Pavement crack detection device based on machine vision

Abstract

The utility model relates to the technical field of general image data processing or generation, in particular to a pavement crack detection device based on machine vision, which comprises a device body, the device body at least comprises an imaging body and a detection body, the imaging body and the detection body are connected at an interval, the imaging body comprises an imaging area and a sliding cover used for closing or opening the imaging area, and the sliding cover is used for closing or opening the imaging area. The sliding cover is arranged above the imaging area in parallel; the detection body comprises a display screen and a control part for adjusting display information of the display screen. According to the invention, through combination of the imaging body and the detection body, integrated rapid acquisition and accurate analysis of the crack position image of the second-level or below pavement are comprehensively realized.

Description

Technical Field

[0001] The present application relates to the general field of image data processing or generation technology, and in particular to a pavement crack detection device based on machine vision. Background Art

[0002] The key to improving road maintenance lies in collecting information about road surface conditions. Currently, manual inspection of pavement cracks is a common method. This requires inspectors to visit the pavement site and inspect all pavement surfaces. Inspectors measure and record the location, length, width, and area of ​​cracks, compile statistics, classify, and archive the data, and then evaluate the cracks according to pavement crack evaluation standards. This method is costly, labor-intensive, and relatively inefficient.

[0003] Although the existing technology mentions the use of lasers to detect road cracks, this method currently relies mainly on manually driven engineering vehicles equipped with laser detection equipment to perform road crack detection. Although this detection method is more reasonable and practical than purely manual detection methods, it still cannot obtain relatively accurate results for road crack detection.

[0004] Based on this, the need to detect road cracks quickly, conveniently and accurately is one of the important tasks in the current road detection direction. Utility Model Content

[0005] Through research, the inventors discovered that machine vision methods are also used in pavement crack detection devices on some expressways or first-class highways. The detection equipment is mostly integrated into the detection vehicle, while manual inspection is usually used for pavement crack detection at level two and below, which cannot guarantee that the crack locations will not be missed.

[0006] The purpose of this application is to provide a pavement crack detection device based on machine vision, which solves the technical problem that the existing technology cannot achieve fast, low-cost and accurate crack detection on secondary and lower pavements through imaging and detection bodies.

[0007] According to one aspect of the present application, a pavement crack detection device based on machine vision is provided, including a device body, wherein the device body includes at least an imaging body and a detection body, wherein the imaging body is connected to the detection body at an interval, the imaging body includes an imaging area, and a sliding cover for closing or opening the imaging area, wherein the sliding cover is arranged parallel to the imaging area; the detection body includes a display screen and a control component for adjusting the display information of the display screen.

[0008] In some embodiments, the imaging body and the detection body are connected via a moving part.

[0009] In some embodiments, the moving member includes a connecting shaft and a sliding rail slidably connected to the connecting shaft.

[0010] In some embodiments, the connecting shaft is rotatably connected to the circumference of the detection body.

[0011] In some embodiments, the connecting shaft is arc-shaped.

[0012] In some embodiments, the device body is also electrically connected to an emergency stop button.

[0013] In some embodiments, the imaging body is further connected to at least one heat dissipation hole.

[0014] In some embodiments, the imaging body is further connected to a moving wheel set.

[0015] In some embodiments, the moving wheel set includes at least 4 spherical wheels.

[0016] In some embodiments, an imaging module is configured in the imaging body, and the imaging module includes at least an imaging area, and the imaging area is connected to the imaging module via a first wire and a second wire; a detection module is configured in the detection body.

[0017] Compared with the existing technology, the present application has the following advantages and beneficial effects: the present application combines the imaging body and the detection body, and at the same time connects the slide rail to comprehensively realize the integrated rapid acquisition and accurate analysis of the crack position image of the secondary and lower roads; in addition, the spherical wheel is used to realize the easy movement of the device, optimizing the existing technology that relies on a complex drive system for driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the axial side structure of the detection device of the present application;

[0020] Figure 2 is a rear view schematic diagram of the detection device of the present application;

[0021] Figure 3 It is a bottom view schematic diagram of the detection device of the present application.

[0022] Legend:

[0023] 1- imaging body; 101- imaging area; 102- sliding cover; 11- moving part; 2- detecting body; 201- display screen; 202- control part; 3- connecting shaft; 4- emergency stop button; 5- slide rail; 6- imaging area; 7- first wire; 8- second wire; 9- spherical wheel; attachment Figure 1-2 In the figure, some technical features are indicated by dotted lines to avoid interference with the technical features. DETAILED DESCRIPTION

[0024] The following is a combination of the appended examples of the present application Figure 1-3 The technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0025] Application Overview

[0026] At present, pavement crack detection is manual detection of pavement cracks, which requires inspection personnel to go to the pavement site to inspect all pavement surfaces, and then make measurements and records, and then compile, classify and archive the recorded data. Finally, the recorded cracks are evaluated according to the pavement crack evaluation standard. However, the above method is time-consuming and labor-intensive, and the results are not guaranteed. Based on this, although the existing technology mentions the use of lasers to detect pavement cracks, this method currently relies mainly on manually driven engineering vehicles carrying laser detection equipment to perform pavement crack detection. However, this detection method is currently commonly used for first-level and above roads, and it is still difficult to obtain relatively accurate results for crack detection on second-level and below pavement surfaces. Based on the above, the present application realizes fast, low-cost and accurate crack detection on second-level and below pavements through the combination of imaging bodies and detection bodies.

[0027] Example 1

[0028] This embodiment provides a pavement crack detection device based on machine vision, including a device body, which includes at least an imaging body 1 and a detection body 2. It should be noted that in other usage environments, other detection structures with detection functions may also be included, such as a primary detection module, a secondary detection module, etc. The imaging body 1 and the detection body 2 are connected at intervals. In detail, the imaging body 1 and the detection body 2 are connected by a moving part 11, and the moving part 11 includes a connecting shaft 3 and a slide rail 5 slidably connected to the connecting shaft 3. It can be understood that, with reference to Figure 1 One end of the connecting shaft 3 is connected to the slide rail 5, and the connecting shaft 3 can drive the detection body 2 to move left and right through the slide rail 5. In other possible implementation methods, the connecting shaft 3 rotates to connect the detection body 2 to realize the rotation of the detection body 2.

[0029] In some possible embodiments, the imaging body 1 includes an imaging area 101 and a sliding cover 102 for closing or opening the imaging area 101. It is understood that when the device is in a standby state, the sliding cover 102 will cover the imaging area 101, and when the device is in an operating state, the sliding cover 102 will open, revealing the imaging area 101. Furthermore, the sliding cover 102 is arranged parallel to the imaging area 101. It should be noted that the parallel arrangement here means that the sliding cover 102 is arranged to separate the imaging area 101 and is consistent with the plane direction of the imaging area 101.

[0030] In some possible implementations, the test object 2 includes a display screen 201 and a control element 202 for adjusting the information displayed on the display screen 201. It is understood that the control element 202 can adjust or control the information displayed on the display screen 201 after the test object 2 is tested by electrical or wireless data means.

[0031] In some possible implementations, the connecting shaft 3 is connected to the detection body 2 in a circumferential rotational manner. It can be understood that, with reference to Figure 1 The connecting shaft 3 is connected to the peripheral surface of the detection body 2 as follows: the connecting shaft 3 is connected to the outer peripheral surface of the detection body 2, and the connection position can be changed according to actual conditions.

[0032] In some possible implementations, the connecting shaft 3 is arc-shaped, and may also be right-angled or straight-line according to actual needs.

[0033] In some possible implementations, the device body is also electrically connected to an emergency stop button 4. When the device is working and there is an obstacle in front of the movement, the operator nearby can press it in time to stop the operation.

[0034] In some possible implementations, the imaging body 1 is further connected to at least one heat dissipation hole 10 . In other scenarios, there may be three or four heat dissipation holes 10 .

[0035] In some possible implementations, the image body 1 is further connected to a moving wheel set, which includes at least four spherical wheels 9 .

[0036] Example 2

[0037] The technical features in this embodiment are basically the same as the technical features described in Example 1. The same technical features and technical solutions will not be repeated here. Only the differences between Example 2 and Example 1 are described here.

[0038] The imaging body 1 houses an imaging module, which includes at least an image collection area 6 connected to the imaging module via a first conductor 7 and a second conductor 8. The detection body 2 houses a detection module. Specifically, the image collection area 6 captures images of road surface defects in real time, transmits them to the imaging module via the first and second conductors 7 and 8, executes image development using an imaging algorithm, and then transmits the developed images to the detection module for analysis and detection, generating final image data of road surface cracks.

[0039] Exemplary Methods

[0040] The present invention does not require manual operation as a whole and can be driven by remote control. Once the drive is connected, the device is remotely controlled to move forward, backward, left, and right. The detection body 2 and the imaging body 1 cooperate to perform image acquisition and analysis operations. The detection body 2 is moved left and right during the detection process through the connection shaft 3 and the slide rail 5, so that the acquired image can be detected and analyzed as a whole.

[0041] The above shows and describes the basic principles, main features and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application.

[0042] Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pavement crack detection device based on machine vision, comprising a device body, characterized in that: The device body includes at least an imaging body (1) and a detection body (2), wherein the imaging body (1) is connected to the detection body (2) at intervals, the imaging body (1) includes an imaging area (101), and a sliding cover (102) for closing or opening the imaging area (101), and the sliding cover (102) is arranged parallel to the imaging area (101); the detection body (2) includes a display screen (201) and a control component (202) for adjusting the display information of the display screen (201).

2. The device according to claim 1, characterized in that The imaging body (1) and the detecting body (2) are connected via a moving part (11).

3. The device according to claim 2, characterized in that The moving member (11) comprises a connecting shaft (3) and a slide rail (5) slidably connected to the connecting shaft (3).

4. The device according to claim 3, characterized in that The connecting shaft (3) is rotatably connected to the peripheral surface of the detection body (2).

5. The device according to claim 3 or 4, characterized in that The connecting shaft (3) is in an arc shape.

6. The device according to claim 1, characterized in that The device body is also electrically connected to an emergency stop button (4).

7. The device according to claim 1, characterized in that The image presenting body (1) is also connected to at least one heat dissipation hole (10).

8. The device according to claim 1, characterized in that The image presenting body (1) is also connected to a moving wheel set.

9. The device according to claim 8, characterized in that The moving wheel set comprises at least four spherical wheels (9).

10. The device according to claim 2, characterized in that The imaging body (1) is provided with an imaging module, the imaging module at least comprising an imaging area (6), the imaging area (6) being connected to the imaging module via a first wire (7) and a second wire (8); the detecting body (2) is provided with a detecting module.

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