Coal bunker level detection device using infrared image composite enhancement technology

Abstract

The present application relates to the technical field of image processing, and more particularly to a coal bunker material level detection device using infrared image composite enhancement technology, comprising a mounting frame body, a rotation detection assembly, an adjusting assembly, a mounting groove and a limiting installation assembly, a rotation detection assembly is installed on the bottom end outer wall of the mounting frame body, an adjusting assembly is installed below the mounting frame body, a mounting groove is provided in the mounting frame body, and a limiting installation assembly is installed in the mounting groove; the rotation detection assembly comprises an annular guide rail; the present application adopts a rotation detection assembly to perform rotation detection on the infrared thermal imaging structure, without the need to provide multiple infrared thermal imaging structures at various places in the coal bunker, thereby reducing detection cost and improving detection effect; the adjusting assembly is adopted to perform angle adjustment on the infrared thermal imaging structure, facilitating infrared thermal imaging of various places in the coal bunker, avoiding omission in material level detection, and improving material level detection effect.

Description

Technical Field

[0001] This invention relates to the field of image processing technology, and in particular to a coal bunker level detection device utilizing infrared image composite enhancement technology. Background Technology

[0002] Various types of coal bunkers are commonly installed between major transportation links such as underground coal mines to regulate and buffer the production capacity of each link. Accurate and effective measurement of coal level in the bunkers is an important guarantee for safe production in coal mines, and preventing coal overflow and emptying are key links. At present, there are more and more technologies and level sensors for detecting the level in the bunkers, which are diverse and can be divided into capacitive, pressure, ultrasonic, laser, radar, etc. according to the measurement principle.

[0003] Infrared thermal imagers use infrared detectors and optical imaging lenses to receive the infrared radiation energy distribution pattern of the target object and reflect it onto the photosensitive element of the infrared detector, thus obtaining an infrared thermal image. This thermal image corresponds to the heat distribution field on the object's surface; different colors in the thermal image represent different temperatures of the target object, characterizing the overall temperature distribution of the target. For level detection based on infrared imaging, a coal bunker level detection device is required. However, existing coal bunker level detection devices generally cannot rotate the infrared camera structure for imaging, requiring multiple infrared camera structures to be installed in the coal bunker, increasing detection costs and reducing detection effectiveness. Furthermore, the angle of the infrared camera structure is generally not adjustable, making it difficult to perform infrared thermal imaging of various parts of the coal bunker, leading to omissions in level detection and reducing the detection effectiveness. Additionally, the equipment is generally fixed using bolts, which are difficult to install on the inner wall of the coal bunker, making the installation process cumbersome and reducing the effectiveness of the equipment installation. Summary of the Invention

[0004] The problem solved by this invention is to provide a coal bunker level detection device using infrared image composite enhancement technology. This device can perform rotational detection of the infrared thermal imaging structure, eliminating the need for multiple infrared thermal imaging structures at various locations within the coal bunker, thus reducing detection costs and improving detection efficiency. Furthermore, the angle of the infrared thermal imaging structure can be adjusted to facilitate infrared thermal imaging of various locations within the coal bunker, preventing any omissions in level detection and improving the detection effect. Moreover, the plug-in structure can be inserted into the coal bunker to fix the detection device in position, eliminating the need for bolts, thereby simplifying the installation process and improving the installation efficiency of the device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coal bunker level detection device using infrared image composite enhancement technology, comprising a mounting frame body, a rotating detection component, an adjusting component, a mounting groove, and a limiting mounting component. The rotating detection component is installed on the bottom outer wall of the mounting frame body, the adjusting component is installed below the mounting frame body, the mounting groove is provided inside the mounting frame body, and the limiting mounting component is installed in the mounting groove.

[0006] The rotation detection assembly includes an annular guide rail, a first support plate, a first motor, a gear, a slip ring, an external gear ring, a vertical plate, a rotating shaft, a torsion spring, and an infrared camera. An annular guide rail is welded to the bottom outer wall of the mounting frame body. A slip ring is slidably connected inside the annular guide rail. An external gear ring is welded to the bottom outer wall of the slip ring. A gear is meshed on one side outer wall of the external gear ring. A first support plate is welded to one side outer wall of the annular guide rail. A first motor is embedded in the first support plate, and one end of the output shaft of the first motor is fixed to the top outer wall of the gear.

[0007] Preferably, vertical plates are welded to the bottom outer wall of the external toothed ring, and an infrared camera is installed between the vertical plates. A rotating shaft is symmetrically fixed to the infrared camera, and the other end of the rotating shaft is rotatably connected to the outer wall of the vertical plate. A torsion spring is fixed to one side of the outer wall of the vertical plate, and the other end of the torsion spring is fixed to the outer wall of the infrared camera.

[0008] Preferably, the adjustment assembly includes a second support plate, a connecting plate, a fixed arc plate, a protective cover, a second motor, a winding wheel, and a connecting rope. The second support plate is fixedly connected to the inner side of the annular guide rail. The second motor is embedded in the middle of the second support plate. The bottom end of the output shaft of the second motor is fixedly connected to the winding wheel. The connecting rope is fixedly connected to the winding wheel, and the other end of the connecting rope is fixedly connected to the outer wall of the infrared camera. The bottom end of the connecting rope is equipped with a protective cover. Fixed arc plates are fixedly connected between the protective covers. The top end of the fixed arc plate is welded to the connecting plate, and the top end of the connecting plate is fixedly connected to the bottom outer wall of the second support plate.

[0009] Preferably, the limiting installation assembly includes a rotating opening, a guide plate, a sliding frame, a movable plate, a plug rod, a threaded sleeve, a rotating handle, and a threaded rod. Guide plates are welded to the inner walls of both sides of the installation groove. A sliding frame is slidably connected to the guide plate. A movable plate is fixedly connected to one side of the sliding frame. A plug rod is fixedly connected to one side of the outer wall of the movable plate. A threaded sleeve is fixedly connected to the other side of the outer wall of the movable plate. A threaded rod is threadedly connected to the inner thread of the threaded sleeve. A rotating handle is fixedly connected to the middle of the threaded rod. A rotating opening is symmetrically opened in the middle of the installation groove corresponding to the position of the rotating handle.

[0010] Preferably, a control box is fixedly installed on one outer wall of the mounting frame body, and the electrical output terminal of the control box is electrically connected to the electrical input terminal of the infrared camera.

[0011] Preferably, handles are symmetrically welded to one outer wall of the mounting frame body.

[0012] Preferably, the torsion spring is sleeved on the outer wall of the rotating shaft, and the number of torsion springs is eight.

[0013] Preferably, the number of the insertion rods is six, and the insertion rods are arranged in a rectangular shape.

[0014] The beneficial effects of this invention are: by using a rotating detection component, the infrared thermal imaging structure can be rotated for detection, eliminating the need to set up multiple infrared thermal imaging structures in various parts of the coal bunker, thus reducing detection costs and improving detection results;

[0015] An adjustment component is adopted, which can adjust the angle of the infrared thermal imaging structure, making it convenient to perform infrared thermal imaging on various parts of the coal bunker, avoiding any omissions in level detection, and improving the level detection effect.

[0016] The use of a limiting installation component allows the plug-in structure to be inserted into the coal bunker to fix the position of the detection equipment, eliminating the need for bolts and simplifying the installation process, thus improving the installation effect of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a bottom-view perspective structural diagram of the present invention;

[0019] Figure 3 This is a front sectional view of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 5 This is a flowchart illustrating the infrared image enhancement method based on generative adversarial networks of the present invention.

[0022] Figure 6 This is a diagram of the generator network structure of the present invention;

[0023] Figure 7 This is a diagram of the discriminator network structure of the present invention.

[0024] Marker explanation:

[0025] 1. Mounting frame body; 2. Rotation detection component; 3. Adjustment component; 4. Mounting slot; 5. Limiting mounting component; 6. Control box; 7. Handle; 201. Circular guide rail; 202. First support plate; 203. First motor; 204. Gear; 205. Slip ring; 206. External gear ring; 207. Vertical plate; 208. Rotating shaft; 209. Torsion spring; 2010. Infrared camera; 301. Second support plate; 302. Connecting plate; 303. Fixed arc plate; 304. Protective cover; 305. Second motor; 306. Rewinding wheel; 307. Connecting rope; 501. Rotating opening; 502. Guide plate; 503. Sliding frame; 504. Moving plate; 505. Insert rod; 506. Threaded sleeve; 507. Rotating handle; 508. Threaded rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] See Figures 1-3 A coal bunker level detection device utilizing infrared image composite enhancement technology includes a mounting frame body 1, a rotating detection component 2, an adjusting component 3, a mounting groove 4, and a limiting mounting component 5. The rotating detection component 2 is installed on the bottom outer wall of the mounting frame body 1, the adjusting component 3 is installed below the mounting frame body 1, the mounting groove 4 is opened inside the mounting frame body 1, and the limiting mounting component 5 is installed in the mounting groove 4; handles 7 are symmetrically welded on one outer wall of the mounting frame body 1, which can be used to move the mounting frame body 1 to facilitate the transportation of the equipment.

[0029] The rotation detection assembly 2 includes an annular guide rail 201, a first support plate 202, a first motor 203, a gear 204, a slip ring 205, an external gear ring 206, a vertical plate 207, a rotating shaft 208, a torsion spring 209, and an infrared camera 2010. An annular guide rail 201 is welded to the bottom outer wall of the mounting frame body 1. A slip ring 205 is slidably connected inside the annular guide rail 201. An external gear ring 206 is welded to the bottom outer wall of the slip ring 205. A gear 204 is meshed on one side outer wall of the external gear ring 206. A first support plate 202 is welded to one side outer wall of the annular guide rail 201. A first motor 203 is embedded in the first support plate 202, and one end of the output shaft of the first motor 203 is fixed to the top outer wall of the gear 204. Vertical plates 208 are distributed and welded to the bottom outer wall of the external gear ring 206. 7. An infrared camera 2010 is installed between the vertical plates 207. A rotating shaft 208 is symmetrically fixed to the infrared camera 2010, and the other end of the rotating shaft 208 is rotatably connected to the outer wall of the vertical plate 207. A torsion spring 209 is fixed to one side of the outer wall of the vertical plate 207, and the other end of the torsion spring 209 is fixed to the outer wall of the infrared camera 2010. The second motor 305 is started to reset the winding wheel 306. Then, under the action of the torsion spring 209, the rotating shaft 208 on the infrared camera 2010 is reset along the vertical plate 207. The torsion spring 209 is sleeved on the outer wall of the rotating shaft 208, and there are eight torsion springs 209. Under the action of the torsion springs 209, it is convenient for the rotating shaft 208 on the infrared camera 2010 to be reset along the vertical plate 207.

[0030] Working principle: The control box 6 is started to operate the infrared camera 2010, which detects the level of coal in the coal bunker. At this time, the first motor 203 on the first support plate 202 is started to rotate the gear 204, thereby driving the slip ring 205 on the outer gear ring 206 to rotate 90 degrees along the annular guide rail 201. The rotating shaft 208 on the vertical plate 207 drives the infrared camera 2010 to detect the level of coal in the coal bunker. The infrared thermal imaging structure can be rotated for detection, eliminating the need to set up multiple infrared thermal imaging structures in various parts of the coal bunker, reducing detection costs and improving detection effect.

[0031] Example 2

[0032] See Figures 1-3The adjustment component 3 includes a second support plate 301, a connecting plate 302, a fixed arc plate 303, a protective cover 304, a second motor 305, a winding wheel 306, and a connecting rope 307. The second support plate 301 is fixedly connected to the inner side of the annular guide rail 201. The second motor 305 is embedded in the middle of the second support plate 301. The bottom end of the output shaft of the second motor 305 is fixedly connected to the winding wheel 306. The connecting rope 307 is fixedly connected inside the winding wheel 306, and the other end of the connecting rope 307 is fixedly connected to the outer wall of the infrared camera 2010. The bottom end of the connecting rope 307 is equipped with a protective cover 304. The fixed arc plates 303 are fixedly connected between the protective covers 304. The top end of the fixed arc plate 303 is welded to the connecting plate 302, and the top end of the connecting plate 302 is fixedly connected to the bottom outer wall of the second support plate 301.

[0033] The second motor 305 on the second support plate 301 is activated to rotate the winding wheel 306, which in turn winds up the connecting rope 307. This causes the connecting rope 307 to move along the protective cover 304 on the fixed arc plate 303. The connecting rope 307 drives the rotating shaft 208 on the infrared camera 2010 to rotate along the vertical plate 207, thereby adjusting the angle of the infrared camera 2010 and enabling detection of various locations within the coal bunker. When the infrared camera 2010 needs to be reset, the second motor 305 is activated to reset the winding wheel 306. Then, under the action of the torsion spring 209, the rotating shaft 208 on the infrared camera 2010 is reset along the vertical plate 207. The protective cover 304 also protects the connecting rope 307, preventing breakage. The angle of the infrared thermal imaging structure can be adjusted, facilitating infrared thermal imaging of various locations within the coal bunker, preventing omissions in level detection, and improving the detection effect.

[0034] Example 3

[0035] See Figures 2-4 The limiting installation component 5 includes a rotating port 501, a guide plate 502, a sliding frame 503, a moving plate 504, a plug rod 505, a threaded sleeve 506, a rotating handle 507, and a threaded rod 508. Guide plates 502 are welded to the inner walls of both sides of the installation groove 4. A sliding frame 503 is slidably connected to the guide plate 502. A moving plate 504 is fixedly connected to one side of the sliding frame 503. A plug rod 505 is fixedly connected to one side of the outer wall of the moving plate 504. A threaded sleeve 506 is fixedly connected to the other side of the outer wall of the moving plate 504. A threaded rod 508 is threadedly connected to the threaded sleeve 506. A rotating handle 507 is fixedly connected to the middle of the threaded rod 508. A rotating port 501 is symmetrically opened in the middle of the installation groove 4 corresponding to the position of the rotating handle 507.

[0036] First, the main body 1 of the mounting frame is placed on top of the coal bunker. Then, the rotating handle 507 is rotated through the rotating port 501, causing the threaded rod 508 to rotate. Then, under the action of the threaded sleeve 506, the threaded sleeve 506 is moved, causing the sliding frame 503 on the moving plate 504 to move along the guide plate 502, so that the insertion rod 505 on the moving plate 504 is inserted into the inner wall of the coal bunker, thus fixing the position of the main body 1 of the mounting frame. The insertion structure can be inserted into the inside of the coal bunker to fix the position of the testing equipment. No bolt structure is required for position fixing, which simplifies the installation process and improves the installation effect of the equipment.

[0037] Example 4

[0038] See Figures 5-7 A control box 6 is fixedly installed on one outer wall of the mounting frame body 1, and the electrical output terminal of the control box 6 is electrically connected to the electrical input terminal of the infrared camera 2010. The infrared camera 2010 can be controlled through the control box 6 to perform composite enhancement of the infrared image of the infrared camera 2010. The process of infrared image composite enhancement is as follows:

[0039] S1 Preprocessing

[0040] S1.1 Noise Reduction Processing

[0041] Infrared images are susceptible to thermal noise due to the characteristics of the equipment, which may lead to loss of image details; therefore, the image is first denoised.

[0042] Median filtering: Removes salt-and-pepper noise using median filtering;

[0043] Select a 3×3 neighborhood window and calculate the median of the pixel values ​​within the window as the new value of the center pixel;

[0044] I median (x,y)=median9({I(x ′ ,y ′ )∣(x ′ ,y ′ )∈N(x,y)})

[0045] This effectively removes noise from the image while preserving its edge information;

[0046] S1.2 Grayscale Transformation Enhancement

[0047] S1.2.1 Histogram Equalization

[0048] Infrared images with insufficient contrast will have problems displaying details. Therefore, histogram equalization is used to increase the contrast of the image, making the contrast between the target area and the background more obvious.

[0049] Histogram equalization: Adjusting grayscale values ​​using the cumulative distribution function (CDF);

[0050] Perform histogram analysis on the image, calculate the cumulative distribution function (CDF), and then map the gray values ​​of the original image to a new range using the following formula:

[0051]

[0052] This makes the grayscale range of the entire image more uniform, thereby enhancing the contrast;

[0053] S1.2.2 Contrast Stretching

[0054] Assume the grayscale value range of the image is I min and I max Contrast stretching expands the grayscale values ​​of an image to a new range [0, 255].

[0055]

[0056] This can significantly improve the contrast of the target area;

[0057] Highlight the target area by adjusting brightness and contrast;

[0058] S1.2.3 Gamma Transformation

[0059] Gamma transformation is a non-linear method that adjusts image brightness to increase or decrease image brightness and contrast.

[0060] The following formula is applied to transform each pixel value I(x,y):

[0061] I gamma (x,y)=round(I enhanced (x,y) γ )

[0062] Typically, γ>1 is used for brightness enhancement, and γ<1 is used for shadow detail enhancement.

[0063] S2 Deep Learning Model Design

[0064] S2.1 Network Model Selection: Pix2Pix

[0065] Pix2Pix is ​​a model based on Conditional Generative Adversarial Networks (cGANs) suitable for image-to-image transformation tasks. In infrared image target enhancement, it can take low-quality infrared images preprocessed by traditional methods as input and generate high-quality enhanced images. The model includes a generator and a discriminator, and its working principle is as follows: Figure 5 As shown;

[0066] S2.2 Generator

[0067] The generator structure of the Pix2Pix network is as follows: Figure 6 As shown; the generator uses an eight-layer U-shaped network structure, with eight convolutional layers and eight transposed convolutional layers; the encoder uses a convolution-Leakyrelu activation function structure in the lowest and highest layers, and adds BatchNorm in the middle of this structure to accelerate convergence and suppress overfitting; the decoder decodes the encoded feature vector through transposed convolution;

[0068] S2.3 Discriminator

[0069] The discriminator uses a PatchGAN structure, such as... Figure 7 As shown, this structure not only avoids the computational waste of traditional algorithms on a large number of useless regions, but also learns and captures the local features of the image more precisely, effectively handles the overall problem, and greatly improves the stability and accuracy of the structure.

[0070] S3 Results Fusion

[0071] S3.1 Feature Fusion

[0072] Image I enhanced by traditional methods gamma and images generated by deep learning DL Perform weighted fusion:

[0073] I fused =α·I gamma +(1-α)·I DL

[0074] S3.2 Post-processing

[0075] The Sobel operator is used to enhance the edges of the fused image. The Sobel operator is often used for image sharpening and edge detection. It detects edge information by calculating the approximate first derivative of the image gray value in the horizontal and vertical directions, thereby highlighting the contours and details of the image and making the image look clearer and sharper.

[0076] The Sobel operator performs convolution calculations in the horizontal and vertical directions to obtain the gradient map of the image.

[0077]

[0078] Calculate the gradient magnitude:

[0079]

[0080] Among them, I x and I yThese are the gradients of the image in the x and y directions, respectively;

[0081] The grayscale values ​​of the fused image are weighted and summed with the calculated gradient magnitudes according to certain coefficients to obtain the grayscale value I after sharpening by the Sobel operator. sharp (x, y), the calculation formula is as follows:

[0082] I sharp (x,y)=I fused (x,y)+λ×G(x,y)

[0083] Wherein, λ is the sharpening coefficient (which can be adjusted according to the actual situation, and is generally taken as a small positive value, such as between 0.1 and 1). This coefficient is used to control the degree of sharpening and avoid over-sharpening, which would result in an unnatural effect in the image.

[0084] In this way, the edges in the image are enhanced, which helps to display the target area more clearly.

[0085] 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 coal bunker level detection device utilizing infrared image composite enhancement technology, characterized in that, The mounting frame includes a main body (1), a rotation detection component (2), an adjustment component (3), a mounting groove (4), and a limiting mounting component (5). The rotation detection component (2) is installed on the bottom outer wall of the main body (1), the adjustment component (3) is installed below the main body (1), the mounting groove (4) is provided inside the main body (1), and the limiting mounting component (5) is installed inside the mounting groove (4). The rotation detection assembly (2) includes an annular guide rail (201), a first support plate (202), a first motor (203), a gear (204), a slip ring (205), an external gear ring (206), a vertical plate (207), a rotating shaft (208), a torsion spring (209), and an infrared camera (2010). An annular guide rail (201) is welded to the bottom outer wall of the mounting frame body (1). A slip ring (205) is slidably connected inside the annular guide rail (201). An external gear ring (206) is welded to the bottom outer wall of the slip ring (205). A gear (204) is meshed on one side outer wall of the external gear ring (206). A first support plate (202) is welded to one side outer wall of the annular guide rail (201). A first motor (203) is embedded in the first support plate (202), and one end of the output shaft of the first motor (203) is fixed to the top outer wall of the gear (204). Vertical plates (207) are welded to the bottom outer wall of the external toothed ring (206). An infrared camera (2010) is installed between the vertical plates (207). A rotating shaft (208) is symmetrically fixed to the infrared camera (2010), and the other end of the rotating shaft (208) is rotatably connected to the outer wall of the vertical plate (207). A torsion spring (209) is fixed to one side of the outer wall of the vertical plate (207), and the other end of the torsion spring (209) is fixed to the outer wall of the infrared camera (2010). The adjustment assembly (3) includes a second support plate (301), a connecting plate (302), a fixed arc plate (303), a protective cover (304), a second motor (305), a winding wheel (306), and a connecting rope (307). The second support plate (301) is fixedly connected to the inner side of the annular guide rail (201). The second motor (305) is embedded in the middle of the second support plate (301). The winding wheel (307) is fixedly connected to the bottom end of the output shaft of the second motor (305). 06), connecting ropes (307) are fixedly connected inside the winding reel (306), and the other end of the connecting ropes (307) is fixedly connected to the outer wall of the infrared camera (2010). A protective cover (304) is installed at the bottom end of the connecting ropes (307). Fixed arc plates (303) are fixedly connected between the protective covers (304). A connecting plate (302) is welded to the top of the fixed arc plate (303), and the top of the connecting plate (302) is fixedly connected to the second support plate ( ). On the bottom outer wall of 301); the limiting installation assembly (5) includes a rotating port (501), a guide plate (502), a sliding frame (503), a moving plate (504), a plug rod (505), a threaded sleeve (506), a rotating handle (507), and a threaded rod (508). Guide plates (502) are welded to the inner walls of both sides of the mounting groove (4). A sliding frame (503) is slidably connected to the guide plate (502). A fixed connection is made to one side of the sliding frame (503). A movable plate (504) has a fixedly connected insert rod (505) on one side of its outer wall and a fixedly connected threaded sleeve (506) on the other side of its outer wall. A threaded rod (508) is threadedly connected inside the threaded sleeve (506) and a rotating handle (507) is fixedly connected to the middle of the threaded rod (508). A rotating opening (501) is symmetrically opened in the middle of the mounting groove (4) corresponding to the position of the rotating handle (507).

2. The coal bunker level detection device utilizing infrared image composite enhancement technology according to claim 1, characterized in that, A control box (6) is fixedly installed on one side of the outer wall of the mounting frame body (1), and the electrical output terminal of the control box (6) is electrically connected to the electrical input terminal of the infrared camera (2010).

3. The coal bunker level detection device utilizing infrared image composite enhancement technology according to claim 1, characterized in that, Handles (7) are symmetrically welded to one side of the outer wall of the mounting frame body (1).

4. A coal bunker level detection device utilizing infrared image composite enhancement technology according to claim 1, characterized in that, The torsion spring (209) is sleeved on the outer wall of the rotating shaft (208), and there are eight torsion springs (209).

5. A coal bunker level detection device utilizing infrared image composite enhancement technology according to claim 1, characterized in that, The number of the inserts (505) is six, and the inserts (505) are arranged in a rectangular shape.

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