Road surface data acquisition and detection equipment and method in inspection and maintenance process

Abstract

The invention relates to the technical field of road surface data acquisition, in particular to road surface data acquisition and detection equipment and method in the inspection and maintenance process, and the equipment comprises a vehicle frame, the vehicle frame is sequentially provided with a humidifying assembly, a heating assembly, an identification assembly and a depth measurement assembly, the humidifying assembly can spray mist and humidify a road surface at an inclined angle, and the heating assembly can heat the vehicle frame; the heating assembly is a microwave heater, the heating assembly can conduct microwave heating on the humidified road surface, due to the sensitivity of water to microwaves, the dry and wet surfaces have different temperatures, and the heating assembly can conduct microwave heating on the wetted road surface. According to the method, the problem that the recognition rate needs to be improved due to the fact that the color of an existing road surface is single, the color comparison of obtained pictures is not obvious enough and the defects of the road surface are easily ignored when pictures are collected through a single high-speed camera in the prior art can be solved, the recognition accuracy of road condition information collection in the prior art is further improved, and the recognition efficiency is improved. And the depth of the rut can be accurately measured.

Description

Technical Field

[0001] The present invention relates to the technical field of road surface data collection, and in particular to road surface data collection and detection equipment and methods during inspection and maintenance. Background Art

[0002] As traffic pressure continues to grow, the importance of road maintenance becomes increasingly prominent. After a long period of use, roads will have some defects, such as rutting, cracks, and potholes. Road surface data collection equipment needs to collect the above defects. Through in-depth analysis of the detection data (rutting depth, crack width), etc., potential safety hazards on the road can be discovered in time to prevent traffic accidents. These data can also provide an important basis for relevant decisions of road maintenance management departments, which helps to achieve reasonable resource allocation and optimization of maintenance work.

[0003] In the prior art, there is a CICS road condition detection vehicle, which is based on advanced sensors and data processing systems, can quickly and accurately detect various road indicators, continuously capture road images through high-speed cameras, and then use computer image automatic recognition technology to accurately analyze road conditions. Although it has a high recognition accuracy, it is necessary to further increase the recognition accuracy and perform in-depth measurement when facing higher requirements on road surfaces.

[0004] Because the CICS road condition detection vehicle uses a single image recognition, and the road surface color is single, the color comparison is not strong enough, and some smaller road condition problems are easily overlooked. The present invention proposes a road surface data collection and detection device and method during the inspection and maintenance process, which can further increase the recognition accuracy of road condition information collection in the prior art and accurately measure the depth of the rut. Summary of the invention

[0005] The purpose of the present invention is to provide a road surface data collection and detection device and method during the inspection and maintenance process, which can overcome the problem that "because the existing road surface has a single color, when the image is collected by a single high-speed camera, the color comparison of the acquired image is not obvious enough, and the road surface defects are easily ignored, resulting in the recognition rate needs to be improved", further increase the recognition accuracy of road condition information collection in the existing technology, and can accurately measure the depth of rutting.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a road surface data collection and detection device in the process of inspection and maintenance, comprising a frame, on which a humidification component, a heating component, an identification component and a depth measurement component are sequentially arranged; The humidification component can spray mist and humidify the road surface at an oblique angle, so that the defects of the road surface and the road surface have a relatively dry and wet surface; The heating component is a microwave heater, which can perform microwave heating on the humidified road surface. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. The recognition components include a thermal imaging camera and a high-speed camera. The thermal imaging camera and the high-speed camera face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear as obvious color differences on the thermal imaging camera, and cooperate with the image recognition of the high-speed camera to increase the recognition accuracy. The depth measuring assembly includes an outer frame, a slider is slidably connected to the inside of the outer frame, an electric push rod is fixedly connected to the inner side of the slider, the bottom end of the electric push rod is fixedly connected to an outer cylinder, the inner side of the outer cylinder is slidably connected to a slide plate, a spring is arranged on the inner side of the outer cylinder, the two ends of the spring are respectively fixedly connected to the inner side of the top end of the outer cylinder and the top end of the slide plate, the bottom end of the slide plate is fixedly connected to an inner rod, the bottom end of the inner rod is rotatably connected to a roller, the roller is moved back and forth in the rut, and the rut depth is detected by obtaining the up and down fluctuation of the roller.

[0007] When the present invention is used, the frame is moved on the road surface by an external tractor, so that the humidification component works. The humidification component can spray mist and humidify the road surface at an oblique angle. Because the road surface is missing or uneven due to defects, the road surface defects and the road surface will produce relatively dry and wet surfaces during spray humidification. For example, when facing crack defects, the spray will not fall on the cracks, so the cracks and the road surface will produce relatively dry and wet surfaces. For example, when facing a rut, there are often ridges, concave bevels and rut bottoms. When the humidification component sprays mist and humidifies the road surface at an oblique angle, the ridges exist. The obstruction of the ridges will cause the concave bevels in the concave to have a back-ridge phenomenon. The back-ridge cannot adhere to enough mist, and the rut and the road surface will still have a relatively dry and wet surface. At the same time, because there are two raised high positions in the rut, there will be two back ridges, which can be used to determine whether the defects at that location are caused by the rut; After the relative dry and wet surfaces appear, the frame moves, driving the heating component to move to the humidified road surface. The heating component can perform microwave heating on the humidified road surface. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. The frame moves again, driving the identification component to move to the heated road surface. The thermal imaging camera and high-speed camera in the identification component are directed toward the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear on the thermal imaging camera as obvious color differences, and combined with the image recognition of the high-speed camera in the existing technology, the accuracy of identifying road surface defects is greatly increased.

[0008] As a preferred road surface data acquisition and detection device in the inspection and maintenance process of the present invention, a second motor is fixedly connected to the outer side of the outer frame, a screw is fixedly connected to the end of the main shaft of the second motor, the screw is rotatably connected to the inner side of the outer frame, the outer side of the screw is spirally connected to the inner side of the slider, the inner side of the outer frame is also fixedly connected to a limit rod, and the outer side of the limit rod is slidably connected to the inner side of the slider.

[0009] As a preferred road surface data acquisition and detection device in the inspection and maintenance process of the present invention, a potentiometer is fixedly connected to the inner side of the outer cylinder, and a synchronization block is fixedly connected to the middle position of the edge of the slide plate. The synchronization block slides on the surface of the potentiometer, and the up and down fluctuation of the synchronization block and the roller in the detection area is obtained through the potentiometer.

[0010] Under the above settings, after the rut is identified, the rut depth can be detected by the depth measuring component. The second motor rotates, driving the screw to rotate, so that the slider moves to the rut area, and the electric push rod moves downward, so that the roller contacts the ground and the slide plate is in the middle position inside the outer cylinder. The potentiometer starts to obtain the slide plate position in real time, and the roller moves back and forth in the rut. During the whole movement process, the up and down fluctuation of the roller is obtained by the potentiometer and the synchronization block to detect the rut depth. The deformation stroke of the spring is the length of the entire outer cylinder, so that the roller can always be low to the road surface. As a preferred road surface data collection and detection device in the inspection and maintenance process of the present invention, the humidification component includes a support frame, a hydraulic rod is fixedly connected to the inner side of the top end of the support frame, a slide is fixedly connected to the bottom end of the hydraulic rod, the slide is slidably connected to the inner side of the frame, a single wind hood head and a single nozzle are a group, and multiple groups of wind hood heads and nozzles are fixedly connected to the bottom end of the slide.

[0011] As a road surface data collection and detection device in the inspection and maintenance process of the present invention, preferably, the nozzle is tilted and the wind direction of the wind hood head is horizontal. By changing the wind speed of the wind hood head, the spray angle can be changed to adapt to road surfaces with different standard requirements. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the rutting is.

[0012] Under the above settings, when the mist sprayed by the humidifying component tends to flow horizontally, the longer the length of the back bank is, the easier it is to be identified by the thermal imaging camera, because the spray sprayed by the nozzle and the airflow sprayed by the wind hood head are both vectors, and the spray angle can be changed by changing the wind speed of the wind hood head to adapt to the road surface with different standards. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the rut. The humidifying component can be adjusted in height to cooperate with the change of the spray angle. When the spray angle D is closer to the horizontal, the height of the humidifying component needs to be appropriately lowered to ensure that the spray can stick to the road surface; wherein, the wind hood head is the air outlet, and the airflow generated by the fan cylinder is released through the wind hood head, and the hollow structure reduces the obstruction of the wind hood head to the spray; As a preferred road surface data collection and detection device in the inspection and maintenance process of the present invention, each group of wind hood heads and nozzles corresponds to a fan cylinder and a water storage cylinder, the top of the sliding seat is fixedly connected to the fan cylinder, the fan cylinder has a built-in fan, the inner side of the sliding seat is fixedly connected to an air duct, and the two ends of the air duct are respectively connected to the output end of the fan cylinder and the input end of the wind hood head.

[0013] As a preferred road surface data collection and detection device in the inspection and maintenance process of the present invention, the water storage cylinder is fixed at the top of the slide seat, the top of the water storage cylinder is connected to a water injection cap, the output end of the water storage cylinder is connected to a nozzle, the end of the nozzle is connected to the input end of the nozzle, the nozzle is interrupted and connected through a water pump, and when the water pump is working, the nozzle sprays.

[0014] As a preferred road surface data collection and detection device in the inspection and maintenance process of the present invention, the identification component includes a connecting seat fixed on the frame, the thermal imaging camera and the high-speed camera are fixed on the inner side of the bottom end of the connecting seat, and the inner side of the bottom end of the connecting seat is horizontally slidably connected to two baffles, and the inner side of the bottom end of the connecting seat is rotatably connected to a first motor through a rotating shaft, and a rubber ring is fixedly connected to the outer side of the output end of the first motor, and the rubber ring is fitted with the baffle. When the first motor rotates, it can drive the left and right baffles to approach or separate from each other. When the two baffles are close, it is used to overcome the influence of microwaves generated by the microwave heater on the thermal imaging camera and the high-speed camera. When the two baffles are separated, the two baffles work when they are close.

[0015] The road surface data collection and detection method during the inspection and maintenance process includes the following steps: Step 1: The frame is towed by an external tractor to move on the road; Step 2: Make the humidification component work. The humidification component can spray mist and humidify the road surface at an oblique angle. Because the defects cause the road surface to be missing or uneven, during spray humidification, the defects of the road surface and the road surface will produce relatively dry and wet surfaces; Step 3: The movement of the frame drives the heating component to move to the humidified road surface. The heating component can perform microwave heating on the humidified road surface. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. Step 4: The vehicle frame moves again, driving the recognition component to move to the heated road surface. The thermal imaging camera and high-speed camera in the recognition component face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear as obvious color differences on the thermal imaging camera, and cooperate with the image recognition of the high-speed camera to increase the recognition accuracy of road surface defects.

[0016] As a preferred method for collecting and detecting road surface data during the inspection and maintenance process of the present invention, the steps also include: Step 5: If there are ruts, the depth measuring component detects the depth of the ruts, the second motor rotates, driving the screw to rotate, so that the slider moves to the rut area, the electric push rod moves downward, the roller contacts the ground, and the slide plate is in the middle position inside the outer tube, the potentiometer starts to obtain the slide plate position in real time, and the roller moves back and forth in the rut, and the up and down fluctuation of the roller is obtained through the potentiometer and the synchronization block to detect the depth of the rut.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The road data collection and detection equipment in the inspection and maintenance process, when the present invention is used, the frame is moved on the road surface through an external tractor to make the humidifying component work, and the humidifying component can spray mist and humidify the road surface at an oblique angle. Because the road surface is missing or uneven due to defects, during spray humidification, the road surface defects and the road surface will produce relatively dry and wet surfaces. For example, when facing crack defects, the spray will not fall on the cracks, so the cracks and the road surface will produce relatively dry and wet surfaces. For example, when facing ruts, the ruts often have raised high positions, sunken bevels and rut bottoms. When the humidifying component sprays mist and humidifies the road surface at an oblique angle, the raised high position exists. The obstruction of the raised high position will cause the sunken bevel in the depression to have a back-reef phenomenon, and the back-reef cannot adhere to enough mist, which will still cause The ruts and the road surface will produce relative dry and wet surfaces. At the same time, because there are two high raised positions in the ruts, two back ridges will appear, so it can be judged whether the defects at this location are caused by the ruts. After the relative dry and wet surfaces appear, the frame moves to drive the heating component to move to the humidified road surface. The heating component can perform microwave heating on the humidified road surface. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. The frame moves again, driving the identification component to move to the heated road surface. The thermal imaging camera and high-speed camera in the identification component face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear on the thermal imaging camera with obvious color difference, and cooperate with the image recognition of the high-speed camera in the existing technology, thereby greatly increasing the recognition accuracy of road surface defects.

[0018] 2. The road surface data collection and detection equipment in the inspection and maintenance process can detect the depth of the rut through the depth measuring component after identifying the rut. The second motor rotates, driving the screw to rotate, so that the slider moves to the rut area, and the electric push rod moves downward, so that the roller contacts the ground and the slide plate is in the middle position inside the outer cylinder. The potentiometer starts to obtain the slide plate position in real time and allows the roller to move back and forth in the rut. During the entire movement process, the up and down fluctuation of the roller is obtained through the potentiometer and the synchronization block to detect the depth of the rut. Among them, the deformation stroke of the spring is the length of the entire outer cylinder, so that the roller can always be low to the road surface.

[0019] 3. In the road data collection and detection equipment during the inspection and maintenance process, when the mist sprayed by the humidifying component tends to flow horizontally, the longer the length of the back bank is, the easier it is to be identified by the thermal imaging camera, because the spray sprayed by the nozzle and the airflow sprayed by the wind hood head are both vectors, and the spray angle can be changed by changing the air outlet speed of the wind hood head to adapt to road surfaces with different standards. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the ruts. The humidifying component can be adjusted in height to cooperate with the change of the spray angle. When the spray angle D is closer to the horizontal, the height of the humidifying component needs to be appropriately lowered to ensure that the spray can stick to the road surface. Among them, the wind hood head is the air outlet, and the airflow generated by the fan cylinder is released through the wind hood head. The hollow structure reduces the obstruction of the wind hood head to the spray. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the problems existing on the existing road surface after long-term use; Figure 2 for Figure 1 Schematic diagram at the middle section AA'; Figure 3 It is a schematic diagram of the process of data collection and detection in the present invention; Figure 4 It is a schematic front view of the whole frame of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in FIG. Figure 6 For the present invention Figure 4 The enlarged structural diagram at C in FIG. Figure 7 This is a schematic diagram of the installation structure of the nozzle in the humidification assembly of the present invention; Figure 8 It is a schematic diagram of the flow structure of the spray generated by the nozzle in the humidification assembly of the present invention; Fig. 9 This is a schematic diagram of the appearance structure of the connecting seat in the identification component of the present invention; Fig.10 This is a schematic diagram of the appearance structure of the humidification component of the present invention; Fig.11 It is a structural schematic diagram of the air pipe and the nozzle in the humidification component of the present invention; Fig.12 It is a schematic diagram of the screw structure in the depth measuring assembly of the present invention.

[0021] In the figure: 1, road surface; 2, crack; 3, rut; 31, raised high position; 32, sunken bevel; 33, bottom of rut; 4, vehicle frame; 5. Humidification assembly; 51. Support frame; 52. Hydraulic rod; 53. Sliding seat; 54. Wind hood head; 55. Sprinkler; 56. Water storage cylinder; 57. Water injection cap; 58. Water pump; 59. Fan cylinder; 510. Spray pipe; 511. Air duct; 6. Heating components; 7. Identification component; 71. Connecting seat; 72. Thermal imaging camera; 73. High-speed camera; 74. First motor; 75. Baffle; 8. Depth measuring assembly; 81. Outer frame; 82. Sliding block; 83. Screw rod; 84. Limit rod; 85. Electric push rod; 86. Outer cylinder; 87. Inner rod; 88. Roller; 89. Spring; 810. Slide plate; 811. Synchronous block; 812. Potentiometer; 813. Second motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1, please refer to Figure 1-Figure 12 , the present invention provides a technical solution: The road surface data collection and detection equipment in the process of inspection and maintenance comprises a frame 4, on which a humidification component 5, a heating component 6, an identification component 7 and a depth measurement component 8 are sequentially arranged; The humidifying component 5 can spray mist and humidify the road surface at an oblique angle, so that the defects of the road surface 1 and the road surface 1 have relatively dry and wet surfaces; The heating component 6 is a microwave heater, and the heating component 6 can perform microwave heating on the humidified road surface 1. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures; The recognition component 7 includes a thermal imaging camera 72 and a high-speed camera 73. The thermal imaging camera 72 and the high-speed camera 73 face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear as obvious color differences on the thermal imaging camera 72, and cooperate with the image recognition of the high-speed camera 73 to increase the recognition accuracy. The depth measuring assembly 8 includes an outer frame 81, the inner part of the outer frame 81 is slidably connected to a slider 82, the inner side of the slider 82 is fixedly connected to an electric push rod 85, the bottom end of the electric push rod 85 is fixedly connected to an outer cylinder 86, the inner side of the outer cylinder 86 is slidably connected to a slide plate 810, a spring 89 is provided on the inner side of the outer cylinder 86, the two ends of the spring 89 are respectively fixedly connected to the inner side of the top end of the outer cylinder 86 and the top end of the slide plate 810, the bottom end of the slide plate 810 is fixedly connected to an inner rod 87, the bottom end of the inner rod 87 is rotatably connected to a roller 88, so that the roller 88 moves back and forth at the rut 3, and the depth of the rut 3 is detected by obtaining the up and down fluctuation of the roller 88.

[0024] When the present invention is used, the frame 4 is moved on the road surface 1 by an external tractor, so that the humidifying component 5 works. The humidifying component 5 can spray mist and humidify the road surface at an oblique angle. Because the road surface is missing or uneven due to defects, during spray humidification, the defect of the road surface 1 and the road surface 1 will produce a relative dry and wet surface. For example, when facing the defect of crack 2, the spray will not fall on the crack 2, so the crack 2 and the road surface will produce a relative dry and wet surface. For example, when facing the rut 3, the rut 3 often has a raised high position 31, a sunken oblique side 32 and a rut bottom 33. When the humidifying component 5 sprays mist and humidifies the road surface at an oblique angle, the raised high position 31 exists. The obstruction of the raised high position 31 will cause the sunken oblique side 32 in the depression to have a back-recess phenomenon. The back-recess cannot adhere to enough mist, and the rut 3 and the road surface will still have a relatively dry and wet surface. At the same time, because there are two raised high positions 31 in the rut 3, there will be two back ridges, which can be used to determine whether the defect at this location is caused by the rut 3; After the relative dry and wet surfaces appear, the frame 4 moves and drives the heating component 6 to move to the humidified road surface 1. The heating component 6 can perform microwave heating on the humidified road surface 1. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. The frame 4 moves again and drives the identification component 7 to move to the heated road surface 1. The thermal imaging camera 72 and the high-speed camera 73 in the identification component 7 face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear on the thermal imaging camera 72 as obvious color differences, and cooperate with the image recognition of the high-speed camera 73 in the prior art, thereby greatly increasing the recognition accuracy of defects in the road surface 1.

[0025] Specifically, the outer side of the outer frame 81 is fixedly connected to a second motor 813, the end of the main shaft of the second motor 813 is fixedly connected to a screw 83, the screw 83 is rotatably connected to the inner side of the outer frame 81, the outer side of the screw 83 is spirally connected to the inner side of the slider 82, and the inner side of the outer frame 81 is also fixedly connected to a limiting rod 84, and the outer side of the limiting rod 84 is slidably connected to the inner side of the slider 82.

[0026] Specifically, a potentiometer 812 is fixedly connected to the inner side of the outer cylinder 86, and a synchronization block 811 is fixedly connected to the middle position of the edge of the slide plate 810. The synchronization block 811 slides on the surface of the potentiometer 812, and the up and down fluctuation of the synchronization block 811 and the roller 88 in the detection area is obtained through the potentiometer 812.

[0027] Under the above settings, after the rut 3 is identified, the depth of the rut 3 can be detected by the depth measuring component 8, the second motor 813 rotates, driving the screw 83 to rotate, so that the slider 82 moves to the rut area, the electric push rod 85 moves downward, so that the roller 88 contacts the ground, and the slide plate 810 is in the middle position inside the outer cylinder 86, the potentiometer 812 starts to obtain the position of the slide plate 810 in real time, and the roller 88 moves back and forth at the rut 3. During the whole movement process, the up and down fluctuation of the roller 88 is obtained by the potentiometer 812 and the synchronization block 811 to detect the depth of the rut 3, wherein the deformation stroke of the spring 89 is the length of the entire outer cylinder 86, so that the roller 88 can always be below the road surface 1; Specifically, the humidification assembly 5 includes a support frame 51, a hydraulic rod 52 is fixedly connected to the inner side of the top end of the support frame 51, a slide 53 is fixedly connected to the bottom end of the hydraulic rod 52, the slide 53 is slidably connected to the inner side of the frame 4, a single wind hood head 54 and a single nozzle 55 are a group, and a plurality of groups of wind hood heads 54 and nozzles 55 are fixedly connected to the bottom end of the slide 53.

[0028] Specifically, each set of wind hood heads 54 and nozzles 55 corresponds to a fan cylinder 59 and a water storage cylinder 56. The top of the slide seat 53 is fixedly connected to the fan cylinder 59, and the fan cylinder 59 has a built-in fan. The inner side of the slide seat 53 is fixedly connected to an air duct 511, and the two ends of the air duct 511 are respectively connected to the output end of the fan cylinder 59 and the input end of the wind hood head 54.

[0029] Specifically, the water storage cylinder 56 is fixed at the top of the slide seat 53, and the top of the water storage cylinder 56 is connected to a water injection cap 57. The output end of the water storage cylinder 56 is connected to a nozzle 510, and the end of the nozzle 510 is connected to the input end of the nozzle 55. The nozzle 510 is interrupted and connected through a water pump 58. When the water pump 58 is working, the nozzle 55 sprays.

[0030] Specifically, the identification component 7 includes a connecting seat 71 fixed on the frame 4, a thermal imaging camera 72 and a high-speed camera 73 are fixed on the inner side of the bottom end of the connecting seat 71, and two baffles 75 are horizontally slidably connected to the inner side of the bottom end of the connecting seat 71. The inner side of the bottom end of the connecting seat 71 is rotatably connected to a first motor 74 through a rotating shaft, and a rubber ring is fixedly connected to the outer side of the output end of the first motor 74, and the rubber ring is fitted with the baffle 75. When the first motor 74 rotates, it can drive the left and right baffles 75 to approach or separate from each other. When the two baffles 75 are close, they are used to overcome the influence of microwaves generated by the microwave heater on the thermal imaging camera 72 and the high-speed camera 73. When the two baffles 75 are separated, the two baffles 75 work when they are close.

[0031] Example 2: This example is a further improvement of Example 1. Figure 1-Figure 12 The nozzle 55 is tilted, and the wind direction of the wind shield head 54 is horizontal. By changing the wind speed of the wind shield head 54, the spray angle can be changed to adapt to road surfaces with different standards. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the rut 3.

[0032] Under the above setting, when the mist sprayed by the humidifying component 5 tends to flow horizontally, the longer the length of the back bank is, the easier it is to be identified by the thermal imaging camera 72, because the spray sprayed by the nozzle 55 and the airflow sprayed by the wind hood head 54 are both vectors, and the spray angle can be changed by changing the wind speed of the wind hood head 54 to adapt to road surfaces with different standards. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the rut 3. The humidifying component 5 can be adjusted in height to cooperate with the change of the spray angle. When the spray angle D is closer to the horizontal, the height of the humidifying component 5 needs to be appropriately lowered to ensure that the spray can stick to the road surface 1; wherein, the wind hood head 54 is an air outlet, and the airflow generated by the fan barrel 59 is released through the wind hood head 54. The hollow structure reduces the obstruction of the wind hood head 54 to the spray. Its structure can refer to the head for a bladeless fan and the head in a bladeless fan with application number 201610878278.8.

[0033] The present invention also discloses a road surface data collection and detection method during the inspection and maintenance process, the steps of which are: Step 1: The vehicle frame 4 is towed by an external tractor to move on the road surface 1; Step 2: The humidifying component 5 is operated. The humidifying component 5 can spray mist and humidify the road surface at an oblique angle. Because the defective part causes the road surface to be missing or uneven, during the spray humidification, the defective part of the road surface 1 and the road surface 1 will produce a relatively dry and wet surface; Step 3: The frame 4 moves to drive the heating component 6 to move to the humidified road surface 1. The heating component 6 can perform microwave heating on the humidified road surface 1. Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures; Step 4: The vehicle frame 4 moves again, driving the identification component 7 to move to the heated road surface 1. The thermal imaging camera 72 and the high-speed camera 73 in the identification component 7 face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear as obvious color differences on the thermal imaging camera 72, and cooperate with the image recognition of the high-speed camera 73 to increase the recognition accuracy of defects in the road surface 1.

[0034] As a preferred method for collecting and detecting road surface data during the inspection and maintenance process of the present invention, the steps also include: Step 5: If there is rut ​​3, the depth measuring component detects the depth of the rut, the second motor 813 rotates, driving the screw 83 to rotate, so that the slider 82 moves to the rut area, the electric push rod 85 moves downward, so that the roller 88 contacts the ground, and the slide plate 810 is in the middle position inside the outer cylinder 86, the potentiometer 812 starts to obtain the position of the slide plate 810 in real time, and allows the roller 88 to move back and forth at the rut 3, and the up and down fluctuation of the roller 88 is obtained by the potentiometer 812 and the synchronization block 811 to realize the detection of the depth of the rut 3.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road surface data collection and detection device during inspection and maintenance, comprising a frame (4), characterized in that: The frame (4) is provided with a humidification component (5), a heating component (6), an identification component (7) and a depth measurement component (8) in sequence; The humidifying component (5) is capable of spraying mist and humidifying the road surface at an oblique angle, thereby creating relatively dry and wet surfaces at the defective part of the road surface (1) and the road surface (1); The heating component (6) is a microwave heater. The heating component (6) can perform microwave heating on the humidified road surface (1). Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. The recognition component (7) includes a thermal imaging camera (72) and a high-speed camera (73). The thermal imaging camera (72) and the high-speed camera (73) face the road surface and capture road surface information. Different temperatures between the dry and wet surfaces are displayed as obvious color differences on the thermal imaging camera (72). In combination with the image recognition of the high-speed camera (73), the recognition accuracy is increased. The depth measuring assembly (8) comprises an outer frame (81), the inner part of the outer frame (81) is slidably connected to a slider (82), the inner side of the slider (82) is fixedly connected to an electric push rod (85), the bottom end of the electric push rod (85) is fixedly connected to an outer cylinder (86), the inner side of the outer cylinder (86) is slidably connected to a slide plate (810), a spring (89) is arranged on the inner side of the outer cylinder (86), the two ends of the spring (89) are respectively fixedly connected to the inner side of the top end of the outer cylinder (86) and the top end of the slide plate (810), the bottom end of the slide plate (810) is fixedly connected to an inner rod (87), the bottom end of the inner rod (87) is rotatably connected to a roller (88), so that the roller (88) moves forward and backward at the rut (3), and the depth of the rut (3) is detected by obtaining the up and down fluctuation amount of the roller (88).

2. The road surface data acquisition and detection equipment in the inspection and maintenance process according to claim 1 is characterized in that: A second motor (813) is fixedly connected to the outer side of the outer frame (81), a screw rod (83) is fixedly connected to the end of the main shaft of the second motor (813), the screw rod (83) is rotatably connected to the inner side of the outer frame (81), the outer side of the screw rod (83) is spirally connected to the inner side of the slider (82), the inner side of the outer frame (81) is also fixedly connected to a limit rod (84), the outer side of the limit rod (84) is slidably connected to the inner side of the slider (82).

3. The road surface data acquisition and detection equipment in the inspection and maintenance process according to claim 2 is characterized in that: A potentiometer (812) is fixedly connected to the inner side of the outer cylinder (86), a synchronization block (811) is fixedly connected to the middle position of the edge of the slide plate (810), the synchronization block (811) slides on the surface of the potentiometer (812), and the up and down fluctuation of the synchronization block (811) and the roller (88) in the detection area is obtained through the potentiometer (812).

4. The road surface data acquisition and detection equipment in the inspection and maintenance process according to any one of claims 1 to 3, characterized in that: The humidification assembly (5) comprises a support frame (51), the inner side of the top end of the support frame (51) is fixedly connected to a hydraulic rod (52), the bottom end of the hydraulic rod (52) is fixedly connected to a slide seat (53), the slide seat (53) is slidably connected to the inner side of the frame (4), a single wind shield head (54) and a single nozzle (55) form a group, and the bottom end of the slide seat (53) is fixedly connected to multiple groups of wind shield heads (54) and nozzles (55).

5. The road surface data acquisition and detection equipment during the inspection and maintenance process according to claim 4 is characterized in that: The spray head (55) is tilted, and the wind shield head (54) has a horizontal air outlet direction. By changing the air outlet speed of the wind shield head (54), the spray angle can be changed to adapt to road surfaces with different standard requirements. The closer the spray angle D is to the horizontal, the higher the detection accuracy of the wheel rut (3).

6. The road surface data acquisition and detection equipment during the inspection and maintenance process according to claim 5 is characterized in that: Each set of wind shield heads (54) and nozzles (55) has a corresponding fan cylinder (59) and a water storage cylinder (56); the top end of the slide seat (53) is fixedly connected to the fan cylinder (59), the fan cylinder (59) has a built-in fan, and the inner side of the slide seat (53) is fixedly connected to an air duct (511), and the two ends of the air duct (511) are respectively connected to the output end of the fan cylinder (59) and the input end of the wind shield head (54).

7. The road surface data acquisition and detection equipment during the inspection and maintenance process according to claim 6 is characterized in that: The water storage cylinder (56) is fixed to the top of the slide seat (53). The top of the water storage cylinder (56) is connected to a water injection cap (57). The output end of the water storage cylinder (56) is connected to a nozzle (510). The end of the nozzle (510) is connected to the input end of the nozzle (55). The nozzle (510) is interrupted and connected through a water pump (58). When the water pump (58) is working, the nozzle (55) sprays.

8. The road surface data collection and detection equipment during the inspection and maintenance process according to claim 7 is characterized in that: The identification component (7) comprises a connection seat (71) fixed on the vehicle frame (4); a thermal imaging camera (72) and a high-speed camera (73) are fixed on the inner side of the bottom end of the connection seat (71); two baffles (75) are horizontally slidably connected to the inner side of the bottom end of the connection seat (71); a first motor (74) is rotatably connected to the inner side of the bottom end of the connection seat (71) via a rotating shaft; a rubber ring is fixedly connected to the outer side of the output end of the first motor (74); when the first motor (74) rotates, the left and right baffles (75) can be driven to move closer to or separate from each other; when the two baffles (75) move closer to each other, they are used to overcome the influence of microwaves generated by the microwave heater on the thermal imaging camera (72) and the high-speed camera (73); when the two baffles (75) move closer to each other, they work.

9. The road surface data collection and detection method during the inspection and maintenance process is characterized by: Using the device as claimed in claim 8, the steps are: Step 1: The vehicle frame (4) is towed by an external tractor to move on the road surface (1); Step 2: The humidifying component (5) is operated. The humidifying component (5) can spray mist and humidify the road surface at an oblique angle. Because the defective part causes the road surface to be missing or uneven, during the spray humidification, the defective part of the road surface (1) and the road surface (1) will produce a relatively dry and wet surface; Step 3: The vehicle frame (4) moves to drive the heating component (6) to move onto the humidified road surface (1). The heating component (6) can perform microwave heating on the humidified road surface (1). Due to the sensitivity of water to microwaves, the dry and wet surfaces will have different temperatures. Step 4: The vehicle frame (4) moves again, driving the identification component (7) to move to the heated road surface (1). The thermal imaging camera (72) and the high-speed camera (73) in the identification component (7) face the road surface and capture road surface information. The different temperatures of the dry and wet surfaces will appear as obvious color differences on the thermal imaging camera (72), and in conjunction with the image recognition of the high-speed camera (73), the recognition accuracy of defects on the road surface (1) is increased.

10. The method for collecting and detecting road surface data during inspection and maintenance according to claim 9, characterized in that: The steps also include: Step 5: If there is a rut (3), the depth measuring component detects the depth of the rut, the second motor (813) rotates, driving the screw (83) to rotate, so that the slider (82) moves to the rut area, the electric push rod (85) moves downward, so that the roller (88) contacts the ground, and the slide plate (810) is located in the middle position inside the outer cylinder (86), the potentiometer (812) starts to obtain the position of the slide plate (810) in real time, and the roller (88) moves back and forth at the rut (3), and the up and down fluctuation of the roller (88) is obtained through the potentiometer (812) and the synchronization block (811) to realize the detection of the depth of the rut (3).

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