Dustproof camera of coal mine underground video monitoring system

Abstract

The invention discloses a dustproof camera of an underground coal mine video monitoring system. According to the method, the answer prediction is realized by utilizing fine-grained associated information and utilizing a classification or regression technology according to the question type, so that the accuracy of video question answering is remarkably improved.

Description

Technical Field

[0001] The present invention relates to a dust-proof camera for a video monitoring system in a coal mine, belonging to the technical field of cameras. Background Art

[0002] In a coal mine, a video monitoring system is used to monitor coal mining equipment. However, the camera of the video monitoring system is obscured by coal ash and the like, resulting in unclear captured images and affecting the effect of video monitoring.

[0003] The existing method is to manually wipe the camera regularly, which wastes labor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dust-proof camera for a video monitoring system in a coal mine to solve the technical problems existing in the above-mentioned prior art.

[0005] The technical solution adopted by the present invention is as follows: A dust-proof camera for a video monitoring system in a coal mine includes a camera body and a wiping mechanism. The wiping mechanism includes a sponge, and the sponge moves up and down under the drive of a driving mechanism.

[0006] Preferably, the driving mechanism is a cylinder. The lower end of the telescopic arm of the cylinder is coaxially fixed with a sleeve. Internal threads are provided inside the sleeve, and a threaded rod is connected inside the sleeve. The internal and external threads are not self-locking. The sponge is fixedly connected to the lower end of the threaded rod. A rotating cylinder is arranged directly below the sponge, and through holes are provided on the side wall of the rotating cylinder.

[0007] Preferably, an electromagnet is fixed to the inner side of the lower port of the sleeve, and the threaded rod is made of a ferromagnetic material.

[0008] Preferably, the sponge is cylindrical. Two limiting plates arranged vertically are respectively fixed on both sides above the rotating cylinder. Touch switches are fixed on the limiting plates. When the sponge moves up and down, it can touch the touch switches, and the touch switches are electrically connected to the electromagnet through a controller.

[0009] Preferably, a cylinder body with an axis arranged vertically is fixed on the frame. A piston is slidably and sealingly connected inside the cylinder body. A piston rod is fixed to the upper end of the piston. The piston rod is fixed to the telescopic arm of the cylinder through a connecting rod. A one-way intake valve and a one-way exhaust valve are arranged at the bottom of the cylinder body. The one-way exhaust valve is connected to an air storage tank. A first automatic valve is arranged at the outlet end of the air storage tank. The outlet end of the first automatic valve is connected to a Venturi tube. The throat of the Venturi tube is connected to a water tank through a first suction pipe, and the throat of the Venturi tube is connected to a cleaning agent tank through a second suction pipe. A second automatic valve and a third automatic valve are respectively arranged on the first suction pipe and the second suction pipe. The outlet end of the Venturi tube is connected to a nozzle through a hose. The nozzle is fixed on the telescopic arm of the cylinder, and during the telescopic process of the telescopic arm of the cylinder, the nozzle can be directly opposite to the camera.

[0010] Preferably, the rotating cylinder is rotatably connected inside the fixed cylinder.

[0011] The beneficial effects of the present invention: Compared with the prior art, the present invention can realize the automatic scrubbing of the camera body, can automatically spray the cleaning agent and wash the cleaning agent clean, thereby achieving the effect of dust prevention for the camera, and can realize the automatic wringing of the sponge, realize the reuse of the sponge, and save labor. Description of the Drawings

[0012] Figure 1 is the overall structure diagram of the present invention. Detailed Embodiments

[0013] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0014] The reference numerals in the drawings of the specification include: camera body 10, cylinder 20, telescopic arm 21 of the cylinder, sleeve 22, electromagnet 23, threaded rod 24, mounting block 25, sponge 26, touch switch 27, limiting plate 28, fixed cylinder 29, rotating cylinder 291, cylinder body 30, piston 31, one-way intake valve 32, one-way exhaust valve 33, air storage tank 40, first automatic valve 41, Venturi tube 50, second automatic valve 51, water tank 52, third automatic valve 53, cleaning agent tank 54, nozzle 55.

[0015] Embodiment 1: A dust-proof camera for a coal mine underground video monitoring system, as Figure 1As shown in the figure, it includes a camera body and a wiping mechanism. The wiping mechanism includes a cylinder fixed on the frame. The telescopic arm of the cylinder is arranged vertically downward. A sleeve is coaxially fixed at the lower end of the telescopic arm of the cylinder. An internal thread is provided inside the sleeve. A threaded rod is connected inside the sleeve. An external thread matching the internal thread is provided on the threaded rod. The internal and external threads are not self-locking. When the sleeve is fixed and pressed downward, the threaded rod rotates forward. When the fixed sleeve is pulled upward, the threaded rod rotates in reverse. The principle is similar to that of a rotary mop. An installation block is fixed at the lower end of the threaded rod, and a sponge is fixed at the lower end of the installation block. The sponge is cylindrical. A fixed cylinder is fixed directly below the sponge. A rotating cylinder is rotatably connected inside the fixed cylinder, and through holes are provided on the side wall of the rotating cylinder.

[0016] As Figure 1 shown in the figure, an electromagnet is fixed inside the inner side of the lower port of the sleeve. The threaded rod is made of ferromagnetic material. When the electromagnet is energized, the threaded rod can be adsorbed, so as to realize the limit of the threaded rod. When the electromagnet is powered off, the threaded rod can move relative to the sleeve.

[0017] As Figure 1 shown in the figure, a limiting plate arranged vertically is fixed on each of the left and right sides above the rotating cylinder at the mouth of the fixed cylinder. The function of the limiting plate is to guide the sponge into the rotating cylinder. A touch switch is fixed on the limiting plate. When the sponge moves up and down, the installation block can touch the touch switch. The touch switch is electrically connected to the electromagnet through a controller.

[0018] During the downward movement of the sponge, the installation block touches the touch switch, the electromagnet is powered off, and the threaded rod and the sponge can rotate. During the upward movement of the sponge, the installation block can touch the touch switch again, the electromagnet is energized, and the threaded rod and the sponge are limited. As Figure 1 shown in the figure, a cylinder with an axis arranged vertically is fixed on the frame. A piston is slidably and sealingly connected inside the cylinder. A piston rod is fixed at the upper end of the piston. The piston rod is fixed to the telescopic arm of the cylinder through a connecting rod. A one-way intake valve and a one-way exhaust valve are provided at the bottom of the cylinder. The one-way exhaust valve is connected to an air storage tank. A first automatic valve is provided at the outlet end of the air storage tank. The outlet end of the first automatic valve is connected to a Venturi tube. The throat of the Venturi tube is connected to a water tank through a first suction pipe. The throat of the Venturi tube is connected to a cleaning agent tank through a second suction pipe. A second automatic valve and a third automatic valve are respectively provided on the first suction pipe and the second suction pipe. The outlet end of the Venturi tube is connected to a nozzle through a hose. The nozzle is fixed on the telescopic arm of the cylinder, and during the telescopic process of the telescopic arm of the cylinder, the nozzle can be directly opposite to the camera.

[0019] The telescopic arm of the air cylinder extends and retracts, driving the piston rod and the piston to move up and down reciprocally. When the piston moves downward, positive pressure is generated inside the cylinder block, the one-way intake valve closes, and the one-way exhaust valve opens, exhausting the air from the cylinder block. When the piston moves upward, negative pressure is generated inside the cylinder block, the one-way intake valve opens, and the one-way exhaust valve closes; the reciprocating movement of the piston up and down forms a pump inside the cylinder block, and the gas discharged from the pump is stored inside the air storage tank to form compressed air. Open the first automatic valve, and the compressed air enters the Venturi tube. Negative pressure is generated at the throat of the Venturi tube, and the throat of the Venturi tube can suck in water or cleaning agent and spray it onto the camera body through the nozzle to enhance the cleaning effect of the camera.

[0020] The air cylinder, the first automatic valve, the second automatic valve, and the third automatic valve in this embodiment are all electrically connected to the controller.

[0021] The specific implementation process is as follows: In the first step, when the electromagnet is energized, the threaded rod cannot rotate relative to the sleeve. The telescopic arm of the air cylinder extends to drive the sleeve, the threaded rod, the mounting block, and the sponge as a whole into the rotating cylinder. When the mounting block touches the touch switch, the electromagnet is de-energized, and the telescopic arm of the air cylinder continues to extend. The sleeve moves downward relative to the threaded rod, and the internal and external thread cooperation drives the threaded rod to drive the sponge to rotate and dehydrate. In the second step, the telescopic arm of the air cylinder contracts, driving the fixed cylinder to reset. The threaded rod and the sponge rotate downward under their own gravity. There is a limiting mechanism on the threaded rod to prevent the threaded rod from completely sliding out of the sleeve. The structure of the limiting mechanism is existing; when the mounting block touches the touch switch again, the electromagnet is energized to limit the threaded rod. In the third step, then use the telescopic arm of the air cylinder to extend and retract multiple times to drive the sleeve, the threaded rod, the mounting block, and the sponge as a whole to move up and down reciprocally to wipe the camera body; during this process, the sponge is always above the rotating cylinder, the electromagnet is always energized, and the threaded rod is limited inside the sleeve. In the fourth step, during the reciprocating movement of the telescopic arm of the air cylinder, a pump is formed inside the cylinder block and stored in the air storage tank to form compressed air.

[0022] In the fifth step, when the camera cannot be wiped clean with a dry sponge, open the first automatic valve and the second automatic valve. The compressed air enters the Venturi tube. Negative pressure is generated at the throat of the Venturi tube. The throat of the Venturi tube sucks in the liquid cleaning agent and sprays it out through the nozzle. At the same time, use the air cylinder to drive the nozzle to move up and down to align with the camera to complete the automatic spraying of the cleaning agent onto the camera. After spraying, close the first automatic valve and the second automatic valve. Repeat step three to scrub the camera with the sponge and the cleaning agent.

[0023] Step 6: Open the first automatic valve and the third automatic valve. Compressed air enters the Venturi tube, creating a negative pressure in the throat of the Venturi tube. Water is sucked into the throat of the Venturi tube and sprayed out through the nozzle. At the same time, use the cylinder to drive the nozzle to move up and down until it aligns with the camera, completing the automatic sprinkling of water on the camera to clean the cleaning agent. The cleaning agent in this embodiment is alcohol. Repeat Steps 1 to 3 to dry the water on the camera and wring out the sponge.

[0024] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A dust-proof camera for a video monitoring system in a coal mine, characterized in that: It includes a camera body and a wiping mechanism. The wiping mechanism includes a sponge, and the sponge moves up and down under the drive of a drive mechanism.

2. The dust-proof camera of a coal mine underground video monitoring system according to claim 1, characterized in that: The drive mechanism is a cylinder. A sleeve is coaxially fixed to the lower end of the telescopic arm of the cylinder. Internal threads are provided inside the sleeve. A threaded rod is connected inside the sleeve, and the internal and external threads are non-self-locking. The sponge is fixedly connected to the lower end of the threaded rod; a rotating cylinder is arranged directly below the sponge, and through holes are provided on the side wall of the rotating cylinder.

3. The dust-proof camera of a coal mine underground video monitoring system according to claim 2, characterized in that: An electromagnet is fixed to the inner side of the lower port of the sleeve, and the threaded rod is made of ferromagnetic material.

4. The dust-proof camera of a coal mine underground video monitoring system according to claim 3, characterized in that: The sponge is cylindrical. A limiting plate arranged vertically is respectively fixed to both sides above the rotating cylinder. A touch switch is fixed to the limiting plate. When the sponge moves up and down, it can touch the touch switch. The touch switch is electrically connected to the electromagnet through a controller.

5. The dust-proof camera of a coal mine underground video monitoring system according to claim 2, characterized in that: A cylinder body with an axis arranged vertically is fixed to the frame. A piston is slidably and sealingly connected inside the cylinder body. A piston rod is fixed to the upper end of the piston. The piston rod is fixed to the telescopic arm of the cylinder through a connecting rod; a one-way intake valve and a one-way exhaust valve are provided at the bottom of the cylinder body. The one-way exhaust valve is connected to an air storage tank. A first automatic valve is provided at the outlet end of the air storage tank. The outlet end of the first automatic valve is connected to a Venturi tube. The throat of the Venturi tube is connected to a water tank through a first suction pipe, and the throat of the Venturi tube is connected to a cleaning agent tank through a second suction pipe. A second automatic valve and a third automatic valve are respectively provided on the first suction pipe and the second suction pipe; the outlet end of the Venturi tube is connected to a nozzle through a hose. The nozzle is fixed to the telescopic arm of the cylinder, and during the telescopic process of the telescopic arm of the cylinder, the nozzle can be directly aimed at the camera.

6. The dust-proof camera of a coal mine underground video monitoring system according to claim 2, characterized in that: The rotating cylinder is rotatably connected inside the fixed cylinder.

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