Coal conveying belt intelligent monitoring mechanism based on image recognition

Abstract

The invention relates to the technical field of belt monitoring, in particular to a coal conveying belt intelligent monitoring mechanism based on image recognition, which comprises a high-speed industrial camera and a linear laser, and the high-speed industrial camera and the linear laser are connected above a stabilizing frame; the two ends of the stabilizing frame are each provided with a receding opening used for being connected with the high-speed industrial camera and the linear laser in an inserted mode, the inner side wall of the stabilizing frame is provided with an inner groove used for guiding in the moving process of the high-speed industrial camera and the linear laser, and the top of the inner groove is provided with a power supply contact used for providing electric energy for the high-speed industrial camera and the linear laser. And a floating guide rail for supporting the high-speed industrial camera and the linear laser is mounted at the bottom of the inner groove. Through cooperative arrangement of the abdicating opening and the supporting frame, the shell of the high-speed industrial camera and the shell of the linear laser can be conveniently installed and taken down, the high-speed industrial camera and the linear laser can be rapidly replaced in time when damaged, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of belt monitoring, in particular to an intelligent monitoring mechanism for a coal conveying belt based on image recognition. Background Art

[0002] Coal conveyor belts are widely used in coal mining, processing, transportation, and material transportation in the power, chemical and other industries. In power plants, it is one of the key equipment to ensure the continuous and reliable operation of the coal supply system. The coal conveyor belt uses the principle of connecting the conveyor belt end to end to form a closed circulation path, and keeps it in a tensioned state through a tensioning device. Driven by the active motor, friction is generated between the belt and the drive wheel to achieve power transmission and continuous coal transportation.

[0003] The coal conveyor belt is subjected to the weight of coal, humidity, temperature and other factors for a long time, which may easily lead to aging and fatigue damage of the material itself, and then cracks. If the cracks are not treated in time, they may gradually expand and eventually cause the belt to break. The broken belt may splash and cause harm to the surrounding workers;

[0004] Long-term downtime will not only cause production delays, but may also affect the stability of the entire supply chain. Especially in key industries such as electricity, the downtime of coal conveyors may lead to insufficient energy supply, which in turn has a wider impact on the social economy; After the belt is torn, if it continues to run, it may cause damage to other parts of the belt conveyor, such as rollers, idlers, etc. This will further increase the cost and complexity of maintenance. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides an intelligent monitoring mechanism for a coal conveyor belt based on image recognition.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an intelligent monitoring mechanism for coal conveyor belt based on image recognition, including a high-speed industrial camera and a linear laser, which are connected above a stabilizing frame; There are openings at both ends of the stabilizing frame for plugging in high-speed industrial cameras and linear lasers. An inner groove for guiding the high-speed industrial camera and the linear laser during movement is provided on the inner side wall of the stabilizing frame, and a power supply contact for providing electric energy to the high-speed industrial camera and the linear laser is provided on the top of the inner groove; A floating guide rail for supporting a high-speed industrial camera and a linear laser is installed at the bottom of the inner groove.

[0007] Preferably, the floating guide rail is formed by splicing a plurality of track pieces, the thickness of the floating guide rail is 4-6 mm, and the splicing parts are plug-in settings; the bottom of each track piece of the floating guide rail is fixedly connected to the first cylinder.

[0008] Preferably, a support frame is provided outside the high-speed industrial camera and the linear laser for supporting, and an adjustment motor for driving the high-speed industrial camera and the linear laser to rotate is provided on one side of the support frame.

[0009] Preferably, both sides of the upper side of the stabilizing frame are provided with sliding grooves, a bidirectional threaded rod is rotatably arranged in the sliding groove, and one end of the bidirectional threaded rod is fixedly connected to an adjusting motor; The outer wall of the bidirectional threaded rod is fixedly sleeved with a moving block, the outer wall of the support frame is fixedly provided with a guide block, and the guide block and the moving block are magnetically arranged.

[0010] Preferably, a moving wheel is rotatably provided on the bottom side wall of the support frame, the moving wheel is cooperated with the floating guide rail, a storage groove is opened in the middle of the moving wheel, a second cylinder is fixedly connected in the storage groove, and a conductive sheet is fixedly connected to the telescopic end of the second cylinder.

[0011] Preferably, a micro air pump is provided on one side of the housing of the high-speed industrial camera and the linear laser, and a lens for preventing dust from entering is installed in the middle of the housing of the high-speed industrial camera and the linear laser; A circle of air jet holes is arranged around the lens, and the air jet holes are connected to the air outlet end of the micro air pump.

[0012] Preferably, the high-speed industrial camera and the linear laser housing are provided with cleaning parts, and the cleaning parts are driven by a servo motor; The output end of the micro air pump is connected to the cleaning piece through a first air pipe.

[0013] Preferably, the cleaning member comprises a mounting shell, in which a control member is rotatably arranged, the control member is hollow, and a plurality of through holes are arranged on the side wall.

[0014] Preferably, a sponge strip for cleaning the lens surface is slidably inserted into the bottom of the control member.

[0015] Preferably, side sealing sheets are fixedly provided on both sides of the control member, and cleaning air holes are provided on both sides of the mounting shell; the side sealing sheets are arranged in coordination with the cleaning air holes.

[0016] Preferably, a control ring is rotatably arranged in the housing of the high-speed industrial camera and the linear laser, and the control ring is placed in a ring gallery that penetrates the air jet hole, and the control ring is arranged in coordination with the air jet hole.

[0017] Preferably, a slide rod is fixedly provided on the top of the control ring, a guide groove is provided on one side of the mounting shell, and one side of the slide rod is slidably connected to the guide groove.

[0018] Beneficial effects of the present invention:

[0019] (1) The invention discloses an intelligent monitoring mechanism for a coal conveyor belt based on image recognition. Compared with the prior art, the invention can increase the effective working time by 10%-20%, reduce the downtime for inspection by 1%-2%, improve the equipment utilization efficiency by 2%-3%, save manpower for regular replacement and maintenance of equipment, monitor the tearing, overlapping and misalignment of the coal conveyor belt, conduct health assessment of the coal conveyor belt and accurately warn of risks, thereby improving the safety production efficiency and risk prevention and control capabilities of the coal conveyor belt.

[0020] (2) The image recognition-based intelligent monitoring mechanism for coal conveyor belts described in the present invention can facilitate the installation and removal of the housings of high-speed industrial cameras and linear lasers by coordinating the clearance opening with the support frame. When the high-speed industrial cameras and linear lasers are damaged, they can be replaced promptly and quickly, which is convenient and quick.

[0021] (3) The present invention discloses an intelligent monitoring mechanism for a coal conveyor belt based on image recognition. When the output end of the servo motor rotates, the mounting shell is driven to rotate along the surface of the lens. When the lens surface rotates, the control ring is driven to rotate via the slide bar. The control ring can block half of the air injection holes. The mounting shell can push the control ring to open more of the air injection holes on the uncleaned side of the lens, so that the gas can be blown more concentratedly to the uncleaned side of the lens, thereby improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a connection diagram of the linear laser and the stabilizing frame of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the stabilizing frame of the present invention; Figure 4 It is a cross-sectional view of the stabilizer frame of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the control ring of the present invention; Figure 8 It is an exploded view of the cleaning part of the present invention; Fig. 9 Obtaining a picture processing graph for the present invention; Fig.10 This is a crack diagram of the coal conveyor belt of the present invention.

[0024] In the figure: 100, high-speed industrial camera; 200, linear laser; 201, jet hole; 202, lens; 204, servo motor; 300, stabilizing frame; 301, bidirectional threaded rod; 302, yielding port; 303, floating guide rail; 306, first cylinder; 310, adjusting motor; 400, supporting frame; 401, guide block; 406, control ring; 407, sliding rod; 430, moving wheel; 431, conductive sheet; 432, second cylinder; 500, micro air pump; 501, first air pipe; 600, cleaning part; 601, cleaning hole; 606, guide groove; 607, control part; 608, side sealing sheet; 609, sponge strip. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] Embodiment 1:

[0027] like Figure 1-Figure 10 As shown, an intelligent monitoring mechanism for a coal conveyor belt based on image recognition of the present invention comprises a high-speed industrial camera 100 and a linear laser 200, wherein the high-speed industrial camera 100 and the linear laser 200 are connected above a stabilizing frame 300; A clearance opening 302 is provided at both ends of the stabilizing frame 300 for plugging in the high-speed industrial camera 100 and the linear laser 200. An inner groove is provided on the inner wall of the stabilizing frame 300 for guiding the high-speed industrial camera 100 and the linear laser 200 during movement. A power supply contact for providing electrical energy to the high-speed industrial camera 100 and the linear laser 200 is provided at the top of the inner groove; a floating guide rail 303 for supporting the high-speed industrial camera 100 and the linear laser 200 is installed at the bottom of the inner groove.

[0028] The monitoring mechanism is suitable for conveyor belt width: ≤1400mm, suitable belt speed: 0~5m / s, minimum tear detection accuracy: 4mm, working environment: 0-40℃.

[0029] The parameters of the high-speed industrial camera 100 are: resolution 2448 (H) × 2048 (V), frame rate 79fps, sensor type 2 / 3" SONY IMX264CMOS, pixel size 3.45μm × 3.45μm, image data format Mono8 / Mono10, signal-to-noise ratio 39dB, clarity >1661 lines, data interface is Gigabit Ethernet (1000Mbit / s), power consumption <3W@12VDC, operating temperature is 0℃~45℃, and operating humidity is 10%~80%.

[0030] One side of the high-speed industrial camera 100 is equipped with a mining explosion-proof fill light, and the parameters of the mining explosion-proof fill light are as follows: The best fill light distance is 16m~25m, the luminous angle is 40°, the light source type is an original imported high-power white light LED, the number of LED lamp beads is ≥16, the response time is ≤20us, the design life is ≥50000 hours, the maximum power is 36W, the working temperature is -40℃~+70℃, the working humidity is 10%~90%, and the overall dimensions shall not exceed 160mm(W)×220mm(H)×130mm(D).

[0031] Installation method: side installation (bracket rotation angle -90°~+90°), linear laser 200: 110° 100~150MW continuous laser.

[0032] The monitoring data is collected and processed through the computing platform and transmitted through the network switch. The accuracy of longitudinal tear detection during the working process of the monitoring agency is: 100%; the accuracy of alarm for existing wounds and injuries is higher than 99%; the false alarm rate of all wounds and injuries is no more than 1%, which includes false alarms of wounds and misjudgments of injury levels.

[0033] The high-speed industrial camera 100 and the linear laser 200 can be used to obtain real-time images. The computing host runs the longitudinal tear recognition algorithm, processes the original image and calculates the result, and outputs the video and alarm result to the back-end platform. The processing process is referenced in Fig. 9 shown.

[0034] The setting of the clearance opening 302 can facilitate the installation and removal of the housing of the high-speed industrial camera 100 and the linear laser 200. When the high-speed industrial camera 100 and the linear laser 200 are damaged, they can be replaced promptly and quickly, which is convenient and quick. At the same time, the setting of the floating guide rail 303 can keep the high-speed industrial camera 100 and the linear laser 200 in continuous contact with the power supply contacts to ensure their normal operation.

[0035] Specifically, the floating guide rail 303 is formed by splicing a plurality of rail pieces, the floating guide rail 303 has a thickness of 4-6 mm, and is plug-connected at the splicing portion; the bottom of each rail piece of the floating guide rail 303 is fixedly connected to the first cylinder 306 .

[0036] The floating guide rail 303 is made up of multiple track pieces. When one of them is damaged, it can be replaced in time to save replacement costs. The thickness of the floating guide rail 303 is 4-6mm, which can achieve the preset rigidity and be lightweight. The first cylinder 306 can support the track piece. During installation, different lengths of the first cylinder 306 can be selected according to different specifications for installation, which has a wider adaptability.

[0037] Specifically, a support frame 400 is disposed outside the high-speed industrial camera 100 and the linear laser 200 for supporting, and a driving motor for driving the high-speed industrial camera 100 and the linear laser 200 to rotate is disposed on one side of the support frame 400.

[0038] The rotation of the driving motor can drive the high-speed industrial camera 100 and the linear laser 200 to rotate at a certain angle, so as to achieve all-round monitoring of the transmission process of the coal conveyor belt and avoid blind spots in monitoring. The support frame 400 can move along the stabilizing frame 300, and at the same time drive the high-speed industrial camera 100 and the linear laser 200 to move synchronously, and further adjust the positions of the high-speed industrial camera 100 and the linear laser 200.

[0039] Specifically, sliding grooves are provided on both sides of the upper side of the stabilizing frame 300, and a bidirectional threaded rod 301 is rotatably provided in the sliding groove, and an adjusting motor 310 is fixedly connected to one end of the bidirectional threaded rod 301; A moving block is fixedly sleeved on the outer wall of the bidirectional threaded rod 301, and a guide block 401 is fixedly arranged on the outer wall of the support frame 400, and the guide block 401 is magnetically attracted to the moving block; A moving wheel 430 is rotatably provided on the bottom side wall of the support frame 400. The moving wheel 430 is matched with the floating guide rail 303. A storage groove is opened in the middle of the moving wheel 430. A second cylinder 432 is fixedly connected in the storage groove. A conductive sheet 431 is fixedly connected to the telescopic end of the second cylinder 432.

[0040] By adjusting the output end of the motor 310 to rotate, the bidirectional threaded rod 301 is driven to rotate. At this time, the moving block will move along the outer wall of the bidirectional threaded rod 301 in the direction of approaching or moving away from each other. The moving block and the guide block 401 are magnetically arranged to facilitate the disassembly and separation of the support frame 400 and the stabilizing frame 300. At the same time, the setting of the moving wheel 430 can increase the pressure between the guide block 401 and the moving block, thereby achieving the effect of increasing the friction between them, ensuring that the high-speed industrial camera 100 and the linear laser 200 can be driven to move during the movement of the moving block, which is convenient and quick.

[0041] Embodiment 2:

[0042] It is basically the same as the first embodiment. Figure 1 , Figure 2 , Figure 5-9 As shown, the difference is that a micro air pump 500 is provided on one side of the housing of the high-speed industrial camera 100 and the linear laser 200, and a lens 202 for preventing dust from entering is installed in the middle of the housing of the high-speed industrial camera 100 and the linear laser 200; a circle of jet holes 201 is provided around the lens 202, and the jet holes 201 are connected to the air outlet end of the micro air pump 500.

[0043] Specifically, a cleaning piece 600 is disposed on the housing surface of the high-speed industrial camera 100 and the linear laser 200 , and the cleaning piece 600 is driven by a servo motor 204 ; the output end of the micro air pump 500 is connected to the cleaning piece 600 through a first air pipe 501 .

[0044] The micro air pump 500 is connected to the cleaning piece 600 through the first air pipe 501, and can continuously pump gas into the cleaning piece 600. The lens 202 is cleaned through the setting of the cleaning piece 600. The cleaning piece 600 can not only clean by wiping, but also by blowing. During the process of transporting coal, a large amount of coal dust will adhere to the lens 202. The dust on the surface of the lens 202 can be cleaned through the air jet hole 201.

[0045] Specifically, the cleaning member 600 includes a mounting shell, in which a control member 607 is rotatably disposed. The control member 607 is hollow and has a plurality of through holes on its side wall.

[0046] A sponge strip 609 for cleaning the surface of the lens 202 is slidably inserted at the bottom of the control member 607. Side sealing sheets 608 are fixedly arranged on both sides of the control member 607, and cleaning air holes 601 are opened on both sides of the mounting shell; the side sealing sheets 608 and the cleaning air holes 601 are arranged in coordination.

[0047] The servo motor 204 drives the mounting shell to rotate during the rotation process. During the rotation process, the mounting shell drives the control member 607 to rotate, which can drive the side sealing piece 608 to rotate synchronously. The friction between the sponge strip 609 and the surface of the lens 202 will cause the housing control member 607 to tilt. The side sealing piece 608 rotates to open the cleaning air hole 601 on the side close to the lens 202 to be cleaned, and the other side sealing piece 608 rotates to block the corresponding cleaning air hole 601, which can concentrate the gas to clean the uncleaned lens 202. The control member 607 is hollow and the side wall is provided with multiple groups of through holes. At the same time, the control member 607 is made of lightweight plastic material to achieve lightweight setting of components, and the setting of through holes can facilitate the flow of gas.

[0048] Specifically, a control ring 406 is rotatably arranged in the housing of the high-speed industrial camera 100 and the linear laser 200, and the control ring 406 is placed in a ring corridor that is connected to the jet hole 201, and the control ring 406 is arranged in coordination with the jet hole 201. A slide bar 407 is fixedly arranged on the top of the control ring 406, and a guide groove 606 is opened on one side of the installation housing, and one side of the slide bar 407 is slidably connected to the guide groove 606.

[0049] During the rotation of the output end of the servo motor 204, the mounting shell is driven to rotate along the surface of the lens 202. When the surface of the lens 202 rotates, the control ring 406 is driven to rotate through the slide bar 407. The control ring 406 can block half of the air jet holes 201. The mounting shell can push the control ring 406 to open more of the air jet holes 201 on the uncleaned side of the lens 202, so that the gas can be blown more concentratedly to the uncleaned side of the lens 202, thereby improving the cleaning efficiency.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An intelligent monitoring mechanism for a coal conveyor belt based on image recognition, comprising a high-speed industrial camera (100) and a linear laser (200), characterized in that: A high-speed industrial camera (100) and a linear laser (200) are connected above a stabilizing frame (300); A clearance opening (302) is provided at both ends of the stabilizing frame (300) for plugging in a high-speed industrial camera (100) and a linear laser (200). An inner groove for guiding the high-speed industrial camera (100) and the linear laser (200) during movement is provided on the inner side wall of the stabilizing frame (300), and a power supply contact for providing electric energy to the high-speed industrial camera (100) and the linear laser (200) is provided on the top of the inner groove; A floating guide rail (303) for supporting a high-speed industrial camera (100) and a linear laser (200) is installed at the bottom of the inner groove.

2. According to claim 1, the intelligent monitoring mechanism for coal conveyor belt based on image recognition is characterized in that: The floating guide rail (303) is formed by splicing a plurality of track pieces. The floating guide rail (303) has a thickness of 4-6 mm and is spliced ​​at the splicing locations. The bottom of each track piece of the floating guide rail (303) is fixedly connected to a first cylinder (306).

3. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 1 is characterized in that: A support frame (400) for supporting the high-speed industrial camera (100) and the linear laser (200) is disposed outside the high-speed industrial camera (100) and the linear laser (200), and an adjustment motor (310) for driving the high-speed industrial camera (100) and the linear laser (200) to rotate is disposed on one side of the support frame (400).

4. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 3 is characterized in that: Sliding grooves are provided on both sides of the upper side of the stabilizing frame (300), and a bidirectional threaded rod (301) is rotatably arranged in the sliding groove, and one end of the bidirectional threaded rod (301) is fixedly connected to an adjusting motor (310); A moving block is fixedly sleeved on the outer wall of the bidirectional threaded rod (301), and a guide block (401) is fixedly arranged on the outer wall of the support frame (400), and the guide block (401) and the moving block are arranged by magnetic attraction.

5. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 3 is characterized in that: A moving wheel (430) is rotatably arranged on the side wall at the bottom of the support frame (400), the moving wheel (430) being arranged in cooperation with the floating guide rail (303), a receiving groove being provided in the middle of the moving wheel (430), a second cylinder (432) being fixedly connected in the receiving groove, and a conductive sheet (431) being fixedly connected to the telescopic end of the second cylinder (432).

6. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 1 is characterized in that: A micro air pump (500) is provided on one side of the housing of the high-speed industrial camera (100) and the linear laser (200), and a lens (202) for preventing dust from entering is installed in the middle of the housing of the high-speed industrial camera (100) and the linear laser (200); A circle of air jet holes (201) is arranged around the lens (202), and the air jet holes (201) are connected to the air outlet end of the micro air pump (500).

7. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 6 is characterized in that: A cleaning piece (600) is provided on the housing surface of the high-speed industrial camera (100) and the linear laser (200), and the cleaning piece (600) is driven by a servo motor (204); The output end of the micro air pump (500) is connected to the cleaning piece (600) via a first air pipe (501).

8. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 7 is characterized in that: The cleaning member (600) comprises a mounting shell, in which a control member (607) is rotatably arranged. The control member (607) is hollow and has a side wall provided with a plurality of groups of through holes.

9. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 8, characterized in that: A sponge strip (609) for cleaning the surface of the lens (202) is slidably inserted into the bottom of the control member (607).

10. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 9, characterized in that: Side sealing sheets (608) are fixedly arranged on both sides of the control member (607), and cleaning air holes (601) are opened on both sides of the installation shell; the side sealing sheets (608) are arranged in coordination with the cleaning air holes (601).

11. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 8, characterized in that: A control ring (406) is rotatably arranged in the housing of the high-speed industrial camera (100) and the linear laser (200); the control ring (406) is placed in a ring gallery that is connected to the air jet hole (201); and the control ring (406) is arranged in coordination with the air jet hole (201).

12. The intelligent monitoring mechanism for coal conveyor belt based on image recognition according to claim 11, characterized in that: A slide bar (407) is fixedly arranged on the top of the control ring (406), a guide groove (606) is provided on one side of the mounting shell, and one side of the slide bar (407) is slidably connected to the guide groove (606).

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