A 5G-based air film coal yard top surface icing monitoring system

Abstract

The application provides a 5G-based air film coal yard top surface icing monitoring system, comprising: a control system and a detection terminal; the detection terminal is used for detecting the air film coal yard top surface, obtaining a complete image of the air film coal yard top surface, and detecting any preset detection block in the air film coal yard top surface to obtain a thermal imaging image of the preset detection block, wherein the thermal imaging image of the preset detection block has a position mark of the preset detection block; the control system is used for dividing the air film coal yard top surface into a plurality of preset detection blocks according to the complete image, and judging whether any target preset detection block in the plurality of preset detection blocks has icing. The system can realize accurate monitoring of the icing condition of the air film coal yard top surface, thereby realizing accurate deicing.

Description

Technical Field

[0001] This application relates to the field of 5G technology, and specifically to a 5G-based air-supported coal yard roof icing monitoring system. Background Technology

[0002] With the increasing emphasis on ecological protection in recent years, fully enclosed coal yards have been gradually promoted, and thermal power plants have also carried out renovation projects for fully enclosed coal yards. Among various types of fully enclosed coal yards, air-supported membrane coal yards are widely used due to their advantages of short construction period, low cost, and structural safety.

[0003] During operation, air-supported membrane coal yards are prone to icing on their roof surfaces. This icing increases external pressure on the coal yard, thereby increasing the power consumption of the internal pressure maintenance system. If the icing is severe, excessive pressure can even lead to deformation of the membrane structure. Current technologies lack methods for monitoring icing on the roof of air-supported membrane coal yards. They only use pressure sensors installed inside the coal yard to detect the internal pressure and determine if there is pressure outside the membrane, such as CN112147938A. This cannot monitor the location of the icing area. When the construction area of ​​an air-supported membrane coal yard is too large, the pressure caused by roof icing will consume too much power in the internal pressure maintenance system and make the membrane structure more prone to deformation. Summary of the Invention

[0004] To address this technical challenge, this application provides a 5G-based monitoring system for icing on the roof of an air-supported coal yard. This system enables precise monitoring of icing on the roof of the air-supported coal yard, thereby facilitating accurate de-icing, reducing the consumption of the air pressure maintenance system within the air-supported coal yard, and preventing deformation of the air-supported structure due to excessive icing.

[0005] To achieve the objectives of this application, the following technical solutions are employed:

[0006] This application provides a 5G-based icing monitoring system for the roof surface of an air-supported coal yard, comprising: a control system and a detection terminal; the detection terminal is used to detect the roof surface of the air-supported coal yard to obtain a complete image of the roof surface, and to detect any preset detection block in the roof surface of the air-supported coal yard to obtain a thermal image of the preset detection block, the thermal image of the preset detection block having a location marker of the preset detection block; the control system is used to divide the roof surface of the air-supported coal yard into multiple preset detection blocks according to the complete image, and to determine whether any target preset detection block among the multiple preset detection blocks has icing, wherein the determination includes: using the temperature of the chain area in the thermal image of the target preset detection block as a reference temperature, if the proportion of the number of pixels in the thermal image of the target preset detection block with a temperature less than or equal to the reference temperature to the total number of pixels in the target preset detection block is greater than a first icing threshold, then it is determined that the target preset detection block has icing.

[0007] Optionally, the method for dividing the complete image of the top surface of the air-supported coal yard into multiple preset detection blocks is as follows: in the complete image of the top surface of the air-supported coal yard, the area of ​​the air-supported coal yard top surface divided by the chain is used as the base area, and then one or more adjacent base areas are combined to form the preset detection blocks.

[0008] Optionally, the method for dividing the complete image of the top surface of the air-supported coal yard into multiple preset detection blocks can also be: dividing the preset detection blocks according to the maximum effective detection range of the detection terminal.

[0009] In one possible implementation, the control system is further configured to generate a preset detection route and preset detection points after dividing the preset detection blocks; the detection terminal is further configured to move according to the preset detection route, detect the preset detection blocks at each preset detection point, and obtain a thermal image of the preset detection blocks.

[0010] Optionally, the preset detection route is the movement route of the detection terminal to collect all preset detection blocks, and the preset detection point is the regional center of each preset detection area.

[0011] In one possible implementation, the monitoring system further includes: a de-icing terminal; the control system is further configured to control the de-icing terminal to perform de-icing operations on the preset detection area where icing exists, based on the location marker of the preset detection area where icing exists.

[0012] In one possible implementation, the monitoring system further includes a display terminal for displaying images of the plurality of preset detection blocks and marking the preset detection blocks where icing occurs.

[0013] In one possible implementation, the detection terminal includes a drone equipped with a thermal imager.

[0014] Optionally, the drone equipped with the thermal imager is an industrial-grade infrared thermal imaging drone.

[0015] In one possible implementation, the de-icing terminal includes a drone equipped with a de-icing agent spraying device.

[0016] In one possible implementation, the drone equipped with a de-icing agent spraying device is used to spray de-icing agent onto the preset detection area where icing occurs.

[0017] Optionally, the de-icing agent is an environmentally friendly snow-melting agent, with a total spraying rate of 50-70 g / m³. 2 Single spraying rate: 10-14 g / m² 2 Spray five times at intervals of five minutes.

[0018] Optionally, the method of dividing the complete image of the top surface of the air-supported coal yard into multiple preset detection blocks can also be: dividing the preset detection blocks by the maximum effective area of ​​the de-icing agent sprayed by the drone equipped with the de-icing agent spraying device.

[0019] In one possible implementation, the detection terminal further includes: a drone equipped with a three-dimensional lidar, used to acquire a three-dimensional image of the top surface of the gas-supported coal yard as a reference three-dimensional image, and used to acquire a three-dimensional image of the preset detection block where icing occurs; the control system is further used to control the drone equipped with the three-dimensional lidar to acquire the three-dimensional image of the preset detection block where icing occurs based on the location marker of the preset detection block where icing occurs, and is further used to acquire the area and thickness of the ice layer in the preset detection block where icing occurs based on the three-dimensional image of the preset detection block where icing occurs.

[0020] Optionally, the three-dimensional lidar is an ARS-1200 airborne lidar.

[0021] In one possible implementation, the detection terminal is further configured to acquire a thermal image of the preset detection block when it is not icy; the control system is further configured to use the thermal image of the preset detection block when it is not icy as a reference image, compare the thermal image of the target preset detection block with the reference image to obtain an image similarity, and if the image similarity is less than a second icing threshold, then the target preset detection block is determined to be a preset detection block with icing.

[0022] In one possible implementation, the control system is further configured to determine the amount of de-icing agent to be sprayed by the UAV equipped with the de-icing agent spraying device onto the preset detection area where icing occurs, based on the area and thickness of the ice layer in the preset detection area where icing occurs.

[0023] In one possible implementation, the first icing threshold is 55-65%, and the second icing threshold is 45-60%.

[0024] Optionally, the first icing threshold is 60%, and the second icing threshold is 55%.

[0025] The technical effects of the technical solution provided in this application are as follows:

[0026] The monitoring system described in this application can accurately detect the icing area on the roof of the air-supported coal yard based on the high speed, low latency and large connection characteristics of 5G network, thereby achieving accurate de-icing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the network architecture of the 5G-based air-supported coal yard roof icing monitoring system of this application;

[0028] Figure 2 This is a schematic diagram of the preset detection route and preset detection points of the detection terminal of this application above the top surface of the air-supported coal yard;

[0029] Figure 3 This is a schematic diagram of the pre-set detection area on the top surface of the air-supported coal yard in this application;

[0030] Figure 4 This is a schematic diagram showing the icing situation on the pre-set detection block on the top surface of the air-supported coal yard of this application;

[0031] Figure 5 This is a flowchart illustrating the 5G-based method for monitoring icing on the roof of an air-supported coal yard, as described in this application.

[0032] Attached diagram labels: 1-Air-supported coal yard; 2-Chain; 3-Air-supported membrane; 4-Preset detection point; 5-Preset detection route. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0036] Example 1

[0037] Figure 1-5 A schematic diagram of a 5G-based air-supported coal yard roof icing monitoring system provided in this application embodiment is shown below. Figure 1-5 As shown, a 5G-based air-supported coal yard roof icing monitoring system includes: a control system and a detection terminal.

[0038] In this embodiment, the detection terminal is used to detect the top surface of the air-supported coal yard to obtain a complete image of the top surface, and to detect any preset detection block in the top surface of the air-supported coal yard to obtain a thermal image of the preset detection block, wherein the thermal image of the preset detection block has a location marker of the preset detection block; the control system is used to divide the top surface of the air-supported coal yard into multiple preset detection blocks according to the complete image, and to determine whether any target preset detection block among the multiple preset detection blocks has icing, wherein the determination includes: using the temperature of the chain area in the thermal image of the target preset detection block as a reference temperature, if the proportion of the number of pixels in the thermal image of the target preset detection block that are less than or equal to the reference temperature to the total number of pixels in the target preset detection block is greater than a first icing threshold, then it is determined that the target preset detection block has icing. This embodiment can accurately monitor the icing of the top surface of the air-supported coal yard.

[0039] Optionally, the complete image of the top surface of the air-supported coal yard can be a color image taken by a high-definition camera, a black-and-white image taken by a high-definition camera, or a thermal image taken by a thermal imaging camera.

[0040] Optionally, the method for obtaining the temperature of the chain area in the target preset detection block is: manual input by a technician, or the control system identifies temperature image areas with the same temperature that appear as a straight line in the thermal imaging images of the multiple preset detection blocks, and obtains the temperature of the temperature image areas.

[0041] Optionally, the control system controls the detection terminal to perform a detection operation on the top surface of the air-supported coal yard every two days. This implementation method can achieve automatic monitoring.

[0042] In one possible implementation, the method for dividing the complete image of the top surface of the air-supported coal yard into multiple preset detection blocks is as follows: in the complete image of the top surface of the air-supported coal yard, the area of ​​the air-supported coal yard top surface divided by the cable is used as the base area, and then one or more adjacent base areas are combined to form the preset detection blocks. This implementation method can divide the preset detection blocks by using the regular grid-like area divided by the cable when the cable of the air-supported coal yard is set as a grid. This implementation method can facilitate the division and identification of the preset detection blocks.

[0043] Optional, such as Figure 3 As shown, a pre-defined detection block is formed by dividing a regular grid-like area into 9 chains.

[0044] In one possible implementation, the method of dividing the complete image of the top surface of the gas-supported coal yard into multiple preset detection blocks can also be: dividing the preset detection blocks according to the maximum effective detection range of the detection terminal. This implementation method can facilitate the detection terminal to perform detection operations.

[0045] In one possible implementation, the control system is further configured to generate a preset detection route and preset detection points after dividing the preset detection blocks; the detection terminal is further configured to move according to the preset detection route, detect the preset detection blocks at each preset detection point, and obtain a thermal image of the preset detection blocks. This implementation enables the control system to easily identify the collected thermal images to confirm the preset detection areas where icing occurs.

[0046] Optionally, the preset detection route is the movement route of the detection terminal that can collect all preset detection blocks, and the preset detection point is the regional center of each preset detection area. This implementation method can facilitate the detection terminal to perform detection operations and improve the accuracy of the control system's identification.

[0047] In one possible implementation, the monitoring system further includes a de-icing terminal; the control system is further configured to control the de-icing terminal to perform de-icing operations on the preset detection blocks where icing exists, based on the location markers of the preset detection blocks where icing exists. This implementation enables precise de-icing of the preset detection blocks where icing exists.

[0048] In one possible implementation, the monitoring system further includes a display terminal for displaying images of the plurality of preset detection blocks and marking the preset detection blocks where icing occurs. With this implementation, a complete image of the top surface of the gas-supported coal yard with the preset detection blocks marked as having icing can be displayed.

[0049] In one possible implementation, the detection terminal includes a drone equipped with a thermal imager. This implementation facilitates the detection terminal's detection operations without the need for fixed equipment, maintenance, or repair.

[0050] Optionally, the drone equipped with the thermal imager is an industrial-grade infrared thermal imaging drone.

[0051] In one possible implementation, the de-icing terminal includes a drone equipped with a de-icing agent spraying device. This implementation facilitates precise de-icing operations by the de-icing terminal, eliminating the need for fixed equipment, maintenance, and repair.

[0052] In one possible implementation, the drone equipped with a de-icing agent spraying device is used to spray de-icing agent onto the preset detection area where icing occurs.

[0053] Optionally, the de-icing agent is solid. This embodiment allows the de-icing terminal to carry more de-icing agent, thereby improving de-icing efficiency.

[0054] Optionally, the de-icing agent is an environmentally friendly snow-melting agent, with a total spraying rate of 60 g / m³. 2 Single spraying rate: 12g / m² 2 Five sprays are applied at five-minute intervals. This method reduces environmental pollution from de-icing agents and improves de-icing efficiency.

[0055] Optionally, the de-icing terminal can spray de-icing agent over a single preset detection area. When performing de-icing operations, it moves to the preset detection point corresponding to the preset detection block where icing occurs and sprays de-icing agent.

[0056] Optionally, the method of dividing the complete image of the top surface of the air-supported coal yard into multiple preset detection blocks can also be: using the drone equipped with a de-icing agent spraying device to spray the maximum effective area of ​​the de-icing agent to divide the preset detection blocks. This implementation method can improve the de-icing efficiency of the de-icing terminal.

[0057] In one possible implementation, the detection terminal further includes: a drone equipped with a three-dimensional lidar, used to acquire a three-dimensional image of the top surface of the gas-supported coal yard as a reference three-dimensional image, and used to acquire a three-dimensional image of the preset detection block where icing occurs; the control system is further used to control the drone equipped with the three-dimensional lidar to acquire a three-dimensional image of the preset detection block where icing occurs based on the location marker of the preset detection block where icing occurs, and is further used to acquire the area and thickness of the ice layer in the preset detection block where icing occurs based on the three-dimensional image of the preset detection block where icing occurs. This implementation can acquire the area and thickness of the ice layer in the preset detection block where icing occurs, and pre-set the spraying amount of de-icing agent based on the area and thickness of the ice layer.

[0058] Optionally, the three-dimensional lidar is an ARS-1200 airborne lidar.

[0059] Optionally, the area and thickness of the ice layer in the preset detection block where icing occurs can be obtained directly by a three-dimensional lidar, or by comparing the reference three-dimensional image with the three-dimensional image of the preset detection block where icing occurs.

[0060] Optionally, the method for determining the pre-set spray amount of the de-icing agent is as follows: obtain the estimated volume of the ice layer based on the area and thickness of the ice layer, and then determine the pre-set spray amount of the de-icing agent based on the prescribed usage amount of the de-icing agent.

[0061] In one possible implementation, the detection terminal is further configured to acquire a thermal image of the preset detection block when it is not icing; the control system is further configured to use the thermal image of the preset detection block when it is not icing as a reference image, compare the thermal image of the target preset detection block with the reference image to obtain an image similarity, and if the image similarity is less than a second icing threshold, then the target preset detection block is determined to be a preset detection block with icing. This implementation can compare the similarity of the thermal image of the preset detection block composed of chains and air film when it is not icing at the same temperature with the thermal image of the preset detection block composed of chains and air film to be tested, and determine whether the preset detection area to be tested is a preset detection area with icing based on whether the similarity is less than the second icing threshold.

[0062] In one possible implementation, the control system is further configured to determine the amount of de-icing agent to be sprayed by the drone equipped with the de-icing agent spraying device into the preset detection area where icing occurs, based on the area and thickness of the ice layer in the preset detection area where icing occurs. This implementation can improve de-icing efficiency and avoid waste of de-icing agent.

[0063] In one possible implementation, the first icing threshold is 55-65%, and the second icing threshold is 45-60%. This implementation allows for the selection of appropriate first and second icing thresholds based on the actual ambient temperature and the performance of the detection terminal.

[0064] Optionally, the first icing threshold is 60%, and the second icing threshold is 55%.

[0065] Optional, such as Figure 4 As shown, in the thermal imaging images of the preset detection blocks numbered 11 and 12, the number of pixels with a temperature less than or equal to the reference temperature accounts for more than 60% of their respective total pixels. Therefore, the control system determines that the preset detection blocks numbered 11 and 12 are icing up, and finally controls the de-icing terminal to perform de-icing operations on the preset detection blocks numbered 11 and 12.

[0066] The working principle is as follows:

[0067] In cold environments, the temperature of the air-supported membrane coal yard's chain remains consistent with the outside temperature. Since the air-supported membrane has a constant temperature system, its temperature is consistently higher than the outside temperature. When icing or snow accumulation occurs, the temperature of the snow and ice layers will be less than or equal to the chain temperature. Therefore, the process begins by acquiring a thermal image of the target detection area. If the number of pixels in the thermal image with a temperature less than or equal to the chain temperature reaches a preset first icing threshold, the target detection area is determined to be an area with icing. Then, a 3D lidar is used to obtain the area and thickness of the covering material on the top surface of the air-supported membrane within this icing-prone area, thus determining the thickness of the ice and snow accumulation and pre-setting the de-icing agent spraying amount. Finally, by marking the location of the icing-prone detection area and using a 5G network to determine precise location information, the de-icing terminal is controlled to perform precise de-icing operations.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. The present invention is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A 5G-based monitoring system for icing on the roof of an air-supported coal yard, characterized in that, include: Control system and detection terminal; The detection terminal is used to detect the top surface of the air-supported coal yard and obtain a complete image of the top surface of the air-supported coal yard, and to detect any preset detection block in the top surface of the air-supported coal yard and obtain a thermal image of the preset detection block, wherein the thermal image of the preset detection block has a location mark of the preset detection block; The control system is configured to divide the top surface of the air-supported coal yard into multiple preset detection blocks based on the complete image. In the complete image of the top surface of the air-supported coal yard, the area of ​​the air-supported coal yard top surface divided by the chain is used as the base area, and one or more adjacent base areas are combined to form the preset detection blocks. The system is also configured to determine whether any target preset detection block among the multiple preset detection blocks has icing. The determination includes: using the temperature of the chain area in the thermal image of the target preset detection block as the reference temperature, if the proportion of pixels in the thermal image of the target preset detection block with a temperature less than or equal to the reference temperature to the total number of pixels in the target preset detection block is greater than a first icing threshold, then it is determined that the target preset detection block has icing.

2. The monitoring system according to claim 1, characterized in that, The control system is further configured to generate a preset detection route and preset detection points after dividing the preset detection blocks; the detection terminal is further configured to move according to the preset detection route, detect the preset detection blocks at each preset detection point, and obtain a thermal image of the preset detection blocks.

3. The monitoring system according to claim 1 or 2, characterized in that, Also includes: De-icing terminal; The control system is also used to control the de-icing terminal to perform de-icing operations on the preset detection area where icing occurs, based on the location marker of the preset detection area where icing occurs.

4. The monitoring system according to claim 1, characterized in that, Also includes: A display terminal is used to display images of the plurality of preset detection blocks and to mark the preset detection blocks where icing occurs.

5. The monitoring system according to claim 1, characterized in that, The detection terminal includes: a drone equipped with a thermal imager.

6. The monitoring system according to claim 3, characterized in that, The de-icing terminal includes: a drone equipped with a de-icing agent spraying device; the drone equipped with the de-icing agent spraying device is used to spray de-icing agent onto the preset detection area where icing occurs.

7. The monitoring system according to claim 6, characterized in that, The detection terminal further includes: a drone equipped with a three-dimensional lidar, used to acquire a three-dimensional image of the top surface of the air-supported coal yard as a reference three-dimensional image, and used to acquire a three-dimensional image of the preset detection block where icing occurs; the control system is also used to control the drone equipped with the three-dimensional lidar to acquire a three-dimensional image of the preset detection block where icing occurs based on the location marker of the preset detection block where icing occurs, and is also used to acquire the area and thickness of the ice layer in the preset detection block where icing occurs based on the three-dimensional image of the preset detection block where icing occurs.

8. The monitoring system according to claim 1, characterized in that, The detection terminal is also used to acquire a thermal image of the preset detection block when it is not frozen; The control system is further configured to use the thermal image of the preset detection block when it is not iced as a reference image, compare the thermal image of the target preset detection block with the reference image to obtain the image similarity, and if the image similarity is less than the second icing threshold, then determine that the target preset detection block is a preset detection block with icing.

9. The monitoring system according to claim 7, characterized in that, The control system is also used to determine the amount of de-icing agent to be sprayed by the UAV equipped with the de-icing agent spraying device into the preset detection area where icing occurs, based on the area and thickness of the ice layer in the preset detection area where icing occurs.

10. The monitoring system according to claim 8, characterized in that, The first icing threshold is 55-65%, and the second icing threshold is 45-60%.

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