A method and system for monitoring intrusion in dangerous areas of a mine

Abstract

The present invention proposes a method and system for monitoring intrusion into dangerous areas in mines, comprising: detecting the concentration of harmful gases at various locations in the mine, and setting one or more initial dangerous areas according to the detection results; obtaining real-time harmful gas concentration detection results of the initial dangerous areas, and adjusting the corresponding initial dangerous area size according to the real-time detection results to obtain harmful gas areas; setting a preset area range connected to the outer boundary of the harmful gas area as an area of ​​interest, obtaining an image of the area of ​​interest for target recognition, and when the target object is recognized, initiating early warning information; the present invention can realize real-time monitoring and early warning of mine hazards, and effectively reduce the risk of safety accidents.

Description

Technical Field

[0001] The present invention relates to the field of intelligent safety monitoring of mines, and in particular to a method and system for monitoring intrusion into dangerous areas in mines. Background Art

[0002] In the coal mining industry, harmful gases that are detrimental to human health are produced during coal outflow and production processes underground, mainly carbon monoxide, carbon dioxide, hydrogen sulfide, sulfur dioxide and other harmful gases. At the same time, the colorless and odorless physical properties of harmful gases make it difficult for underground workers to guard against them. my country's energy resources are characterized by more coal and less oil, and the main component of energy utilization is still coal. In recent years, coal gas poisoning incidents have occurred frequently in the domestic coal mining industry. Therefore, it is necessary and important to propose a method and system for monitoring the intrusion of coal gas hazardous areas in the coal mining industry production site.

[0003] The current existing technology is characterized by setting up a detection device to detect the concentration of harmful gases in a certain area. If the concentration exceeds the preset safety threshold, an alarm will be issued. This technology can effectively warn underground workers and reduce the probability of gas poisoning incidents. However, the disadvantage of this technology is that the harmful gas concentration detection instrument has an operation response time of about 20 seconds. If the operator enters a gas hazard area that exceeds the safety standard during this response time, it will also cause harm to the human body. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention proposes a method and system for monitoring intrusion into dangerous areas in mines, which mainly solves the problem that the prior art lacks timely and effective monitoring means for dangers in mines.

[0005] In order to achieve the above purpose and other purposes, the technical solution adopted by the present invention is as follows.

[0006] A method for monitoring intrusion into a dangerous area in a mine, comprising:

[0007] Detect the concentration of harmful gases at various locations in the mine and set one or more initial danger zones based on the detection results;

[0008] Obtaining the real-time harmful gas concentration detection result of the initial dangerous area, and adjusting the size of the corresponding initial dangerous area according to the real-time detection result to obtain the harmful gas area;

[0009] A preset area range connected to the outer boundary of the harmful gas area is set as an area of ​​interest, an image of the area of ​​interest is acquired for target recognition, and when the target object is recognized, an early warning message is activated.

[0010] Optionally, the step of setting an initial danger zone includes:

[0011] Acquire one or more sub-areas where the concentration of harmful gas exceeds a preset first threshold value of harmful gas concentration;

[0012] A plurality of harmful gas detection devices are installed around each of the sub-areas, and the corresponding sub-areas between the fixedly installed harmful gas detection devices are used as the initial danger areas.

[0013] Optionally, the harmful gas detection device includes one or more combinations of the following: a carbon monoxide detector, a carbon dioxide detector, a hydrogen sulfide detector, and a biogas detector.

[0014] Optionally, the step of obtaining the harmful gas area includes:

[0015] The concentration of harmful gases in the initial dangerous area is detected in real time. When the concentration of harmful gases exceeds a second threshold, the boundary of the initial dangerous area is expanded outward by a corresponding range according to the magnitude of the concentration exceeding the second threshold to obtain the harmful gas area.

[0016] Optionally, the second threshold is greater than the first threshold.

[0017] Optionally, one or more image acquisition devices are provided to acquire images of the region of interest, and the acquired images are transmitted to a host computer for target recognition.

[0018] Optionally, the image acquisition device includes an industrial camera, a depth camera, or an infrared imager.

[0019] Optionally, a warning module is provided at a position corresponding to the region of interest, and a warning message is sent to a target object entering the region of interest through the warning module; wherein the warning message includes: sound information and indicator light information.

[0020] A mine dangerous area intrusion monitoring system, comprising:

[0021] An initial detection setting module is used to detect the concentration of harmful gases at various locations in the mine and set one or more initial danger zones based on the detection results;

[0022] A harmful gas area adjustment module is used to obtain the real-time harmful gas concentration detection result of the initial dangerous area, and adjust the size of the corresponding initial dangerous area according to the real-time detection result to obtain the harmful gas area;

[0023] The intrusion identification and warning module is used to set a preset area range connected to the outer boundary of the harmful gas area as an area of ​​interest, obtain an image of the area of ​​interest for target identification, and activate early warning information when the target object is identified.

[0024] Optionally, the initial detection setting module includes an initial area setting unit, which is used to obtain one or more sub-areas where the harmful gas concentration exceeds a preset first threshold value of the harmful gas concentration; multiple harmful gas detection devices are installed around each of the sub-areas, and the corresponding sub-areas between each fixedly installed harmful gas detection device are used as the initial danger zone.

[0025] As described above, the method and system for monitoring intrusion into dangerous areas in a mine according to the present invention have the following beneficial effects.

[0026] The system can detect harmful gases in real time in designated areas and monitor the locations of target objects and dangerous areas, so as to issue early warnings for dangers in mines and avoid safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a flowchart of a method for monitoring intrusion into a dangerous area in a mine according to an embodiment of the present invention.

[0028] Figure 2 It is a module diagram of an intrusion monitoring system for dangerous areas in a mine in one embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0031] See also Figure 1 The present invention provides a method for monitoring intrusion in dangerous areas in a mine, comprising the following steps:

[0032] In step S01, the concentration of harmful gases at various locations in the mine is detected, and one or more initial danger zones are set according to the detection results.

[0033] Harmful gases in mines usually include carbon monoxide, hydrogen sulfide, carbon dioxide, nitrogen dioxide, biogas, etc. The concentration of harmful gases produced in the mine can be detected in advance by the corresponding harmful gas detection device, and one or more sub-areas where the concentration of harmful gases exceeds the set first threshold value can be obtained. The setting of the first threshold value can be adjusted according to the specific application scenario, and there is no restriction here. Specifically, taking carbon monoxide detection as an example, the site where carbon monoxide is produced in underground operations or the site where the carbon monoxide concentration is prone to exceed the standard is selected as the implementation site, and on-site inspections are carried out through handheld detection equipment or other detection equipment to determine whether the carbon monoxide concentration at the corresponding site exceeds the first threshold value. If it exceeds, the site area where the excess is detected is used as a sub-area of ​​carbon monoxide. Similarly, sub-areas corresponding to hydrogen sulfide, biogas, etc. can be detected.

[0034] Furthermore, multiple harmful gas detection devices are installed around the detected sub-areas, and the harmful gas installation positions can be set along the sub-area boundaries. The wrapped area formed between the harmful gas detection devices in each sub-area serves as the initial danger zone of the corresponding sub-area. Optionally, the installation position of the harmful gas detection device can be adjusted according to the actual detected concentration value, so that the initial danger zone is larger or smaller than the sub-area to adapt to different on-site environmental requirements. For example, a harmful gas concentration grading threshold can be further set, and the installation position of the corresponding harmful gas detection device can be set according to different graded concentration ranges. Specifically, the hazard of the target object (such as the human body) can be graded according to the concentration of different harmful gases.

[0035] In one embodiment, the harmful gas detection device corresponding to the initial danger zone can be the same detection device or a combination of multiple detection devices. For example, if only the carbon monoxide concentration exceeds the standard in a certain initial danger zone, and no other harmful gases are continuously produced, only a carbon monoxide detector can be installed for targeted detection. When the concentrations of two or more harmful gases exceed the standard at the same time in a certain initial danger zone, or although a certain harmful gas does not exceed the standard, but is continuously produced and there is a possibility of exceeding the standard, the corresponding harmful gas detection device can be set for combined detection to effectively avoid possible risks. Among them, the harmful gas detection device may include a carbon monoxide detector, a carbon dioxide detector, a hydrogen sulfide detector, a biogas detector, a sulfur dioxide detector, and the like.

[0036] In step S02, the real-time detection result of the harmful gas concentration in the initial dangerous area is obtained, and the size of the corresponding initial dangerous area is adjusted according to the real-time detection result to obtain the harmful gas area.

[0037] After the setting of the initial hazardous area is completed, the concentration of harmful gases in the corresponding area can be further collected in real time through the harmful gas detection device of each initial hazardous area. Each harmful gas detection device is connected to the host computer by wired or wireless means, and the real-time detection result is fed back to the host computer. In one embodiment, a second threshold value can be set, and when the concentration of harmful gases detected in real time exceeds the second threshold value, the range size of the initial hazardous area is adjusted. Among them, the second threshold value is greater than the first threshold value. Further, the size of the adjustment range of the initial hazardous area can be set according to the magnitude of the harmful gas exceeding the second threshold value. Exemplarily, the geometric center of the initial hazardous area can be used as the starting point, and the radius of the circumscribed circle of the boundary of the initial hazardous area can be used as the initial radius. Each time the adjustment is made, a radius increment is added to the initial radius according to the difference between the real-time detection concentration of harmful gases and the second threshold value, thereby obtaining the harmful gas area. The radius increment can be preset based on experience and corrected by field measured data to ensure the accuracy of the adjustment. In order to ensure the safety of the system, when the real-time detection result is less than the second threshold value, the range of the initial hazardous area is not adjusted, and the initial hazardous area is directly used as the harmful gas area for subsequent safety monitoring.

[0038] In step S03, a preset area outside the harmful gas area is set as an area of ​​interest, an image of the area of ​​interest is acquired for target recognition, and when a target object is recognized, an early warning message is activated.

[0039] In one embodiment, the boundary position of the harmful gas area obtained in step S02 can be used as a reference position, and a certain range away from the harmful gas area can be defined as the area of ​​interest. The specific size of the area of ​​interest can be set according to the properties of different harmful gases. For example, if carbon monoxide and hydrogen sulfide are easy to poison people, the area of ​​interest should be as large as possible and away from the harmful gas area; carbon dioxide and methane are easy to suffocate people, and when they do not reach a certain concentration, they are less harmful to the human body than toxic gases, so the area of ​​interest can be set slightly smaller. Optionally, the area of ​​interest can also be set according to the same standard to facilitate on-site implementation.

[0040] In one embodiment, image acquisition devices may be installed at multiple locations near the region of interest. The image acquisition device is connected to a host computer and feeds the acquired image back to the host computer for target recognition. Ensure that the image acquisition device is installed at a position that can clearly acquire image information of the region of interest. Furthermore, when the size of the harmful gas region changes, the position of the region of interest is also adjusted synchronously with the range of the harmful gas region. The adjustment amplitude can be set to the same amplitude. Furthermore, multiple image acquisition devices can be set along the adjustment direction of the region of interest. When one of the image acquisition devices cannot acquire an image of the region of interest, image acquisition devices at other locations can be started to continue acquiring images, effectively ensuring personnel safety. Among them, the image acquisition device may include an industrial camera, a depth camera, an infrared imager, and the like. In locations where light brightness is poor, the use of imaging devices such as infrared imaging that have lower light requirements can effectively ensure the accuracy of detection.

[0041] In one embodiment, the host computer can integrate the existing recognition module to perform target detection on the collected images. For example, the existing intelligent learning network architecture such as Resnet network architecture, SSD algorithm, YOLO algorithm, etc. can be used for model pre-training, and images of corresponding mine scenes can be collected in advance as training samples. The specific training process will not be repeated here. After the model training is completed, the model is integrated into the storage module of the host computer. When using it, the corresponding model can be called to obtain the target object detection result. The target object here can be a mine operator. In order to prevent mine operators from mistakenly entering the harmful gas area. When the mine operator enters the area of ​​interest, human body detection is performed, and if it is determined that there is someone, the early warning information is activated.

[0042] In one embodiment, an alarm can be installed at a location corresponding to the area of ​​interest (such as an entrance, etc.), and the target object can be prompted to stay away through flashing indicator lights, voice prompts, buzzers, etc. Optionally, the host computer also records the warning situation and sends the situation to the corresponding management personnel so that timely response measures can be taken.

[0043] See also Figure 2 In this embodiment, a system for monitoring intrusion in dangerous areas in a mine is also provided, which is used to execute the method for monitoring intrusion in dangerous areas in a mine described in the above method embodiment. Since the technical principle of the system embodiment is similar to that of the above method embodiment, the same technical details will not be repeated.

[0044] In one embodiment, a dangerous area intrusion monitoring system in a mine includes: an initial detection setting module 10, a harmful gas area adjustment module 11 and an intrusion identification and warning module 12, the initial detection setting module 10 is used to assist in executing step S01 introduced in the aforementioned method embodiment; the harmful gas area adjustment module 11 is used to assist in executing step S02 introduced in the aforementioned method embodiment; the intrusion identification and warning module 12 is used to assist in executing step S03 introduced in the aforementioned method embodiment.

[0045] In one embodiment, the initial detection setting module includes an initial area setting unit, which is used to obtain one or more sub-areas where the harmful gas concentration exceeds a preset first threshold value of the harmful gas concentration; multiple harmful gas detection devices are installed around each of the sub-areas, and the corresponding sub-areas between each fixedly installed harmful gas detection device are used as the initial danger zone.

[0046] In summary, the present invention provides a method and system for monitoring intrusion in dangerous areas in a mine. A harmful gas concentration detector is installed at an appropriate location at a site where harmful gas is generated during underground operations or where the concentration of harmful gas is easily exceeded. The gas hazardous area is determined and adjusted according to the detection result and installation location of the detector. At the same time, an industrial camera is fixedly installed on site, and the imaging area of ​​the gas hazardous area in the camera is set as an area of ​​interest. Human body detection is performed in the area of ​​interest. If a human body is detected in the above-mentioned area of ​​interest, it is considered that an operator has invaded the gas hazardous area, and then the alarm is controlled to sound an alarm, which is conducive to the implementation of online intrusion monitoring of underground gas hazardous areas. When an operator enters the area, an alarm is quickly sounded to reduce the occurrence of gas poisoning incidents. The method is simple and easy to implement, with a short response time and greater practicality and applicability. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for monitoring intrusion into dangerous areas in a mine, characterized in that: include: Detecting the concentration of harmful gases at various locations in the mine, and setting one or more initial danger zones according to the detection results, wherein the step of setting the initial danger zones comprises: obtaining one or more sub-zones where the concentration of harmful gases exceeds a preset first threshold value of the concentration of harmful gases; installing a plurality of harmful gas detection devices around each of the sub-zones, and using the corresponding sub-zones between the fixedly installed harmful gas detection devices as the initial danger zones; Obtaining the real-time harmful gas concentration detection result of the initial dangerous area, and adjusting the size of the corresponding initial dangerous area according to the real-time harmful gas concentration detection result to obtain the harmful gas area; A preset area range connected to the outer boundary of the harmful gas area is set as an area of ​​interest, an image of the area of ​​interest is acquired for target recognition, and when a target object is recognized, an early warning message is sent to the target object, wherein the preset area range is outside the harmful gas area.

2. The method for monitoring intrusion into dangerous areas in a mine according to claim 1, characterized in that: The harmful gas detection device includes one or more combinations of the following: a carbon monoxide detector, a carbon dioxide detector, a hydrogen sulfide detector, and a biogas detector.

3. The method for monitoring intrusion into dangerous areas in a mine according to claim 1, characterized in that: The steps of obtaining the harmful gas area include: The concentration of harmful gases in the initial dangerous area is detected in real time. When the concentration of harmful gases exceeds a second threshold, the boundary of the initial dangerous area is expanded outward by a corresponding range according to the magnitude of the concentration exceeding the second threshold to obtain the harmful gas area.

4. The method for monitoring intrusion into dangerous areas in a mine according to claim 3, characterized in that: The second threshold is greater than the first threshold.

5. The method for monitoring intrusion into dangerous areas in a mine according to claim 1, characterized in that: One or more image acquisition devices are set to acquire images of the region of interest, and the acquired images are transmitted to a host computer for target recognition.

6. The method for monitoring intrusion into dangerous areas in a mine according to claim 5, characterized in that: The image acquisition device includes an industrial camera, a depth camera, and an infrared imager.

7. The method for monitoring intrusion into dangerous areas in a mine according to claim 1, characterized in that: A warning module is arranged at a position corresponding to the region of interest, and the warning module sends the warning information to the target object entering the region of interest; wherein the warning information includes: sound information and indicator light information.

8. A mine dangerous area intrusion monitoring system, characterized in that: include: An initial detection setting module is used to detect the concentration of harmful gases at various locations in the mine and set one or more initial danger zones based on the detection results; The initial detection setting module includes an initial area setting unit, which is used to obtain one or more sub-areas where the concentration of harmful gas exceeds a preset first threshold value of harmful gas concentration; multiple harmful gas detection devices are installed around each of the sub-areas, and the corresponding sub-areas between the fixedly installed harmful gas detection devices are used as the initial danger area; A harmful gas area adjustment module is used to obtain the real-time harmful gas concentration detection result of the initial dangerous area, and adjust the size of the corresponding initial dangerous area according to the real-time harmful gas concentration detection result to obtain the harmful gas area; An intrusion identification and warning module is used to set a preset area range connected to the outer boundary of the harmful gas area as an area of ​​interest, obtain an image of the area of ​​interest for target identification, and when a target object is identified, send an early warning message to the target object, wherein the preset area range is outside the harmful gas area.

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