Method and system for monitoring position of gas sensor at return air corner of fully mechanized coal mining face in real time

Abstract

The invention relates to the technical field of coal mine safety management, and discloses a real-time monitoring method and system for the position of a gas sensor at a return air corner of a fully mechanized coal mining face, and the system comprises the gas sensor, a moving mechanism, a hydraulic prop, a monitoring camera, a central control unit, an alarm device and a ground monitoring center, the hydraulic prop is used for supporting the moving mechanism, and the gas sensor, the moving mechanism, the hydraulic prop, the monitoring camera, the central control unit, the alarm device and the ground monitoring center are integrated, so that the position of the gas sensor can be monitored in real time, and it is ensured that the gas sensor is always in the optimal monitoring state; the real-time performance and accuracy of gas monitoring of the return air corner of the fully mechanized coal mining face are improved, the safety early warning and remote monitoring capabilities of the system are enhanced, and powerful technical support is provided for safe production of a coal mine.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine safety management, and in particular to a method and system for real-time monitoring the position of a return air corner gas sensor at a fully mechanized mining face. Background Art

[0002] In coal mine safety management, real-time monitoring of gas concentration is one of the important measures to ensure the safety of miners. The return air corner of the fully mechanized mining face is a high-risk area for gas accumulation, so real-time monitoring of gas concentration in this area is particularly important.

[0003] Traditional gas monitoring methods mainly rely on manual inspections, which is not only inefficient but also poses great safety risks. With the development of technology, although gas monitoring systems based on wireless sensor networks have emerged, these systems still have problems in practical applications, such as fixed sensor positions, limited monitoring ranges, and poor real-time performance.

[0004] To this end, we propose a real-time monitoring method and system for the position of return air corner gas sensors in fully mechanized mining working faces. Summary of the invention

[0005] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a method and system for real-time monitoring the position of return air corner gas sensors in a fully mechanized mining face.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme, a real-time monitoring system for the position of a gas sensor at the return air corner of a comprehensive mining working face, comprising a gas sensor, a mobile mechanism, a hydraulic support, a monitoring camera, a central control unit, an alarm device and a ground monitoring center, the gas sensor being used to detect the gas concentration at the return air corner of the comprehensive mining working face in real time, the mobile mechanism being connected to the gas sensor, and the hydraulic support being used to support the mobile mechanism.

[0007] Preferably, the monitoring camera is used to capture the working status and surrounding environment of the gas sensor in real time.

[0008] Preferably, the central control unit is used to receive signals from gas sensors and surveillance cameras and perform data processing.

[0009] Preferably, the alarm device is used to sound an alarm when the gas concentration exceeds a preset threshold.

[0010] Preferably, the moving mechanism includes a track and a driving device.

[0011] Preferably, the track is arranged at the top of the return air corner of the comprehensive mining working face.

[0012] Preferably, the driving device is used to drive the gas sensor to move along the track to achieve real-time adjustment of the position of the gas sensor.

[0013] Preferably, the central control unit includes a data processing module, a communication module and a display module.

[0014] Preferably, the data processing module is used to analyze and process signals from gas sensors and surveillance cameras.

[0015] Preferably, the communication module is used for data transmission with the gas sensor and the surveillance camera.

[0016] Preferably, the display module is used to display information on gas concentration, sensor location and working surface environment image in real time.

[0017] Preferably, the alarm device includes an audible and visual alarm and a wireless alarm module.

[0018] Preferably, the sound and light alarm is used to issue sound and light alarms on site at the comprehensive mining working face.

[0019] Preferably, the wireless alarm module is used to send an alarm signal to a ground monitoring center so that timely measures can be taken.

[0020] Preferably, the ground monitoring center includes a server, a workstation and remote communication equipment.

[0021] Preferably, the server is used to store and process data information transmitted from the central control unit and the alarm device.

[0022] Preferably, the workstation is used by operators to monitor and analyze information on gas concentration, sensor location and working surface environment images in real time.

[0023] Preferably, the remote communication equipment is used to realize remote communication between the ground monitoring center and the comprehensive mining working face.

[0024] A method for real-time monitoring the position of a gas sensor at a return air corner of a fully mechanized mining face comprises the above-mentioned real-time monitoring system for the position of a gas sensor at a return air corner of a fully mechanized mining face, and specifically comprises the following steps:

[0025] Step 1: Hang the gas sensor: Hang the gas sensor vertically on the mobile mechanism. The distance between the gas sensor and the top plate should not be greater than 300mm, and the distance between the gas sensor and the side wall of the tunnel should not be less than 200mm, and there should be no foreign objects wrapped around it.

[0026] Step 2: Model matching: The identification of gas sensors is divided into two steps: target detection and image classification. Target detection can identify gas sensors in the surveillance area of ​​the surveillance camera according to the probability and determine their positions in the picture. The algorithm involved is F-RCNN. Image classification can further classify the detected objects to determine whether the hardware device at the identification point is a gas sensor. The algorithm involved is Resnet101. In addition, in the case of insufficient light, traditional image filtering methods will be used to highlight the high-frequency information inside the image, so as to make the object boundary more prominent and improve the detection accuracy of the sensor.

[0027] Step 3: Relative size ratio calculation: By calculating the ratio of the size of the gas sensor to the actual size, the relative distance between the gas sensor and the upper partition and the upper wall can be obtained. By calculating the ratio of the image size to the anchor image in normal conditions, it can be determined whether the distance between the gas sensor and the surveillance camera has changed significantly.

[0028] Step 4: Anchor reference: When it is determined that the scene is a hydraulic support device, the hydraulic support in the picture needs to be identified. The identification process is also divided into two steps: target detection of the hydraulic support and image classification. Target detection can identify the hydraulic support in the monitoring area of ​​the surveillance camera according to the probability size and determine its position in the picture. The algorithm involved is F-RCNN. After the hydraulic support is detected, its direction needs to be determined. At the same time, the detected object can be further classified through image classification to determine whether the hardware device at the identification location is a hydraulic support. The algorithm involved is Resnet101.

[0029] Step 5: Logical implementation: After identifying the gas sensor and hydraulic support, it is necessary to determine whether the gas sensor is in the correct position. The real position information of the gas sensor is determined by proportional calculation and analysis based on the image angle, coordinate information of the gas sensor, size of the detection frame and the normal anchor image. It is considered legal within the range that does not exceed the threshold. When the gas sensor disappears from the image or the abnormal installation time exceeds the allowed time, an alarm message is immediately issued through the alarm device.

[0030] The present invention provides a method and system for real-time monitoring of the position of a gas sensor at a return air corner of a fully mechanized mining face. It has the following beneficial effects:

[0031] 1. This method and system for real-time monitoring of the position of the return air corner gas sensor of the fully mechanized mining working face integrates the gas sensor, mobile mechanism, hydraulic support, monitoring camera, central control unit, alarm device and ground monitoring center, and can monitor the position of the gas sensor in real time to ensure that it is always in the best monitoring state. It not only improves the real-time and accuracy of the return air corner gas monitoring of the fully mechanized mining working face, but also enhances the system's safety warning and remote monitoring capabilities, providing strong technical support for safe production in coal mines.

[0032] 2. This method and system for real-time monitoring of the position of the return air corner gas sensor in a comprehensive mining face can flexibly adjust the position of the gas sensor by setting up a mobile mechanism, expand the monitoring range, avoid the limitations of fixed position sensors, and improve the accuracy and reliability of monitoring.

[0033] 3. This method and system for real-time monitoring of the position of the return air corner gas sensor in the comprehensive mining working face is equipped with a central control unit. The integrated processing and display functions of the central control unit enable on-site operators to timely grasp the gas concentration and working face environmental conditions and take corresponding measures.

[0034] 4. This method and system for real-time monitoring of the position of gas sensors in the return air corners of a comprehensive mining face, by setting up an alarm device and a dual alarm mechanism of the alarm device, ensures that an alarm can be issued in time when the gas concentration exceeds the standard to avoid accidents. The on-site and ground monitoring centers can receive alarms at the same time, thereby improving the timeliness and reliability of safety warnings.

[0035] 5. This method and system for real-time monitoring of the position of return air corner gas sensors in a comprehensive mining face realizes remote communication between the ground monitoring center and the comprehensive mining face by setting up a ground monitoring center, so that ground monitoring personnel can monitor and analyze information such as gas concentration, sensor position and working face environment image in real time, further improving the comprehensive monitoring capability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a system module diagram of the present invention;

[0037] Figure 2 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0039] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "inner", "outer", "side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0044] Embodiment 1: A real-time monitoring system for the position of a gas sensor in a fully mechanized coal mining face return air corner, such as Figure 1As shown, it includes a gas sensor, a moving mechanism, a hydraulic support, a monitoring camera, a central control unit, an alarm device and a ground monitoring center. The gas sensor is used to detect the gas concentration of the return air corner of the fully mechanized mining face in real time. The moving mechanism is connected to the gas sensor, the hydraulic support is used to support the moving mechanism, the monitoring camera is used to shoot the working status and surrounding environment of the gas sensor in real time, the central control unit is used to receive the signals of the gas sensor and the monitoring camera and perform data processing, the alarm device is used to sound an alarm when the gas concentration exceeds a preset threshold value, the moving mechanism includes a track and a driving device, the track is set at the top of the return air corner of the fully mechanized mining face, the driving device is used to drive the gas sensor to move along the track to achieve real-time adjustment of the position of the gas sensor, and by integrating the gas sensor, the moving mechanism, the hydraulic support, the monitoring camera, the central control unit, the alarm device and the ground monitoring center, the position of the gas sensor can be monitored in real time to ensure that it is always in the best monitoring state, which not only improves the real-time and accuracy of the gas monitoring of the return air corner of the fully mechanized mining face, but also enhances the system's safety warning and remote monitoring capabilities, providing strong technical support for safe production in coal mines.

[0045] Embodiment 2: Based on Embodiment 1, Figure 1 As shown, the central control unit includes a data processing module, a communication module and a display module. The data processing module is used to analyze and process the signals of the gas sensor and the monitoring camera. The communication module is used to transmit data with the gas sensor and the monitoring camera. The display module is used to display the information of the gas concentration, sensor position and working surface environment image in real time. By setting up a mobile mechanism, the position of the gas sensor can be flexibly adjusted to expand the monitoring range, avoid the limitations of fixed position sensors, and improve the accuracy and reliability of monitoring.

[0046] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 1 As shown, the alarm device includes an audible and visual alarm and a wireless alarm module. The audible and visual alarm is used to send audible and visual alarms at the comprehensive mining working face. The wireless alarm module is used to send alarm signals to the ground monitoring center so that timely measures can be taken. By setting up a central control unit and the integrated processing and display functions of the central control unit, on-site operators can timely grasp the gas concentration and working face environmental conditions and take corresponding measures.

[0047] Embodiment 4: Based on Embodiment 1, Embodiment 2 and Embodiment 3, Figure 1As shown, the ground monitoring center includes a server, a workstation and a remote communication device. The server is used to store and process data information transmitted from the central control unit and the alarm device. The workstation is used for operators to monitor and analyze information such as gas concentration, sensor position and working face environment image in real time. The remote communication equipment is used to realize remote communication between the ground monitoring center and the comprehensive mining working face. By setting up an alarm device and a dual alarm mechanism of the alarm device, it is ensured that an alarm can be issued in time when the gas concentration exceeds the standard to avoid accidents. The on-site and ground monitoring center can receive alarms at the same time, which improves the timeliness and reliability of safety warnings.

[0048] Embodiment 5: Based on Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4, Figure 2As shown, a method for real-time monitoring the position of a gas sensor in the return air corner of a fully mechanized mining face includes the above-mentioned real-time monitoring system for the position of a gas sensor in the return air corner of a fully mechanized mining face, and specifically includes the following steps: Step 1: Hanging the gas sensor: The gas sensor is vertically suspended on a mobile mechanism, and the distance between the gas sensor and the roof shall not be greater than 300 mm, and the distance between the gas sensor and the side wall of the tunnel shall not be less than 200 mm, and there shall be no foreign objects wrapped around it; Step 2: Model matching: The recognition of the gas sensor is divided into two steps: target detection and image classification. Target detection can identify the gas sensors in the monitoring area of ​​the surveillance camera according to the probability size, and determine their positions in the picture. The algorithm involved is F-RCNN, FIG. Image classification can further classify the detected objects to determine whether the hardware device at the identification point is a gas sensor. The algorithm involved is Resnet101. In addition, in the case of insufficient light, traditional image means will be used for filtering to highlight the high-frequency information inside the image, thereby making the object boundary more prominent and improving the detection accuracy of the sensor; Step 3: Relative size ratio calculation: By calculating the ratio of the size of the gas sensor to the actual size, the relative distance of the gas sensor from the upper partition and the upper side can be obtained. By calculating the ratio of the image size to the anchor image in normal conditions, it is determined whether the distance between the gas sensor and the surveillance camera has changed significantly; Step 4: Anchor reference: When it is determined that the scene is a hydraulic support device, the hydraulic support in the picture needs to be identified. The identification process is also divided into two steps: target detection of the hydraulic support and image classification. Target detection can identify the hydraulic support in the monitoring area of ​​the surveillance camera according to the probability size and determine its position in the picture. The algorithm involved is F-RCNN. After the hydraulic support is detected, its direction needs to be determined. At the same time, the detected object can be further classified through image classification to determine whether the hardware device at the identification point is a hydraulic support. The algorithm involved is Resnet101; Step 5: Logical implementation: After identifying the gas sensor and hydraulic After the support is installed, it is necessary to judge whether the gas sensor is in the correct position. The real position information of the gas sensor is judged by proportional calculation and analysis through the picture angle, coordinate information of the gas sensor, detection frame size and normal anchor image. It is considered legal within the range that does not exceed the threshold. When the gas sensor disappears in the picture or the abnormal installation time exceeds the allowed time, an alarm message is immediately issued through the alarm device. By setting up a ground monitoring center, remote communication between the ground monitoring center and the comprehensive mining working face is realized, so that ground monitoring personnel can monitor and analyze the information of gas concentration, sensor position and working face environment image in real time, further improving the comprehensive monitoring capability of the system.

[0049] The working principle of the present invention is as follows: first, the gas sensor is responsible for real-time monitoring of the gas concentration and transmitting the signal to the central control unit. The central control unit analyzes and processes the signal through the data processing module to determine whether the gas concentration exceeds the preset threshold. If it exceeds the threshold, the communication module sends an alarm signal to the alarm device and the ground monitoring center. The mobile mechanism is responsible for adjusting the position of the gas sensor to ensure that it is always in the best monitoring state. The driving device moves the gas sensor along the track to expand the monitoring range and avoid the limitations of fixed position sensors. The hydraulic support serves as the supporting equipment of the mobile mechanism to ensure its stability and reliability. The monitoring camera is responsible for real-time monitoring of the environmental image of the comprehensive mining working face and transmitting the image information to the central control unit. The display module displays the information of gas concentration, sensor position and working face environmental image to the on-site operators and the ground monitoring center in real time so that timely measures can be taken. The alarm device includes an audible and visual alarm and a wireless alarm module. The audible and visual alarm sends out an audible and visual alarm at the comprehensive mining working face. The wireless alarm module sends the alarm signal to the ground monitoring center to ensure that timely measures are taken. The ground monitoring center includes a server, a workstation and remote communication equipment. The server stores and processes data information transmitted from the central control unit and the alarm device. The workstation is used by operators to monitor and analyze gas concentration, sensor position and working face environment image information in real time. The remote communication equipment realizes remote communication between the ground monitoring center and the comprehensive mining working face. The real-time monitoring method of the gas sensor position at the return air corner of the comprehensive mining working face includes five steps: hanging gas sensor, model matching, relative size ratio calculation, anchor reference and logic implementation. Through these steps, it is ensured that the gas sensor is always in the correct position and an alarm message is issued when the gas concentration exceeds the standard or the sensor position is abnormal.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A real-time monitoring system for the position of return air corner gas sensors in a fully mechanized mining face, characterized in that: It includes a gas sensor, a mobile mechanism, a hydraulic support, a monitoring camera, a central control unit, an alarm device and a ground monitoring center. The mobile mechanism is connected to the gas sensor, and the hydraulic support is used to support the mobile mechanism.

2. The real-time monitoring system for the return air corner gas sensor position of the fully mechanized mining face according to claim 1 is characterized by: The moving mechanism comprises a track and a driving device.

3. The real-time monitoring system for the return air corner gas sensor position of the fully mechanized mining face according to claim 1 is characterized by: The track is arranged at the top of the return air corner of the fully mechanized mining working face.

4. The real-time monitoring system for the return air corner gas sensor position of the fully mechanized mining face according to claim 1 is characterized by: The central control unit includes a data processing module, a communication module and a display module.

5. The real-time monitoring system for the return air corner gas sensor position of the fully mechanized mining face according to claim 1 is characterized by: The alarm device comprises an audible and visual alarm and a wireless alarm module.

6. The real-time monitoring system for the return air corner gas sensor position of the fully mechanized mining face according to claim 1 is characterized by: The ground monitoring center includes a server, a workstation and remote communication equipment.

7. A method for real-time monitoring of the position of the return air corner gas sensor in a fully mechanized mining face, characterized in that: The real-time monitoring system for the position of the return air corner gas sensor of the fully mechanized mining face according to any one of claims 1 to 6 specifically comprises the following steps: Step 1: Hang the gas sensor: Hang the gas sensor vertically on the mobile mechanism. The distance between the gas sensor and the top plate should not be greater than 300mm, and the distance between the gas sensor and the side wall of the tunnel should not be less than 200mm, and there should be no foreign objects wrapped around it. Step 2: Model matching: The identification of gas sensors is divided into two steps: target detection and image classification. Target detection can identify gas sensors in the surveillance area of ​​the surveillance camera according to the probability and determine their positions in the picture. The algorithm involved is F-RCNN. Image classification can further classify the detected objects to determine whether the hardware device at the identification point is a gas sensor. The algorithm involved is Resnet101. In addition, in the case of insufficient light, traditional image filtering methods will be used to highlight the high-frequency information inside the image, so as to make the object boundary more prominent and improve the detection accuracy of the sensor. Step 3: Relative size ratio calculation: By calculating the ratio of the size of the gas sensor to the actual size, the relative distance between the gas sensor and the upper partition and the upper wall can be obtained. By calculating the ratio of the image size to the anchor image in normal conditions, it can be determined whether the distance between the gas sensor and the surveillance camera has changed significantly. Step 4: Anchor reference: When it is determined that the scene is a hydraulic support device, the hydraulic support in the picture needs to be identified. The identification process is also divided into two steps: target detection of the hydraulic support and image classification. Target detection can identify the hydraulic support in the monitoring area of ​​the surveillance camera according to the probability size and determine its position in the picture. The algorithm involved is F-RCNN. After the hydraulic support is detected, its direction needs to be determined. At the same time, the detected object can be further classified through image classification to determine whether the hardware device at the identification location is a hydraulic support. The algorithm involved is Resnet101. Step 5: Logical implementation: After identifying the gas sensor and hydraulic support, it is necessary to determine whether the gas sensor is in the correct position. The real position information of the gas sensor is determined by proportional calculation and analysis based on the image angle, coordinate information of the gas sensor, size of the detection frame and the normal anchor image. It is considered legal within the range that does not exceed the threshold. When the gas sensor disappears from the image or the abnormal installation time exceeds the allowed time, an alarm message is immediately issued through the alarm device.

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