Vehicle-mounted tunnel lining apparent disease infrared imaging detection device

Abstract

The utility model discloses a vehicle-mounted infrared imaging detection device for tunnel lining apparent diseases, which is mounted on a traveling vehicle carrier and comprises a data acquisition unit, a detection unit and a control unit, the data acquisition unit comprises an infrared thermal image acquisition module, a visible light image acquisition module and an acquisition control module; the infrared thermal image acquisition module comprises an infrared camera and an infrared optical imaging system adopting a detachable infrared lens; the visible light image acquisition module comprises a visible light camera, a visible light imaging optical system adopting an electric zoom lens and a visible light illumination unit; the infrared camera, the visible light camera and the visible light illumination unit are arranged on a fixed plate and are connected with the acquisition control module; the infrared optical imaging system is connected with the infrared camera; the visible light imaging optical system is connected with the visible light camera. According to the utility model, the problem of high omission ratio caused by poor robustness and single acquired image of a detection device can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel apparent disease detection, in particular to a vehicle-mounted infrared imaging detection device for tunnel lining apparent diseases. Background Technique

[0002] This section aims to provide background or context for the embodiments of the utility model. The description herein is not admitted to be prior art merely because it is included in this section.

[0003] With the increase in the number of tunnels and the expansion of the construction scale, the attention to the apparent state of tunnel linings and various diseases thereof has been increasing day by day. Tunnel lining apparent diseases include lining damage (cracks), peeling and chipping, leakage, etc.

[0004] At present, for the detection of tunnel apparent diseases, the detection device mainly obtains high-definition images of the tunnel appearance through a CCD camera, and then combines an identification algorithm to identify and locate the cracks, chipping, and leakage of the tunnel appearance. However, the image information of the tunnel lining appearance obtained by the CCD camera is relatively single and the image quality is poor, resulting in a relatively high missed detection rate of tunnel lining apparent diseases; moreover, the detection device can only meet the detection at one working distance, resulting in poor robustness of the detection device in on-site use. Summary of the Utility Model

[0005] The embodiments of the utility model provide a vehicle-mounted infrared imaging detection device for tunnel lining apparent diseases, which is used to solve the technical problems of poor robustness of the existing tunnel lining apparent disease detection device and high missed detection rate caused by single image information collected. The vehicle-mounted infrared imaging detection device for tunnel lining apparent diseases is installed on a walking vehicle carrier and includes: a data acquisition unit; wherein,

[0006] The data acquisition unit includes: an infrared thermal image acquisition module, a visible light image acquisition module, and an acquisition control module;

[0007] The infrared thermal image acquisition module includes: an infrared camera and an infrared optical imaging system; the infrared optical imaging system uses a detachable infrared lens;

[0008] The visible light image acquisition module includes: a visible light camera, a visible light imaging optical system, and a visible light illumination unit; the visible light imaging optical system uses an electric zoom lens;

[0009] The infrared camera, the visible light camera, and the visible light illumination unit are arranged on a fixed plate, and the infrared camera, the visible light camera, and the visible light illumination unit are connected to the acquisition control module;

[0010] The infrared optical imaging system is connected to the infrared camera; the visible light imaging optical system is connected to the visible light camera.

[0011] In one embodiment, the visible light illumination unit includes a light-emitting chip and a shaping optical path.

[0012] In one embodiment, the shaping optical path is a reflector cup or a lens.

[0013] In one embodiment, the data acquisition unit includes an IP67 encapsulation housing for encapsulating the infrared thermal image acquisition module, the visible light image acquisition module, and the acquisition control module.

[0014] In one embodiment, the IP67 encapsulation housing is provided with a network interface, an electrical interface, a mechanical interface, and an imaging window.

[0015] In one embodiment, the imaging window includes an infrared window, a visible light window, and a light source window.

[0016] In one embodiment, the infrared window is a germanium glass window, and the visible light window and the light source window are optical glass visible light band enhanced transmission windows.

[0017] In one embodiment, the infrared optical imaging system is connected to the infrared camera flange by a thread; the visible light imaging optical system is connected to the visible light camera flange by a thread.

[0018] In one embodiment, a power supply is further included, and the power supply supplies power to the data acquisition unit.

[0019] In one embodiment, a display is further included, and the display is used to display detection information.

[0020] In the embodiment of the present utility model, the vehicle-mounted infrared imaging detection device for the apparent diseases of tunnel lining is installed on a walking vehicle carrier, and includes: a data acquisition unit; wherein, the data acquisition unit includes: an infrared thermal image acquisition module, a visible light image acquisition module and an acquisition control module; the infrared thermal image acquisition module includes: an infrared camera and an infrared optical imaging system; the infrared optical imaging system adopts a detachable infrared lens; the visible light image acquisition module includes: a visible light camera, a visible light imaging optical system and a visible light illumination unit; the visible light imaging optical system adopts an electric zoom lens; the infrared camera, the visible light camera and the visible light illumination unit are arranged on a fixed plate, and the infrared camera, the visible light camera and the visible light illumination unit are connected with the acquisition control module; the infrared optical imaging system is connected with the infrared camera; the visible light imaging optical system is connected with the visible light camera. In this way, the vehicle-mounted infrared imaging detection device for the apparent diseases of tunnel lining can efficiently acquire the visible light image and the infrared thermal image of the tunnel lining appearance through the infrared thermal image acquisition module and the visible light image acquisition module, and further solve the problem of high missed detection rate of the apparent diseases of tunnel lining caused by single image information collected; and the infrared optical imaging system adopts a detachable infrared lens, which can be applicable to various walking vehicle carriers, and the visible light imaging optical system adopts an electric zoom lens, which can be applicable to different working distances, and the detection device has high robustness. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings. In the drawings:

[0022] Figure 1 It is a schematic installation diagram of a vehicle-mounted infrared imaging detection device for the apparent diseases of tunnel lining provided in the embodiment of the present utility model;

[0023] Figure 2 It is a schematic structural diagram of a vehicle-mounted infrared imaging detection device for the apparent diseases of tunnel lining provided in the embodiment of the present utility model. Detailed Embodiments

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the drawings. Here, the illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model, but not to limit the present utility model.

[0025] In the description of this specification, the terms "including", "comprising", "having", "containing", etc. are all open-ended terms, meaning including but not limited to. The description with reference to terms such as "one embodiment", "one specific embodiment", "some embodiments", "for example", etc. means that the specific features, structures or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present application, and the order of steps is not limited and can be adjusted appropriately as needed.

[0026] It has been found through research that currently, for the detection of tunnel apparent diseases, the detection device mainly obtains high-definition images of the tunnel appearance through a CCD camera, and then combines an identification algorithm to identify and locate the cracks, spalling, and leakage of the tunnel appearance. However, the image information of the tunnel lining appearance obtained by the CCD camera is relatively single, and the image quality is poor, which leads to a relatively high missed detection rate of tunnel lining apparent diseases; moreover, the detection device can only meet the detection at one working distance, resulting in relatively poor robustness of the detection device in on-site use.

[0027] In view of the above research, an in-vehicle infrared imaging detection device for tunnel lining apparent diseases is proposed in an embodiment of the present utility model. The in-vehicle infrared imaging detection device for tunnel lining apparent diseases is installed on a walking vehicle carrier. Through an infrared thermal image acquisition module and a visible light image acquisition module, visible light images and infrared thermal images of the tunnel lining appearance can be efficiently acquired, thereby solving the problem of relatively high missed detection rate of tunnel lining apparent diseases caused by single image information acquisition; and the infrared optical imaging system uses a detachable infrared lens, which can be applicable to a variety of walking vehicle carriers, and the visible light imaging optical system uses an electric zoom lens, which can be applicable to different working distances, and the detection device has relatively high robustness.

[0028] Figure 1 It is a schematic installation diagram of an in-vehicle infrared imaging detection device for tunnel lining apparent diseases provided by an embodiment of the present utility model. As Figure 1 shown, the in-vehicle infrared imaging detection device for tunnel lining apparent diseases is installed on a walking vehicle carrier 1, and the in-vehicle infrared imaging detection device for tunnel lining apparent diseases includes: a data acquisition unit 2.

[0029] Specifically, the data acquisition unit 2 can be installed on the side or the top of the walking vehicle carrier 1 to acquire tunnel lining appearance images during the operation of the vehicle. The walking vehicle carrier 1 can be a running vehicle, a detection vehicle, etc., and the type of the walking vehicle carrier is not limited in this embodiment.

[0030] Figure 2 This is a schematic structural diagram of an on-vehicle infrared imaging detection device for apparent diseases of tunnel linings provided by an embodiment of the present utility model. As Figure 2 shown, the data acquisition unit 2 of the on-vehicle infrared imaging detection device for apparent diseases of tunnel linings includes: an infrared thermal image acquisition module 21, a visible light image acquisition module 22, and an acquisition control module 23;

[0031] The infrared thermal image acquisition module 21 includes: an infrared camera 211 and an infrared optical imaging system 212; the infrared optical imaging system 212 uses a detachable infrared lens;

[0032] The visible light image acquisition module 22 includes: a visible light camera 221, a visible light imaging optical system 222, and a visible light illumination unit 223; the visible light imaging optical system 222 uses an electric zoom lens;

[0033] The infrared camera 211, the visible light camera 221, and the visible light illumination unit 223 are arranged on a fixed plate, and the infrared camera 211, the visible light camera 221, and the visible light illumination unit 223 are connected to the acquisition control module 23;

[0034] The infrared optical imaging system 212 is connected to the infrared camera 211; the visible light imaging optical system 222 is connected to the visible light camera 221.

[0035] In one embodiment, the on-vehicle infrared imaging detection device for apparent diseases of tunnel linings may further include a power supply 3, and the power supply 3 supplies power to the data acquisition unit, and the power supply is installed on the walking vehicle carrier 1.

[0036] In one embodiment, the above infrared optical imaging system 212 is flange-connected to the infrared camera 211 through a thread; the above visible light imaging optical system 222 is flange-connected to the visible light camera 221 through a thread.

[0037] During specific implementation, the data acquisition unit 2 may include an infrared thermal image acquisition module 21, a visible light image acquisition module 22, and an acquisition control module 23; the infrared thermal image acquisition module 21 may include an infrared camera 211 and an infrared optical imaging system 212; the visible light image acquisition module 22 may include a visible light camera 221, a visible light imaging optical system 222, and a visible light illumination unit 223; wherein, the infrared camera 211, the visible light camera 221, and the visible light illumination unit 223 are fixed on an integrated fixed plate, and the optical axes of the three are in the same plane.

[0038] During specific implementation, the acquisition control module 23 is connected to the infrared camera 211, visible light camera 221, and visible light illumination unit 223. The acquisition control module 23 is used to control the opening or closing of the infrared camera 211, visible light camera 221, and visible light illumination unit 223.

[0039] During specific implementation, the above-mentioned infrared camera 211 can detect the apparent temperature information of the tunnel lining to form a thermal image. The infrared optical imaging system 212 is installed in front of the infrared camera and is connected to the infrared camera flange through a thread, and can focus the radiant heat onto the infrared camera chip; the above-mentioned visible light camera 221 can collect the apparent image information of the tunnel lining. The visible light imaging optical system 222 is installed in front of the visible light camera and is connected to the visible light camera flange through a thread, and can focus the visible light onto the visible light camera chip.

[0040] During specific implementation, the infrared optical imaging system 212 is designed with a detachable infrared lens, which can achieve an easy replacement design of the infrared lens in terms of structure without tool operation; for the visible light imaging optical system 222, an electric zoom lens is configured. Different optical configuration selections can be made for the electric zoom lens in the early stage of detection to ensure that the electric zoom lens can achieve 4-fold continuous zoom. During application, the focal length of the electric zoom lens can be changed through electric control; through the design of the detachable infrared lens and the electric zoom lens, it can be ensured that the vehicle-mounted infrared imaging detection device for apparent diseases of tunnel lining has extremely high robustness and is applicable to different vehicle carriers.

[0041] In one embodiment, the above-mentioned visible light illumination unit 223 may include a light-emitting chip and a shaping optical path.

[0042] In one embodiment, the above-mentioned shaping optical path may be a reflector cup or a lens.

[0043] During specific implementation, the above-mentioned visible light illumination unit 223 is used to achieve illumination in the visible light band and supplement light when the visible light camera collects images. The visible light illumination unit 223 includes a light-emitting chip and a shaping optical path. The shaping optical path may be a reflector cup or a lens, which is used to achieve light emission at a certain angle.

[0044] In one embodiment, the above-mentioned data acquisition unit 2 may further include an IP67 encapsulation housing 24, and the IP67 encapsulation housing 24 is used to encapsulate the infrared thermal image acquisition module 21, visible light image acquisition module 22, and acquisition control module 23.

[0045] In one embodiment, the IP67 encapsulation housing 24 is provided with a network interface, an electrical interface, a mechanical interface, and an imaging window.

[0046] In one embodiment, the imaging window includes an infrared window 241, a visible light window 242, and a light source window 243.

[0047] In one embodiment, the infrared window 241 is a germanium glass window, and the visible light window 242 and the light source window 243 are optical glass visible light band enhanced transmission windows.

[0048] During specific implementation, the data acquisition unit 2 realizes IP67 stable encapsulation of the infrared thermal image acquisition module 21, the visible light image acquisition module 22, and the acquisition control module through the IP67 encapsulation housing 24, and communicates with the outside through the reserved network interface ( Figure 2 not shown in the figure), electrical interface ( Figure 2 not shown in the figure), and is installed and fixed to the walking vehicle carrier 1 through the mechanical interface ( Figure 2 not shown in the figure) on the housing.

[0049] During specific implementation, an imaging window is provided on the IP67 encapsulation housing 24, and the imaging windows are respectively the infrared window 241, the visible light window 242, and the light source window 243; the infrared window 241 can be designed as a germanium glass window, and the visible light window 242 and the light source window 243 can be designed as optical glass visible light band enhanced transmission windows.

[0050] In one embodiment, the vehicle-mounted infrared imaging detection device for apparent diseases of tunnel linings may further include a display for displaying detection information.

[0051] During specific implementation, the display can be used to display detection data and detection results.

[0052] In summary, the vehicle-mounted infrared imaging detection device for apparent diseases of tunnel linings provided by the embodiments of the present invention can efficiently collect visible light images and infrared thermal images of the appearance of tunnel linings through the infrared thermal image acquisition module and the visible light image acquisition module, and thus can solve the problem of high omission rate of apparent diseases of tunnel linings caused by single image information collected; moreover, the infrared optical imaging system uses a detachable infrared lens, which can be applicable to various walking vehicle carriers, and the visible light imaging optical system uses an electric zoom lens, which can be applicable to different working distances, and the detection device has high robustness. In addition, the vehicle-mounted infrared imaging detection device for apparent diseases of tunnel linings in the embodiments of the present invention adopts an integrated design, which is simple, easy to use, and easy to maintain.

[0053] The above specific embodiments further elaborate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle-mounted tunnel lining surface defect infrared imaging detection device, characterized in that: The vehicle-mounted tunnel lining surface disease infrared imaging detection device is installed on a moving vehicle carrier, and includes: a data acquisition unit; wherein, The data acquisition unit includes: an infrared thermal image acquisition module, a visible light image acquisition module and an acquisition control module; The infrared thermal image acquisition module includes: an infrared camera and an infrared optical imaging system; the infrared optical imaging system adopts a detachable infrared lens; The visible light image acquisition module includes: a visible light camera, a visible light imaging optical system and a visible light illumination unit; the visible light imaging optical system adopts an electric zoom lens; The infrared camera, the visible light camera and the visible light illumination unit are arranged on a fixed plate, and the infrared camera, the visible light camera and the visible light illumination unit are connected to the acquisition control module; The infrared optical imaging system is connected to the infrared camera; the visible light imaging optical system is connected to the visible light camera.

2. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 1, characterized in that: The visible light illumination unit comprises a light emitting chip and a shaping light path.

3. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 2, characterized in that: The shaping light path is a reflective cup or a lens.

4. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 1, characterized in that: The data acquisition unit comprises an IP67 packaging shell, and the IP67 packaging shell is used to encapsulate the infrared thermal image acquisition module, the visible light image acquisition module and the acquisition control module.

5. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 4, characterized in that: The IP67 packaging shell is provided with a network interface, an electrical interface, a mechanical interface and an imaging window.

6. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 5, characterized in that: The imaging window includes an infrared window, a visible light window and a light source window.

7. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 6, characterized in that: The infrared window is a germanium glass window, and the visible light window and the light source window are optical glass visible light band transmittance-enhancing windows.

8. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 1, characterized in that: The infrared optical imaging system is connected to the infrared camera flange via threads; the visible light imaging optical system is connected to the visible light camera flange via threads.

9. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 1, characterized in that: It also includes a power supply, which supplies power to the data acquisition unit.

10. The vehicle-mounted tunnel lining surface defect infrared imaging detection device according to claim 1, characterized in that: Also included is a display, which is used to display detection information.

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