Coal mine working face pan-tilt camera monitoring system

Abstract

The utility model discloses a coal mine working face pan-tilt camera monitoring system which comprises a pan-tilt camera, a fixing support, a switch and a voltage-stabilized source. The bottom ends of the fixing supports are fixedly connected with the hydraulic supports, the top ends of the fixing supports are fixedly connected with the pan-tilt cameras, the pan-tilt cameras on every two adjacent hydraulic supports share one switch and one stabilized power supply, and the two pan-tilt cameras are in circuit connection with the shared switch and the shared stabilized power supply respectively. And the shared switch and the voltage-stabilized source are fixedly connected to the fixed bracket on which any holder camera connected with the switch and the voltage-stabilized source is mounted. According to the utility model, important positions in a coal mining environment are all located in the monitoring range of the pan-tilt camera, so that the situation that the key positions cannot be fully monitored due to the fact that a camera in a traditional monitoring structure has a monitoring blind area is avoided, and the safety of coal mine construction operation is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coal mining, especially to a coal face PTZ camera monitoring system. BACKGROUND

[0002] In modern coal mining operations, it is crucial to ensure the safety and efficient operation of the coal face. Patent No. ZL202220981360.4 discloses a monitoring device for coal mine safety production, which realizes the monitoring operation of the coal mining environment by installing a camera on the sidewall of the roadway; however, due to the limited installation position, the camera is prone to blind spots in monitoring, especially in complex underground environments, which may result in insufficient monitoring of critical areas, affecting the safety of coal mining construction, and improvement is necessary. SUMMARY

[0003] The utility model aims at the above problem, provides a coal face PTZ camera monitoring system with simple structure and improved coal mining environment monitoring effect.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A coal face PTZ camera monitoring system, comprising a PTZ camera for collecting images of the working face, a fixing bracket for fixing the PTZ camera on a hydraulic support, a switch for signal transmission of the PTZ camera, and a stabilized power supply for powering the switch and the PTZ camera; the bottom end of the fixing bracket is fixedly connected with the hydraulic support, and the top end of the fixing bracket is fixedly connected with the PTZ camera; the PTZ cameras on two adjacent hydraulic supports share one switch and one stabilized power supply, and the two PTZ cameras are respectively connected with the shared switch and stabilized power supply; the shared switch and stabilized power supply are fixedly connected to the fixing bracket on which any PTZ camera is installed.

[0006] Further, the fixing bracket has a three-layer structure, the PTZ camera is fixedly connected to the third layer structure at the top end of the fixing bracket, the switch is fixedly connected to the second layer structure in the middle of the fixing bracket, and the stabilized power supply is fixedly connected to the first layer structure at the bottom end of the fixing bracket.

[0007] Further, the fixed support comprises a first support plate, a second support plate, a first storage plate, a second storage plate and a third storage plate, the first support plate and the second support plate are vertically arranged symmetrically, the bottom ends of the first support plate and the second support plate are outwardly bent to form mounting portions and are fixedly connected with the base at the bottom end of the hydraulic support through the mounting portions, the first storage plate, the second storage plate and the third storage plate are sequentially arranged from bottom to top, the first storage plate, the second storage plate and the third storage plate are located between the first support plate and the second support plate, and the opposite faces of the first support plate and the second support plate are fixedly connected with the two ends of the first storage plate, the second storage plate and the third storage plate respectively; the top end of the third storage plate is fixedly connected with two symmetrically arranged positioning columns; the holder camera is fixedly connected on the positioning column or the third storage plate; the switch is fixedly connected on the second storage plate; and the stabilized power supply is fixedly connected on the first storage plate.

[0008] Further, among the holder cameras on the two adjacent hydraulic supports, one holder camera is fixedly connected on the third storage plate of the installed fixed support, and the other holder camera is fixedly connected on the positioning column of the installed fixed support.

[0009] Further, the first storage plate and the second storage plate are provided with wire winding grooves on the front and back sides of the one end close to the second support plate, the wire winding grooves are provided with first connecting ears at one end and are connected with wire blocking rods through the first connecting ears, the wire winding grooves are provided with second connecting ears at the other end, the wire blocking rods are provided with first mounting holes at the one end away from the first connecting ears, and the first mounting holes are connected with second mounting holes arranged on the second connecting ears through a bayonet.

[0010] Further, the coal mine working face holder camera monitoring system further comprises an uphole monitoring host and a downhole monitoring host, and the uphole monitoring host and the downhole monitoring host are connected with the switch through the downhole ring network and realize signal transmission.

[0011] Further, the coal mine working face holder camera monitoring system further comprises a splicing server for splicing and combining the pictures taken by the holder cameras, the splicing server is connected with the downhole ring network through a mine optical cable and realizes signal transmission, the signal input end of the splicing server is connected with the switch through the downhole ring network in network communication, and the signal output end of the splicing server is connected with the uphole monitoring host and the downhole monitoring host in network communication through the downhole ring network, so as to transmit the spliced video to the uphole monitoring host and the downhole monitoring host for viewing.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] This invention features a design that mounts a pan-tilt camera on the base of each hydraulic support via a fixed bracket. This allows the top angle of the pan-tilt camera to monitor the junction between the hydraulic support beam and the coal face, while the bottom angle can monitor the lower edge of the coal mining machine. This ensures that all important locations within the coal mining environment are within the monitoring range of the pan-tilt camera, avoiding the blind spots that occur in traditional monitoring structures, which prevent critical locations from being adequately monitored. This effectively guarantees the safety of coal mine operations.

[0014] On the other hand, by using a design where two pan-tilt cameras share a single switch and a single regulated power supply, this invention effectively reduces the cost of monitoring system components while achieving full-area monitoring of the coal mine environment. Simultaneously, the design of a three-layer structural bracket for separately mounting the regulated power supply, switch, and pan-tilt camera optimizes the space utilization within the coal mine, reduces electromagnetic interference from the switch and regulated power supply to the pan-tilt camera, enhances the signal transmission stability of the monitoring system, and further improves the effectiveness of this invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 Logical diagram of the connection framework for the monitoring system;

[0017] Figure 2 This is a schematic diagram of the fixed support structure;

[0018] Figure 3 This is a structural diagram of the barrier bar in its open state.

[0019] Figure 4 This is a structural diagram of the closed state of the barrier arm;

[0020] Figure 5 This is a schematic diagram of the interface of a regulated power supply.

[0021] Figure 6 This is a schematic diagram of the switch interfaces. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0023] like Figures 1 to 6 As shown in the figure, this embodiment discloses a coal mine working face pan-tilt camera monitoring system, including a pan-tilt camera for acquiring working face images, a fixed bracket for fixing the pan-tilt camera on a hydraulic support, a switch for signal transmission of the pan-tilt camera, and a regulated power supply for powering the switch and the pan-tilt camera; the bottom end of the fixed bracket is fixedly connected to the hydraulic support, and the top end of the fixed bracket is fixedly connected to the pan-tilt camera; pan-tilt cameras on two adjacent hydraulic supports share a switch and a regulated power supply, and the two pan-tilt cameras are respectively connected to the shared switch and regulated power supply lines; the shared switch and regulated power supply are fixedly connected to the fixed bracket on which any pan-tilt camera connected to them is installed.

[0024] The pan-tilt camera has the ability to remotely control rotation and tilt angles, which can promptly correct blind spots caused by installation position errors, ensuring that critical areas are always under effective monitoring. Furthermore, the preset point function allows the pan-tilt camera to automatically return to the preset observation position within specified time intervals, guaranteeing continuous monitoring of important areas.

[0025] like Figure 5 As shown, the regulated power supply 8 should be equipped with at least two 127V power cord interfaces 81 and 82 and one 12V power cord quick connector 83. The 127V power cord interfaces 81 and 82 are used for interconnection between power supplies; the 12V power cord quick connector 83 is used to power the switch; the 127V power cord interfaces are not limited to horn-shaped or quick connectors.

[0026] like Figure 6 As shown, the switch 9 is equipped with at least 5 quick-connect ports for connecting to a pan-tilt camera; quick-connect ports 91 and 95 are used for interconnection between switches 9, quick-connect ports 92 and 94 are used for connecting cameras, and quick-connect port 93 is used for connecting a power supply for 12V power; the switch 9 can be equipped with an LED display screen 96, which is used to display the working status of the switch and the connected camera.

[0027] In the design, each hydraulic support is equipped with a pan-tilt camera, every two hydraulic supports are equipped with a switch, and every two hydraulic supports are equipped with a regulated power supply.

[0028] The fixed bracket has a three-layer structure. The pan-tilt camera is fixedly connected to the third layer at the top of the fixed bracket, the switch is fixedly connected to the second layer in the middle of the fixed bracket, and the regulated power supply is fixedly connected to the first layer at the bottom of the fixed bracket.

[0029] The fixed support includes a first support plate 1, a second support plate 2, a first placement plate 3, a second placement plate 4, and a third placement plate 5. The first support plate 1 and the second support plate 2 are symmetrically and vertically arranged. The bottom ends of the first support plate 1 and the second support plate 2 are bent outward at 90° to form a mounting part 7, which is fixedly connected to the base at the bottom of the hydraulic support. The mounting part 7 is located between the two columns near the coal wall. The first placement plate 3, the second placement plate 4, and the third placement plate 5 are arranged sequentially from bottom to top. The first placement plate 3, the second placement plate 4, and the third placement plate 5 are all located between the first support plate 1 and the second support plate 2, and the two ends of the first placement plate 3, the second placement plate 4, and the third placement plate 5 are fixedly connected to the opposite surfaces of the first support plate 1 and the second support plate 2, respectively. Two symmetrically arranged positioning columns 6 are fixedly connected to the top of the third placement plate 5. The pan-tilt camera is fixedly connected to the positioning columns 6 or the third placement plate 5. The switch is fixedly connected to the second placement plate 4. The regulated power supply is fixedly connected to the first placement plate 3.

[0030] Of the two adjacent hydraulic supports, one pan-tilt camera is fixedly connected to the third mounting plate 5 of the installed support, and the other pan-tilt camera is fixedly connected to the positioning column 6 of the installed support. During installation, the center point of the hemisphere of the pan-tilt camera is directly facing the coal wall. After installation, the upper end of the pan-tilt camera's field of view can see the junction between the top beam of the hydraulic support and the coal wall, and the lower end can see the lower edge of the coal mining machine body.

[0031] The first shelf 3 and the second shelf 4 are symmetrically provided with winding grooves 301 on both the front and rear sides of the end near the second support plate 2. The winding grooves are used to accommodate the connecting wire 10 and allow the connecting wire 10 to be wound around the first shelf 3 or the second shelf 4. In the winding groove structure located on the rear side of one end of the first shelf 3 and the second shelf 4, a first connecting ear 302 is provided on the left side of the winding groove 301 and a wire-blocking rod 304 is connected to it by a pin. A second connecting ear 303 is provided on the right side of the winding groove 301. A first mounting hole 3041 is provided on the end of the wire-blocking rod 304 away from the first connecting ear 302. After the wire-blocking rod 304 is rotated, the first mounting hole 3041 corresponds to the second mounting hole 3031 provided on the second connecting ear 303 and is connected by a pin 305. The first connecting ear 302 and the second connecting ear 303 are both fixed on the rear end wall of the first shelf 3 or the second shelf 4.

[0032] When the connecting cables of the voltage regulator and the switch are too long, they can be wound around the first or second shelf using the winding grooves on both sides of the first and second shelf. This prevents the excessively long connecting cables from interfering with the operation of other equipment or being pulled apart by other equipment during construction, thus avoiding situations where monitoring data cannot be transmitted smoothly. After winding, the cable guard and the second connecting ear are connected by a pin to prevent the wire from coming out of the winding groove and scattering if the winding is loose. At the same time, the design position of the winding groove is located on one side of the first and second shelf, which will not affect the installation space of the switch and the voltage regulator, further improving the effectiveness of this utility model.

[0033] By designing two adjacent pan-tilt cameras to be installed at different positions on a fixed platform, a certain height difference is created between them after installation, which facilitates the connection and power supply of a shared switch and voltage regulator.

[0034] The coal mine working face PTZ camera monitoring system also includes a surface monitoring host, an underground monitoring host for viewing the monitoring images, and a splicing server for stitching together the images captured by the various PTZ cameras. The splicing server has multiple video splicing functions, and its specific operation can be found in the published literature [Video Splicing Method for Fully Mechanized Mining Face Based on Semantic Segmentation]. The signal input end of the splicing server is connected to the switch network via the underground ring network, and the signal output end of the splicing server is connected to the surface monitoring host and the underground monitoring host via the underground ring network to transmit the spliced ​​video to the surface monitoring host and the underground monitoring host for viewing.

[0035] After all the switches on the working face are connected, they are connected to the mine's ring network via mining optical cables at the switch ends for transmitting images from the pan-tilt camera. The video splicing server receives video data transmitted from the mine's ring network, performs real-time splicing of multiple video streams, and pushes the spliced ​​images to the surface monitoring host and the underground monitoring host.

[0036] To better display the video after stitching, the surface monitoring host should be a widescreen monitor with an aspect ratio of 32:9; the underground explosion-proof host should be composed of three conventional monitors (with an aspect ratio of 4:3). This display solution can provide a wider field of view, making it easier for operators to fully grasp the dynamic changes of the working face and improve work efficiency.

[0037] This monitoring system receives footage from PTZ cameras via a splicing server and performs real-time splicing of video data transmitted through the mine's ring network, ensuring high-quality and low-latency video streams. This not only enhances monitoring effectiveness but also lays a solid foundation for subsequent data analysis and decision support. Furthermore, the system can connect to the mine's ring network via mining fiber optic cables, seamlessly integrating with existing communication and control systems for convenient management and maintenance. Simultaneously, the system possesses excellent scalability, allowing for upgrades and expansions to meet the needs of coal mine production, thus demonstrating promising market prospects.

[0038] This invention features a design that mounts a pan-tilt camera on the base of each hydraulic support via a fixed bracket. This allows the top angle of the pan-tilt camera to monitor the junction between the hydraulic support beam and the coal face, while the bottom angle can monitor the lower edge of the coal mining machine. This ensures that all important locations within the coal mining environment are within the monitoring range of the pan-tilt camera, avoiding the blind spots that occur in traditional monitoring structures, which prevent critical locations from being adequately monitored. This effectively guarantees the safety of coal mine operations.

[0039] On the other hand, by using a design where two pan-tilt cameras share a single switch and a single regulated power supply, this invention effectively reduces the cost of monitoring system components while achieving full-area monitoring of the coal mine environment. Simultaneously, the design of a three-layer structural bracket for separately mounting the regulated power supply, switch, and pan-tilt camera optimizes the space utilization within the coal mine, reduces electromagnetic interference from the switch and regulated power supply to the pan-tilt camera, enhances the signal transmission stability of the monitoring system, and further improves the effectiveness of this invention.

Claims

1. A coal face pan-tilt-zoom camera monitoring system comprising a pan-tilt-zoom camera for capturing images of the coal face, characterised in that: The coal mine working face holder camera monitoring system further comprises a fixing support for fixing the holder camera on the hydraulic support, a switch for signal transmission of the holder camera, and a stabilized power supply for power supply of the switch and the holder camera; the bottom end of the fixing support is fixedly connected with the hydraulic support, the top end of the fixing support is fixedly connected with the holder camera, the holder cameras on the adjacent two hydraulic supports share one switch and one stabilized power supply, and the two holder cameras are respectively connected with the shared switch and stabilized power supply in a line connection mode; the shared switch and stabilized power supply are fixedly connected on the fixing support on which any holder camera is installed.

2. The coal face pan-tilt camera monitoring system according to claim 1, characterized in that: The fixing support has a three-layer structure, the holder camera is fixedly connected on the third layer structure at the top end of the fixing support, the switch is fixedly connected on the second layer structure in the middle of the fixing support, and the stabilized power supply is fixedly connected on the first layer structure at the bottom end of the fixing support.

3. The coal face pan-tilt camera monitoring system of claim 2, wherein: The fixing support comprises a first support plate, a second support plate, a first storage plate, a second storage plate, and a third storage plate, the first support plate and the second support plate are vertically arranged in a symmetrical mode, the bottom end of each of the first support plate and the second support plate is outwardly bent to form a mounting portion and is fixedly connected with the base at the bottom end of the hydraulic support through the mounting portion, the first storage plate, the second storage plate, and the third storage plate are sequentially arranged from bottom to top, each of the first storage plate, the second storage plate, and the third storage plate is located between the first support plate and the second support plate and is fixedly connected with the opposite surface of the first support plate and the second support plate at both ends thereof, the top end of the third storage plate is fixedly connected with two symmetrically arranged positioning columns, the holder camera is fixedly connected on the positioning column or the third storage plate, the switch is fixedly connected on the second storage plate, and the stabilized power supply is fixedly connected on the first storage plate.

4. The coal face pan-tilt camera monitoring system of claim 3, wherein: Among the holder cameras on the adjacent two hydraulic supports, one holder camera is fixedly connected on the third storage plate of the installed fixing support, and the other holder camera is fixedly connected on the positioning column of the installed fixing support.

5. The coal face pan-tilt camera monitoring system of claim 4, wherein: The first storage plate and the second storage plate are each provided with a wire winding groove on the front and back sides of one end close to the second support plate, one end of the wire winding groove is provided with a first connecting lug and is connected with a wire blocking rod through a first connecting lug pin shaft, the other end of the wire winding groove is provided with a second connecting lug, the wire blocking rod is provided with a first mounting hole at an end away from the first connecting lug, and the first mounting hole is connected with a second mounting hole provided on the second connecting lug through a bolt.

6. The coal face pan-tilt camera monitoring system of claim 5, wherein: The coal mine working face holder camera monitoring system further comprises an uphole monitoring host and a downhole monitoring host; the uphole monitoring host and the downhole monitoring host are connected with the switch through a downhole ring network and realize signal transmission.

7. The coal face pan-tilt camera monitoring system of claim 6, wherein: The coal mine working face holder camera monitoring system further comprises a splicing server for splicing and combining the pictures taken by each holder camera, the splicing server is connected with the underground ring network through a mine optical cable and signal transmission is realized; the signal input end of the splicing server is connected with the switch network communication through the underground ring network, and the signal output end of the splicing server is connected with the uphole monitoring host and the downhole monitoring host network communication through the underground ring network, so that the spliced video is transmitted to the uphole monitoring host and the downhole monitoring host for viewing.

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