Road detection system and method

Abstract

The invention relates to the technical field of road detection, in particular to a road detection system which comprises a master controller, a traffic management module, an image acquisition module, a judgment module and a GPS positioning module. The traffic management module, the image acquisition module and the GPS positioning module are all in signal connection with the main controller, and the judgment module and the GPS positioning module are both in signal connection with the image acquisition module; the image acquisition module comprises a rack, an image acquisition mechanism, a road surface cleaning mechanism and a communication device; the image acquisition mechanism is mounted at one end of the bottom of the rack so as to acquire pavement image information; the road surface cleaning mechanism is mounted at the other end of the bottom of the rack so as to clean dust or garbage on the road surface; and the communication device is fixedly mounted on the main controller and is in signal connection with the main controller. The image acquisition module can shoot a road surface image without interference, so that the shot road surface image is more accurate, and the accuracy of a detection result can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of highway inspection technology, and more particularly to highway inspection systems and methods. Background Technology

[0002] Currently, the transportation department conducts routine inspections or periodic checks to detect and record road surface conditions. However, due to human factors, each person has different measurement standards, resulting in varying degrees of error. Furthermore, manual records are not easy to preserve and are not convenient for later retrieval. Moreover, manual inspection can only identify some relatively obvious cracks. However, some cracks may be caused by the internal material being affected by the external environment or external pressure, with the internal tension constantly expanding outward, making it difficult for humans to accurately judge them with the naked eye and measuring tools at the beginning.

[0003] In contrast, Chinese patent application CN201910049753.4 discloses "a highway crack detection system, comprising: a main controller; a traffic department management module connected to the main controller; and a data acquisition end installed on a detection vehicle for highway detection, wherein the data acquisition end comprises: an image acquisition module communicatively connected to the main controller; and a judgment module connected to the image acquisition module".

[0004] This type of patent mainly uses an "image acquisition module" to collect road surface image information, and then uses a "judgment module" to compare the image information collected by the image acquisition module with the image information in the storage module and classify the road surface with cracks. In the prior art, images of the road surface are generally captured by a camera. However, the camera has a fixed shooting angle, which results in a small shooting range per shot. It is necessary to move the mobile device to adjust the position of the camera multiple times to achieve a large-area shooting, which is labor-intensive and has low image acquisition efficiency. In addition, the road surface may be covered with a lot of dust or garbage, which will interfere with the road surface shooting, resulting in unclear images of the road surface, thus affecting the detection of road surface cracks. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies where road dust or debris can affect image acquisition, and to propose a highway inspection system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a highway inspection system, including a main controller, a traffic management module, an image acquisition module, a judgment module, and a GPS positioning module; the traffic management module, image acquisition module, and GPS positioning module are all connected to the main controller, and the judgment module and GPS positioning module are all connected to the image acquisition module; the image acquisition module includes a frame, an image acquisition mechanism, a road surface cleaning mechanism, and a communication device; the image acquisition mechanism is installed at one end of the bottom of the frame to acquire road surface image information; the road surface cleaning mechanism is installed at the other end of the bottom of the frame to clean road surface dust or garbage; the communication device is fixedly installed on a communication device and is connected to the main controller.

[0008] Furthermore, the image acquisition mechanism includes a reciprocating lead screw, a guide rod, a movable seat, a mounting seat, a rotating seat, and a camera; the reciprocating lead screw is rotatably mounted on the inner side of the frame, the guide rod is fixedly mounted on the inner side of the frame and is arranged parallel to the reciprocating lead screw, the top end of the movable seat is slidably connected to the guide rod, the bottom end of the movable seat is threadedly connected to the reciprocating lead screw, the mounting seat is fixedly mounted on the bottom of the movable seat, the top end of the rotating seat is rotatably mounted on the inner side of the mounting seat via a pin, and the camera is fixedly mounted on the bottom end of the rotating seat and is signal-connected to the communication device.

[0009] Furthermore, the image acquisition mechanism also includes a connecting shaft, which includes an insert shaft, a retaining strip, and a sleeve shaft. One end of the insert shaft is fixedly connected to the pin of the rotating seat. The retaining strip is fixedly installed on the outside of the insert shaft. The sleeve shaft passes through the side wall of the frame and is rotatably connected to the frame. The insert shaft and the retaining strip are both inserted into the inside of the sleeve shaft and are slidably connected to the sleeve shaft.

[0010] Furthermore, the inner side of the sleeve shaft is provided with a groove that matches the locking strip, and the locking strip can slide along the groove.

[0011] Furthermore, the image acquisition mechanism also includes a driving component, which includes a first transmission gear, a first motor, an incomplete gear, a second transmission gear, and a coil spring. The first transmission gear is fixedly installed at one end of a reciprocating lead screw and located on the outside of the frame. The first motor is fixedly installed on the outside of the frame, and its output shaft is fixedly connected to the incomplete gear. The second transmission gear is fixedly installed at the end of a sleeve shaft. The incomplete gear alternately meshes with the first transmission gear and the second transmission gear. The coil spring is sleeved on the sleeve shaft, with one end of the coil spring fixedly connected to the outer wall of the frame and the other end of the coil spring fixedly connected to the second transmission gear.

[0012] Furthermore, the road cleaning mechanism includes a protective cover, a second motor, a drive shaft, and a sweeping assembly; the protective cover is fixedly installed at the bottom of the frame, the drive shaft is rotatably installed inside the protective cover, the sweeping assembly is installed at the bottom of the drive shaft, and the second motor is fixedly installed on the frame with its output shaft fixedly connected to the drive shaft.

[0013] Furthermore, the cleaning assembly includes a turntable, two electric push rods, and a brush disc; the turntable is fixedly mounted on the bottom of the drive shaft, the top ends of the two electric push rods are hinged to the bottom of the turntable, and the output ends of the two electric push rods are hinged to the brush disc.

[0014] Furthermore, the road cleaning mechanism also includes a dust removal component, which includes a dust collection box, an axial flow impeller, and a suction pipe. The dust collection box is fixedly installed on the frame, the axial flow impeller is rotatably installed inside the dust collection box, one end of the suction pipe is connected to the inside of the dust collection box, and the other end of the suction pipe is connected to the inside of the protective cover.

[0015] Furthermore, the dust removal assembly also includes a first bevel gear and a second bevel gear; the first bevel gear is fixedly mounted on the drive shaft, the second bevel gear is coaxially fixedly connected to the axial flow impeller and located outside the dust collection box, and the second bevel gear meshes with the first bevel gear.

[0016] The present invention also provides a highway inspection method, comprising the following steps;

[0017] S1: First, the image acquisition mechanism cleans the road surface to be inspected, removing dust or garbage attached to the road surface to prevent dust or garbage from affecting the acquisition of road surface images by the image acquisition mechanism.

[0018] S2: After the road surface is cleaned, the road surface image is acquired by the image acquisition mechanism, and then the acquired image information is sent to the main controller, judgment module and GPS positioning module through the communication device;

[0019] S3: After receiving the image information, the judgment module compares the collected road surface image information with the original road surface image information and determines whether there are cracks in the road surface section.

[0020] S4: After receiving the image information of the crack, the GPS positioning module can locate the section of road surface and send the signal to the main controller, which then sends it to the mobile phone of the management personnel.

[0021] The highway inspection system proposed in this invention has the following advantages:

[0022] 1. After the road cleaning mechanism removes dust and garbage from the road surface, the image acquisition module can capture road surface images without interference, making the captured road surface images more accurate and thus greatly improving the accuracy of the detection results.

[0023] 2. By activating the drive unit to rotate the reciprocating screw, and the guide rod to restrict the movable seat, a relative rotation occurs between the movable seat and the reciprocating screw. This causes the movable seat to reciprocate along the axis of the reciprocating screw, allowing the camera to follow the movable seat in reciprocating translation. This greatly increases the horizontal shooting range of the camera, eliminating the need to frequently move the frame to adjust the horizontal shooting position of the camera, thus significantly reducing manual labor.

[0024] 3. The rotation of the sleeve shaft allows the insertion shaft to rotate synchronously, which in turn allows the rotating seat to rotate synchronously, thus enabling the camera to rotate vertically. This increases the camera's vertical shooting range, thereby reducing the number of times the frame needs to be moved and adjusted laterally, and further improving image acquisition efficiency. Attached Figure Description

[0025] Figure 1 This is a system block diagram of the highway inspection system proposed in this invention;

[0026] Figure 2 This is a schematic diagram of the image acquisition module proposed in this invention;

[0027] Figure 3 This is a partial structural diagram of the image acquisition module proposed in this invention;

[0028] Figure 4 This is a schematic diagram of the image acquisition mechanism proposed in this invention;

[0029] Figure 5 This is a schematic diagram of the connecting shaft component proposed in this invention;

[0030] Figure 6 This is a schematic diagram of the structure of the driving component proposed in this invention;

[0031] Figure 7 This is a schematic diagram of the road cleaning mechanism proposed in this invention;

[0032] Figure 8 This is a schematic diagram of the cleaning component proposed in this invention;

[0033] Figure 9 This is a schematic diagram of the dust removal component proposed in this invention.

[0034] In the diagram: Frame 1, Image acquisition mechanism 2, Reciprocating screw 21, Guide rod 22, Movable seat 23, Mounting seat 24, Rotating seat 25, Camera 26, Connecting shaft 27, Insert shaft 271, Clip 272, Sleeve shaft 273, Slot 274, Drive component 28, First transmission gear 281, First motor 282, Incomplete gear 283, Second transmission gear 284, Coil spring 285, Road cleaning mechanism 3, Protective cover 31, Second motor 32, Drive shaft 33, Sweeping assembly 34, Turntable 341, Electric push rod 342, Brush disc 343, Dust removal assembly 35, Dust collection box 351, Axial flow impeller 352, Suction pipe 353, First bevel gear 354, Second bevel gear 355, Communication device 4. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1:

[0037] Reference Figure 1-2 The highway inspection system includes a main controller, a traffic management module, an image acquisition module, a judgment module, and a GPS positioning module. The traffic management module, image acquisition module, and GPS positioning module are all connected to the main controller, while the judgment module and GPS positioning module are connected to the image acquisition module. The traffic management module stores road surface maps within its management area and divides these maps into different zones, each corresponding to different management personnel. The image acquisition module acquires road surface images. The judgment module determines whether the acquired road surface images contain cracks compared to the original images. The GPS positioning module locates cracked road surfaces and sends the signals to the main controller, which then transmits them to the management personnel's mobile phones.

[0038] The image acquisition module includes a frame 1, an image acquisition mechanism 2, a road cleaning mechanism 3, and a communication device 4. The image acquisition mechanism 2 is installed at one end of the bottom of the frame 1 to acquire road image information. The road cleaning mechanism 3 is installed at the other end of the bottom of the frame 1 to clean up dust or garbage on the road. The communication device 4 is fixedly installed on the communication device and is connected to the main controller via signal. After the road cleaning mechanism 3 cleans up the dust and garbage on the road, the image acquisition module 2 can capture road images without interference, making the captured road images more accurate and thus greatly improving the accuracy of the detection results.

[0039] Example 2:

[0040] Reference Figure 1-6As another preferred embodiment of the present invention, the difference from Embodiment 1 is that the image acquisition mechanism 2 includes a reciprocating lead screw 21, a guide rod 22, a movable seat 23, a mounting seat 24, a rotating seat 25, a camera 26, a connecting shaft 27, and a driving component 28; the reciprocating lead screw 21 is rotatably mounted on the inner side of the frame 1, the guide rod 22 is fixedly mounted on the inner side of the frame 1 and is arranged parallel to the reciprocating lead screw 21, the top end of the movable seat 23 is slidably connected to the guide rod 22, the bottom end of the movable seat 23 is threadedly connected to the reciprocating lead screw 21, the mounting seat 24 is fixedly mounted on the bottom of the movable seat 23, and the top end of the rotating seat 25 is... The camera 26 is rotatably mounted on the inner side of the mounting base 24 via a pin, and is fixedly mounted on the bottom end of the rotating base 25 and connected to the communication device 4 via signal. The camera 26 can capture images of the road surface, thereby achieving image acquisition. The camera 26 then transmits the signal to the communication device 4, which in turn sends the image signal to the main controller. The judgment module then determines whether there are cracks in the acquired road surface image information compared with the original road surface image information. At the same time, the GPS positioning module locates the road surface with cracks and sends the signal to the main controller, which then sends it to the mobile phone of the management personnel.

[0041] When acquiring images, the reciprocating screw 21 is rotated by activating the drive unit 28, while the guide rod 22 restricts the movable seat 23. This causes relative rotation between the movable seat 23 and the reciprocating screw 21, resulting in the movable seat 23 reciprocating along the axis of the reciprocating screw 21. Consequently, the camera 26 can reciprocate along the movable seat 23, which greatly increases the lateral shooting range of the camera 26. This eliminates the need to frequently move the frame 1 to adjust the lateral shooting position of the camera 26, significantly reducing manual labor and improving image acquisition efficiency.

[0042] The connecting shaft 27 includes an insert shaft 271, a retaining strip 272, and a sleeve shaft 273. One end of the insert shaft 271 is fixedly connected to the pin of the rotating seat 25. The retaining strip 272 is fixedly installed on the outside of the insert shaft 271. The sleeve shaft 273 passes through the side wall of the frame 1 and is rotatably connected to the frame 1. The insert shaft 271 and the retaining strip 272 are both inserted into the inside of the sleeve shaft 273 and are slidably connected to the sleeve shaft 273. A retaining groove 274 matching the retaining strip 272 is provided on the inside of the sleeve shaft 273. The retaining strip 272 can slide along the retaining groove 274. During the translation of the movable seat 23, the insert shaft 271 will slide relative to the sleeve shaft 273. The retaining strip 272 can restrict the insert shaft 271 to prevent relative rotation between the insert shaft 271 and the sleeve shaft 273. This ensures that the insert shaft 271 and the sleeve shaft 273 always rotate synchronously during relative sliding, thus ensuring the stability of power transmission.

[0043] The rotation of the sleeve shaft 273 causes the insertion shaft 271 to rotate synchronously, which in turn causes the rotating seat 25 to rotate synchronously, allowing the camera 26 to rotate vertically. This increases the vertical shooting range of the camera 26, thereby reducing the number of times the frame 1 needs to be moved and adjusted laterally, and further improving the image acquisition efficiency.

[0044] The image acquisition mechanism 2 also includes a drive component 28, which includes a first transmission gear 281, a first motor 282, an incomplete gear 283, a second transmission gear 284, and a coil spring 285. The first transmission gear 281 is fixedly installed at one end of the reciprocating screw 21 and located on the outside of the frame 1. The first motor 282 is fixedly installed on the outside of the frame 1 and its output shaft is fixedly connected to the incomplete gear 283. The second transmission gear 284 is fixedly installed at the end of the sleeve shaft 273. The incomplete gear 283 meshes alternately with the first transmission gear 281 and the second transmission gear 284. The coil spring 285 is sleeved on the sleeve shaft 273. One end of the coil spring 285 is fixedly connected to the outer wall of the frame 1, and the other end of the coil spring 285 is fixedly connected to the second transmission gear 284.

[0045] Working principle: During image acquisition, the first motor 282 is started to rotate the incomplete gear 283. When the incomplete gear 283 meshes with the first transmission gear 281, the incomplete gear 283 disengages from the second transmission gear 284. This causes the first transmission gear 281 to rotate a certain angle and then disengage from the incomplete gear 283, thereby causing the reciprocating screw 21 to rotate a certain angle and then stop rotating. When the first transmission gear 281 meshes with the incomplete gear 283 again, the reciprocating screw 21 rotates the same angle again. This cycle repeats, allowing the reciprocating screw to rotate periodically. This causes the movable seat 23 to drive the camera 26 to periodically move laterally by the same distance. This provides the camera 26 with a certain shooting time within a certain distance, thus ensuring the image shooting quality.

[0046] When the incomplete gear 283 meshes with the second transmission gear 284, the first transmission gear 281 disengages from the incomplete gear 283. This causes the second transmission gear 284 to rotate the sleeve shaft 273 by a certain angle, which in turn causes the rotating seat 25 to rotate the camera 26 longitudinally. During this process, the coil spring 285 is wound up and accumulates elastic potential energy. When the second transmission gear 284 disengages from the incomplete gear 283, the coil spring 285 releases its elastic potential energy, causing the sleeve shaft 273 to rotate in the opposite direction. This causes the rotating seat 25 to rotate the camera 26. This cycle repeats, allowing the rotating seat 25 to drive the camera 26 to swing longitudinally back and forth, thus greatly increasing the longitudinal shooting range. At the same time, the camera 26 can move laterally along the reciprocating lead screw 21, which greatly increases the single lateral and longitudinal shooting range of the camera 26.

[0047] Example 3:

[0048] In Embodiment 1 or Embodiment 2, when cleaning dust, because dust is light, it is easy to fly and scatter. When the camera 26 is taking pictures, the flying dust is easy to adhere to the lens, resulting in poor clarity of the picture taken by the camera 26, which affects the accuracy of the road surface detection results.

[0049] Reference Figure 1-9 As another preferred embodiment of the present invention, the difference from Embodiment 1 or Embodiment 2 is that the road cleaning mechanism 3 includes a protective cover 31, a second motor 32, a drive shaft 33, a sweeping assembly 34, and a dust removal assembly 35; the protective cover 31 is fixedly installed on the bottom of the frame 1, the drive shaft 33 is rotatably installed inside the protective cover 31, the sweeping assembly 34 is installed on the bottom of the drive shaft 33, the second motor 32 is fixedly installed on the frame 1, and its output shaft is fixedly connected to the drive shaft 33; the sweeping assembly 34 includes a turntable 341, two electric push rods 342, and a brush disc 343; the turntable 341 is fixedly installed on the bottom of the drive shaft 33, the top ends of the two electric push rods 342 are hinged to the bottom of the turntable 341, and the output ends of the two electric push rods 342 are hinged to the brush disc 343. During cleaning, the second motor 32 is started to make the drive shaft 33 rotate, which in turn makes the turntable 341 drive the brush disc 343 to rotate. At the same time, the two electric push rods 342 are controlled to make the brush disc 343 move downward until it contacts the ground. The high-speed rotating brush disc 343 can clean up the dust or garbage on the road surface, thereby preventing the dust or garbage from affecting the camera 26's shooting of the road surface.

[0050] When the brush disc 343 is sweeping the road, it can retract by controlling one of the electric push rods 342, which can tilt the brush disc 343. This allows the brush disc 343 to sweep the road at an angle, which reduces the contact area between the brush disc 343 and the road, thereby increasing the force on the road debris. This can remove some stubborn debris and greatly improve the sweeping effect.

[0051] The dust removal assembly 35 includes a dust collection box 351, an axial flow impeller 352, a suction pipe 353, a first bevel gear 354, and a second bevel gear 355. The dust collection box 351 is fixedly installed on the frame 1, the axial flow impeller 352 is rotatably installed inside the dust collection box 351, one end of the suction pipe 353 is connected to the inside of the dust collection box 351, and the other end of the suction pipe 353 is connected to the inside of the protective cover 31. The first bevel gear 354 is fixedly installed on the drive shaft 33, and the second bevel gear 355 is coaxially fixedly connected to the axial flow impeller 352 and located outside the dust collection box 351. The second bevel gear 355 meshes with the first bevel gear 354. During the cleaning process, the drive shaft 33 will also drive the first bevel gear 354 to rotate synchronously. Since the first bevel gear 354 meshes with the second bevel gear 355, the second bevel gear 355 will drive the axial flow impeller 352 to rotate synchronously. During the high-speed rotation of the axial flow impeller 352, the air flow speed inside the dust collection box 351 will increase, thereby reducing the pressure inside the dust collection box 351. This allows the suction pipe 353 to introduce the air inside the protective cover 31 into the dust collection box 351, and thus suck in the dust in the air inside the protective cover 31. This can prevent the dust from flying around and affecting the shooting of the camera 26.

[0052] The present invention also provides a highway inspection method, comprising the following steps;

[0053] S1: First, the image acquisition mechanism 2 cleans the road surface to be inspected, removing dust or garbage attached to the road surface to prevent dust or garbage from affecting the acquisition of road surface images by the image acquisition mechanism 2.

[0054] S2: After the road surface is cleaned, the road surface image is acquired by the image acquisition mechanism 2, and then the acquired image information is sent to the main controller, judgment module and GPS positioning module through the communication device 4.

[0055] S3: After receiving the image information, the judgment module compares the collected road surface image information with the original road surface image information and determines whether there are cracks in the road surface section.

[0056] S4: After receiving the image information of the crack, the GPS positioning module can locate the section of road surface and send the signal to the main controller, which then sends it to the mobile phone of the management personnel.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A highway detection system, comprising a main controller, a traffic management module, an image acquisition module, a judgment module, and a GPS positioning module; wherein the traffic management module, the image acquisition module, and the GPS positioning module are all signal-connected to the main controller, and the judgment module and the GPS positioning module are all signal-connected to the image acquisition module; characterized in that, The image acquisition module includes a frame (1), an image acquisition mechanism (2), a road cleaning mechanism (3), and a communication device (4); the image acquisition mechanism (2) is installed at one end of the bottom of the frame (1) to acquire road image information; the road cleaning mechanism (3) is installed at the other end of the bottom of the frame (1) to clean road dust or garbage; the communication device (4) is fixedly installed on the communication device (4) and is connected to the main controller signal.

2. The highway inspection system according to claim 1, characterized in that, The image acquisition mechanism (2) includes a reciprocating screw (21), a guide rod (22), a movable seat (23), a mounting seat (24), a rotating seat (25), and a camera (26). The reciprocating screw (21) is rotatably mounted on the inner side of the frame (1). The guide rod (22) is fixedly mounted on the inner side of the frame (1) and is parallel to the reciprocating screw (21). The top end of the movable seat (23) is slidably connected to the guide rod (22). The bottom end of the movable seat (23) is threadedly connected to the reciprocating screw (21). The mounting seat (24) is fixedly mounted on the bottom of the movable seat (23). The top end of the rotating seat (25) is rotatably mounted on the inner side of the mounting seat (24) through a pin. The camera (26) is fixedly mounted on the bottom end of the rotating seat (25) and is signal-connected to the communication device (4).

3. The highway inspection system according to claim 2, characterized in that, The image acquisition mechanism (2) further includes a connecting shaft (27), which includes an insert shaft (271), a retaining strip (272), and a sleeve shaft (273). One end of the insert shaft (271) is fixedly connected to the pin of the rotating seat (25). The retaining strip (272) is fixedly installed on the outside of the insert shaft (271). The sleeve shaft (273) passes through the side wall of the frame (1) and is rotatably connected to the frame (1). The insert shaft (271) and the retaining strip (272) are both inserted into the inside of the sleeve shaft (273) and are slidably connected to the sleeve shaft (273).

4. The highway inspection system according to claim 3, characterized in that, The inner side of the sleeve (273) is provided with a slot (274) that matches the card strip (272), and the card strip (272) can slide along the slot (274).

5. The highway inspection system according to claim 4, characterized in that, The image acquisition mechanism (2) further includes a driving component (28), which includes a first transmission gear (281), a first motor (282), an incomplete gear (283), a second transmission gear (284), and a coil spring (285). The first transmission gear (281) is fixedly installed at one end of the reciprocating screw (21) and located on the outside of the frame (1). The first motor (282) is fixedly installed on the outside of the frame (1) and its output shaft is fixedly connected to the incomplete gear (283). The second transmission gear (284) is fixedly installed at the end of the sleeve shaft (273). The incomplete gear (283) meshes alternately with the first transmission gear (281) and the second transmission gear (284). The coil spring (285) is sleeved on the sleeve shaft (273). One end of the coil spring (285) is fixedly connected to the outer wall of the frame (1), and the other end of the coil spring (285) is fixedly connected to the second transmission gear (284).

6. The highway inspection system according to claim 5, characterized in that, The road cleaning mechanism (3) includes a protective cover (31), a second motor (32), a drive shaft (33), and a sweeping assembly (34). The protective cover (31) is fixedly installed at the bottom of the frame (1), the drive shaft (33) is rotatably installed inside the protective cover (31), the sweeping assembly (34) is installed at the bottom of the drive shaft (33), and the second motor (32) is fixedly installed on the frame (1) and its output shaft is fixedly connected to the drive shaft (33).

7. The highway inspection system according to claim 6, characterized in that, The cleaning assembly (34) includes a turntable (341), two electric push rods (342) and a brush disc (343); the turntable (341) is fixedly installed at the bottom of the drive shaft (33), the top ends of the two electric push rods (342) are hinged to the bottom of the turntable (341), and the output ends of the two electric push rods (342) are hinged to the brush disc (343).

8. The highway inspection system according to claim 7, characterized in that, The road cleaning mechanism (3) also includes a dust removal component (35), which includes a dust collection box (351), an axial flow impeller (352), and a suction pipe (353). The dust collection box (351) is fixedly installed on the frame (1), the axial flow impeller (352) is rotatably installed inside the dust collection box (351), one end of the suction pipe (353) is connected to the inside of the dust collection box (351), and the other end of the suction pipe (353) is connected to the inside of the protective cover (31).

9. The highway inspection system according to claim 8, characterized in that, The dust removal assembly (35) further includes a first bevel gear (354) and a second bevel gear (355); the first bevel gear (354) is fixedly mounted on the drive shaft (33), the second bevel gear (355) is coaxially fixedly connected to the axial flow impeller (352) and located outside the dust collection box (351), and the second bevel gear (355) meshes with the first bevel gear (354).

10. A detection method for a highway detection system according to claim 9, characterized in that, Includes the following steps; S1: First, the road surface to be inspected is cleaned by the image acquisition mechanism (2) to remove the dust or garbage attached to the road surface, so as to avoid the dust or garbage affecting the acquisition of road surface images by the image acquisition mechanism (2); S2: After the road surface is cleaned, the road surface image is collected by the image acquisition mechanism (2), and then the collected image information is sent to the main controller, judgment module and GPS positioning module through the communication device (4); S3: After receiving the image information, the judgment module compares the collected road surface image information with the original road surface image information and determines whether there are cracks in the road surface section. S4: After receiving the image information of the crack, the GPS positioning module can locate the section of road surface and send the signal to the main controller, which then sends it to the mobile phone of the management personnel.

Images