Road marking thickness continuous detection device

Abstract

The invention discloses a road marking thickness continuous detection device, and relates to the technical field of road marking thickness detection, the road marking thickness continuous detection device comprises a road and a marking, and further comprises a camera used for mapping on the marking to form a first image acquisition surface and a second image acquisition surface area range, and the camera is arranged in an outer shell; a laser used for emitting laser to the marked line is arranged on the side portion of the camera and in the outer shell. The invention provides a highway marking line thickness continuous detection device, which can realize continuous monitoring on complicated road surfaces such as curves or uphill and downhill so as to overcome the limitation of a traditional discrete detection method, can adjust the relative position between the detection device and a marking line according to actual requirements, and is provided with a plurality of wiping parts. The problem of pollution caused by dust or blurring of the transparent window is effectively avoided, so that the image acquisition quality is ensured, the image acquisition clearness is ensured, and the reliability of detection data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of highway marking thickness detection, in particular to a highway marking thickness continuous detection device. Background Art

[0002] Highway markings are crucial to traffic safety. They regulate and guide traffic, conveying guidance, restrictions, warnings, and other traffic information to road users. They can be used in conjunction with signs or independently. Clear, standardized, and compliant road markings help drivers better understand road conditions and make informed driving decisions, thereby reducing the risk of accidents.

[0003] Road marking thickness is a key factor affecting its service life and performance. If the markings are too thin, they may not meet the expected service life and reflective, anti-skid performance requirements. This can lead to severe wear and tear over a short period of time, affecting their guiding and warning functions, posing a potential traffic safety hazard and increasing maintenance costs and frequency. If the markings are too thick, they waste materials, increase construction costs, and may affect road surface smoothness and driving comfort. To ensure the quality and performance of highway markings, the "Technical Specifications for the Construction of Highway Traffic Safety Facilities" stipulates that the thickness tolerance for thermoplastic markings is +0.50mm, -0.10mm, and must meet design requirements. Other types of markings also have corresponding thickness standards.

[0004] A search revealed prior art, including an adjustable road marking thickness detection device and method. Application number 202210776944.2, published on October 21, 2022, discloses the following technical solution: The present invention provides an adjustable road marking thickness detection device and method. The device comprises a horizontal movement device, a data storage and power distribution system, a vertical lifting device, a data acquisition and analysis system, a laser ranging system, and a road marking thickness acquisition and analysis system. Compared to conventional solutions, the device utilizes a novel laser array structure combined with high-precision laser ranging technology. By adjusting the laser angle and data acquisition frequency to meet different detection requirements, the detection range and accuracy can be adjusted. The collected distance data is then calculated, modeled, and analyzed, enabling accurate long-distance, multi-point road marking thickness measurements. The device can also be installed in a detection vehicle, enabling continuous, non-road-closing measurement of road marking thickness.

[0005] In the prior art, the following technical problems still need to be solved: How to achieve continuous monitoring of complex roads such as curves or uphill and downhill roads to overcome the limitations of traditional discrete detection methods.

[0006] How to achieve that the detection device can adjust the relative position between the detection device and the marking according to actual needs during the driving of the car, so as to obtain more accurate detection data and improve the overall adaptability and reliability of the device.

[0007] How to effectively solve the problem of dust or blurred pollution of the transparent window of the detection device caused by environmental factors (such as dust, debris, etc.) during operation to ensure the quality of image acquisition. In sections of roads with sparse green plants and more dust, as the detection device is used for a long time, a layer of dust will easily accumulate on the transparent window facing the camera over a long period of time, blocking or hindering the observation of the camera, affecting the generation of the detection image, and also requiring staff to wipe it, which is not conducive to the entire detection work.

[0008] How to enable the device to flexibly adjust its position and angle under different road environments and conditions to adapt to diverse detection needs. Summary of the Invention

[0009] The purpose of the present invention is to address the above problems and provide a continuous detection device for the thickness of highway markings, which can realize continuous monitoring of complex road surfaces such as curves or uphill and downhill slopes, so as to overcome the limitations of traditional discrete detection methods. The relative position between the detection device and the marking can be adjusted according to actual needs to obtain more accurate detection data, improve the overall adaptability and reliability of the device, and design multi-position wiping parts to effectively avoid dust or blurred pollution problems on the transparent window to ensure the quality of image acquisition, ensure clear image acquisition, and thus improve the reliability of detection data. The present invention has a flexible adjustment function and can adapt to different widths and heights of highway markings and different detection environments, thereby enhancing the versatility of the device to cope with complex and changeable highway environments.

[0010] To achieve the above object, the technical solution adopted by the present invention is: A device for continuously detecting the thickness of highway markings includes a highway and a marking, and also includes a camera for mapping a first image acquisition surface and a second image acquisition surface area on the marking. The camera is arranged in an outer shell, and a laser for emitting laser light onto the marking is arranged on the side of the camera and in the outer shell.

[0011] As a further improvement of the above solution, a first connecting piece for connecting to the rear or side of the car is provided on the top of the outer shell, and a Beidou positioning device is provided in the outer shell.

[0012] As a further improvement of the above solution, a first adjustment part for adjusting the distance between the laser and the camera is provided on the laser, and a second adjustment part for adjusting the angle of the camera itself is provided on the camera.

[0013] As a further improvement of the above solution, the first adjustment part includes a first slider arranged on the laser, the first slider is matched with the first guide rail in the outer shell, the first slider is connected to the support frame, and the support frame is connected to the telescopic shaft end of the first electric push rod.

[0014] As a further improvement of the above solution, the first wiping part includes a first support plate connected to the support frame, a first support seat and a first roller are provided on the first support plate, and a cloth cover for cleaning is provided on the outer surface of the first roller.

[0015] As a further improvement of the above solution, the second wiping part includes a support plate connected to the support frame, a tube is set on the support plate, a spring and a wiping plate body are set in the tube, and a flexible wiping strip is set on the side of the wiping plate body facing the transparent window.

[0016] As a further improvement to the above solution, the limiting block provided on the supporting plate is matched with the limiting groove on the outer shell.

[0017] As a further improvement of the above-mentioned solution, a third wiping part is provided at the lower part of the outer shell, and the third wiping part includes a second electric push rod, the telescopic shaft end of the second electric push rod is connected to the second support plate, and a second support seat and a second roller are provided on the second support plate. A cloth cover for cleaning is provided on the outer surface of the second roller, and the top of the second roller is higher than the lower surface of the transparent window.

[0018] As a further improvement of the above scheme, the first connecting member is connected to a movable adjustment part for adjusting the overall position of the outer shell, the movable adjustment part includes a mounting plate and a mounting frame, the guide rod arranged on the side of the mounting plate is matched with the screw rod at the output shaft end of the motor, the guide sleeve arranged on the other side of the mounting plate is sleeved on the guide rod, the second slider arranged on the side of the mounting frame is matched with the second guide rail arranged on the side of the mounting bracket, a carrier plate is arranged on the side of the mounting bracket, the telescopic shaft end of the fourth electric push rod arranged on the mounting bracket is connected to the side plate, driving the side plate, the mounting frame and the outer shell both perform linear motion in the vertical direction, thereby adjusting the distance between the outer shell and the marking line, driving the motor, and the screw nut drive the mounting plate and the outer shell to perform linear motion in the horizontal direction, thereby adjusting the relative position of the outer shell and the marking line.

[0019] As a further improvement of the above-mentioned solution, a shooting adjustment mechanism is provided on the side of the mounting frame, and the shooting adjustment mechanism includes an articulated support, which is hinged to the road condition camera, and the side of the articulated support is hinged to the telescopic shaft end of the fifth electric push rod. Driving the fifth electric push rod can adjust the viewing angle of the road condition camera to meet the road condition observation conditions in different usage environments.

[0020] Compared with the prior art, the beneficial effects of the present invention are: providing a continuous detection device for the thickness of highway markings, which can realize continuous monitoring of complex road surfaces such as curves or uphill and downhill slopes, so as to overcome the limitations of traditional discrete detection methods, and can adjust the relative position between the detection device and the marking according to actual needs to obtain more accurate detection data, thereby improving the overall adaptability and reliability of the device, and designing multi-position wiping parts to effectively avoid the problem of dust or blurred pollution of the transparent window to ensure the quality of image acquisition, ensure clear image acquisition, and thus improve the reliability of detection data. The present invention has a flexible adjustment function, which can adapt to different widths and heights of highway markings and different detection environments, thereby enhancing the versatility of the device to cope with complex and changeable highway environments.

[0021] A plurality of wiping parts are provided, and a cloth cover for cleaning is provided on the outer surface of the first roller for wiping the transparent window. In addition, the power source for the wiping operation and the first adjustment part use the same first electric push rod to achieve a synergistic effect. In the process of adjusting the position of the laser, the wiping operation of the transparent window is also realized, thereby avoiding obstruction of the process of the laser emitted at the laser position through the transparent window.

[0022] A movable adjustment unit is provided. A motor drives the lead screw nut, which drives the mounting plate and outer shell in horizontal linear motion. A fourth electric push rod drives the side panels, mounting bracket, and outer shell in vertical linear motion, enabling flexible adjustment of the overall position of the outer shell. This design enables the detection device to quickly and accurately adjust to the optimal detection position under varying road conditions, adapting to the detection needs of road markings of varying widths and heights, thereby improving the device's versatility and applicability. For example, when encountering lane markings of varying widths or uneven road surfaces, the movable adjustment unit ensures that the camera and laser remain aligned with the markings, ensuring proper detection.

[0023] The shooting adjustment mechanism includes an articulated support, a road condition camera and a fifth electric push rod. By driving the fifth electric push rod, the viewing angle of the road condition camera is adjusted so that it can meet the road condition observation conditions in different usage environments. During the detection process, not only can the thickness of the highway markings be detected, but the road condition information of the highway can also be observed in real time through the road condition camera, such as road damage, water accumulation, debris, etc., to provide more comprehensive highway condition data for the highway maintenance process, which is helpful to formulate a comprehensive maintenance plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0025] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above.

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the components of the internal structure of Example 1 of the present invention.

[0027] Figure 4 for Figure 3 Schematic diagram of the main structure.

[0028] Figure 5 This is a schematic diagram of the main structure of the first adjustment part of the present invention.

[0029] Figure 6 Schematic diagram of the main structure of the laser of the present invention in different positions.

[0030] Figure 7 This is a schematic diagram of the main structure of the first wiping part of the present invention.

[0031] Figure 8 This is a schematic diagram of the main structure of the second wiping part of the present invention.

[0032] Figure 9 For the present invention Figure 6 Schematic diagram of the cross-sectional structure at AA in the middle.

[0033] Figure 10 This is a schematic diagram of the main structure of the third wiping part of the present invention.

[0034] Figure 11 It is a schematic diagram of the structure of the movable adjustment part of the present invention viewed from above.

[0035] The text labels in the figure are as follows: 1. outer shell; 2. first connecting member; 3. highway; 4. marking line; 5. first image acquisition surface; 6. second image acquisition surface; 7. laser; 8. camera; 9. first adjusting part; 10. first wiping part; 11. second wiping part; 12. third wiping part; 13. second adjusting part; 14. transparent window; 15. movable adjusting part; 16. shooting adjustment mechanism; 101. limiting groove; 901. first guide rail; 902. first slider; 903. supporting frame; 904. first electric push rod; 1001. first supporting plate; 1002. first roller; 1003. first supporting seat; 1101. supporting plate; 1102. tube; 1103. spring; 1104. wiping plate body; 1 105. Flexible wiping strip; 1106. Limit block; 1201. Second roller; 1202. Second support seat; 1203. Second support plate; 1204. Second electric push rod; 1301. Third electric push rod; 1302. Connecting sleeve; 1303. Connecting plate; 1304. Connecting seat; 1501. Guide sleeve; 1502. Mounting plate; 1503. Guide rod; 1504. Mounting bracket; 1505. Motor; 1506. Screw; 1507. Second slider; 1508. Second guide rail; 1509. Carrier plate; 1510. Fourth electric push rod; 1511. Side panel; 1512. Mounting bracket; 1513. Screw nut; 1601. Fifth electric push rod; 1602. Road condition camera; 1603. Articulated support. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0037] Example 1:

[0038] like Figures 1-4 As shown, the specific solution of this embodiment is: a continuous detection device for the thickness of a highway marking, including a highway 3 and a marking 4, and also including a camera 8 for mapping the area range of a first image acquisition surface 5 and a second image acquisition surface 6 on the marking 4. The camera 8 is arranged in an outer shell 1, and a laser 7 for emitting laser light onto the marking 4 is arranged on the side of the camera 8 and in the outer shell 1.

[0039] More specifically, the laser 7 uses a near-infrared laser 7 with a wavelength of ≥808nm, emitting a line of light to project onto the surface of the road marking 4, and utilizing the characteristic of the solar spectrum having a lower energy density in the near-infrared region to reduce ambient light interference; The camera 8 is specifically a camera 8 including a narrow-band filter (matching 808 nm wavelength), which is used to capture the laser spot image, allowing only the laser wavelength to pass through and shielding light of other wavelength bands.

[0040] Within the area of ​​the first image acquisition surface 5 and the second image acquisition surface 6 captured by the camera 8, the outline of the marking line 4 on the highway 3 is shown in the image generation projection. The projection of the marking line 4 in the image captured by the camera 8 will be raised to a certain thickness. The thickness of the marking line 4 on the highway 3 can be solved by calculating the mathematical relationship. The image processing algorithm includes: image preprocessing: background elimination, capturing a "background image" without laser, and differencing it with the image with laser to remove fixed noise, median filtering: eliminating random noise, light strip separation: adaptive thresholding (for example, Otsu algorithm) to segment the laser light strip area, sub-pixel center extraction: detecting the direction of the light strip ridge based on the Hessian matrix method, and performing Taylor expansion fitting along the normal direction to achieve sub-pixel precision positioning, three-dimensional solution: three-dimensional solution, data post-processing: outlier removal: based on the 3σ principle or adjacent point continuity constraints, smoothing filtering: Savitzky-Golay filtering to eliminate high-frequency noise.

[0041] Calculating mathematical relationships and image processing algorithms are existing technologies that can be implemented by conventional technicians in the fields of mathematics and information technology processing, respectively. This application focuses on protecting the detection device part, so calculating mathematical relationships and image processing algorithms will not be described in detail.

[0042] Example 2:

[0043] Different from Example 1, based on Example 1, a first connecting member 2 for connecting to the rear or side of a car is provided on the top of the outer shell 1, and a Beidou positioning device is provided inside the outer shell 1.

[0044] More specifically, a Beidou positioning device is set in the outer shell 1 to realize Beidou positioning and record the detection position information. The first connecting part 2 is a bent plate structure, which is used to be loaded on the rear or side of the car, and can also be transferred to other mobile tools to assist in detection.

[0045] Example 3:

[0046] like Figure 5-Figure 6 As shown, the difference from Example 1 is that a first adjusting portion 9 for adjusting the distance between the laser 7 and the camera 8 is provided on the laser 7, a second adjusting portion 13 for adjusting the angle of the camera 8 itself is provided on the camera 8, and a first wiping portion 10, a second wiping portion 11, and a third wiping portion 12 are provided at the position of the transparent window 14 at the bottom of the outer shell 1.

[0047] The first adjusting part 9 includes a first slider 902 arranged on the laser 7. The first slider 902 is matched with the first guide rail 901 in the outer shell 1. The first slider 902 is connected to the support frame 903. The support frame 903 is connected to the telescopic shaft end of the first electric push rod 904.

[0048] More specifically, the first electric push rod 904 is driven to move the support frame 903 and the first slider 902, thereby changing the relative distance between the laser 7 and the camera 8 to adapt to different widths of the marking line 4 or adjust the shooting range of the camera 8 according to the detection needs, ensuring that the camera 8 can accurately focus and capture the complete image of the marking line 4, thereby improving the flexibility and adaptability of the detection.

[0049] More specifically, a second adjustment portion 13 for adjusting the angle of the camera 8 is provided on the camera 8. The second adjustment portion 13 includes a connecting sleeve 1302. The connecting sleeve 1302 is hinged to the output shaft end of the third electric push rod 1301. The connecting plate 1303 provided at one end of the camera 8 is hinged to the connecting seat 1304, driving the third electric push rod 1301. The camera 8 can be swung, which is convenient for adjusting the viewing angle of the camera 8.

[0050] Example 4:

[0051] like Figure 5 、 Figure 6 、 Figure 7 As shown, the difference from Example 3 is that the first wiping part 10 includes a first support plate 1001 connected to the support frame 903, a first support seat 1003 and a first roller 1002 are provided on the first support plate 1001, and a cloth cover for cleaning is provided on the outer surface of the first roller 1002.

[0052] More specifically, a cloth cover for cleaning is provided on the outer surface of the first roller 1002 for wiping the transparent window 14. In addition, the power source for the wiping operation adopts the first electric push rod 904 as the power source, so that one power source can complete two operations, which has a synergistic effect. In the process of adjusting the position of the laser 7, the wiping operation of the transparent window 14 is also realized, thereby avoiding obstruction of the process of the laser 7 emitting through the transparent window 14.

[0053] Example 5:

[0054] like Figure 5-Figure 8 As shown, the difference from Example 3 is that the second wiping part 11 includes a support plate 1101 connected to the support frame 903, a tube 1102 is provided on the support plate 1101, a spring 1103 and a wiping plate body 1104 are provided in the tube 1102, and a flexible wiping strip 1105 is provided on the side of the wiping plate body 1104 facing the transparent window 14.

[0055] More specifically, when driving the first electric push rod 904, during the process of adjusting the position of the laser 7, the wiping plate 1104 is always tightly fitted to the transparent window 14 under the action of the spring 1103. When the device is working, the flexible wiping strip 1105 continuously wipes the transparent window 14 to further remove impurities such as tiny particles that may be attached to the lens surface.

[0056] Example 6:

[0057] like Figure 9 As shown, the difference from Example 5 is that the limiting block 1106 provided on the supporting plate 1101 is matched with the limiting groove 101 on the outer shell 1.

[0058] More specifically, the arrangement of the limiting block 1106 and the limiting groove 101 facilitates the overall linear motion of the second wiping portion 11 and plays a guiding role.

[0059] Example 7:

[0060] like Figure 10 As shown, the difference from Example 1 is that a third wiping part 12 is provided at the lower part of the outer shell 1, and the third wiping part 12 includes a second electric push rod 1204, and the telescopic shaft end of the second electric push rod 1204 is connected to the second support plate 1203, and a second support seat 1202 and a second roller 1201 are provided on the second support plate 1203, and a cloth cover for cleaning is provided on the outer surface of the second roller 1201, and the top of the second roller 1201 is higher than the lower surface of the transparent window 14.

[0061] More specifically, the second electric push rod 1204 is driven, and a cloth cover for cleaning is provided on the outer surface of the second roller 1201 to wipe the transparent window 14, effectively avoiding the transparent window 14 from being covered with dust or blurred contamination, so as to ensure the quality of image acquisition and ensure the clarity of image acquisition, thereby improving the reliability of detection data.

[0062] Example 8:

[0063] like Figure 11As shown, the difference from Example 2 is that the first connecting member 2 is connected to the movable adjustment part 15 for adjusting the overall position of the outer shell 1, and the movable adjustment part 15 includes a mounting plate 1502 and a mounting bracket 1504. The guide rod 1503 provided on the side of the mounting plate 1502 is matched with the screw rod 1506 at the output shaft end of the motor 1505. The guide sleeve 1501 provided on the other side of the mounting plate 1502 is sleeved on the guide rod 1503. The second slider 1507 provided on the side of the mounting bracket 1504 is connected to the second guide rail provided on the side of the mounting bracket 1512. 1508 is matched with the setting, and a carrier plate 1509 is set on the side of the mounting bracket 1512. The telescopic shaft end of the fourth electric push rod 1510 set on the mounting bracket 1512 is connected to the side plate 1511, driving the side plate 1511, the mounting frame 1504 and the outer shell 1 both make linear motion in the vertical direction, thereby adjusting the distance between the outer shell 1 and the marking line 4, driving the motor 1505, and the screw nut 1513 drive the mounting plate 1502 and the outer shell 1 to make linear motion in the horizontal direction, thereby adjusting the relative position of the outer shell 1 and the marking line 4.

[0064] A shooting adjustment mechanism 16 is set on the side of the mounting frame 1504, and the shooting adjustment mechanism 16 includes a hinged support 1603, which is hinged to the road condition camera 1602. The side of the hinged support 1603 is hinged to the telescopic shaft end of the fifth electric push rod 1601. Driving the fifth electric push rod 1601 can adjust the viewing angle of the road condition camera 1602 to meet the road condition observation conditions in different usage environments.

[0065] More specifically, motor 1505 drives screw nut 1513 to cause mounting plate 1502 and outer shell 1 to perform linear motion in the horizontal direction, while fourth electric push rod 1510 drives side plate 1511, mounting bracket 1504, and outer shell 1 to perform linear motion in the vertical direction, thereby achieving flexible adjustment of the overall position of outer shell 1. This design enables the detection device to be quickly and accurately adjusted to the optimal detection position under different road 3 environments, enabling the device to adapt to the detection requirements of markings 4 of different widths and heights, thereby improving the device's versatility and applicability. For example, when encountering markings 4 of varying lane widths or uneven road surfaces, the movable adjustment unit 15 can ensure that camera 8 and laser 7 are always aligned with the markings 4, ensuring the normal operation of the detection work.

[0066] The shooting adjustment mechanism 16 includes an articulated support 1603, a road condition camera 1602 and a fifth electric push rod 1601. By driving the fifth electric push rod 1601, the viewing angle of the road condition camera 1602 is adjusted so that it can meet the road condition observation conditions under different usage environments. During the detection process, not only can the thickness of the marking 4 be detected, but the road condition information of the highway 3, such as road damage, water accumulation, debris, etc., can also be observed in real time through the road condition camera 1602, thereby providing more comprehensive condition data for the maintenance process of the highway 3 and helping to formulate a comprehensive maintenance plan.

[0067] It should be noted that, in this article, the terms include, comprise or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used herein to illustrate the principles and implementation methods of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above is only a preferred embodiment of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should all be regarded as the scope of protection of the present invention.

Claims

1. A device for continuously detecting the thickness of a highway marking, comprising a highway (3) and a marking (4), characterized in that: The invention also includes a camera (8) for mapping the first image acquisition surface (5) and the second image acquisition surface (6) on the marking line (4), wherein the camera (8) is arranged in the outer shell (1), and a laser (7) for emitting laser light onto the marking line (4) is arranged on the side of the camera (8) and in the outer shell (1).

2. A continuous detection device for thickness of road markings according to claim 1, characterized in that: A first connecting member (2) is provided on the top of the outer shell (1), and a Beidou positioning device is provided inside the outer shell (1).

3. A continuous detection device for thickness of road markings according to claim 1, characterized in that: The laser (7) is provided with a first adjustment portion (9) for adjusting the distance between the laser (7) and the camera (8), and the camera (8) is provided with a second adjustment portion (13) for adjusting the angle of the camera (8) itself.

4. A continuous detection device for thickness of road markings according to claim 3, characterized in that: The first adjusting portion (9) comprises a first slider (902) arranged on the laser (7), the first slider (902) being matched with a first guide rail (901) in the outer shell (1), the first slider (902) being connected to a support frame (903), the support frame (903) being connected to a telescopic shaft end of a first electric push rod (904), and a first wiping portion (10), a second wiping portion (11), and a third wiping portion (12) being arranged at the position of a transparent window (14) at the bottom of the outer shell (1).

5. A device for continuous detection of road marking thickness according to claim 4, characterized in that: The first wiping portion (10) comprises a first support plate (1001) connected to a support frame (903), a first support seat (1003) and a first roller (1002) being provided on the first support plate (1001), and a cloth cover for cleaning being provided on the outer surface of the first roller (1002).

6. A device for continuous detection of road marking thickness according to claim 4, characterized in that: The second wiping portion (11) comprises a supporting plate (1101) connected to the supporting frame (903); a tube (1102) is provided on the supporting plate (1101); a spring (1103) and a wiping plate body (1104) are provided in the tube (1102); and a flexible wiping strip (1105) is provided on the side of the wiping plate body (1104) facing the transparent window (14).

7. A device for continuous detection of road marking thickness according to claim 5, characterized in that: The limiting block (1106) provided on the supporting plate (1101) is matched with the limiting groove (101) on the outer shell (1).

8. The device for continuous detection of road marking thickness according to claim 1, characterized in that: A third wiping portion (12) is provided at the lower portion of the outer shell (1), the third wiping portion (12) comprising a second electric push rod (1204), a telescopic shaft end of the second electric push rod (1204) being connected to a second support plate (1203), a second support seat (1202) and a second roller (1201) being provided on the second support plate (1203), a cloth cover for cleaning being provided on the outer surface of the second roller (1201), and a top of the second roller (1201) being higher than a lower surface of the transparent window (14).

9. A device for continuous detection of road marking thickness according to claim 2, characterized in that: The first connecting member (2) is connected to a movable adjustment part (15) for adjusting the overall position of the outer shell (1), and the movable adjustment part (15) includes a mounting plate (1502) and a mounting frame (1504). A guide rod (1503) provided on the side of the mounting plate (1502) is matched with a screw rod (1506) at the output shaft end of the motor (1505). A guide sleeve (1501) provided on the other side of the mounting plate (1502) is sleeved on the guide rod (1503). A second slider (1507) provided on the side of the mounting frame (1504) is matched with a second guide rail (1508) provided on the side of the mounting bracket (1512). A carrier plate (1509) is provided on the side of the mounting bracket (1512). The telescopic shaft end of a fourth electric push rod (1510) provided on the mounting bracket (1512) is connected to the side plate (1511).

10. A device for continuous detection of road marking thickness according to claim 9, characterized in that: A shooting adjustment mechanism (16) is provided on the side of the mounting frame (1504), and the shooting adjustment mechanism (16) includes an articulated support (1603), the articulated support (1603) is articulated to the road condition camera (1602), and the side of the articulated support (1603) is articulated to the telescopic shaft end of the fifth electric push rod (1601).

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