A video surveillance device

Abstract

This application relates to the technical field of monitoring devices, and particularly to a video monitoring device, which includes a monitoring mechanism, a lifting mechanism, and a cleaning mechanism; the monitoring mechanism includes a camera located inside the chimney, a display screen located outside the chimney, a processor, and a power supply. The camera and the display screen are both coupled to the processor. The processor is used to receive the video signal captured by the camera and transmit it to the display screen. The power supply is used to supply power to the camera, the display screen, and the processor; the lifting mechanism is used to drive the camera to lift and lower; the cleaning mechanism includes an air jet cylinder located inside the chimney, an inflation assembly, and an adjustment assembly. A first air cavity is provided between the inner wall and the outer wall of the air jet cylinder. The camera is located inside the air jet cylinder. A plurality of air jet holes communicating with the first air cavity and facing the camera's imaging area are provided on the inner wall of the air jet cylinder; the inflation assembly is used for the camera to be installed and for inflating the first air cavity. This application can ensure the normal use of the camera.

Description

Technical Field

[0001] This application relates to the technical field of monitoring devices, and particularly to a video monitoring device. Background Art

[0002] The chimney anti-corrosion project is a high-altitude special operation project with high risks and large danger coefficients. In order to strengthen the safety management of the construction site, managers require the installation of video monitoring at the construction site to play a role in supervision and guidance while recording the construction process in real time. During the stage of demolishing the inner cylinder of the chimney, there is a large amount of dust inside the chimney and the visibility is low. In order to ensure the clarity of the monitoring images during the construction process, the position of the camera needs to be adjusted frequently. The manual adjustment method is neither safe nor too cumbersome, and it affects a certain construction period due to the adjustment of the position.

[0003] Through retrieval, the Chinese patent publication number CN207802175U discloses a video monitoring device for chimney anti-corrosion project construction, including a video signal transmission terminal located inside the chimney; a power device located outside the chimney and driving the video signal transmission terminal to move up and down inside the chimney; a data storage and display unit receiving the signal of the video signal transmission terminal. Using this device to install video monitoring, after successful installation and debugging, it can meet the monitoring area requirements during the entire project construction process. Managers can adjust the height according to the construction area without re-laying monitoring points manually, further improving the automation degree of the chimney anti-corrosion project video monitoring system.

[0004] Regarding the above related technologies, the inventor believes that there are the following defects: during the use of the camera, since there is a large amount of dust in the chimney, the dust in the chimney is likely to adhere to the imaging area of the camera, resulting in the camera being unable to clearly and accurately capture the area to be monitored, affecting the normal use of the camera, so improvement is needed. Summary of the Invention

[0005] In order to ensure the normal use of the camera, this application provides a video monitoring device.

[0006] A video monitoring device provided by this application adopts the following technical solution: a video monitoring device includes a monitoring mechanism, a lifting mechanism, and a cleaning mechanism;

[0007] The monitoring mechanism includes a camera located inside the chimney, a display screen, a processor, and a power supply located outside the chimney. The camera and the display screen are both coupled to the processor. The processor is used to receive the video signal captured by the camera and transmit it to the display screen. The power supply is used to supply power to the camera, the display screen, and the processor;

[0008] The lifting mechanism is used to drive the camera to lift and lower;

[0009] The cleaning mechanism includes an air jet cylinder, an inflation assembly, and an adjustment assembly located inside the chimney. A first air chamber is provided between the inner wall and the outer wall of the air jet cylinder. The camera is located inside the air jet cylinder, and a plurality of air jet holes communicating with the first air chamber and facing the camera's imaging area are provided on the inner wall of the air jet cylinder; the inflation assembly is used for installing the camera and inflating the first air chamber; the adjustment assembly is installed on the inflation assembly and is used to drive the air jet cylinder to rise and fall.

[0010] Optionally, the lifting mechanism includes a winch located outside the chimney and a plurality of fixed pulleys. A pulling rope is wound around the winch, and the pulling rope successively bypasses each fixed pulley and is connected to the camera. The fixed pulley is rotatably connected to the chimney.

[0011] Optionally, the end of the pulling rope away from the winch is connected to the top of the camera through a plurality of connecting ropes.

[0012] Optionally, the inflation assembly includes an air pump located outside the chimney and an annular counterweight located inside the chimney. The camera is fixedly embedded in the annular counterweight, and the air pump inflates the first air chamber through the annular counterweight.

[0013] Optionally, the annular counterweight is a counterweight cylinder. A second air chamber is provided between the inner wall and the outer wall of the counterweight cylinder. The air pump is connected to the second air chamber through an air pipe; the air jet cylinder is slidably embedded in the second air chamber in the vertical direction, and an air vent groove for allowing the gas in the second air chamber to enter the first air chamber is provided on the air jet cylinder.

[0014] Optionally, the adjustment assembly includes a connection groove provided on the side wall of the second air chamber and a vertically arranged spring. The air vent groove is provided on the outer side wall of the air jet cylinder and corresponds to the connection groove. The two ends of the spring are respectively connected to the upper end surface of the air jet cylinder and the top wall of the second air chamber; when the spring and the air jet cylinder are not subjected to external forces, the spring will cause the air jet cylinder to rise above the camera's imaging area, and the air vent groove is located above the connection groove; when the air jet cylinder descends, such that the second air chamber communicates with the air vent groove through the connection groove, the air jet holes will correspond to the camera's imaging area.

[0015] In summary, the present application includes the following beneficial technical effects:

[0016] 1. The power supply is used to supply power to the camera, the display screen, and the processor. The processor is used to receive the video signal captured by the camera and transmit it to the display screen, so that the worker can only observe the situation inside the chimney through the display screen outside the chimney, and thus make timely responses;

[0017] 2. By winding the pulling rope with the winch, the pulling rope can pull the camera to rise; by unwinding the pulling rope with the winch, the camera will descend due to its own gravity, thereby realizing the adjustment of the height of the camera and adjusting the monitoring area of the monitoring mechanism;

[0018] 3. When it is necessary to clean the imaging area of the camera, the air pump will ventilate the second air chamber through the air pump. The pressure in the second air chamber will gradually increase, and the gradually pressurized gas will press down the air jet cylinder until the connection groove communicates with the second air chamber and the ventilation groove. At this time, the air jet holes will correspond to the imaging area of the camera. The gas in the second air chamber can enter the first air chamber through the connection groove and the ventilation groove, and the gas in the first air chamber will be ejected through the air jet holes, forming a high-speed air flow that impacts the imaging area of the camera, so that the dust on the imaging area of the camera is blown away, thus ensuring the normal operation of the camera. Brief Description of the Drawings

[0019] Figure 1 is the schematic cross-sectional structure diagram of the whole in the embodiment of the present application;

[0020] Figure 2 is the schematic structural diagram of the camera and the cleaning mechanism in the embodiment of the present application;

[0021] Figure 3 is the schematic cross-sectional structure diagram of the camera and the cleaning mechanism in the embodiment of the present application;

[0022] Figure 4 is the schematic cross-sectional structure diagram inside the air jet cylinder and the counterweight cylinder in the embodiment of the present application.

[0023] Reference Numerals: 1, monitoring mechanism; 11, camera; 12, display screen; 13, processor; 14, power supply; 2, lifting mechanism; 21, winch; 22, fixed pulley; 23, pulling rope; 24, connecting rope; 3, cleaning mechanism; 31, air jet cylinder; 311, first air chamber; 312, air jet holes; 313, ventilation groove; 32, inflation assembly; 321, air pump; 322, counterweight cylinder; 323, second air chamber; 324, air pipe; 33, adjustment assembly; 331, connection groove; 332, spring. Detailed Embodiment

[0024] The following will further describe the present application in detail Figures 1-4 with reference to the accompanying drawings.

[0025] The embodiment of the present application discloses a video monitoring device. As Figure 1 shown, a video monitoring device includes a monitoring mechanism 1, a lifting mechanism 2, and a cleaning mechanism 3. The monitoring mechanism 1 is used to monitor the inside of the chimney; the lifting mechanism 2 is used to drive the monitoring mechanism 1 to lift, thereby adjusting the monitoring area of the monitoring mechanism 1; the cleaning mechanism 3 is used to clean the dust on the monitoring mechanism 1, ensuring the normal use of the monitoring mechanism 1.

[0026] The monitoring mechanism 1 includes a camera 11 located inside the chimney, a display screen 12 located outside the chimney, a processor 13, and a power supply 14. The camera 11 and the display screen 12 are both coupled to the processor 13. The power supply 14 is used to supply power to the camera 11, the display screen 12, and the processor 13. The processor 13 is used to receive the video signal captured by the camera 11 and transmit it to the display screen 12, so that workers can only observe the situation inside the chimney through the display screen 12 outside the chimney, and thus make timely responses.

[0027] It should be noted that the camera 11 is a 360-degree panoramic camera 11, which increases the monitoring area and ensures that workers can timely learn about the situation inside the chimney.

[0028] The lifting mechanism 2 includes a winch 21 located outside the chimney and several fixed pulleys 22. A pulling rope 23 is wound around the winch 21. The pulling rope 23 sequentially bypasses each fixed pulley 22 and is connected to the camera 11. The fixed pulley 22 is rotatably connected to the chimney. By winding the pulling rope 23, the winch 21 can pull the pulling rope 23 to lift the camera 11; by unwinding the pulling rope 23, the camera 11 will descend due to its own gravity, thus realizing the adjustment of the height where the camera 11 is located.

[0029] One end of the pulling rope 23 far from the winch 21 is connected to the top of the camera 11 through several connecting ropes 24, realizing the multi-point connection between the pulling rope 23 and the camera 11, thereby improving the stability of the camera 11.

[0030] As Figures 2 to 4 shown, the cleaning mechanism 3 includes an air jet cylinder 31 located inside the chimney, an air inflation assembly 32, and an adjustment assembly 33. The air inflation assembly 32 includes an air pump 321 located outside the chimney and an annular counterweight located inside the chimney. The annular counterweight is a counterweight cylinder 322. The camera 11 is fixedly embedded in the counterweight cylinder 322. The counterweight cylinder 322 will make the camera 11 not easily shake in the air during use due to its own gravity and its cooperation relationship with the camera 11.

[0031] A first air chamber 311 is provided between the inner wall and the outer wall of the air jet cylinder 31. The camera 11 is located inside the air jet cylinder 31. Several air jet holes 312 communicating with the first air chamber 311 and facing the imaging area of the camera 11 are provided on the inner wall of the air jet cylinder 31.

[0032] The air pump 321 inflates the first air chamber 311 through the counterweight cylinder 322. That is, a second air chamber 323 is provided between the inner wall and the outer wall of the counterweight cylinder 322. The air pump 321 is connected to the second air chamber 323 through an air pipe 324; the air jet cylinder 31 is slidably embedded in the second air chamber 323 in the vertical direction, and an air vent groove 313 for the gas in the second air chamber 323 to enter the first air chamber 311 is provided on the air jet cylinder 31.

[0033] The adjusting assembly 33 includes a connecting groove 331 provided on the side wall of the second air chamber 323, and a plurality of vertically arranged springs 332. The ventilation groove 313 is provided on the outer side wall of the air jet cylinder 31 and corresponds to the connecting groove 331. The two ends of the spring 332 are respectively connected to the upper end surface of the air jet cylinder 31 and the top wall of the second air chamber 323.

[0034] During the use of the camera 11, the air pump 321 will be closed, and neither the spring 332 nor the air jet cylinder 31 is subject to external force. The spring 332 will cause the air jet cylinder 31 to rise above the imaging area of the camera 11, making it difficult for the air jet cylinder 31 to block the camera 11, and the air jet cylinder 31 will completely sink into the second air chamber 323, making it difficult for external dust to enter the first air chamber 311 through the air jet holes 312. At the same time, the ventilation groove 313 will be located above the connecting groove 331, making the first air chamber 311 and the second air chamber 323 not communicate with each other.

[0035] When it is necessary to clean the imaging area of the camera 11, the air pump 321 will ventilate the second air chamber 323 through the air pump 321. Since the second air chamber 323 is not connected to the first air chamber 311, the pressure in the second air chamber 323 will gradually increase. The gradually pressurized gas will push down the air jet cylinder 31 until the connecting groove 331 communicates with the second air chamber 323 and the ventilation groove 313. At this time, the air jet holes 312 will correspond to the imaging area of the camera 11, and the gas in the second air chamber 323 can enter the first air chamber 311 through the connecting groove 331 and the ventilation groove 313. The gas in the first air chamber 311 will be ejected through the air jet holes 312, forming a high-speed air flow that impacts the imaging area of the camera 11, so that the dust on the imaging area of the camera 11 is blown away, thus ensuring the normal operation of the camera 11.

[0036] It should be noted that when the gas in the second air chamber 323 enters the first air chamber 311 through the connecting groove 331 and the ventilation groove 313, the pressure in the second air chamber 323 will decrease. At this time, the spring 332 will cause the air jet cylinder 31 to rise a short distance due to its own restoring force, making the communication port between the connecting groove 331 and the second air chamber 323 smaller. The gas in the second air chamber 323 cannot be discharged into the first air chamber 311 through the connecting groove 331 and the ventilation groove 313 in time, resulting in an increase in the pressure in the second air chamber 323. The gas will push the air jet cylinder 31 down a short distance, so that the gas in the second air chamber 323 can enter the first air chamber 311 through the connecting groove 331 and the ventilation groove 313 in time. Therefore, during the cleaning process of the imaging area of the camera 11, the air jet cylinder 31 will repeatedly rise and fall in the second air chamber 323, making the air flow velocity ejected from the air jet holes 312 change continuously, thereby improving the cleaning effect of the dust on the imaging area of the camera 11.

[0037] The implementation principle of a video surveillance device in an embodiment of this application is as follows: During the use of the camera 11, the spring 332 will cause the air jet cylinder 31 to rise above the imaging area of the camera 11, making it difficult for the air jet cylinder 31 to block the camera 11, and the air jet cylinder 31 will completely sink into the second air chamber 323, making it difficult for external dust to enter the first air chamber 311 through the air jet holes 312. At the same time, the worker can wind or unwind the pulling rope 23 through the winch 21, thereby changing the height of the camera 11 and adjusting the monitoring area of the camera 11. In addition, the processor 13 is used to receive the video signal captured by the camera 11 and transmit it to the display screen 12, so that the worker can only observe the situation inside the chimney through the display screen 12 outside the chimney, and thus make timely responses.

[0038] When it is necessary to clean the imaging area of the camera 11, the air pump 321 will ventilate the second air chamber 323 through the air pump 321. Since the second air chamber 323 is not connected to the first air chamber 311, the pressure in the second air chamber 323 will gradually increase. The gradually pressurized gas will press down the air jet cylinder 31 until the connection groove 331 communicates with the second air chamber 323 and the ventilation groove 313. At this time, the air jet holes 312 will correspond to the imaging area of the camera 11. The gas in the second air chamber 323 can enter the first air chamber 311 through the connection groove 331 and the ventilation groove 313. The gas in the first air chamber 311 will be ejected through the air jet holes 312, forming a high-speed airflow that impacts the imaging area of the camera 11, so that the dust on the imaging area of the camera 11 is blown away, thus ensuring the normal operation of the camera 11.

[0039] It should be noted that when the gas in the second air chamber 323 enters the first air chamber 311 through the connection groove 331 and the ventilation groove 313, the pressure in the second air chamber 323 will decrease. At this time, the spring 332 will cause the air jet cylinder 31 to rise a small distance due to its own restoring force, making the communication port between the connection groove 331 and the second air chamber 323 smaller. The gas in the second air chamber 323 cannot be discharged into the first air chamber 311 through the connection groove 331 and the ventilation groove 313 in time, resulting in an increase in the pressure in the second air chamber 323. The gas will press down the air jet cylinder 31 a small distance, so that the gas in the second air chamber 323 can enter the first air chamber 311 through the connection groove 331 and the ventilation groove 313 in time. Therefore, during the cleaning process of the imaging area of the camera 11, the air jet cylinder 31 will repeatedly rise and fall in the second air chamber 323, making the airflow velocity ejected from the air jet holes 312 change continuously, thereby improving the cleaning effect of the dust on the imaging area of the camera 11.

[0040] The above are all preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A video surveillance device, characterized in that: it includes a monitoring mechanism (1), a lifting mechanism (2) and a cleaning mechanism (3); The monitoring mechanism (1) includes a camera (11) located inside the chimney, a display screen (12) located outside the chimney, a processor (13) and a power supply (14). The camera (11) and the display screen (12) are both coupled to the processor (13). The processor (13) is used to receive the video signal captured by the camera (11) and transmit it to the display screen (12). The power supply (14) is used to supply power to the camera (11), the display screen (12) and the processor (13); The lifting mechanism (2) is used to drive the camera (11) to lift and lower; The cleaning mechanism (3) includes an air jet cylinder (31) located inside the chimney, an air inflation component (32) and an adjustment component (33). A first air chamber (311) is provided between the inner wall and the outer wall of the air jet cylinder (31). The camera (11) is located inside the air jet cylinder (31). A plurality of air jet holes (312) communicating with the first air chamber (311) and facing the imaging area of the camera (11) are provided on the inner wall of the air jet cylinder (31); The air inflation component (32) is used for the camera (11) to be installed and for inflating the first air chamber (311); The adjustment component (33) is installed on the air inflation component (32) and is used to drive the air jet cylinder (31) to lift and lower; The lifting mechanism (2) includes a winch (21) located outside the chimney and a plurality of fixed pulleys (22). A pulling rope (23) is wound around the winch (21). The pulling rope (23) sequentially bypasses each fixed pulley (22) and is connected to the camera (11). The fixed pulley (22) is rotatably connected to the chimney; The air inflation component (32) includes an air pump (321) located outside the chimney and an annular counterweight located inside the chimney. The camera (11) is fixedly embedded in the annular counterweight. The air pump (321) inflates the first air chamber (311) through the annular counterweight; The annular counterweight is a counterweight cylinder (322). A second air chamber (323) is provided between the inner wall and the outer wall of the counterweight cylinder (322). The air pump (321) is connected to the second air chamber (323) through an air pipe (324); The air jet cylinder (31) is slidably embedded in the second air chamber (323) in the vertical direction, and an air vent groove (313) for the gas in the second air chamber (323) to enter the first air chamber (311) is provided on the air jet cylinder (31); The adjusting component (33) includes a connecting groove (331) provided on the side wall of the second air chamber (323), and a vertically arranged spring (332). The air vent groove (313) is provided on the outer side wall of the jet cylinder (31) and corresponds to the connecting groove (331). The two ends of the spring (332) are respectively connected to the upper end surface of the jet cylinder (31) and the top wall of the second air chamber (323). When the spring (332) and the jet cylinder (31) are not subject to external forces, the spring (332) will urge the jet cylinder (31) to rise above the imaging area of the camera (11), and the air vent groove (313) is located above the connecting groove (331). When the jet cylinder (31) descends so that the second air chamber (323) communicates with the air vent groove (313) through the connecting groove (331), the jet holes (312) will correspond to the imaging area of the camera (11).

2. A video surveillance device according to claim 1, characterized in that: One end of the pulling rope (23) far away from the winch (21) is connected to the top of the camera (11) through a plurality of connecting ropes (24).

Images