A microseismic sensor

Abstract

The utility model provides a kind of microseismic sensor, comprising: shell, shell inside hollow setting, wave detection element is installed in shell inside, the one end of shell is installed with cable, cable is connected with wave detection element signal;Adapter component, adapter component is set to the one end of shell away from cable, the one end of adapter component away from cable is provided with adapter, microseismic sensor is connected fixing device by adapter, to fix microseismic sensor, adapter component and shell are detachably connected.The microseismic sensor in the utility model solves the technical problem that microseismic sensor cannot be applied to different specifications of anchor rod or angle adjusting structure in the related art.

Description

Technical Field

[0001] This utility model relates to the field of coal mine rockburst detection technology, specifically to a micro-vibration sensor. Background Technology

[0002] Coal is a vital pillar and material foundation of my country's economy, and the mining depth of Chinese coal mines is increasing at a rate of 8-25 meters per year. The physical properties and stress environment of the surrounding rock mass in deeper coal seams are more complex. Simultaneously, with increased mining intensity, the range of overburden disturbance and dynamic and static loads significantly increase, leading to frequent rockburst disasters. Rockburst is a dynamic phenomenon characterized by the sudden and violent destruction of coal and rock masses due to the instantaneous release of elastic energy. It is accompanied by the ejection of large amounts of coal dust and rock, causing severe mine damage and casualties.

[0003] In existing technologies, microseismic monitoring systems are a commonly used method for monitoring rockbursts in mines. These systems utilize multiple microseismic sensors deployed underground to form a microseismic monitoring network, acquiring rock fracturing signals in and around the monitoring area. Typically, the microseismic sensors are directly fixed to the rock surface using anchor bolts. Furthermore, the detector elements inside the microseismic sensors are directional, requiring angle adjustment structures under certain conditions to maintain this directionality. However, current microseismic sensors are not compatible with anchor bolts or angle adjustment structures of different specifications, preventing the arbitrary replacement of anchor bolts or angle adjustment structures during the actual installation of the microseismic monitoring system.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a micro-vibration sensor to solve the technical problem that micro-vibration sensors cannot be applied to anchor bolts or angle adjustment structures of different specifications in related technologies.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a micro-vibration sensor is provided, comprising: a housing, the housing being hollow inside, a detector element installed inside the housing, a cable installed at one end of the housing, the cable being signal-connected to the detector element; a connecting component, the connecting component being located at the end of the housing away from the cable, the connecting component having a connecting part at the end away from the cable, the micro-vibration sensor being connected to a fixing device through the connecting part to fix the micro-vibration sensor, and the connecting component being detachably connected to the housing.

[0007] Furthermore, the adapter includes an adapter groove recessed on the adapter component, and a first internal thread is formed in the adapter groove.

[0008] Furthermore, a connecting groove is provided at the end of the housing away from the cable, the connecting groove contains at least part of the adapter component, a second internal thread is provided in the connecting groove, and a second external thread matching the second internal thread is provided on the adapter component.

[0009] Furthermore, the housing is provided with: a first mounting cavity in which a detector element is installed; and a second mounting cavity located on the side of the housing near the cable, which is connected to the first mounting cavity. The second mounting cavity is equipped with a circuit board, which is connected to the detector element and the cable signal respectively.

[0010] Furthermore, the micro-vibration sensor includes: a mounting base disposed in a first mounting cavity, the mounting base being used to support a detector element; and a mounting plate located at the opening of the first mounting cavity, the mounting plate being connected to the housing, and the side of the mounting plate near the detector element abutting against the detector element.

[0011] Furthermore, the micro-vibration sensor includes a cover, which is disposed at the end of the second mounting cavity away from the first mounting cavity. A cable is threaded through the cover, and the cover is detachably connected to the housing.

[0012] Furthermore, a cable connector is installed on the cover. The cable connector includes: a connector base, which is installed on the cover and a cable is threaded through the connector base; and a connector cap, which covers the connector base and is detachably connected to the connector base, and a cable is threaded through the connector cap. A sealing ring is fitted onto the cable and is located between the connector base and the connector cap.

[0013] Furthermore, the micro-vibration sensor includes a locking element, which is spaced apart from the connector cap. The locking element includes a first locking element and a second locking element that are disposed opposite to each other, and a cable is accommodated between the first locking element and the second locking element.

[0014] Furthermore, the micro-vibration sensor includes an indicator light, which is mounted on the cover and is connected to the circuit board for signal transmission.

[0015] Furthermore, a potentiometer is installed on the circuit board, and the micro-vibration sensor includes: an adjustment hole, the adjustment hole corresponding to the potentiometer being opened on the housing; and a sealing component, the sealing component being installed in the adjustment hole, the outer surface of the sealing component having a third external thread, and the adjustment hole having a third internal thread matching the third external thread. Beneficial effects: 1. This embodiment achieves flexible adaptation between the sensor and the external fixing device by setting an independent and detachable adapter component, which improves the installation compatibility and ease of use of the equipment in complex geological environments and solves the technical problem in related technologies that micro-vibration sensors cannot be applied to anchor bolts or angle adjustment structures of different specifications.

[0016] 2. A cable connector is installed on the cover, comprising: a connector base, which is mounted on the cover and through which a cable passes; a connector cap, which covers the connector base and is detachably connected to it, with the cable passing through it; and a sealing ring, which is fitted onto the cable and located between the connector base and the connector cap. By providing the cable connector, the cable is protected and supported. The connector cap and connector base are detachably connected via threads or snap-fit ​​mechanisms. During assembly, the sealing ring is pressed between them, causing it to elastically deform and tightly wrap around the cable. This seals the mating surface between the connector base and the connector cap, achieving efficient waterproof and dustproof sealing of the cable exit point. This prevents moisture, coal dust, and other harmful foreign matter from seeping into the housing along the cable, ensuring the normal operating environment of the detector elements and circuit board. It also improves the protection level and operational stability of the sensor in harsh mining environments such as humid and dusty conditions, giving the micro-vibration sensor a waterproof sealing function.

[0017] 3. The micro-vibration sensor includes a locking element, which is spaced apart from the connector cap. The locking element includes a first locking element and a second locking element that are positioned opposite each other, with a cable accommodated between the first and second locking elements. The locking element is used to clamp and support the cable, preventing displacement or damage to the cable due to external forces. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the micro-vibration sensor used in an embodiment of this utility model; Figure 2 This is a second-view structural schematic diagram of the micro-vibration sensor used in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the micro-vibration sensor used in this embodiment of the utility model; Figure 4 This is an exploded view of the micro-vibration sensor used in this embodiment of the utility model.

[0019] The above figures include the following reference numerals: 1. Housing; 11. Connecting groove; 12. First mounting cavity; 13. Second mounting cavity; 14. Mounting base; 15. Mounting pressure plate; 16. Adjustment hole; 17. Sealing component; 2. Detector element; 3. Cable; 4. Adapter component; 41. Adapter groove; 5. Circuit board; 51. First circuit board; 52. Second circuit board; 6. Cover; 7. Cable connector; 71. Connector base; 72. Connector cap; 73. Sealing ring; 8. Locking component; 9. Indicator light. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a micro-vibration sensor is provided. Please refer to [link / reference]. Figures 1 to 4 The device includes: a housing 1, which is hollow inside and has a detector element 2 installed inside. A cable 3 is installed at one end of the housing 1 and is connected to the detector element 2 for signal transmission. A connecting component 4 is located at the end of the housing 1 away from the cable 3 and has a connecting part at the end away from the cable 3. The micro-vibration sensor is connected to a fixing device through the connecting part to fix the micro-vibration sensor. The connecting component 4 is detachably connected to the housing 1.

[0022] Understandably, the adapter can be designed in different structural forms according to actual installation requirements, such as threaded holes or screws, slots or ball joints, to adapt to anchor rods of different specifications or adjustable angle mounting brackets.

[0023] Specifically, the detector element 2, as the core unit of the sensor, is used to detect micro-vibration signals and convert them into electrical signals. One end of the micro-vibration sensor is equipped with a cable 3, and the other end is equipped with an adapter 4. The micro-vibration sensor is connected to an external fixing device through the adapter part of the adapter 4, allowing it to be transferred to the fixing device, such as an anchor bolt or an angle adjustment structure. The adapter 4 is detachably connected to the housing 1, and a new adapter 4 can be replaced according to its compatibility with the fixing device, enabling quick replacement of the adapter 4.

[0024] This embodiment achieves flexible adaptation between the sensor and the external fixing device by setting an independent and detachable adapter component, which improves the installation compatibility and ease of use of the equipment in complex geological environments and solves the technical problem in related technologies that micro-seismic sensors cannot be applied to anchor bolts or angle adjustment structures of different specifications.

[0025] Optionally, the detector element 2 is either a single-axis accelerometer or a triaxial accelerometer.

[0026] In the micro-vibration sensor of this embodiment, see Figure 1The adapter includes an adapter groove 41 recessed in the adapter component 4, with a first internal thread inside the adapter groove 41. This allows the threaded rod of an external fixing device, such as an anchor rod or adjusting bracket, to be inserted into the adapter groove 41. The first internal thread in the adapter groove 41 engages with the external thread on the external fixing device. This threaded engagement achieves mechanical fastening between the micro-vibration sensor and the fixing device, and also makes the connection detachable. When it is necessary to change the installation position or adjust the sensor's attitude, the micro-vibration sensor can be quickly disassembled or installed by rotation.

[0027] In the micro-vibration sensor of this embodiment, see Figure 3-4 The housing 1 has a connecting groove 11 at the end away from the cable 3. The connecting groove 11 accommodates at least part of the adapter component 4. The connecting groove 11 has a second internal thread, and the adapter component 4 has a second external thread that matches the second internal thread. In this way, the adapter component 4 is inserted into the connecting groove 11, and the second internal thread in the connecting groove 11 is used to engage with the second external thread on the adapter component 4. Through the thread engagement, the mechanical fastening between the adapter component 4 and the housing 1 is achieved, and the connection is detachable. When it is necessary to replace the adapter component 4, it can be quickly disassembled or installed by rotation.

[0028] In some embodiments, the connecting groove 11 is a closed groove that is not connected to the inside of the housing, so as to increase the sealing performance of the housing.

[0029] In some embodiments, an anti-rotation surface is provided on the outer surface of the adapter 4. The extension direction of the anti-rotation surface is parallel to the axis of the micro-vibration sensor. There are two anti-rotation surfaces, which are arranged opposite to each other to facilitate the tool to clamp the adapter 4 and rotate the adapter 4.

[0030] In the micro-vibration sensor of this embodiment, see Figure 3 The housing 1 contains: a first mounting cavity 12, in which a detector element 2 is installed; and a second mounting cavity 13, located on the side of the housing 1 closest to the cable 3, which is interconnected with the first mounting cavity 12. A circuit board 5 is installed in the second mounting cavity 13, and the circuit board 5 is connected to both the detector element 2 and the cable 3 for signal transmission. By dividing the interior of the housing 1 into two functionally independent chambers, the detector element 2 and the circuit board 5 are arranged in separate zones. The first mounting cavity 12 provides a stable and enclosed mounting environment for the detector element 2, while the second mounting cavity 13 is specifically designed to house the circuit board 5, which performs signal processing or primary amplification functions, thereby providing accurate and reliable ground pressure monitoring results.

[0031] In some embodiments, the circuit board 5 includes a first circuit board 51 and a second circuit board 52 spaced apart, enabling the micro-vibration sensor to perform functions such as signal amplification, filtering, and signal conversion. That is, after the micro-vibration signal is detected by the detector element 2, the micro-vibration signal is converted into an electrical signal by the detector element 2. The electrical signal is transmitted to the circuit board 5, where the circuit board 5 amplifies and filters the electrical signal, converts the electrical signal into a digital signal, and then the digital signal is transmitted to the data acquisition center.

[0032] In some embodiments, the second mounting cavity 13 and the first mounting cavity 12 have different inner diameters, and the inner diameters of the second mounting cavity 13 and the first mounting cavity 12 can be adjusted according to the size of the detector element 2 or the circuit board 5.

[0033] In the micro-vibration sensor of this embodiment, see Figure 3 The micro-vibration sensor includes: a mounting base 14, which is disposed in a first mounting cavity 12 and supports the detector element 2; and a mounting pressure plate 15, which is located at the opening of the first mounting cavity 12 and connected to the housing 1. The side of the mounting pressure plate 15 closest to the detector element 2 abuts against the detector element 2. Specifically, the mounting base 14 supports the detector element 2, ensuring accurate and uniform installation of the detector element 2 within the housing 1. The mounting pressure plate 15 directly abuts against the detector element 2, forming an axial clamping and fixing mechanism. The mounting base 14 and the mounting pressure plate 15 together constitute a clamping and fixing structure for both ends of the detector element 2, ensuring uniform axial clamping and symmetrical force distribution, preventing the detector element 2 from loosening, shifting, or falling off due to vibration or impact during transportation, installation, or long-term operation.

[0034] In some embodiments, the inner diameter of the first mounting cavity 12 is smaller than the inner diameter of the second mounting cavity 13. The mounting plate 15 is disposed in the second mounting cavity 13, and the mounting plate 15 is locked on the step between the first mounting cavity 12 and the second mounting cavity 13 by fasteners. At the same time, a pressure ring can be provided on the side of the mounting plate 15 near the detector element 2. The pressure ring can extend into the first mounting cavity 12 and abut against the detector element 2 to press the detector element 2.

[0035] In the micro-vibration sensor of this embodiment, see Figure 1 The micro-vibration sensor includes a cover 6, which is located at the end of the second mounting cavity 13 away from the first mounting cavity 12. A cable 3 is threaded through the cover 6, and the cover 6 is detachably connected to the housing 1. By providing the cover 6, a sealed environment is formed inside the housing, preventing external water or foreign objects from entering the housing.

[0036] In the micro-vibration sensor of this embodiment, see Figure 2-4The cover 6 is equipped with a cable connector 7, which includes: a connector base 71, which is installed on the cover 6 and has a cable 3 passing through it; a connector cap 72, which covers the connector base 71 and is detachably connected to the connector base 71, and has a cable 3 passing through it; and a sealing ring 73, which is sleeved on the cable 3 and is located between the connector base 71 and the connector cap 72. By setting up a cable connector 7 to protect and support the cable 3, and connecting the connector cap 72 and the connector base 71 to each other in a detachable manner such as by threads or snaps, the sealing ring 73 is pressed between the two during assembly, causing the sealing ring 73 to elastically deform and tightly wrap around the outer periphery of the cable 3. At the same time, the joint surface between the connector base 71 and the connector cap 72 is sealed, achieving efficient waterproof and dustproof sealing of the cable exit point. This prevents harmful foreign objects such as moisture and coal dust from seeping into the housing 1 along the cable 3, ensuring the normal working environment of the detector element 2 and the circuit board 5, improving the protection level and operational stability of the sensor in harsh mining environments such as humid and dusty conditions, and enabling the micro-vibration sensor to have a waterproof sealing function.

[0037] In some embodiments, a sealing ring mounting groove is provided on the cover 6, and a sealing ring is installed between the cover 6 and the inner wall of the housing to further increase the sealing performance of the housing.

[0038] In the micro-vibration sensor of this embodiment, see Figure 3-4 The micro-vibration sensor includes a locking member 8, which is spaced apart from the connector cap 72. The locking member 8 includes a first locking member and a second locking member disposed opposite to each other, with the cable 3 accommodated between the first locking member and the second locking member. By providing the locking member 8, the cable 3 is clamped and supported, preventing the cable 3 from being displaced or damaged due to external forces.

[0039] In some embodiments, a connecting plate can be provided on the connector cap 72, and a first locking member and a second locking member are respectively provided on both sides of the connecting plate. Screws pass through the first locking member and the second locking member respectively, thereby fastening the first locking member and the second locking member to the connecting plate, so that the locking member 8 and the connector cap 72 are kept in a relatively fixed position, preventing the cable 3 from being displaced or damaged due to external force.

[0040] In the micro-vibration sensor of this embodiment, see Figure 2 The micro-vibration sensor includes an indicator light 9, which is mounted on the cover 6 and is connected to the circuit board 5. By setting the indicator light 9, the communication status can be confirmed during the signal self-test program.

[0041] In some embodiments, the indicator light 9 can emit an indicator light based on the detection results of the micro-vibration sensor, thereby allowing the user to obtain the detection status.

[0042] In the micro-vibration sensor of this embodiment, see Figure 1 or Figure 3 A potentiometer is mounted on circuit board 5. The micro-vibration sensor includes: an adjustment hole 16, which corresponds to the potentiometer and is located on housing 1; and a sealing component 17, which is installed in the adjustment hole 16. The outer surface of the sealing component 17 has a third external thread, and the adjustment hole 16 has a third internal thread that matches the third external thread. With this configuration, the amplification factor of the potentiometer can be adjusted directly from outside the micro-vibration sensor using tools, making the application of the micro-vibration sensor more convenient and efficient.

[0043] In some embodiments, the sealing component 17 can be a hexagonal flat-end set screw. During the adjustment process, the sealing component 17 is adjusted with a screwdriver to change the amplification factor of the potentiometer. After adjusting to a suitable amplification factor, the sealing component 17 is installed into the adjustment hole 16, and then the adjustment hole 16 is sealed with glue such as 704 glue to seal the inside of the housing.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0046] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0047] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0048] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A micro-vibration sensor, characterized in that, include: A housing (1) is hollow inside, and a detector element (2) is installed inside the housing (1). A cable (3) is installed at one end of the housing (1) and the cable (3) is connected to the detector element (2) for signal transmission. The adapter (4) is located at one end of the housing (1) away from the cable (3). The adapter (4) has a connecting part at one end away from the cable (3). The micro-vibration sensor is connected to the fixing device through the connecting part to fix the micro-vibration sensor. The adapter (4) is detachably connected to the housing (1).

2. The micro-vibration sensor according to claim 1, characterized in that, The adapter includes an adapter groove (41) recessed on the adapter component (4), and a first internal thread is provided in the adapter groove (41).

3. The micro-vibration sensor according to claim 1, characterized in that, The housing (1) has a connecting groove (11) at one end away from the cable (3). The connecting groove (11) contains at least part of the adapter (4). The connecting groove (11) has a second internal thread, and the adapter (4) has a second external thread that matches the second internal thread.

4. The micro-vibration sensor according to claim 1, characterized in that, The housing (1) is provided with the following inside: The first mounting cavity (12) is in which the detector element (2) is installed; The second mounting cavity (13) is located on the side of the housing (1) near the cable (3). The second mounting cavity (13) is connected to the first mounting cavity (12). A circuit board (5) is installed in the second mounting cavity (13). The circuit board (5) is connected to the detector element (2) and the cable (3) respectively.

5. The micro-vibration sensor according to claim 4, characterized in that, The micro-vibration sensor includes: Mounting base (14) is disposed in the first mounting cavity (12) and is used to support the detector element (2). Mounting plate (15) is located at the opening of the first mounting cavity (12). The mounting plate (15) is connected to the housing (1). The mounting plate (15) abuts against the detector element (2) on the side close to the detector element (2).

6. The micro-vibration sensor according to claim 4, characterized in that, The micro-vibration sensor includes a cover (6), which is located at one end of the second mounting cavity (13) away from the first mounting cavity (12). The cable (3) is threaded through the cover (6), and the cover (6) is detachably connected to the housing (1).

7. The micro-vibration sensor according to claim 6, characterized in that, A cable connector (7) is installed on the cover (6), and the cable connector (7) includes: Connector base (71), the connector base (71) is installed on the cover (6), and the cable (3) is passed through the inside of the connector base (71). The connector cap (72) is covered on the connector base (71), and the connector cap (72) is detachably connected to the connector base (71). The cable (3) is passed through the inside of the connector cap (72). A sealing ring (73) is fitted onto the cable (3) and is located between the connector base (71) and the connector cap (72).

8. The micro-vibration sensor according to claim 7, characterized in that, The micro-vibration sensor includes a locking member (8), which is spaced apart from the connector cap (72). The locking member (8) includes a first locking member and a second locking member disposed opposite to each other, and the cable (3) is accommodated between the first locking member and the second locking member.

9. The micro-vibration sensor according to claim 6, characterized in that, The micro-vibration sensor includes an indicator light (9), which is mounted on the cover (6) and is connected to the circuit board (5) via signal.

10. The micro-vibration sensor according to claim 4, characterized in that, A potentiometer is mounted on the circuit board (5), and the micro-vibration sensor includes: An adjustment hole (16) is provided on the housing (1) corresponding to the potentiometer; A sealing component (17) is installed in the adjusting hole (16). The outer surface of the sealing component (17) is provided with a third external thread, and the adjusting hole (16) is provided with a third internal thread that matches the third external thread.

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