Image acquisition device capable of shielding light interference

Abstract

The utility model discloses an image acquisition device capable of shielding light interference, and relates to the technical field of tunnel detection. The objective of the utility model is to solve the problem that an existing line-scan digital camera is interfered by ambient light, so that acquired images are affected. The device comprises a protective shell, optical glass, a heating camera box cover, a camera assembly, a laser shaping device and a temperature-controlled wave-locked laser assembly, the heating camera box cover is arranged on the front end face of the camera protective shell, an acquisition window is arranged on the heating camera box cover, the optical glass is embedded in the acquisition window, and the temperature-controlled wave-locked laser assembly is arranged in the acquisition window. The camera assembly and the laser shaping device are arranged in the camera protection shell, lenses of the camera assembly and the laser shaping device face the optical glass, the temperature control wave-locked laser assembly is arranged on one side of the camera protection shell, and the temperature control wave-locked laser assembly is connected with the camera assembly and the laser shaping device. The image acquisition device is used for image acquisition.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel detection, in particular to an image acquisition device that shields light interference. Background Art

[0002] The linear array image acquisition module of the prior art cannot effectively eliminate sunlight and ambient light. When the sunlight is directly facing the linear array camera or slightly offset at the outdoor railway trackside, it will cause significant sunlight interference to the image. When the ambient light is strong, the collected image will be greatly affected, which is not conducive to subsequent manual image viewing or automatic recognition. Utility Model Content

[0003] In order to solve the problem that the existing linear array camera is disturbed by ambient light, resulting in the influence of the collected image, the utility model further proposes an image collection device that shields light interference.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] An image acquisition device for shielding light interference includes a camera protection shell, optical glass, a heated camera box cover, a camera assembly, a laser shaping device and a temperature-controlled wave-locking laser assembly. The heated camera box cover is arranged on the front end surface of the camera protection shell, a collection window is opened on the heated camera box cover, the optical glass is embedded in the collection window, the camera assembly and the laser shaping device are both arranged in the camera protection shell, and the lenses of the camera assembly and the laser shaping device are both arranged toward the optical glass. The temperature-controlled wave-locking laser assembly is arranged on one side of the camera protection shell, and the temperature-controlled wave-locking laser assembly is respectively connected to the camera assembly and the laser shaping device.

[0006] Furthermore, the camera assembly includes a lens, a filter and a camera, the camera is fixed in a camera protection shell, the lens is fixed at the front end of the camera, and the filter is arranged between the lens and the camera.

[0007] Furthermore, the filter is an ultra-narrow band filter.

[0008] Furthermore, the laser shaping device includes a focusing handle, a lens barrel and a shaping prism, the lens barrel is fixedly connected in the camera protection shell, the focusing handle is arranged at the rear end of the lens barrel, and the shaping prism is arranged at the front end of the lens barrel.

[0009] Furthermore, the lens barrels are arranged in parallel on one side of the camera.

[0010] Furthermore, the temperature-controlled wave-locking laser assembly includes a laser temperature and drive controller, a laser protection shell and a wave-locking laser. The wave-locking laser is arranged in the laser protection shell. The lens of the wave-locking laser is connected to the laser shaping device through an optical fiber. The laser temperature and drive controller is electrically connected to the wave-locking laser. The laser temperature and drive controller is electrically connected to the camera assembly through a trigger drive line.

[0011] Furthermore, the temperature-controlled wave-locked laser assembly also includes a cooling fan, a heat sink group and a cooling fin. A fixing plate is horizontally fixed to the middle of the laser protection shell, a mounting groove is provided at the front of the fixing plate, and the cooling fin is embedded in the mounting groove. The wave-locked laser is fixed to the upper end surface of the fixing plate and is arranged at the upper end of the cooling fin. The heat sink group is arranged at the lower end of the fixing plate, and the cooling fan is arranged toward the rear end of the heat sink group.

[0012] Furthermore, the heat dissipation fan is embedded in the rear end surface of the laser protection shell, and a vent is provided on the front end surface of the laser protection shell, and the vent is arranged at the front end of the heat sink group.

[0013] Furthermore, the laser protection housing is fixedly connected to the lower end of the camera protection housing.

[0014] Furthermore, electric heating plates are provided on the edges of the collection window on the heating camera box cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model proposes an image acquisition device that shields light interference, which can generate an image with switching light on and off, upload the image to a host computer processing unit, extract odd and even lines and subtract them to generate an image without interference, thereby eliminating the interference caused by shielding ambient light (including sunlight) to the image, ensuring the quality of the collected image, and facilitating subsequent manual image viewing or automatic recognition. The optical glass has a high transmittance to ensure the quality of the image, and the heated camera box cover has a heating function to prevent the optical glass from fogging, thereby ensuring the clarity of the image. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the overall structure of the utility model;

[0018] Figure 2 It is an odd-numbered row image obtained by using the utility model;

[0019] Figure 3 It is an even-numbered row image obtained by using the utility model;

[0020] Figure 4 It is the final image obtained by utilizing the utility model. DETAILED DESCRIPTION

[0021] Specific implementation method 1: Combination Figure 1 The present embodiment is described. In the present embodiment, an image acquisition device for shielding light interference includes a camera protection shell 4, an optical glass 5, a heated camera box cover 17, a camera assembly, a laser shaping device and a temperature-controlled wave-locking laser assembly. The heated camera box cover 17 is arranged on the front end surface of the camera protection shell 4. A collection window is provided on the heated camera box cover 17. The optical glass 5 is embedded in the collection window. The camera assembly and the laser shaping device are both arranged in the camera protection shell 4. The lenses of the camera assembly and the laser shaping device are both arranged toward the optical glass 5. The temperature-controlled wave-locking laser assembly is arranged on one side of the camera protection shell 4. The temperature-controlled wave-locking laser assembly is respectively connected to the camera assembly and the laser shaping device.

[0022] In this embodiment, the temperature-controlled wave-locked laser assembly is controlled to make the odd and even rows of the image collected by the image sensor different. The optical glass 5 has a high transmittance. The heated camera box cover 17 has a heating function to prevent the optical glass 5 from fogging, thereby ensuring the clarity of the image.

[0023] Using a temperature-controlled wave-locked laser component as a compensation light source, the image acquisition of camera 3 is controlled by the temperature-controlled wave-locked laser component. The working process is as follows:

[0024] Step 1: The temperature-controlled wave-locked laser component receives a light-on instruction;

[0025] Step 2: The temperature-controlled wave-locked laser assembly turns on the light source and controls the camera 3 to capture a line of images;

[0026] Step 3, the temperature-controlled wave-locked laser turns off the light source;

[0027] Step 4: The temperature-controlled wave-locked laser controls the camera 3 to take another row of images;

[0028] Step 5: Return to step 1 and wait for the next instruction;

[0029] Step 6: After steps 1 to 5 are repeated several times (taking 1000 times as an example), the image processor processes the 1000-line image and separates the odd-numbered lines from the even-numbered lines to form two images, such as Figure 2 and Figure 3 shown.

[0030] Step 7: Subtract the odd-numbered line image from the even-numbered line image to obtain the final image, such as Figure 4 shown.

[0031] Specific implementation method 2: Combination Figure 1This embodiment is described. The camera assembly of this embodiment includes a lens 1, a filter 2 and a camera 3. The camera 3 is fixed in a camera protection housing 4. The lens 1 is fixed at the front end of the camera 3. The filter 2 is arranged between the lens 1 and the camera 3. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0032] In this embodiment, the camera 3 collects images through the optical filter 2 and the lens 1. The setting of the optical filter 2 can reduce light interference during exposure.

[0033] Specific implementation method three: Combination Figure 1 This embodiment is described, and the filter 2 of this embodiment is an ultra-narrow band filter. The undisclosed technical features of this embodiment are the same as those of the second embodiment.

[0034] Filter 2 uses an ultra-narrow band filter to allow less interference from incoming light during the exposure time.

[0035] Specific implementation method four: Combination Figure 1 This embodiment is described. The laser shaping device of this embodiment includes a focus handle 6, a lens barrel 8 and a shaping prism 9. The lens barrel 8 is fixed in the camera protection housing 4. The focus handle 6 is arranged at the rear end of the lens barrel 8, and the shaping prism 8 is arranged at the front end of the lens barrel 8. The undisclosed technical features of this embodiment are the same as those of the second specific embodiment.

[0036] In this embodiment, the shaping adjustment of the laser is achieved by setting up the laser shaping device, and the supplementary light source is adjusted to a suitable size and shape.

[0037] Specific implementation method five: Combination Figure 1 This embodiment is described. In this embodiment, the lens barrel 8 is arranged in parallel on one side of the camera 3. The technical features not disclosed in this embodiment are the same as those in the fourth embodiment.

[0038] In this embodiment, the supplementary light source is arranged close to the camera 3 to effectively supplement the shooting light.

[0039] Specific implementation method six: Combination Figure 1 This embodiment is described. The temperature-controlled wave-locking laser assembly of this embodiment includes a laser temperature and drive controller 11, a laser protection housing 14 and a wave-locking laser 16. The wave-locking laser 16 is arranged in the laser protection housing 14. The lens of the wave-locking laser 16 is connected to the laser shaping device through an optical fiber 7. The laser temperature and drive controller 11 is electrically connected to the wave-locking laser 16. The laser temperature and drive controller 11 is electrically connected to the camera assembly through a trigger drive line 10. The undisclosed technical features in this embodiment are the same as those in the first, second, third, fourth or fifth embodiments.

[0040] In this embodiment, the laser temperature and drive controller 11 controls the switching of the wave-locking laser 16 and the camera 3, and at the same time controls the temperature of the wave-locking laser 16 to adjust the brightness of the wave-locking laser 16. In order to cooperate with the ultra-narrow band filter, the laser uses a pulsed temperature-controlled wave-locking laser as a compensation light source.

[0041] Specific implementation method seven: Combination Figure 1 This embodiment is described. The temperature-controlled wave-locked laser assembly of this embodiment further includes a cooling fan 12, a heat sink group 13 and a cooling fin 15. A fixing plate is horizontally fixed to the middle of the laser protection housing 14. A mounting groove is provided at the front of the fixing plate. The cooling fin 15 is embedded in the mounting groove. The wave-locked laser 16 is fixed to the upper end surface of the fixing plate and is arranged at the upper end of the cooling fin 15. The heat sink group 13 is arranged at the lower end of the fixing plate. The cooling fan 12 is arranged toward the rear end of the heat sink group 13. The undisclosed technical features in this embodiment are the same as those in the specific embodiment 6.

[0042] In this embodiment, the heat dissipation fan 12 and the cooling plate 15 are electrically connected to the laser temperature and drive controller 11 respectively. The temperature of the wave-locked laser 16 is adjusted by controlling the heat dissipation fan 12 and the cooling plate 15 by the laser temperature and drive controller 11.

[0043] Specific implementation method eight: Combination Figure 1 To explain this embodiment, the heat dissipation fan 12 is embedded in the rear end face of the laser protection housing 14, and a vent 18 is provided on the front end face of the laser protection housing 14, and the vent 18 is provided at the front end of the heat sink group 13. The undisclosed technical features in this embodiment are the same as those in the seventh embodiment.

[0044] In this embodiment, after the heat dissipation fan 12 is turned on, the heat of the heat dissipation fin assembly 13 is discharged from the ventilation port 18 .

[0045] Specific implementation method nine: Combination Figure 1 To explain this embodiment, in this embodiment, the laser protection housing 14 is fixedly connected to the lower end of the camera protection housing 4. The undisclosed technical features in this embodiment are the same as those in the eighth embodiment.

[0046] Such a design reduces the overall occupied space of the image acquisition device.

[0047] Specific implementation method ten: Combination Figure 1 This embodiment is described in which electric heating plates are arranged around the edges of the acquisition window on the heating camera box cover 17. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0048] In this embodiment, the periphery of the optical glass 5 is heated by the provision of an electric heating sheet to prevent the optical glass from fogging and ensure the clarity of the image.

[0049] How it works

[0050] After receiving the instruction, the temperature-controlled wave-locking laser component controls the wave-locking laser 16 to start emitting laser light, and transmits it to the laser shaping device through the optical fiber 7. After shaping, the output laser is irradiated to the object to be measured, reflected back to the lens 1 through the optical glass 5, and then transmitted back to the camera 3 through the filter 2. At the same time, the temperature-controlled wave-locking laser component will also send an instruction to the camera 3 to let the camera 3 collect a line of images. After the collection is completed, the temperature-controlled wave-locking laser component turns off the wave-locking laser 16. After turning off the laser, the camera 3 is controlled to collect another line of images. The above steps are repeated to generate an image with switching light alternating. Finally, the camera 3 transmits it to the host computer processing unit to extract the odd and even lines and subtract them to generate an image without interference.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An image acquisition device shielding light interference, characterized in that: The invention comprises a camera protection shell (4), an optical glass (5), a heated camera box cover (17), a camera assembly, a laser shaping device and a temperature-controlled wave-locking laser assembly. The heated camera box cover (17) is arranged on the front end surface of the camera protection shell (4). A collection window is provided on the heated camera box cover (17). The optical glass (5) is embedded in the collection window. The camera assembly and the laser shaping device are both arranged in the camera protection shell (4). The lenses of the camera assembly and the laser shaping device are both arranged toward the optical glass (5). The temperature-controlled wave-locking laser assembly is arranged on one side of the camera protection shell (4). The temperature-controlled wave-locking laser assembly is connected to the camera assembly and the laser shaping device respectively.

2. The image acquisition device for shielding light interference according to claim 1, characterized in that: The camera assembly comprises a lens (1), a filter (2) and a camera (3); the camera (3) is fixedly connected in a camera protection housing (4); the lens (1) is fixedly connected to the front end of the camera (3); and the filter (2) is arranged between the lens (1) and the camera (3).

3. The image acquisition device for shielding light interference according to claim 2, characterized in that: The optical filter (2) is an ultra-narrow band filter.

4. The image acquisition device for shielding light interference according to claim 2, characterized in that: The laser shaping device comprises a focusing handle (6), a lens barrel (8) and a shaping prism (9); the lens barrel (8) is fixedly connected to a camera protection housing (4); the focusing handle (6) is arranged at the rear end of the lens barrel (8); and the shaping prism (9) is arranged at the front end of the lens barrel (8).

5. The image acquisition device for shielding light interference according to claim 4, characterized in that: The lens barrels (8) are arranged in parallel on one side of the camera (3).

6. The image acquisition device for shielding light interference according to claim 1, 2, 3, 4 or 5, characterized in that: The temperature-controlled wave-locking laser assembly comprises a laser temperature and drive controller (11), a laser protection housing (14) and a wave-locking laser (16); the wave-locking laser (16) is arranged in the laser protection housing (14); a lens of the wave-locking laser (16) is connected to a laser shaping device via an optical fiber (7); the laser temperature and drive controller (11) is electrically connected to the wave-locking laser (16); and the laser temperature and drive controller (11) is electrically connected to a camera assembly via a trigger drive line (10).

7. The image acquisition device for shielding light interference according to claim 6, characterized in that: The temperature-controlled wave-locked laser assembly further comprises a heat dissipation fan (12), a heat sink group (13) and a cooling fin (15); a fixing plate is horizontally fixedly connected to the middle of the laser protection housing (14); a mounting groove is provided at the front of the fixing plate; the cooling fin (15) is embedded in the mounting groove; the wave-locked laser (16) is fixedly connected to the upper end surface of the fixing plate and arranged at the upper end of the cooling fin (15); the heat sink group (13) is arranged at the lower end of the fixing plate; and the heat dissipation fan (12) is arranged towards the rear end of the heat sink group (13).

8. The image acquisition device for shielding light interference according to claim 7, characterized in that: The heat dissipation fan (12) is embedded in the rear end surface of the laser protection shell (14), and a vent (18) is provided on the front end surface of the laser protection shell (14), and the vent (18) is arranged at the front end of the heat sink group (13).

9. The image acquisition device for shielding light interference according to claim 8, characterized in that: The laser protection housing (14) is fixedly connected to the lower end of the camera protection housing (4).

10. The image acquisition device for shielding light interference according to claim 1, characterized in that: Electric heating plates are provided on the edges of the collection window on the heating camera box cover (17).

Images