Microseismic monitoring sensor for coal mine

Abstract

The invention provides a coal mine micro-seismic monitoring sensor, which comprises a self-checking and self-calibration module, a tilt angle sensor, a data acquisition module, an edge calculation module and a magnetoelectric sensing core body, and is characterized in that the tilt angle sensor is used for monitoring the pose tilt angle of the coal mine micro-seismic monitoring sensor; the magnetoelectric sensing core body is used for sensing vibration of a coal and rock mass so as to convert corresponding mechanical vibration during vibration of the coal and rock mass into a voltage signal; the self-checking and self-calibrating module is used for acquiring the sensitivity of the magnetoelectric sensing core body; the edge calculation module is used for receiving the sensitivity, the pose inclination angle and the voltage signal acquired by the data acquisition module and performing calculation and analysis to obtain an analysis result, and the analysis result is used for determining the working state of the coal mine micro-seismic monitoring sensor and the vibration early warning level of the corresponding coal mine tunnel. Therefore, the coal mine micro-seismic monitoring sensor can autonomously analyze the sensitivity, the pose inclination angle and the voltage signal, the working state of the coal mine micro-seismic monitoring sensor can be sensed on site in a coal mine, and troubleshooting can be carried out in time.

Description

Technical Field

[0001] This application relates to the field of sensor technology, and in particular to a micro-vibration monitoring sensor for coal mines. Background Technology

[0002] Currently, the calibration of coal mine microseismic sensors must be completed in a laboratory, requiring the sensors to be disassembled from underground and transported to the lab. This results in delays and disrupts normal monitoring by the mine. Furthermore, current coal mine microseismic sensors lack real-time position and orientation monitoring capabilities, causing many sensors to tilt beyond the required range and resulting in data distortion. Additionally, the operational status of current coal mine microseismic sensors cannot be immediately determined on-site, hindering timely troubleshooting. Summary of the Invention

[0003] One objective of this application is to propose a coal mine microseismic monitoring sensor that can autonomously analyze sensitivity, tilt angle, and voltage signals, enabling on-site perception of the working status of the coal mine microseismic monitoring sensor in the coal mine, which is beneficial for timely fault diagnosis.

[0004] To achieve the above objectives, this application proposes a coal mine micro-seismic monitoring sensor, which includes a self-testing and self-calibrating module, a tilt sensor, a data acquisition module, an edge computing module, and a magnetoelectric sensing core, wherein: The tilt sensor is used to monitor the tilt angle of the coal mine micro-vibration monitoring sensor and transmit the tilt angle to the data acquisition module. The magnetoelectric sensing core is used to sense the vibration of the coal and rock mass, so as to convert the mechanical vibration corresponding to the vibration of the coal and rock mass into a voltage signal, and then transmit it to the data acquisition module. The self-test and self-calibration module is used to collect the sensitivity of the magnetoelectric sensing core and transmit it to the data acquisition module. The edge computing module is used to receive the sensitivity, pose tilt angle and voltage signals collected by the data acquisition module, and perform calculation and analysis to obtain analysis results. The analysis results are used to determine the working status of the coal mine microseismic monitoring sensor and the vibration warning level of the corresponding coal mine roadway.

[0005] In addition, the coal mine microseismic monitoring sensor proposed in this application may also have the following additional technical features: In some embodiments, the sensor housing of the coal mine microseismic monitoring sensor also has a threaded structure and / or a rotatable joint, which is installed at the end of the anchor bolt.

[0006] In some embodiments, the coal mine microseismic monitoring sensor further includes a status indicator light, which is used to indicate the working status of the coal mine microseismic monitoring sensor, including coal mine microseismic monitoring sensor malfunction and coal mine microseismic monitoring sensor signal distortion.

[0007] In some embodiments, the edge computing module is further configured to control the status indicator light to display a first color when the sensitivity is less than a set sensitivity threshold, the first color being used to indicate an abnormality in the coal mine micro-vibration monitoring sensor.

[0008] In some embodiments, the self-testing and self-calibration module is further configured to calibrate the sensitivity of the magnetoelectric sensing core when the sensitivity is less than a set sensitivity threshold, until the sensitivity of the magnetoelectric sensing core is greater than or equal to the sensitivity threshold.

[0009] In some embodiments, the edge computing module is further configured to control the status indicator light to display a second color when it detects that the pose tilt angle is greater than a set tilt angle threshold range. The second color is used to indicate signal distortion of the coal mine micro-vibration monitoring sensor.

[0010] In some embodiments, the coal mine microseismic monitoring sensor further includes a signal line, which is used to transmit the analysis results to a preset coal mine microseismic monitoring device for remote vibration early warning, and also to power the coal mine microseismic monitoring sensor.

[0011] In some embodiments, the edge computing module is further configured to control the status indicator light to display a third color when a power supply abnormality is detected.

[0012] This application discloses a coal mine microseismic monitoring sensor, including a self-testing and self-calibrating module, a tilt sensor, a data acquisition module, an edge computing module, and a magnetoelectric sensing core. The tilt sensor monitors the tilt angle of the coal mine microseismic monitoring sensor; the magnetoelectric sensing core senses the vibration of the coal and rock mass, converting the corresponding mechanical vibration into a voltage signal; the self-testing and self-calibrating module acquires the sensitivity of the magnetoelectric sensing core; and the edge computing module receives the sensitivity, tilt angle, and voltage signals acquired by the data acquisition module, performs calculations and analysis to obtain analysis results. These analysis results are used to determine the working status of the coal mine microseismic monitoring sensor and the corresponding vibration warning level of the coal mine roadway. Therefore, the coal mine microseismic monitoring sensor can autonomously analyze its sensitivity, tilt angle, and voltage signals, enabling on-site perception of the sensor's working status in the coal mine, which is beneficial for timely fault diagnosis.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a coal mine microseismic monitoring sensor provided in an embodiment of this application. Detailed Implementation

[0015] The embodiments of this application are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0016] The following describes an embodiment of the coal mine microseismic monitoring sensor with reference to the accompanying drawings.

[0017] Figure 1 This is a structural diagram of a coal mine microseismic monitoring sensor according to an embodiment of this application.

[0018] like Figure 1 As shown in the embodiment of this application, the coal mine microseismic monitoring sensor includes a self-testing and self-calibrating module 4, a tilt sensor 5, a data acquisition module 6, an edge computing module 7, and a magnetoelectric sensing core 8. Specifically: the tilt sensor 5 monitors the tilt angle of the coal mine microseismic monitoring sensor and transmits the tilt angle to the data acquisition module 6; the magnetoelectric sensing core 8 senses the vibration of the coal and rock mass, converting the corresponding mechanical vibration into a voltage signal, which is then transmitted to the data acquisition module 6; the self-testing and self-calibrating module 4 collects the sensitivity of the magnetoelectric sensing core 8 and transmits it to the data acquisition module 6; the edge computing module 7 receives the sensitivity, tilt angle, and voltage signals collected by the data acquisition module 6, performs calculations and analyses to obtain analysis results, which are used to determine the working status of the coal mine microseismic monitoring sensor and the vibration warning level of the corresponding coal mine roadway.

[0019] In some embodiments, such as Figure 1 As shown, the sensor housing 2 of the coal mine micro-vibration monitoring sensor also has a threaded structure 1 and / or a rotatable joint 10, which are installed at the end of the anchor rod through the threaded structure 1 (e.g., a threaded hole) or the rotatable joint 10.

[0020] As an example, when installing a coal mine microseismic monitoring sensor, it is necessary to screw the coal mine microseismic monitoring sensor to the end of the anchor rod, which can easily cause the signal line 11 to be broken or damaged. The rotatable connector 10 can avoid the above situation.

[0021] In some embodiments, such as Figure 1As shown, the coal mine microseismic monitoring sensor also includes status indicator lights, which indicate the sensor's operating status, including abnormality and signal distortion. Therefore, the coal mine microseismic sensor possesses edge computing and status display capabilities, allowing for immediate monitoring of its operating status in the underground coal mine, facilitating timely troubleshooting.

[0022] In some embodiments, the edge computing module 7 is further configured to control the status indicator light to display a first color when the sensitivity is detected to be less than a set sensitivity threshold. The first color is used to indicate an abnormality in the coal mine micro-vibration monitoring sensor.

[0023] In some embodiments, the self-testing and self-calibration module 4 is further used to calibrate the sensitivity of the magnetoelectric sensing core 8 when the sensitivity is less than a set sensitivity threshold, until the sensitivity of the magnetoelectric sensing core 8 is greater than or equal to the sensitivity threshold. Thus, the coal mine micro-vibration sensor possesses a self-testing and self-calibration function, enabling verification in underground coal mines, reducing calibration time, and improving the monitoring efficiency for coal mine operators.

[0024] As an example, by monitoring the sensitivity changes in real time and sending the calibration results to the data acquisition module 6 in real time, if the sensitivity is lower than the sensitivity threshold, it indicates that the sensor cannot be used, that is, the coal mine microseismic monitoring sensor is faulty and needs to be repaired.

[0025] In some embodiments, the edge computing module 7 is further configured to control the status indicator light to display a second color when it detects that the tilt angle is greater than a set tilt angle threshold range. The second color is used to indicate signal distortion of the coal mine micro-seismic monitoring sensor. Thus, the coal mine micro-seismic sensor possesses a real-time tilt angle monitoring function, enabling rapid troubleshooting and maintenance.

[0026] As an example, the pose and tilt angle of the coal mine microseismic monitoring sensor is monitored in real time, and the pose and tilt angle data is transmitted to the data acquisition module 6 in real time. The edge computing module 7 then determines whether the pose and tilt angle exceeds the specified value. In certain situations, the signals from coal mine microseismic monitoring sensors may become distorted.

[0027] In some embodiments, such as Figure 1 As shown, the coal mine micro-seismic monitoring sensor also includes a signal line 11, which is used to transmit the analysis results to the preset coal mine micro-seismic monitoring equipment for remote vibration early warning, and also to power the coal mine micro-seismic monitoring sensor.

[0028] In some embodiments, the edge computing module 7 is also configured to control the status indicator light to display a third color when a power supply abnormality is detected.

[0029] In summary, as an example, when the power supply is abnormal, the status indicator light displays red; for the self-test and self-calibration module 4, when the edge computing module 7 calculates and determines that the sensitivity is less than the sensitivity threshold, the status indicator light displays yellow; for the tilt sensor 5, when the edge computing module 7 calculates and determines that the pose tilt angle is greater than the threshold, the status indicator light displays yellow. At that time, a command will be sent, and the status indicator light will turn blue.

[0030] In some embodiments, such as Figure 1 As shown, after all the internal components of the coal mine microseismic monitoring sensor are installed, solid glue 3 is injected, and after solidification, a complete coal mine microseismic monitoring sensor is obtained.

[0031] This application discloses a coal mine microseismic monitoring sensor, including a self-testing and self-calibrating module, a tilt sensor, a data acquisition module, an edge computing module, and a magnetoelectric sensing core. The tilt sensor monitors the tilt angle of the coal mine microseismic monitoring sensor; the magnetoelectric sensing core senses the vibration of the coal and rock mass, converting the corresponding mechanical vibration into a voltage signal; the self-testing and self-calibrating module acquires the sensitivity of the magnetoelectric sensing core; and the edge computing module receives the sensitivity, tilt angle, and voltage signals acquired by the data acquisition module, performs calculations and analysis to obtain analysis results. These analysis results are used to determine the working status of the coal mine microseismic monitoring sensor and the corresponding vibration warning level of the coal mine roadway. Therefore, the coal mine microseismic monitoring sensor can autonomously analyze its sensitivity, tilt angle, and voltage signals, enabling on-site perception of the sensor's working status in the coal mine, which is beneficial for timely fault diagnosis.

[0032] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, without contradiction. Additionally, 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 indicated technical features.

[0033] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0034] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0035] Those skilled in the art will understand that all or part of the steps carried by the system of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the system embodiments.

[0036] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0037] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A microseismic monitoring sensor for coal mines, characterized in that, The coal mine micro-seismic monitoring sensor includes a self-testing and self-calibrating module, a tilt sensor, a data acquisition module, an edge computing module, and a magnetoelectric sensing core, wherein: The tilt sensor is used to monitor the tilt angle of the coal mine micro-vibration monitoring sensor and transmit the tilt angle to the data acquisition module. The magnetoelectric sensing core is used to sense the vibration of the coal and rock mass, so as to convert the mechanical vibration corresponding to the vibration of the coal and rock mass into a voltage signal, and then transmit it to the data acquisition module. The self-test and self-calibration module is used to collect the sensitivity of the magnetoelectric sensing core and transmit it to the data acquisition module. The edge computing module is used to receive the sensitivity, pose tilt angle and voltage signals collected by the data acquisition module, and perform calculation and analysis to obtain analysis results. The analysis results are used to determine the working status of the coal mine microseismic monitoring sensor and the vibration warning level of the corresponding coal mine roadway.

2. The coal mine microseismic monitoring sensor according to claim 1, characterized in that, The sensor housing of the coal mine microseismic monitoring sensor also has a threaded structure and / or a rotatable joint, which is used to install the sensor at the end of the anchor bolt.

3. The coal mine microseismic monitoring sensor according to claim 1, characterized in that, The coal mine microseismic monitoring sensor also includes a status indicator light, which is used to indicate the working status of the coal mine microseismic monitoring sensor. The working status includes coal mine microseismic monitoring sensor malfunction and coal mine microseismic monitoring sensor signal distortion.

4. The coal mine microseismic monitoring sensor according to claim 3, characterized in that, The edge computing module is also used to control the status indicator light to display a first color when the sensitivity is less than a set sensitivity threshold. The first color is used to indicate an abnormality in the coal mine micro-vibration monitoring sensor.

5. The coal mine microseismic monitoring sensor according to claim 4, characterized in that, The self-test and self-calibration module is also used to calibrate the sensitivity of the magnetoelectric sensing core when the sensitivity is less than the set sensitivity threshold, until the sensitivity of the magnetoelectric sensing core is greater than or equal to the sensitivity threshold.

6. The coal mine microseismic monitoring sensor according to claim 3, characterized in that, The edge computing module is also used to control the status indicator light to display a second color when it detects that the pose tilt angle is greater than a set tilt angle threshold range. The second color is used to indicate the signal distortion of the coal mine micro-vibration monitoring sensor.

7. The coal mine microseismic monitoring sensor according to claim 3, characterized in that, The coal mine microseismic monitoring sensor also includes a signal line, which is used to transmit the analysis results to a preset coal mine microseismic monitoring device for remote vibration early warning, and also to power the coal mine microseismic monitoring sensor.

8. The coal mine microseismic monitoring sensor according to claim 7, characterized in that, The edge computing module is also used to control the status indicator light to display a third color when a power supply abnormality is detected.

Images