Video signal wireless transmission system for working face of underground mining area

Abstract

The utility model belongs to the technical field of mine underground video monitoring, and relates to an underground mining area working face video signal wireless transmission system. Comprising a mining camera and a mining power box which are installed in a working face area in a mine, and the mining camera is electrically connected with the mining power box; the optical fiber transceiver and the wireless directional network bridge A are installed in a mine transverse drift port area, and the wireless directional network bridge B is installed in a working face area in a mine. The optical fiber transceiver uploads a video signal through an optical fiber, and the wireless directional network bridge A and the wireless directional network bridge B transmit a wireless signal to each other; the wireless directional network bridge A is in communication connection with the optical fiber transceiver, and the wireless directional network bridge B is in communication connection with the mining camera. By adopting the scheme, the problem that the wireless video monitoring range is limited in the prior art is solved; the mining camera can be flexibly arranged at a proper position; the construction cost is saved, and the safety risk is reduced; and high-speed stable transmission of large-bandwidth video signals is also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of underground mine video monitoring, in particular to a wireless transmission system for video signals of an underground mining area working surface. Background Art

[0002] The working conditions of the underground mining area of ​​the mine are poor, and supervision is inconvenient, especially the safety inspections such as knocking and asking the top before the operation of the on-site workers cannot be monitored in real time. The original underground mining area working surface was installed with video cameras to record the safety inspections and the operation process before the operation. After the operation is completed, the on-site workers will take the camera to the designated location on the surface to upload the video. The safety supervisor will then conduct random inspections on the uploaded videos to check whether the safety inspections before the operation of the workers in the video were carried out and whether there were any violations during the operation. However, this solution cannot monitor the operation process in real time, and can only spot check the video afterwards. Even if the operator's violation of regulations is found in the video, the relevant violators can only be assessed and punished. It is impossible to monitor the operation behavior and safety of the operators in the underground mining area in real time.

[0003] A more prominent solution is the Chinese patent with publication number CN214799690U, which discloses a coal mine underground wireless video system: used for underground wireless monitoring communication, including a mine explosion-proof monitor, a mine explosion-proof and intrinsically safe wireless switch, a mine intrinsically safe wireless camera and a mine encapsulated and intrinsically safe power supply box, the mine explosion-proof monitor and the mine explosion-proof and intrinsically safe wireless switch are communicated with each other, the mine explosion-proof and intrinsically safe wireless switch is communicated with the mine intrinsically safe wireless camera, and the mine intrinsically safe wireless camera is electrically connected to the mine encapsulated and intrinsically safe power supply box; wherein, the mine explosion-proof monitor is used to display images on site; wherein, the mine explosion-proof and intrinsically safe wireless switch also includes a wireless AP and a directional high-strength signal antenna for building a WIFI wireless broadband network signal environment. Although this solution realizes underground wireless video monitoring compared with the traditional method, the wireless signal range is limited to 300 meters because the WIFI signal transmission distance of the wireless switch is within 300 meters. If the monitoring signal area needs to be extended, it is necessary to change the setting position of the wireless switch, or add multiple wireless switches, and the wireless switch still needs to use a wired connection to upload the video signal. The environment in the underground tunnel is harsh, and laying cables to adapt to wireless switches in different locations not only increases the construction cost, but also poses many safety risks. At the same time, in the existing technology, the network signals of the equipment are all transmitted by electrical signals. Because the transmission distance and transmission bandwidth of ordinary network cables are limited, the simultaneous transmission of multiple high-definition video signals that occupy a large bandwidth will be limited, and problems such as freezing and delays are prone to occur. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a wireless transmission system for video signals of the working face in an underground mining area, which solves the problem that although the video surveillance in the prior art has achieved wireless transmission, the range of wireless video surveillance is limited due to the small range of the wireless signal; it also avoids the need to add multiple wireless switches in the tunnel and avoids the need to lay additional cables for the wireless switches, effectively saving construction costs and greatly reducing safety risks.

[0005] In order to solve the above-mentioned technical problems, the utility model provides the following core technical solutions: a wireless transmission system for video signals of an underground mining area working face, comprising a mining camera and a mining power box installed in the working face area in the mine, wherein the mining camera is electrically connected to the mining power box; further comprising an optical fiber transceiver and a wireless directional bridge A installed in the vein mouth area of ​​the mine, and a wireless directional bridge B installed in the working face area in the mine; the optical fiber transceiver uploads the video signal via an optical fiber, and the wireless directional bridge A and the wireless directional bridge B transmit wireless signals to each other; the wireless directional bridge A is communicatively connected to the optical fiber transceiver, and the wireless directional bridge B is communicatively connected to the mining camera.

[0006] By adopting this technical solution, the wireless transmission distance of video surveillance in the mine can be up to several kilometers, which increases the video surveillance range and avoids the need to set up more network equipment and lay long-distance cables in the tunnel. While saving costs, it also maximizes the safety and stability of the equipment and ensures high-speed and stable transmission of large-bandwidth video signals.

[0007] Furthermore, based on the above core technical solution, the fiber optic transceiver is arranged in a mine distribution box, which also includes a circuit breaker, a socket, and a switching power supply; the circuit breaker is electrically connected to the socket, and the socket is electrically connected to the switching power supply to provide power for the fiber optic transceiver.

[0008] Furthermore, based on the above core technical solution, the working surface area in the mine also includes a wireless AP that provides WIFI signals, the mine camera is a mine wireless camera, the wireless AP is connected to the wireless directional bridge B, and the mine wireless camera is connected to the wireless AP via WIFI signals. Furthermore, the number of mine wireless cameras is greater than 1, and multiple wireless cameras can be connected to the wireless AP via WIFI signals at the same time. The number of mine power boxes is the same as that of mine wireless cameras, and each provides power.

[0009] Furthermore, based on the above core technical solution, the mining camera used is an intrinsically safe mining camera.

[0010] Furthermore, based on the above core technical solution, the mine power box adopts a mine-used cast-in-place and intrinsically safe power box.

[0011] Furthermore, based on the above core technical solution, the communication connection uses a Category 6a composite network cable.

[0012] The wireless transmission system of video signals of the underground mining working surface not only realizes the real-time uploading of the video monitoring signals of the underground working surface, but also allows the safety supervisors to receive the video signals through the background and monitor the working process and safety situation of the underground mining working surface in real time, which is beneficial to safety supervision; it also enables the wireless transmission distance of video monitoring in the mine to be up to several kilometers, greatly increasing the video monitoring range; it also avoids the problem of setting up more network equipment and laying long-distance cables in the tunnel, reduces the amount of cable laying engineering, reduces the labor of construction personnel, saves construction costs, and reduces safety risks; it ensures the fast and stable transmission of video monitoring signals between equipment; it can also realize multi-camera monitoring video shooting and recording, and is convenient for adding and reducing camera equipment at any time, and the alternating use of multiple groups of mining cameras and mining power boxes prolongs the working time of monitoring videos; it ensures the high-speed and stable uploading of large-bandwidth video signals; and avoids the potential safety hazards caused by the working process of various electrical equipment to the environment in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0014] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model.

[0015] In the figure: 1. Mining camera; 2. Mining power box; 3. Fiber optic transceiver; 4. Wireless directional bridge A; 5. Wireless directional bridge B; 6. Mining distribution box; 7. Circuit breaker; 8. Socket; 9. Switching power supply; 10. Wireless AP. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Definition of terms:

[0018] "Electrical connection" is the form of connection between different electrical devices or components through the transmission of current through wires;

[0019] "Communication connection" refers to the form of connection between different network devices through the transmission of signals via network cables or wirelessly;

[0020] "Intrinsically safe" is the abbreviation of intrinsically safe type, which is an explosion-proof type of electrical equipment;

[0021] "Pouring and sealing" is a physical isolation measure, which mainly involves wrapping hazardous chemicals in containers and sealing and isolating hazardous goods by pouring solids;

[0022] "Wireless AP" is a device that provides a wireless signal access point, commonly known as a "hotspot".

[0023] Embodiment 1:

[0024] like Figure 1 As shown, a wireless transmission system for video signals of an underground mining area working face includes a mine wireless camera 1 and a mine power supply box 2 installed in the working face area of ​​the mine, and an optical fiber transceiver 3 installed in the mine vein mouth area. The optical fiber transceiver 3 is arranged in a mine distribution box 6, which can ensure that the optical fiber transceiver 3 and other equipment can work safely and stably without being affected by the harsh environment, and can also avoid the potential safety hazards caused by electrical sparks during the operation of the equipment. The mine distribution box 6 also includes a circuit breaker 7, a socket 8, and a switching power supply 9; the circuit breaker 7 is electrically connected to the socket 8, and the socket 8 is electrically connected to the switching power supply 9 to provide power for the optical fiber transceiver 3, while also protecting the normal operation of the circuit breaker, the socket, and the switching power supply to avoid being affected by the harsh environment in the mine, and also avoiding the potential safety hazards caused by electrical sparks during the operation of the equipment; the mine wireless camera 1 is electrically connected to the mine power supply box 2, and the mine power supply box 2 supplies power to the mine wireless camera 1 to provide the power required for the mine wireless camera 1 to operate normally for more than 8 hours, and the optical fiber transceiver 3 uploads the video signal through the optical fiber; a wireless directional bridge A4 installed in the mine vein mouth area and a wireless directional bridge B5 installed in the working surface area in the mine are also provided; the wireless directional bridge A4 and the wireless directional bridge B5 transmit wireless signals to each other; the wireless directional bridge A4 is communicatively connected to the optical fiber transceiver 3, and the video signal can be directly transmitted to the optical fiber transceiver through the network cable. A wireless AP10 providing WIFI signals is also set up in the working area of ​​the mine. The wireless AP10 is communicated with the wireless directional bridge B5. The mine wireless camera 1 is connected to the wireless AP10 via the WIFI signal. This connection method makes the location of the wireless camera 1 unrestricted and can be set in a safer and more convenient area according to the on-site conditions.

[0025] The adoption of this technical solution not only realizes the real-time uploading of the video monitoring signal of the underground working face, but also allows the safety supervisors to receive the video signal through the background and monitor the working process and safety situation of the underground mining area in real time, which is beneficial to safety supervision; it also enables the wireless transmission distance of the video monitoring in the mine to be up to several kilometers, greatly increasing the video monitoring range; the position of the mining camera is not affected by the position of the wireless directional bridge B5, and can be flexibly set at a suitable position; it also avoids the need to set up more network equipment and lay long-distance cables in the tunnel, reduces the amount of cable laying, reduces the workload of construction personnel, saves construction costs, and reduces safety risks; it ensures the fast and stable transmission of video monitoring signals between devices; it also ensures the high-speed and stable upload of large-bandwidth video signals.

[0026] Embodiment 2:

[0027] A wireless transmission system for video signals of working faces in underground mining areas, comprising three intrinsically safe mining wireless cameras 1 and three mining-used cast-in-place and intrinsically safe power supply boxes 2 installed in the working face area in the mine, and an optical fiber transceiver 3 installed in the mine vein mouth area. The use of intrinsically safe equipment further ensures the safety of the mine environment. The three intrinsically safe mining wireless cameras 1 are electrically connected to the three mining-used cast-in-place and intrinsically safe power supply boxes 2 respectively; the three groups of equipment are connected separately, which not only ensures that the operation time of each wireless camera 1 is long enough, but also ensures that the setting positions of multiple devices do not affect each other. It realizes the shooting and recording of monitoring videos from multiple camera positions, and is convenient for adding and reducing camera equipment at any time. Multiple groups of mining cameras and mining power supply boxes are used alternately, which can also extend the working time of monitoring videos. The optical fiber transceiver 3 uploads video signals via optical fiber. A wireless directional bridge A4 installed in the mine vein mouth area and a wireless directional bridge B5 installed in the working face area in the mine are also provided; the wireless directional bridge A4 and the wireless directional bridge B5 transmit wireless signals to each other, and the wireless directional bridge A4 is connected to the optical fiber transceiver 3 in communication, and the video signal can be directly transmitted to the optical fiber transceiver 3 through the network cable. A wireless AP10 providing WIFI signals is also provided in the working face area in the mine, and the wireless AP10 is connected to the wireless directional bridge B5 in communication, and three intrinsically safe mine wireless cameras 1 are connected to the wireless AP10 through WIFI signals. This connection mode makes the positions of the three wireless cameras 1 unrestricted, and they can be set in a safer and more convenient area according to the on-site conditions; the communication connection uses a Category 6 composite network cable, which has a larger network transmission bandwidth and better stability, and can ensure the fast and stable transmission of video monitoring signals between devices.

[0028] The adoption of this technical solution not only realizes the real-time uploading of the video monitoring signal of the underground working face, but also allows the safety supervisors to receive the video signal through the background and monitor the working process and safety situation of the underground mining area working face in real time, which is beneficial to safety supervision; it also enables the wireless transmission distance of the video monitoring in the mine to be as long as several kilometers, greatly increasing the video monitoring range; the position of the mining camera is not affected by the position of the wireless directional bridge B5, and can be flexibly set at a suitable position; it also avoids the problem of setting up more network equipment and laying long-distance cables in the tunnel, reduces the amount of cable laying engineering, reduces the labor of construction personnel, saves costs, and maximizes the safety and stability of the equipment; at the same time, it can realize the shooting and recording of monitoring video from multiple camera positions, and is convenient to add or reduce camera equipment at any time. Multiple groups of mining cameras and mining power boxes are used alternately to extend the working time of the monitoring video; it avoids the safety hazards caused by the working process of various electrical equipment to the environment in the mine.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A wireless transmission system for video signals of an underground mining area working surface, comprising a mining camera and a mining power supply box installed in the working surface area of ​​the mine, wherein the mining camera is electrically connected to the mining power supply box, and is characterized in that: It also includes a fiber optic transceiver and a wireless directional bridge A installed in the vein mouth area of ​​the mine, and a wireless directional bridge B installed in the working surface area of ​​the mine; the fiber optic transceiver uploads video signals through optical fibers, and the wireless directional bridge A and the wireless directional bridge B transmit wireless signals to each other; the wireless directional bridge A is communicatively connected to the fiber optic transceiver, and the wireless directional bridge B is communicatively connected to the mining camera.

2. The wireless transmission system for video signals of underground mining area working surface according to claim 1 is characterized by: The optical fiber transceiver is arranged in a mine distribution box, which also includes a circuit breaker, a socket, and a switching power supply. The circuit breaker is electrically connected to the socket, and the socket is electrically connected to the switching power supply to provide power for the optical fiber transceiver.

3. The wireless transmission system for video signals of underground mining area working surface according to claim 1 is characterized in that: The working surface area in the mine also includes a wireless AP that provides WIFI signals. The mining camera is a mining wireless camera. The wireless AP is communicatively connected to the wireless directional bridge B. The mining wireless camera is connected to the wireless AP via WIFI signals.

4. The wireless transmission system for video signals of underground mining area working surface according to claim 3 is characterized in that: The number of the mine-used wireless cameras is greater than 1, and the number of the mine-used power supply boxes is consistent with the number of the mine-used wireless cameras.

5. The wireless transmission system for video signals of underground mining area working surface according to claim 1 is characterized by: The mining camera is an intrinsically safe mining camera.

6. The wireless transmission system for video signals of underground mining area working surface according to claim 1 is characterized by: The mine power supply box is a mine-used encapsulated and intrinsically safe power supply box.

7. The wireless transmission system for video signals of underground mining area working surface according to claim 1 is characterized by: The communication connection uses a Category 6a composite network cable.

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