Monitoring device and monitoring method based on digital twinning technology

Abstract

The invention discloses a monitoring device and monitoring method based on a digital twinning technology, and relates to the technical field of monitoring devices.The monitoring device comprises a barrel, a lens and a camera body and further comprises a cleaning assembly; the cleaning assembly comprises a mounting box and an air inlet pipe; the mounting box is a hollow rectangular body with a circular through groove in the middle, and one end of the cylinder extends into the through groove of the mounting box; the camera body is fixed in the cylinder close to the mounting box, the lens is located in front of the camera body, and the surface of the lens is lower than the surface of the mounting box; a shielding piece is fixed to the position, close to the lens, of the installation box and is an annular transparent silica gel piece composed of a plurality of arc-shaped pieces, gaps exist between the arc-shaped pieces, and the unoccupied end of the shielding piece makes contact with the surface of the lens. A gas soft bag is fixed at the top in the mounting box; the surface of the concave lens can be cleaned, the quality of images shot by monitoring is ensured, and the underground operation condition of a coal mine can be conveniently observed in time.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring devices, and in particular to a monitoring device and a monitoring method based on digital twin technology. Background Art

[0002] Monitoring equipment is widely used in many fields and places. In dangerous environments such as mining operations, monitoring equipment is used to monitor the compliance of operations and ensure the safety of workers. Among them, cameras are an important component of monitoring equipment. Cameras are used to capture video images and provide real-time images of the monitored area. Since a large amount of coal dust is generated during coal mining operations, a large amount of coal dust particles accumulate on the camera lens, causing lens contamination. In addition, the lens of the mining camera is not in the same plane as the outer shell. The lens is recessed into the outer shell, making it difficult to clean the coal dust particles on the lens surface, thereby affecting the quality of the monitoring image and making it inconvenient to observe the conditions of underground coal mine operations in a timely manner. Summary of the Invention

[0003] The embodiments of the present application provide a monitoring device and a monitoring method based on digital twin technology, thereby solving the problem in the prior art that the lens of the mining camera and the outer shell are not in the same plane, and the lens is recessed into the outer shell, making it difficult to clean the coal powder particles on the surface of the lens.

[0004] The embodiment of the present application provides a monitoring device based on digital twin technology, including a barrel, a lens, and a camera body, and also includes a cleaning component; The cleaning assembly includes a mounting box and an air inlet pipe; The installation box is a rectangular body with a hollow interior and a circular through-slot in the middle, and one end of the cylinder extends into the through-slot of the installation box; The camera body is fixed in the barrel near the mounting box, the lens is located in front of the camera body, and the surface of the lens is lower than the surface of the mounting box; A shielding sheet is fixed on the mounting box near the lens. The shielding sheet is a ring-shaped transparent silicone sheet composed of multiple arc-shaped sheets. There are gaps between the multiple arc-shaped sheets, and the free end of the shielding sheet contacts the surface of the lens. A gas bag is fixed on the top of the installation box. The gas bag is a long, light-transmitting silicon capsule. One end of the air inlet pipe extends into the gas bag, and the other end of the air inlet pipe is connected to the air pump. A cleaning portion is fixed on the gas capsule near the shielding piece. The cleaning portion includes a cleaning strip. The cleaning strip is a triangular light-transmitting silicone plate, and its tip can contact the surface of the lens.

[0005] Furthermore, the cleaning unit further includes a ventilation chamber; The ventilation chamber is a transparent plastic box with a hollow interior and is fixed to the bottom of the gas bag. A branch pipe is fixed to the air inlet pipe. The branch pipe is a telescopic pipe and its free end extends into the ventilation chamber. The bottom of the ventilation chamber is fixed with an air jet plate, which is a high-transmittance plastic plate with a hollow interior and an air outlet on one side of the long side, and is connected to the interior of the ventilation chamber; The air outlet of the air jet plate is inclined toward the lens, and the horizontal length of the air jet plate is not less than the diameter of the lens; The cleaning bar is fixed on the ventilation chamber at one side close to the lens, and the air injection plate is located below the cleaning bar.

[0006] Furthermore, the cleaning strip is a rectangular strip and a cleaning gauze is fixed on the side close to the lens; The cleaning gauze is a transparent gauze and is in contact with the lens surface.

[0007] Furthermore, the cleaning assembly further includes a dust removal unit; The dust removal unit includes a material collection box; The material collection box is a rectangular body with a hollow interior and an opening near the top of the installation box. A dust outlet is provided at the bottom of the installation box near the material collection box, and the dust outlet and the opening of the material collection box coincide with each other. The aggregate box is filled with clean water, which is used to absorb coal powder particles.

[0008] Furthermore, a water spray box 1 is fixed on the top of the installation box, and a plurality of nozzles 1 are evenly fixed on the water spray box 1. Water spray boxes 2 are fixed on both sides of the installation box, and a plurality of nozzles 2 are evenly fixed on the water spray box 2. A water pump is fixed on one side of the collecting box, and two diversion pipes and a water pipe are fixed on the water outlet end of the water pump; The remaining end of one of the diversion pipes extends into the second water spray box, and the remaining end of the water pipe extends into the first water spray box.

[0009] Furthermore, the dust removal unit further includes a telescopic bag; The telescopic bag is a long rubber bag and is fixed on the inside of the collecting box. An air supply pipe is fixed on the air inlet pipe, an opening and closing valve 1 is fixed on the air inlet pipe, a distribution pipe is fixed on the free end of the air supply pipe, and an opening and closing valve 2 is fixed on the air supply pipe.

[0010] Furthermore, a scraper is fixed to the side of the telescopic bag close to the cleaning strip, and the free end of the dispensing tube extends into the telescopic bag; A scraping portion is fixed on the inner side of the scraper close to the cleaning gauze. The scraping portion is a brush plate and contacts the surface of the cleaning gauze.

[0011] Furthermore, a water spray seat is fixed in the collecting box, the water spray seat is parallel to the cleaning strip, and a plurality of nozzles are evenly fixed on the water spray seat near the cleaning strip; A water inlet pipe is fixed to the outside of the aggregate box, one end of the water inlet pipe extends into the water spray seat, and the other end of the water inlet pipe is connected to a water pump. The water in the water tank is pumped into the water inlet pipe by the water pump. The water tank is fixed on the inner wall of the mine tunnel.

[0012] Furthermore, the scraper is a U-shaped plate with a hollow interior, and a plurality of through holes are evenly opened on the inner side thereof close to the cleaning gauze, and the scraping portion is a rubber plate and is close to the cleaning strip; The distribution pipe has two air outlet ends, one of which extends into the telescopic bag, and the other extends into the scraper.

[0013] Further, the following steps are included: S1. Pre-build a digital twin virtual simulation library and create a virtual scene for the fully mechanized mining face; S2. Collecting images within the fully mechanized mining working face through the monitoring device, reflecting the images to a virtual scene, and analyzing the image data within the fully mechanized mining working face in the virtual scene to implement digital twin-based monitoring; S3. At the same time, the clarity of the image data is analyzed and divided into two levels: high definition and blurry. The blurry level is when the light transmittance on the lens is below 35%; S4. If the clarity reaches a blurred level, the air bag is inflated through the air inlet pipe to expand the air bag, and the cleaning part is used to scrape off the coal powder particles on the lens surface to clean the lens surface.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: Through the cleaning component, the built-in cleaning strip is used to clean the lens surface, which is convenient for cleaning the recessed lens. The high-transparency gas bag and cleaning strip will not block the shooting picture. When the lens is wiped, no shadow part will appear in the shooting picture. The recessed lens surface can be cleaned, ensuring the quality of the monitoring shooting picture, which is convenient for timely observation of the underground operation of the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 2 Schematic diagram of the front view of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 3 This is a structural diagram of the positional relationship between the cleaning portion and the shielding piece of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 4 This is a structural diagram of the connection between the cleaning strip and the gas bag of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 5 This is a structural diagram of the positional relationship between the cleaning part and the gas bag of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 6 This is a schematic diagram of the cross-sectional three-dimensional structure of the installation box of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 7 The present invention is a monitoring device and a monitoring method based on digital twin technology. Figure 6 A schematic diagram of the partially enlarged structure at center A; Figure 8 A schematic diagram of the three-dimensional structure of the positional relationship between the lens and the camera body of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 9 This is a schematic diagram of the structure of the monitoring device and monitoring method based on digital twin technology of the present invention, in which the shielding sheet is opened after the gas bladder is inflated; Figure 10 This is a structural diagram of the positional relationship between the dust removal unit and the mounting box of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 11 Schematic diagram of the cross-sectional structure of the aggregate box of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 12 This is a schematic diagram of the state structure of the nozzle spraying and cleaning the cleaning gauze in the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 13 This is a schematic diagram of the state structure of the scraper of the monitoring device and monitoring method based on digital twin technology of the present invention to dry the cleaning gauze; Figure 14 This is a structural diagram of the connection between the water pumping pipe and the collecting box of the monitoring device and monitoring method based on digital twin technology of the present invention; Figure 15 This is a structural schematic diagram of the connection relationship between the water pumping pipe and the diversion pipe of the monitoring device and monitoring method based on digital twin technology of the present invention.

[0016] In the figure: 100, barrel; 110, lamp tube; 120, mounting bracket; 130, lens; 140, camera body; 200, cleaning assembly; 210, installation box; 211, shielding piece; 212, dust outlet; 220, air inlet pipe; 221, branch pipe; 222, air supply pipe; 2221, distribution pipe; 230, gas bag; 240, cleaning unit; 241, ventilation chamber; 242, cleaning strip; 2421, cleaning gauze; 243, air jet plate; 250, dust removal unit; 251, collection box; 252, water spray seat; 2521, nozzle; 253, bellows; 2531, scraper; 2532, scraping unit; 2533, through hole; 254, water extraction pipe; 2541, diverter pipe; 2542, water pipe; 255, water spray box 1; 2551, nozzle 1; 256, water spray box 2; 2561, nozzle 2; 260. Water tank; 261. Water inlet pipe. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0018] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0020] like Figures 1 to 9 As shown, the present application proposes a monitoring device based on digital twin technology, including a cylinder 100, a lens 130 and a camera body 140. A lamp tube 110 is fixed on the top of the cylinder 100, and the lamp tube 110 provides lighting for the camera body 140 to enhance the image capture effect. The camera body 140 is electrically connected to the digital twin platform through a circuit. The image in the fully mechanized mining working face captured in real time by the camera body 140 is digitally modeled through the digital twin platform. The digital twin platform includes digital twin technology. The video image of the fully mechanized mining working face is captured by the camera body 140, and the image is mapped in real time on the virtual scene of the digital twin platform to realize the virtualization of the fully mechanized mining working face monitoring scene. Managers can view and manage the operating status of each link of the fully mechanized mining working face in real time on the digital twin platform. A mounting bracket 120 is fixed to the bottom of the cylinder 100. The cylinder 100 is mounted on the inner wall of the mine tunnel through the mounting bracket 120. The cylinder 100 also includes a cleaning component 200. The cleaning component 200 is used to clean the surface of the lens 130 to ensure the clarity of the monitoring image and facilitate timely discovery of problems in mine operations. The cleaning assembly 200 includes a mounting box 210 and an air inlet pipe 220; The installation box 210 is a rectangular body with a hollow interior and a circular through-slot in the middle. One end of the cylinder 100 extends into the through-slot of the installation box 210. The installation box 210 and the cylinder 100 are fixedly connected. The camera body 140 is fixed in the barrel 100 near the mounting box 210. The lens 130 is a round transparent glass and is fixed in the barrel 100 near the camera body 140. The lens 130 is located in front of the camera body 140. A recessed structure is formed between the lens 130 and the mounting box 210, and the surface of the lens 130 is lower than the surface of the mounting box 210. That is, the lens 130 and the mounting box 210 are not in the same plane. There is a gap between the lens 130 and the mounting box 210, and the lens 130 is recessed in the mounting box 210. A shielding sheet 211 is fixed to the mounting box 210 near the lens 130. The shielding sheet 211 is a ring-shaped transparent silicone sheet composed of multiple curved sheets. There are gaps between the multiple curved sheets, and the gaps are between 0.1mm and 0.15mm. In other words, coal dust is not easy to enter the gaps in the shielding sheet 211. The free end of the shielding sheet 211 contacts the surface of the lens 130. The shielding sheet 211 is used to prevent external dust from falling into the mounting box 210. The shielding sheet 211 has a soft structure and a split design, which does not affect the expansion and contraction of the gas capsule 230. A gas capsule 230 is fixed to the top of the mounting box 210. The gas capsule 230 is a long, light-transmitting silicone capsule. The gas capsule 230 is made of silicone rubber with good light transmission effect and a light transmittance of more than 90%. Therefore, the gas capsule 230 will not block the shooting image of the camera body 140. One end of the air inlet pipe 220 extends into the gas capsule 230. The connection between the air inlet pipe 220 and the gas capsule 230 is airtight and fixed. The other end of the air inlet pipe 220 is connected to the air pump, which is fixed to the cylinder 100. The air inlet pipe 220 is used to supply air into the gas capsule 230, so that the gas capsule 230 expands along the surface of the lens 130. A cleaning portion 240 is fixed on the gas capsule 230 near the shielding piece 211. The cleaning portion 240 includes a cleaning strip 242. The cleaning strip 242 is a triangular translucent silicone plate, and its tip can contact the surface of the lens 130. The horizontal length of the cleaning strip 242 is not less than the diameter of the lens 130. The cleaning strip 242 can completely cover the surface of the lens 130 to achieve comprehensive cleaning. The shielding piece 211 after opening does not affect the movement of the gas capsule 230, and the shielding piece 211 can be completely reset after the gas capsule 230 is reset.

[0021] It is worth noting that the cleaning component 200 is set in the installation box 210, and the built-in cleaning strip 242 is used to clean the surface of the lens 130. When the highly transparent gas capsule 230 and the cleaning strip 242 are located in front of the lens 130, they will not block the shooting picture. When the lens 130 is wiped, no shadow part will appear in the shooting picture, which can ensure the integrity of the shooting picture.

[0022] Specifically, if Figures 5 to 9 As shown, the cleaning portion 240 further includes a ventilation chamber 241; The ventilation chamber 241 is a transparent plastic box with a hollow interior and is fixed to the bottom of the gas bag 230. A branch pipe 221 is fixed to the air inlet pipe 220. The branch pipe 221 is connected to the interior of the air inlet pipe 220. The branch pipe 221 is a telescopic tube and its free end extends into the ventilation chamber 241. The branch pipe 221 can be extended and retracted as the ventilation chamber 241 moves without affecting the air intake in the ventilation chamber 241. The bottom of the ventilation chamber 241 is fixed with an air jet plate 243, which is a high-transmittance plastic plate with a hollow interior and an air outlet on one side of the long side, and is in communication with the interior of the ventilation chamber 241; The air outlet of the air jet plate 243 is inclined toward the lens 130 , and the horizontal length of the air jet plate 243 is not less than the diameter of the lens 130 . The air jet plate 243 can spray gas to fully clean the lens 130 . The cleaning strip 242 is fixed on the ventilation chamber 241 near the side of the lens 130. The ventilation chamber 241 is located in front of the cleaning strip 242. The jet plate 243 is located below the cleaning strip 242. The jet plate 243 is first used to perform a preliminary cleaning of the coal powder on the surface of the lens 130, and then the cleaning strip 242 is used to scrape off the dust particles on the surface of the lens 130.

[0023] It should be noted that the ventilation chamber 241 and the air jet plate 243 are preferably made of PMMA plastic material, which has high transparency. When the ventilation chamber 241 and the air jet plate 243 appear in front of the lens 130, they will not block the shooting picture.

[0024] Specifically, if Figure 6 and Figure 7 As shown, the cleaning strip 242 is a rectangular strip and a cleaning gauze 2421 is fixed on one side thereof close to the lens 130; The cleaning gauze 2421 is a transparent gauze and contacts the surface of the lens 130. The cleaning gauze 2421 is preferably made of organza fabric, which does not affect the integrity of the picture taken by the camera body 140. At the same time, the cleaning gauze 2421 is soft and can reduce the generation of scratches when wiping the lens 130.

[0025] It is easy to understand that the cleaning gauze 2421 can increase the contact force with the surface of the lens 130, better scrape off the dust particles on the surface of the lens 130, and maintain the cleanliness of the surface of the lens 130.

[0026] In the above embodiment, when cleaning the surface of the lens 130, the gas bag 230 is inflated through the air inlet pipe 220, so that the gas bag 230 expands along the surface of the lens 130. At the same time, air is taken into the branch pipe 221, causing the jet plate 243 to eject air. As the gas bag 230 expands, the ventilation chamber 241 and the cleaning strip 242 move downward. The jet plate 243 first contacts the uncleaned area of the lens 130 surface, and uses the air flow to blow off the coal powder particles on the surface of the lens 130. Then, the cleaning gauze 2421 is used to scrape the surface of the lens 130 from top to bottom to scrape off the coal powder particles on the surface of the lens 130. The gas bag 230 continues to expand and adhere to the surface of the lens 130. The highly transparent gas bag 230 and the cleaning strip 242 do not block the shooting image when they are located in front of the lens 130, making it convenient to clean the concave lens 130 and can clean the concave lens 130 surface while ensuring the integrity of the shot image and improving the quality of the monitoring image.

[0027] In some embodiments of the present application, Figures 10 to 15 As shown, the cleaning assembly 200 further includes a dust removal portion 250; The dust removal unit 250 includes a collection box 251; The aggregate box 251 is a rectangular body with a hollow interior and an opening near the top of the installation box 210. A dust outlet 212 is provided at the bottom of the installation box 210 near the aggregate box 251. The dust outlet 212 and the opening of the aggregate box 251 overlap, that is, the scraped coal powder particles can enter the aggregate box 251 through the dust outlet 212. The aggregate box 251 is filled with clean water, which is used to absorb coal powder particles and reduce the flying of coal powder particles.

[0028] It is easy to understand that the coal powder particles scraped off the surface of the lens 130 are collected by the collection box 251, which reduces the flying of powder and improves the quality of the environment around the monitoring equipment.

[0029] Specifically, if Figure 14 and Figure 15 As shown, a water spray box 255 is fixed on the top of the installation box 210, and multiple nozzles 2551 are evenly fixed on the water spray box 255. The water sprayed by the nozzles 2551 is used to absorb dust particles in front of the lens 130. Water spray boxes 256 are fixed on both sides of the installation box 210. Multiple nozzles 2561 are evenly fixed on the water spray box 256. The water sprayed by the nozzles 2561 is used to absorb dust particles around the installation box 210, without affecting the shooting picture, while removing dust around the monitoring equipment; A water pump 254 is fixed to one side of the collecting box 251. Two diversion pipes 2541 and a water pipe 2542 are fixed to the water outlet of the water pump 254. The water in the collecting box 251 is sent into the water pump 254 by a water pump. The water pump is fixed to the side of the collecting box 251. The free end of the diverter pipe 2541 extends into a second water spray box 256, and the connection between the diverter pipe 2541 and the second water spray box 256 is sealed and fixed. The free end of the water pipe 2542 extends into the first water spray box 255, and the connection between the water pipe 2542 and the first water spray box 255 is sealed and fixed.

[0030] It is worth noting that by recycling the cleaned pulverized coal particles, not only can the flying dust be reduced, but also the dust removal effect around the monitoring equipment can be improved.

[0031] On the basis of the above embodiment, the cleaning strip 242 continuously moves downward into the aggregate box 251, so that the scraped coal powder particles fall into the aggregate box 251, and the coal powder particles are adsorbed by the clean water inside the aggregate box 251, and the water containing coal powder particles in the aggregate box 251 is pumped into the suction pipe 254 through the water pump, and the water containing coal powder particles is respectively sent into the diversion pipe 2541 and the water pipe 254 through the suction pipe 254, so that the nozzle 1 2551 and the nozzle 2 2561 spray out water containing coal powder particles. The water containing coal powder particles can increase the contact force with the dust particles around the monitoring equipment, better adsorb the dust particles, and make the adsorbed dust particles settle quickly, which can reduce the dust particles floating around the monitoring equipment, and can achieve the cleaning of the surface of the lens 130 while using the cleaned coal powder to remove dust around the monitoring equipment, thereby improving the cleaning efficiency and ensuring the safety of the operation.

[0032] In some embodiments of the present application, Figures 11 to 13 As shown, the dust removal unit 250 further includes a telescopic bag 253; The telescopic bag 253 is a long rubber bag and is fixed on the inner side of the collecting box 251. An air supply pipe 222 is fixed on the air intake pipe 220. An opening and closing valve 1 is fixed on the air intake pipe 220. The opening and closing valve 1 is used to control the air intake amount in the gas soft bag 230 and the ventilation chamber 241. A distribution pipe 2221 is fixed on the free end of the air supply pipe 222. An opening and closing valve 2 is fixed on the air supply pipe 222. The opening and closing valve 2 is used to control the air intake amount in the air supply pipe 222.

[0033] It should be noted that, in the initial state, the opening and closing valve 1 is in the open state, and the opening and closing valve 2 is in the closed state. At this time, the gas enters the gas soft bag 230 and the ventilation chamber 241 respectively through the air inlet pipe 220 and the branch pipe 221. When the cleaning gauze 2421 is located inside the collection box 251 and reaches the specified position, the opening and closing valve 1 is closed and the opening and closing valve 2 is opened. At this time, air is introduced into the air supply pipe 222 through the air inlet pipe 220, so that the telescopic bag 253 is inflated and expanded.

[0034] Specifically, if Figure 12 and Figure 13 As shown, a scraper 2531 is fixed to one side of the telescopic bag 253 near the cleaning strip 242. The free end of the dispensing tube 2221 extends into the telescopic bag 253. The connection between the dispensing tube 2221 and the telescopic bag 253 is airtightly fixed. When the telescopic bag 253 expands, it drives the scraper 2531 to move at the cleaning gauze 2421. A scraping portion 2532 is fixed on the inner side of the scraper 2531 close to the cleaning gauze 2421 . The scraping portion 2532 is a brush plate and contacts the surface of the cleaning gauze 2421 . The scraping portion 2532 is used to clean the coal powder on the cleaning gauze 2421 .

[0035] It is easy to understand that after the air in the telescopic bag 253 expands, it can drive the scraper 2531 to move along the cleaning strip 242, and use the scraping part 2532 to clean the cleaning gauze 2421, avoiding the scraped coal powder from causing secondary contamination to the lens 130.

[0036] Specifically, if Figures 11 to 13 As shown, a water spray seat 252 is fixed in the collecting box 251. The water spray seat 252 is parallel to the cleaning strip 242. The length of the water spray seat 252 is not less than the length of the cleaning strip 242. That is, the water spray seat 252 can cover the area of the cleaning strip 242. A plurality of nozzles 2521 are evenly fixed on the water spray seat 252 near the cleaning strip 242. The nozzles 2521 are used to spray the cleaning gauze 2421. A water inlet pipe 261 is fixed to the outside of the collecting box 251, one end of the water inlet pipe 261 extends into the water spray seat 252, and the other end of the water inlet pipe 261 is connected to a water pump. The water in the water tank 260 is pumped into the water inlet pipe 261 by the water pump. The water tank 260 is filled with clean water. The water tank 260 is fixed on the inner wall of the mine tunnel and has a water inlet. The staff adds water to the water tank 260 regularly.

[0037] It is easy to understand that the coal powder on the cleaning gauze 2421 can be washed away by the nozzle 2521, and the coal powder on the cleaning gauze 2421 can be better cleaned. The coal powder on the cleaning gauze 2421 flows into the aggregate box 251 along with the clean water, and the flushing water is recycled for spraying and dust removal.

[0038] Specifically, if Figures 11 to 13 As shown, the scraper 2531 is a U-shaped plate with a hollow interior, and a plurality of through holes 2533 are evenly opened on the inner side thereof near the cleaning gauze 2421. The scraping portion 2532 is a rubber plate and is close to the cleaning strip 242. This means that after the expansion bag 253 is expanded, the scraping portion 2532 first contacts the cleaning gauze 2421, and the water stains on the surface of the cleaning gauze 2421 are first scraped off by the scraping portion 2532. The cleaning gauze 2421 is detachably connected to the cleaning strip 242. When it is worn out after long-term use, the cleaning gauze 2421 can be replaced and continued to be used, which is low in cost. The distribution pipe 2221 has two air outlet ends, one of which extends into the telescopic bag 253 , and the other extends into the scraper 2531 .

[0039] It is worth noting that when air is supplied to the distribution pipe 2221 through the air supply pipe 222, the telescopic bag 253 expands and air is taken into the scraper 2531, and a dry air flow is sprayed through the through hole 2533 to dry the moisture on the cleaning gauze 2421 so that it can be reused.

[0040] On the basis of the above embodiment, when the cleaning strip 242 is located in the collecting box 251, water in the water tank 260 is first pumped into the water spray seat 252 through the water inlet pipe 261, and water is sprayed through the nozzle 2521 to clean the cleaning gauze 2421, thereby washing away the coal powder particles on the cleaning gauze 2421, and the washed coal powder particles are collected in the collecting box 251; Then stop flushing, open the second opening and closing valve, and let air into the air supply pipe 222 through the air inlet pipe 220, so that the distribution pipe 2221 is ventilated, and the telescopic bag 253 is inflated and expanded. The telescopic bag 253 is used to drive the scraper 2531 to move along the direction of the cleaning strip 242, and the water stains on the surface of the cleaning gauze 2421 are scraped off by the scraping part 2532. At the same time, the air flows inside the scraper 2531, and the dry air flow is sprayed through the through hole 2533 to dry the water on the cleaning gauze 2421. 421 keeps the surface clean, then opens the opening and closing valve 1, and evacuates the air from the air supply pipe 222 and the branch pipe 221 through the air inlet pipe 220 to reset the telescopic bag 253 and the gas soft bag 230, completing the cleaning action and achieving surface cleaning of the lens 130, thereby reducing the cleaning difficulty and making rational use of the flushed coal powder particles to reduce the subsequent workload. It can clean the lens 130 while completing the cleaning of the cleaning gauze 2421, saving the time of repeated disassembly and cleaning and improving the cleaning efficiency.

[0041] In some embodiments of the present application, the following steps are included: S1. Pre-build a digital twin virtual simulation library and create a virtual scene for the fully mechanized mining face; S2. Collecting images within the fully mechanized mining working face through the monitoring device, reflecting the images to a virtual scene, and analyzing the image data within the fully mechanized mining working face in the virtual scene to implement digital twin-based monitoring; S3. At the same time, the clarity of the image data is analyzed and divided into two levels: high definition and blurry. If the transmittance of the lens 130 is below 35%, it is considered blurry; otherwise, it is considered high definition. S4. If the clarity reaches a blurred level, the air bag 230 is inflated through the air inlet pipe 220 to expand the air bag 230, and the cleaning part 240 is used to scrape off the coal powder particles on the surface of the lens 130 to clean the surface of the lens 130.

[0042] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A monitoring device based on digital twin technology, comprising a barrel (100), a lens (130) and a camera body (140), wherein the camera body (140) is electrically connected to a digital twin platform via a circuit, and is characterized in that: Also included is a cleaning assembly (200); The cleaning assembly (200) comprises a mounting box (210) and an air inlet pipe (220); The installation box (210) is a rectangular body with a hollow interior and a circular through-slot in the middle, and one end of the cylinder (100) extends into the through-slot of the installation box (210); The camera body (140) is fixed in the barrel (100) near the mounting box (210), the lens (130) is located in front of the camera body (140), and the surface of the lens (130) is lower than the surface of the mounting box (210); A shielding piece (211) is fixed on the mounting box (210) near the lens (130), the shielding piece (211) being an annular transparent silicone piece composed of a plurality of arc-shaped pieces, and the free end of the shielding piece (211) is in contact with the surface of the lens (130); A gas capsule (230) is fixed on the top of the installation box (210). The gas capsule (230) is a long, light-transmitting silicon capsule. One end of the air inlet pipe (220) extends into the gas capsule (230). A cleaning portion (240) is fixed on the gas capsule (230) near the shielding piece (211). The cleaning portion (240) includes a cleaning strip (242). The cleaning strip (242) is a triangular light-transmitting silicone plate, and its tip is capable of contacting the surface of the lens (130).

2. The monitoring device based on digital twin technology according to claim 1, characterized in that: The cleaning portion (240) further includes a ventilation chamber (241); The ventilation chamber (241) is a transparent plastic box with a hollow interior and is fixed to the bottom of the gas soft bag (230). A branch pipe (221) is fixed to the air inlet pipe (220). The branch pipe (221) is a telescopic pipe and its free end extends into the ventilation chamber (241). An air jet plate (243) is fixed to the bottom of the ventilation chamber (241). The air jet plate (243) is a highly light-transmitting plastic plate that is hollow inside and has an air outlet on one side of its long side, and is in communication with the interior of the ventilation chamber (241). The air outlet of the air jet plate (243) is inclined toward the lens (130), and the transverse length of the air jet plate (243) is not less than the diameter of the lens (130); The cleaning bar (242) is fixed on the ventilation chamber (241) on a side close to the lens (130), and the air injection plate (243) is located below the cleaning bar (242).

3. The monitoring device based on digital twin technology according to claim 1, characterized in that: The cleaning strip (242) is a rectangular strip and a cleaning gauze (2421) is fixed on one side of the cleaning strip close to the lens (130); The cleaning gauze (2421) is a transparent gauze and is in contact with the surface of the lens (130).

4. The monitoring device based on digital twin technology according to claim 1, characterized in that: The cleaning assembly (200) further includes a dust removal unit (250); The dust removal part (250) includes a material collection box (251); The material collecting box (251) is a rectangular body with a hollow interior and an opening at the top near the installation box (210). A dust collecting opening (212) is provided at the bottom of the installation box (210) near the material collecting box (251). The dust collecting opening (212) and the opening of the material collecting box (251) overlap. The aggregate box (251) is filled with clean water, and the clean water is used to absorb coal powder particles.

5. The monitoring device based on digital twin technology according to claim 4, characterized in that: A water spray box (255) is fixed on the top of the installation box (210), and a plurality of first spray heads (2551) are evenly fixed on the water spray box (255). Water spray boxes (256) are fixed on both sides of the installation box (210), and a plurality of second spray heads (2561) are evenly fixed on the water spray box (256). A water pumping pipe (254) is fixed to one side of the collecting box (251), and two diversion pipes (2541) and a water pipe (2542) are fixed to the water outlet end of the water pumping pipe (254); The free end of one of the diversion pipes (2541) extends into a second water spray box (256), and the free end of the water pipe (2542) extends into a first water spray box (255).

6. The monitoring device based on digital twin technology according to claim 4, characterized in that: The dust removal portion (250) further includes a telescopic bag (253); The telescopic bag (253) is a long rubber bag and is fixed to the inside of the collecting box (251). The air supply pipe (222) is fixed to the air intake pipe (220), the first opening and closing valve is fixed to the air intake pipe (220), the distribution pipe (2221) is fixed to the free end of the air supply pipe (222), and the second opening and closing valve is fixed to the air supply pipe (222).

7. The monitoring device based on digital twin technology according to claim 6, characterized in that: A scraper (2531) is fixed on one side of the telescopic bag (253) close to the cleaning strip (242), and the free end of the distribution tube (2221) extends into the telescopic bag (253); A scraping portion (2532) is fixed on the inner side of the scraper (2531) close to the cleaning gauze (2421); the scraping portion (2532) is a brush plate and is in contact with the surface of the cleaning gauze (2421).

8. The monitoring device based on digital twin technology according to claim 4, characterized in that: A water spray seat (252) is fixed in the collecting box (251), the water spray seat (252) is parallel to the cleaning strip (242), and a plurality of nozzles (2521) are evenly fixed on the water spray seat (252) near the cleaning strip (242); A water inlet pipe (261) is fixed to the outside of the collecting box (251), one end of the water inlet pipe (261) extends into the water spray seat (252), and the other end of the water inlet pipe (261) is connected to a water pump, and the water in the water tank (260) is pumped into the water inlet pipe (261) by the water pump. The water tank (260) is fixed to the inner wall of the mine tunnel.

9. The monitoring device based on digital twin technology according to claim 7, characterized in that: The scraper (2531) is a U-shaped plate with a hollow interior, and a plurality of through holes (2533) are evenly opened on the inner side thereof close to the cleaning gauze (2421); the scraping portion (2532) is a rubber plate and is close to the cleaning strip (242); The distribution pipe (2221) has two air outlet ends, one of the air outlet ends of the distribution pipe (2221) extends into the telescopic bag (253), and the other air outlet end of the distribution pipe (2221) extends into the scraper (2531).

10. A monitoring method for a monitoring device based on digital twin technology, characterized in that: The following steps are involved: S1. Pre-build a digital twin virtual simulation library and create a virtual scene for the fully mechanized mining face; S2. Collecting images within the fully mechanized mining working face through the monitoring device, reflecting the images to a virtual scene, and analyzing the image data within the fully mechanized mining working face in the virtual scene to implement digital twin-based monitoring; S3, at the same time, analyzing the clarity of the image data, and dividing the clarity into two levels: high definition and blurry, and the light transmittance on the lens (130) below 35% is the blurry level; S4. If the clarity reaches a blurred level, the air bag (230) is inflated through the air inlet pipe (220) to expand the air bag (230), and the cleaning part (240) is used to scrape away the coal powder particles on the surface of the lens (130), thereby cleaning the surface of the lens (130).

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