being affected, thereby improving the accuracy and reliability of the detection results; further, by introducing electrochromic materials into the protective lampshade, the transmittance and intensity of light can be dynamically adjusted according to actual detection requirements, thereby achieving accurate simulation of different environmental lighting conditions. Specifically, this solution, through its combination with the protective lampshade, not only realizes the protection of the illumination lamp beads by the protective lampshade in various environments, but also enables the protective lampshade to provide a variety of light intensities matching the actual environment in different detection simulation boxes (such as dust, rain, fog, etc.) through the dynamic adjustment ability of the electrochromic material, thereby avoiding detection errors caused by excessive or weak light, so as to achieve not only the ability to truly reflect the performance of the reflective sign in various complex environments, but also to further improve the scientificity and comprehensiveness of the detection by optimizing the light conditions;

[0037] 4. The present invention cleverly realizes flexible adjustment of the detection board by setting up a detection adjustment mechanism, so that during the detection process, the dynamic direction adjustment of the detection board based on different simulation environments and / or different lighting conditions is realized, so that the collection angle of the detection unit on the detection board can be dynamically optimized, ensuring the comprehensiveness of the appearance data and reflection data of the reflective mark in different simulation environments. The position and angle are dynamically adjusted according to actual detection needs, thereby adapting to the detection needs in various detection scenarios and ensuring the authenticity of the final detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0039] Figure 1 This is a schematic diagram of the internal side structure of the device of Example 1 of the present invention;

[0040] Figure 2 This is a schematic diagram of the internal top view of the device of Example 1 of the present invention;

[0041] Figure 3 This is a schematic diagram of the internal structure of the detection simulation box of the present invention, which is intended to show its specific internal structure;

[0042] Figure 4 It is a partial structural schematic diagram of the detection unit of the present invention, which is intended to show its status;

[0043] Figure 5 This is a partial enlarged structural schematic diagram of the illumination assembly of Embodiment 2 of the present invention, which is intended to illustrate its specific structure;

[0044] Figure 6 This is a schematic diagram of the internal top view structure of the detection and adjustment mechanism of Example 2 of the present invention, which is intended to illustrate the specific structure of the adjustment platform;

[0045] Figure 7 It is a schematic diagram of the internal side structure of the detection and adjustment mechanism of Example 2 of the present invention;

[0046] Figure 8 It is a schematic diagram of the internal structure of the adjustment platform of the present invention, which is intended to show the shape and structure of the slideway;

[0047] Fig. 9 Schematic diagram of the method steps of Example 3 of the present invention.

[0048] The reference numerals represent: 1. body; 11. detection chamber; 21. detection disk; 22. detection simulation box; 3. detection frame; 41. switching disk; 42. connecting rod; 43. concave arc-shaped notch; 44. moving block; 45. radial guide plate; 46. guide groove; 47. spring; 5. illumination assembly; 51. lamp holder; 521. light-transmitting inner layer; 522. light-transmitting outer layer; 523. gap; 6. nozzle; 71. visual camera; 72. photoelectric sensor; 81. adjustment cylinder; 82. movable rod; 83. push rod; 84. adjustment table; 85. slide groove; 86. slider; 9. detection plate. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0050] Embodiment 1;

[0051] See also Figures 1 to 3 As shown, this embodiment discloses a reflective sign dynamic detection device for tunnel safety facilities, including a body 1 and a detection chamber 11, the detection chamber 11 is located in the body 1, and a detection frame 3 and a detection unit are arranged in the detection chamber 11, characterized in that it also includes an environmental detection component, the environmental detection component includes a detection disk 21 that is rotatably arranged, and a plurality of detection simulation boxes 22 arranged in an array on the detection disk 21, and the detection disk 21 switches the plurality of detection simulation boxes 22 by rotation to sequentially approach the detection frame 3;

[0052] The detection rack 3 includes a first state and a second state. When in the first state, the detection rack 3 is close to the corresponding detection simulation box 22; when in the second state, the detection rack 3 is away from the corresponding detection simulation box 22;

[0053] A switching mechanism is also provided at the bottom of the detection frame 3, and the switching mechanism dynamically switches the first state and the second state of the detection frame 3 when the detection plate 21 rotates;

[0054] The detection unit includes a visual camera 71 and a photoelectric sensor 72. The visual camera 71 and the photoelectric sensor 72 are both installed on the side wall of the detection cavity 11 and at the position corresponding to the detection frame 3, and are used to detect the surface appearance and reflective performance of the reflective mark to be detected.

[0055] In the above embodiment, by introducing the environmental detection component, it is achieved that when the reflective mark is detected at the production end, various complex environments that the reflective mark may encounter in actual use in the tunnel can be more realistically simulated and reproduced, thereby ensuring that its detection effect is more accurate; specifically, the environmental detection component is composed of a rotatably arranged detection disk 21 and a plurality of detection simulation boxes 22 arrayed thereon, and different environmental conditions (such as dust, rain, fog, etc.) can be set in the detection simulation box 22, and the detection simulation box 22 can be moved closer to the detection frame 3 in turn by rotating the work station seat, so as to simulate the reflective mark in the tunnel. The various complex environments that may be encountered in actual use truly restore the actual performance of the reflective sign when working under tunnel conditions. At the same time, in this solution, the detection frame 3 has a first state and a second state, and it is achieved by the switching mechanism at the bottom following the rotation of the detection simulation box 22 to realize the linkage adjustment and switching. Therefore, it ensures that when different detection simulation boxes 22 are involved in the detection, the reflective sign is in the best detection position in close contact with the detection simulation box 22, thereby achieving good coordination between the detection frame 3 and each detection simulation box 22, and ensuring the authenticity and reliability of the detection results and detection data of the detection equipment.

[0056] That is, the technical solution adopted in this embodiment is obviously different from the prior art in that the prior art can usually only detect the reflective sign under a single standard environment, and cannot simulate complex environmental conditions such as dust, rain, fog, etc., resulting in the detection results not being able to truly reflect the performance of the reflective sign in actual applications under the tunnel ring; while for this solution, by setting the detection disk 21 and the detection simulation box 22 arrayed thereon, it is possible to switch different environmental conditions in turn, so that the reflective sign undergoes a variety of actual use scenarios during the detection process. This design not only improves the comprehensiveness and accuracy of the detection, but also greatly improves the detection efficiency of the detection equipment and the accuracy of the detection data through a continuous dynamic detection process.

[0057] It should also be added that Figure 1 and Figure 2 As shown in FIG. 1 , the bottom of the detection disk 21 is connected to the output end of the driving motor below the machine body 1 , so as to drive the detection disk 21 to rotate through the driving motor.

[0058] In a further embodiment, the switching mechanism includes a switching disk 41 and a moving member;

[0059] The switching disk 41 is coaxially attached to the bottom of the detection disk 21, and a concave arc-shaped notch 43 corresponding to a plurality of detection simulation boxes 22 is opened on the outer edge of the switching disk 41;

[0060] The moving part includes a moving block 44 connected to the bottom of the detection frame 3, a radial guide plate 45 is provided on the outside of the moving block 44, and a guide groove 46 that slides with the moving block 44 is opened at the middle position of the radial guide plate 45, a spring 47 is connected between the end of the guide groove and the moving block 44, and a connecting rod 42 is also provided at the bottom of the moving block 44, and a roller that is rollingly connected to the outer edge of the switching disk 41 is provided at one end of the connecting rod 42 facing the concave arc notch 43.

[0061] Based on the switching mechanism disclosed in this embodiment, through the mechanical linkage design of the concave arc notch 43 on the outer edge of the switching disk 41 and the moving part assembly, it is ensured that the detection frame 3 can accurately approach or move away from different detection simulation boxes 22, ensuring that the reflective mark is closely matched with various environmental conditions during the detection process, so that the performance of the reflective mark in different environments can be accurately captured, avoiding detection errors caused by inaccurate position, thereby improving the reliability of the detection results. Specifically:

[0062] When the detection disk 21 drives the switching disk 41 to rotate, the concave arc-shaped notch 43 on the outer edge of the switching disk 41 forms a dynamic coupling with the moving part assembly (between the roller, the connecting rod 42 and the moving block 44), that is, the roller is always in rolling contact with the outer edge of the switching disk 41. When the switching disk 41 rotates to the position of the concave arc-shaped notch 43 (corresponding to the target detection simulation box 22 station), the roller produces radial displacement due to the change in curvature at the notch, and the elastic restoring force of the spring 47 during the initial compression pushes the connecting rod 42, and drives the moving block 44 to move laterally along the guide groove of the radial guide plate 45, so that the spring 47 drives the detection frame 3 to switch from the second state (away from the detection simulation box 22) to the first state (close to the detection simulation box 22). For example, when the detection disk 21 rotates to make the dust detection simulation box 22 When aligning the detection frame 3, the depth design of the concave arc notch 43 drives the roller to move toward the center, and the moving block 44 drives the detection frame 3 to approach the dust box and align it under the action of the spring 47. When switching away, as the switching disk 41 rotates, the roller is forced to move from the concave arc notch 43 on the edge of the switching disk 41 to the complete edge (without the concave arc notch 43), thereby forcing the moving block 44 to compress the spring 47 through the guide groove 46, and drive the detection frame 3 to gradually move away from the dust box. In this way, through the rotation switching design, it is ensured that the detection frame 3 can always accurately approach or move away from different detection simulation boxes 22 as the detection simulation box 22 rotates and switches, ensuring that the reflective mark is closely matched with various environmental conditions during the detection process, thereby improving the reliability of the detection results.

[0063] As a preferred embodiment, Figure 2As shown, several detection simulation boxes 22 are distributed in a circular array, and several detection simulation boxes 22 include dust boxes, rainwater boxes and cloud boxes. Nozzles 6 are installed in the dust boxes, rainwater boxes and cloud boxes at the positions facing the detection frame 3, and each nozzle 6 is connected with the corresponding medium storage tank in the outside through a pipeline; the detection simulation boxes 22 with different environmental conditions are compactly integrated into one detection device. In the specific implementation, the nozzles 6 in each detection simulation box 22 (dust box, rainwater tank and cloud box) are connected with the corresponding medium storage tank (dust tank, water tank and cloud tank, not shown in the figure), and the corresponding medium (dust, water droplets and cloud fog) is sprayed out through the nozzles 6 under the action of the pressure pump, so that the detection simulation box 22 can perform automatic dynamic simulation under multiple environments, ensuring the comprehensive automatic detection of reflective signs in various actual scenes in the tunnel.

[0064] In addition, for the detection simulation box 22, the side corresponding to the reflective mark to be detected can be set to a closed shape or an open shape according to actual needs. That is to say, when it is necessary to perform a rapid multi-environment simulation detection on the reflective mark, in order to shorten the cleaning time of the reflective mark (that is, to prevent the corresponding medium sprayed from the detection simulation box 22 from adhering to the reflective mark), a closed detection simulation box 22 can be used. When it is necessary to perform a more accurate or more practical detection on the reflective mark, an open detection simulation box 22 can be used (such as in Figures 1 to 3 All shown in the figure are open detection simulation boxes 22) to achieve medium assistance on the reflective mark, so as to fit the actual usage scenario. Regardless of whether it is an open or closed detection simulation box 22, a pipe extending to the outside is provided at the bottom, and the corresponding medium prepared during the detection is recovered and discharged through the pipe.

[0065] Embodiment 2;

[0066] This embodiment is based on embodiment 1. Figure 5 As shown in the figure, a lighting assembly 5 is provided above the interior of the dust box, the rainwater box and the cloud box. Each lighting assembly 5 includes a lamp holder 51 with a lighting lamp bead installed in the middle of the bottom, and a protective lampshade buckled under the lamp holder 51.

[0067] The above-mentioned embodiment, by setting the lighting component 5 in the detection simulation box 22 of different environments and providing the light source through the lighting beads at the bottom of the lamp holder 51, can truly simulate the lighting conditions of the reflective sign in various actual use scenarios. At the same time, the protective lampshade can protect the lighting beads when the detection simulation box 22 performs environmental simulation reproduction to avoid the lighting beads being affected, thereby improving the accuracy and reliability of the detection results.

[0068] It should be understood that in traditional detection equipment, the lighting component 5 cannot adapt to the real-time lighting requirements of dynamic environments such as rain, fog, and dust in tunnel detection. This is because the protective lampshade of traditional detection equipment is usually a single-layer structure, and it is difficult to dynamically adjust the transmittance of the lampshade, resulting in the light conditions being difficult to accurately match the actual usage scenarios when simulating different environments, thereby affecting the authenticity and reliability of the detection results.

[0069] In view of this, this embodiment provides a more preferred implementation method for the illumination assembly 5. That is, in this embodiment, please refer to Figure 5 The protective lampshade has a double-layer structure and includes a light-transmitting inner layer 521 and a light-transmitting outer layer 522 , and there is a gap 523 between the light-transmitting inner layer 521 and the light-transmitting outer layer 522 , and the gap 523 is filled with electrochromic material.

[0070] It should be noted that this embodiment realizes continuous adjustment and adaptive matching of light intensity through the synergistic effect of the double-layer lampshade structure and the electrochromic material, and utilizes the electrochromic material to adjust the transmittance of the protective lampshade by adjusting the voltage. The transmittance and intensity of light can be dynamically adjusted according to actual detection needs, thereby realizing accurate simulation of different environmental lighting conditions. Specifically, this scheme, through its combination with the protective lampshade, not only realizes the protection of the lighting beads by the protective lampshade in various environments, but also enables the protective lampshade to provide a variety of light intensities matching the actual environment in different detection simulation boxes 22 (such as dust, rain, fog, etc.) through the dynamic adjustment ability of the electrochromic material, thereby avoiding detection errors caused by excessive or weak light, so as to achieve not only the true reflection of the performance of the reflective sign in various complex environments, but also the further improvement of the scientificity and comprehensiveness of the detection by optimizing the light conditions.

[0071] What needs to be added in this embodiment is that the electrochromic material is preferably tungsten trioxide, and is prepared into a film by magnetron sputtering and filled in the gap 523 between the protective inner layer and the protective outer layer, so that an oxidation-reduction reaction occurs under the action of the electric field, thereby changing its color and optical properties, and realizing dynamic adjustment of the light transmittance. Specifically, under the action of the electric field, cations and electrons of tungsten trioxide are injected into the lattice gaps, causing color changes, and by controlling the voltage, the transmittance of the material can be accurately adjusted, so that the protective lampshade can simulate environmental conditions of different light intensities and angles, thereby improving the flexibility and adaptability of detection.

[0072] In addition, in the above embodiments, it should be noted that Figure 4 As shown, the visual camera 71 and the photoelectric sensor 72 are integrated on the detection board 9, the visual camera 71 is located in the middle of the detection board 9, and the photoelectric sensor 72 is arranged around the visual camera 71 and distributed in a ring array.

[0073] In the above embodiment, for the visual camera 71, it is preferred to use a high-resolution, global shutter industrial camera with a monochrome CMOS sensor inside, with a resolution of 752X480 and a frame rate of 20Hz; it can capture high-precision image data and transmit it to the external processing end to ensure accurate detection of the appearance image features of the reflective mark under different lighting and environmental conditions, and its global shutter characteristics can effectively avoid motion blur and improve image quality; and for the photoelectric sensor 72, it is suitable for detecting non-electrical physical quantities such as light intensity and illuminance that directly cause changes in light quantity, and has the characteristics of high detection distance, fast response time and high resolution, that is, it includes a photodiode (preferably an avalanche photodiode), which is used to receive the light signal reflected by the reflective mark, convert it into a corresponding electrical signal and transmit it to the external processing end for data processing and analysis, so as to accurately detect the reflective performance of the reflective mark and ensure the reliability of the detection result. In addition, the visual camera 71 and the photoelectric sensor 72 are connected to the external processing end through a high-speed data interface (such as USB3.0 or Ethernet interface), and the external processing end can be an industrial computer or an embedded system (not shown in the figure) and equipped with special image processing and data analysis software for real-time processing and analysis of detection data to achieve dynamic detection of reflective signs.

[0074] Through the above-mentioned implementation mode, the equipment realizes multi-dimensional and all-round detection, and can simultaneously collect image information and light signal data of reflective signs, solving the problem of incomplete detection results caused by a single detection method of traditional detection equipment. That is to say, the visual camera 71 captures the appearance characteristics of the sign, and the photoelectric sensor 72 detects its reflective performance. The combination of the two ensures the comprehensiveness and accuracy of the detection results.

[0075] Further specific technical solutions, in Figure 1 and Figure 2 As shown in the figure, the detection plate 9 is connected to the side wall of the detection cavity 11 through a detection adjustment mechanism to dynamically adjust the angle of the detection plate 9 to adapt to the reflection performance detection under different environmental conditions;

[0076] Specifically, the detection and adjustment mechanism includes an adjustment cylinder 81, a movable rod 82 and a pushing rod 83. A cavity is formed inside the adjustment cylinder 81. One end of the movable rod 82 is connected to the detection plate 9, and the other end thereof passes through the internal cavity of the adjustment cylinder 81. The movable rod 82 and the adjustment cylinder 81 are spherically connected at the penetration position. The pushing rod 83 is symmetrically arranged in the internal cavity of the adjustment cylinder 81 and is respectively located on both sides of the movable rod 82. The two ends of each pushing rod 83 are respectively spherically connected with the adjustment cylinder 81 and the movable rod 82.

[0077] It should be understood that the present solution realizes flexible adjustment of the detection plate 9 through the above-mentioned detection adjustment mechanism, so that during the detection process, the detection plate 9 can be dynamically adjusted in direction based on different simulation environments and / or different lighting conditions, so that the detection unit on the detection plate 9 can dynamically adjust the position and angle according to actual detection needs, that is, when it is necessary to adjust the angle of the detection unit, an external driving signal acts on the push rod 83 (such as when the electric cylinder or hydraulic push rod receives a start signal), the push rod 83 is extended and retracted, and through the ball hinges at both ends thereof (respectively connected to the adjustment cylinder 81 and the movable rod 82), the axial thrust is converted into radial swing of the movable rod 82 through the lever principle. Specifically, when the left push rod 83 is extended, the ball joint connected to the adjustment cylinder 81 generates a reverse force to push the left push rod 83. The movable rod 82 deflects to the right around the ball joint (maximum ±15°), and at the same time, the right push rod 83 is synchronously shortened due to the symmetrical layout to balance the torque; conversely, when the right push rod 83 is extended, the movable rod 82 deflects to the left, thereby adapting to the detection requirements of different angles in various detection scenarios, ensuring the authenticity and comprehensiveness of the final detection results of the reflective mark, which solves the problem that the detection unit in traditional detection equipment is usually fixed and difficult to flexibly adjust according to different detection environments and needs, resulting in a lack of comprehensive and effective detection results. At the same time, the push of the above-mentioned push rod 83 ensures flexibility and stability in the entire dynamic adjustment process, so that during adjustment, the visual camera 71 and the photoelectric sensor 72 can both stably and accurately align with the reflective mark, thereby further improving the accuracy of detection.

[0078] As a further preferred implementation of the above embodiment, it is also necessary to further explain that in the above embodiment, the movable rod 82 can only be adjusted in the left and right swing angle, but it is difficult to adjust in the pitch direction, so its detection effect is still limited. For this reason, the present embodiment further provides an adjustment platform 84 at the end of the movable rod 82 inside the adjustment cylinder 81, such as Figures 6 to 8 As shown, a concave spherical surface is formed inwardly on one side of the adjustment platform 84 corresponding to the end of the movable rod 82, and a sine curve-shaped slide groove 85 is provided inside the concave spherical surface. The bottom depth of the slide groove 85 is consistent, and a slider 86 is slidably provided inside the slide groove 85, and the slider 86 is connected to one end of the movable rod 82 extending into the adjustment cylinder 81;

[0079] It can be understood that the above embodiment realizes the full-range angle adjustment of the detection plate 9 through the composite motion conversion mechanism of the sinusoidal groove 85 of the adjustment table 84 and the ball joint. Specifically, when the push rod 83 is extended (such as the left push rod 83 is extended), it applies a radial thrust to the movable rod 82, and the slider 86 at the end of the movable rod 82 slides along the sinusoidal groove 85 of the concave spherical surface of the adjustment table 84. Since the groove 85 has a consistent depth and a sinusoidal waveform, the linear motion of the slider 86 is decomposed into horizontal swings (along the peak-to-peak motion of the groove 85). For example, when the slider 86 moves from the crest of the slide groove 85 to the trough, the end of the movable rod 82 swings to the right (maximum ±15°) and pitches downward (±5°), and the movable rod 82 is spherically connected, which allows it to rotate freely in three-dimensional space, so that the detection plate 9 can synchronously complete the swing adjustment of left and right swing + up and down pitch, thereby realizing the overall all-round angle adjustment of the detection plate 9 through the synergistic effect of the nonlinear slide groove 85 trajectory and the concave spherical constraint.

[0080] That is, what is different from the prior art is that it cleverly realizes further all-round flexible adjustment of the detection plate by further setting up an adjustment table of the detection adjustment mechanism, so that during the detection process, the dynamic direction adjustment of the detection plate based on different simulation environments and / or different lighting conditions is realized, so that the collection angle of the detection unit on the detection board can be dynamically optimized to ensure the comprehensiveness of the appearance data and reflection data of the reflective mark in different simulation environments, and dynamically adjust the position and angle according to actual detection needs, thereby adapting to the detection needs in various detection scenarios and ensuring the authenticity of the final detection results.

[0081] Based on the above technical solution, the detection frame 3 is provided with a plurality of clips for fixing the reflective mark to be tested on the side facing the detection unit. The clips facilitate the fixation and placement of the reflective mark to be tested, thereby facilitating the normal progress of subsequent detection work.

[0082] Embodiment 3;

[0083] See also Fig. 9 As shown, it is further explained here that this embodiment is based on a reflective sign dynamic detection device for tunnel safety facilities proposed in the above embodiment, and a reflective sign dynamic detection method for tunnel safety facilities is proposed here. Specifically, the method includes the following steps:

[0084] Step 1, install the reflective mark to be tested on the detection frame 3 and fix it, ensuring that the surface of the mark is flat and fits tightly with the detection frame 3;

[0085] Step 2, start the environmental detection component, so that the detection plate 21 drives the detection simulation box 22 to rotate, and dynamically switches the first state and the second state of the detection frame 3 through the switching mechanism, so that the detection frame 3 is close to and away from each detection simulation box 22 in turn;

[0086] Step 3, when the detection frame 3 is in the first state, that is, when the detection frame 3 is close to the detection simulation box 22, the nozzle 6 in the corresponding detection simulation box 22 is controlled to spray the corresponding medium, and the illumination component 5 is controlled to provide light with different illumination intensities, and the detection unit is started at the same time to collect data on the appearance and reflection performance of the reflective mark;

[0087] Step 4, after completing a single test, close the nozzle 6 and the illumination assembly 5 in the current test simulation box 22, and control the test unit to stop data collection, and then continue to start the test disk 21 to rotate to switch to the next test simulation box 22, and repeat step 3 until the environmental simulation test of all test simulation boxes 22 is completed;

[0088] Step 5: Analyze and process the final collected data and form a final test report to evaluate the quality and performance of the reflective sign.

[0089] It should be noted that in the above implementation, the core problem of "environmental simulation distortion and low detection efficiency" in traditional reflective sign detection is solved through the coordinated design of the annular array environmental detection component and the dynamic detection unit. In other words, this method not only improves the comprehensiveness, accuracy and reliability of detection through the efficient coordination of various components of the equipment, but also significantly reduces the detection cost and time, providing a more advanced and effective solution for the quality control of tunnel safety facilities. This innovative detection process and method breaks through the limitations of traditional technology and has significant creativity and practicality.

[0090] In general, the device adopts a detection disk 21 equipped with dust, rain, and fog boxes (distributed in a ring array, combined with a switching mechanism to drive the detection frame 3 to dynamically approach / move away from the detection simulation box 22 (first / second state switching), to achieve cyclic loading of multiple environmental stresses. At the same time, the detection unit synchronously collects surface defect images and reflection performance data through cross-modal fusion of the visual camera 71 and the photoelectric sensor 72. Through the deep coupling of mechanical linkage adaptability and environmental simulation authenticity, the detection scene can fully cover the working conditions in the tunnel.

[0091] Furthermore, through the multi-degree-of-freedom precision adjustment of the detection adjustment mechanism, it adapts to the detection needs in various detection scenarios and ensures the authenticity and comprehensiveness of the final detection results. Through the dynamic lighting component 5 - using electrochromic materials to adjust the transmittance of the protective lampshade, it can achieve accurate simulation of different environmental lighting conditions, so that it can provide a variety of light intensities that match the actual environment, thereby avoiding detection errors caused by excessive or weak light, so as to achieve not only the true reflection of the performance of the reflective sign in various complex environments, but also the further improvement of the scientificity and comprehensiveness of the detection by optimizing the light conditions.

[0092] The above specific implementation methods further describe the purpose, technical scheme and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are schematic diagrams, which are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the present invention without substantially changing the technical content.

Claims

1. A reflective sign dynamic detection device for tunnel safety facilities, comprising a body (1) and a detection chamber (11), wherein the detection chamber (11) is located in the body (1), and a detection frame (3) and a detection unit are arranged in the detection chamber (11), characterized in that: It also includes an environmental detection component, the environmental detection component including a detection disk (21) that is rotatably arranged, and a plurality of detection simulation boxes (22) arranged in an array on the detection disk (21), the detection disk (21) being able to rotate to switch the plurality of detection simulation boxes (22) so as to approach the detection frame (3) in sequence; The detection frame (3) comprises a first state and a second state. When in the first state, the detection frame (3) is close to the corresponding detection simulation box (22); when in the second state, the detection frame (3) is away from the corresponding detection simulation box (22). A switching mechanism is also provided at the bottom of the detection frame (3), and the switching mechanism dynamically switches the first state and the second state of the detection frame (3) when the detection plate (21) rotates; The detection unit comprises a visual camera (71) and a photoelectric sensor (72), wherein the visual camera (71) and the photoelectric sensor (72) are both mounted on the side wall of the detection chamber (11) and at a position corresponding to the detection frame (3), and are used to detect the surface appearance and reflective performance of the reflective sign to be detected.

2. A reflective sign dynamic detection device for tunnel safety facilities according to claim 1, characterized in that: The switching mechanism comprises a switching disk (41) and a moving part; The switching disk (41) is coaxially attached to the bottom of the detection disk (21), and a concave arc-shaped notch (43) corresponding to a plurality of detection simulation boxes (22) is provided on the outer edge of the switching disk (41); The moving member comprises a moving block (44) connected to the bottom of the detection frame (3); a radial guide plate (45) is provided on the outside of the moving block (44); a guide groove (46) slidably matched with the moving block (44) is provided at the middle position of the radial guide plate (45); a spring (47) is connected between the end of the guide groove (46) and the moving block (44); a connecting rod (42) is further provided at the bottom of the moving block (44); and a roller rollingly connected to the outer edge of the switching disk (41) is provided at one end of the connecting rod (42) facing the concave arc-shaped notch (43).

3. The reflective sign dynamic detection device for tunnel safety facilities according to claim 1, characterized in that: A plurality of the detection simulation boxes (22) are distributed in a ring array, and the plurality of the detection simulation boxes (22) include a dust box, a rainwater box, and a cloud box, and nozzles (6) are installed inside the dust box, the rainwater box, and the cloud box at positions facing the detection frame (3), and each of the nozzles (6) is connected to a corresponding medium storage tank in the outside through a pipeline.

4. A reflective sign dynamic detection device for tunnel safety facilities according to claim 3, characterized in that: An illumination assembly (5) is provided above the interior of the dust box, the rainwater box and the mist box. Each illumination assembly (5) comprises a lamp holder (51) with an illumination lamp bead installed in the middle of the bottom, and a protective lampshade buckled under the lamp holder (51).

5. The reflective sign dynamic detection device for tunnel safety facilities according to claim 4, characterized in that: The protective lampshade has a double-layer structure and comprises a light-transmitting inner layer (521) and a light-transmitting outer layer (522), and a gap (523) exists between the light-transmitting inner layer (521) and the light-transmitting outer layer (522), and the gap (523) is filled with an electrochromic material.

6. The reflective sign dynamic detection device for tunnel safety facilities according to claim 1, characterized in that: The visual camera (71) and the photoelectric sensor (72) are integrated on the detection board (9); the visual camera (71) is located in the middle of the detection board (9), and the photoelectric sensor (72) is arranged around the visual camera (71).

7. A reflective sign dynamic detection device for tunnel safety facilities according to claim 6, characterized in that: The detection plate (9) is connected to the side wall of the detection chamber (11) via a detection adjustment mechanism; The detection adjustment mechanism comprises an adjustment cylinder (81), a movable rod (82) and a push rod (83); a cavity is formed inside the adjustment cylinder (81); one end of the movable rod (82) is connected to the detection plate (9), and the other end thereof penetrates into the internal cavity of the adjustment cylinder (81); the movable rod (82) and the adjustment cylinder (81) are spherically connected at the penetration position; the push rods (83) are symmetrically arranged in the internal cavity of the adjustment cylinder (81) and are respectively located on both sides of the movable rod (82); and the two ends of each push rod (83) are respectively spherically connected with the adjustment cylinder (81) and the movable rod (82).

8. The reflective sign dynamic detection device for tunnel safety facilities according to claim 1, characterized in that: The side of the detection frame (3) facing the detection unit is provided with a plurality of clips for fixing the reflective mark to be detected.

9. A method for dynamic detection of reflective signs for tunnel safety facilities, characterized in that: Based on a reflective sign dynamic detection device for tunnel safety facilities according to any one of claims 1 to 8, the method comprises the following steps: Step 1, mounting the reflective sign to be tested on the detection frame (3) and fixing it, ensuring that the surface of the sign is flat and fits tightly with the detection frame (3); Step 2, starting the environmental detection component, causing the detection plate (21) to drive the detection simulation box (22) to rotate, and dynamically switching the first state and the second state of the detection frame (3) through the switching mechanism, so that the detection frame (3) is moved closer to and farther away from each detection simulation box (22) in turn; Step 3, when the detection frame (3) is in the first state, that is, when the detection frame (3) is close to the detection simulation box (22), the nozzle (6) in the corresponding detection simulation box (22) is controlled to spray out the corresponding medium, and the illumination component (5) is controlled to provide light with different illumination intensities, and the detection unit is started at the same time to collect data on the appearance and reflection performance of the reflective mark; Step 4, after completing a single test, close the nozzle (6) and the illumination assembly (5) in the current test simulation box (22), and control the test unit to stop data collection, and then continue to start the test disk (21) to rotate to switch to the next test simulation box (22), and repeat step 3 until the environmental simulation test of all the test simulation boxes (22) is completed; Step 5: Analyze and process the final collected data and form a final test report to evaluate the quality and performance of the reflective sign.

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