A micro-vibration monitoring device based on three-component accelerometer

Abstract

The application discloses a micro-vibration monitoring device based on a three-component accelerometer, which is installed at a preset position on the ground and used for micro-vibration monitoring in geological disaster monitoring and early warning, a placing hole is formed at the preset position, and the micro-vibration monitoring device comprises a base, a control cabinet and a monitoring column, the control cabinet is arranged on the base, a through hole which is in communication with the placing hole is further formed in the base, the monitoring column passes through the through hole and is vertically arranged in the placing hole, the hole wall of the placing hole is gradually expanded from bottom to top, and a three-component accelerometer which is in communication connection with the control cabinet is arranged on the monitoring column. The inclination swing of the monitoring column can avoid buffering and shock absorption of slight and low-frequency vibration due to the length of the monitoring column, the transmission effect of vibration is good, the three-component accelerometer can timely and effectively monitor the vibration, the monitoring accuracy of the three-component accelerometer is improved, and the prevention effect on geological disasters is improved.

Description

Technical Field

[0001] This invention relates to the field of geological disaster monitoring and early warning technology, and in particular to a micro-vibration monitoring device based on a three-component force accelerometer. Background Technology

[0002] Geological disasters refer to geological hazards such as landslides, mudslides, debris flows, ground subsidence, ground fissures, and ground settlement that endanger people's lives and property, caused by natural factors or human activities. To minimize the harm and losses caused by geological disasters to human society, real-time monitoring of geological disasters and timely issuance of early warning information can be achieved through equipment such as micro-vibration monitoring devices, thereby playing a role in disaster prevention and mitigation.

[0003] The applicant obtained the following prior art through the search formula "cl:(micro-vibration) AND cl:(monitoring) OR cl:(three-part force accelerometer) AND desc:(geological disaster)". Specifically, patent publication number CN216792457U discloses a signal self-detection type micro-vibration monitoring device, including a micro-vibration sensor, a vibration unit, a transmission unit, an anchor rod, and a fixing part. The lower end of the micro-vibration sensor is connected to the anchor rod to receive the micro-vibration signal transmitted by the anchor rod, and the upper end of the micro-vibration sensor is connected to the transmission unit. The transmission unit includes a cable and a signal line. The cable supplies power to the vibration unit, and the signal line transmits the micro-vibration signal. The vibration unit includes a shell, a motor, a rubber pad, and a vibration rod. The lower part of the vibration rod is cast and fixed in concrete. The rubber pad is wrapped around the motor, and the motor is installed inside the shell. The lower end of the shell is open, and the vibration rod is connected to the motor. The vibration rod includes a rotating section and a vibrating section. The rotating section is connected to the motor, and the vibrating section is connected to the fixing part. This monitoring device can realize self-detection of the usage and sensitivity of the micro-vibration sensor, and also has the advantages of simple structure and wide applicability.

[0004] As can be seen from the patent above, the monitoring device can realize self-testing of the usage and sensitivity of the microseismic sensor, and also has the advantages of simple structure and wide applicability. However, in actual use, since the anchor rod extends into the surrounding rock of the roadway and is anchored in the rock layer, and the anchor rod itself has a certain length, for small and low-frequency ground vibrations, the anchor rod usually buffers and absorbs vibrations during the process of transmitting vibrations to the microseismic sensor, resulting in poor transmission effect of small and low-frequency vibrations. This reduces the monitoring accuracy of the microseismic sensor and has a poor effect on preventing geological disasters. This application aims to provide a new way to accurately monitor small and low-frequency ground vibrations to prevent geological disasters. Summary of the Invention

[0005] The main objective of this invention is to provide a micro-vibration monitoring device based on a three-component force accelerometer, aiming to solve the problem that existing monitoring devices have poor transmission effects on small and low-frequency ground vibrations, reducing the monitoring accuracy of micro-vibration sensors and resulting in poor prevention of geological disasters. This application provides a new method for accurately monitoring small and low-frequency ground vibrations to prevent geological disasters.

[0006] To achieve the above objectives, the present invention provides a micro-vibration monitoring device based on a three-force accelerometer, which is installed at a predetermined position on the ground and used for micro-vibration monitoring in geological disaster monitoring and early warning. A placement hole is provided at the predetermined position, and the device includes a base, a control cabinet, and a monitoring column. The control cabinet is disposed on the base, and the base also has a through hole communicating with the placement hole. The monitoring column passes through the through hole and is vertically disposed in the placement hole. The wall of the placement hole gradually widens from bottom to top. A three-force accelerometer that is communicatively connected to the control cabinet is disposed on the monitoring column.

[0007] Preferably, one end of the placement hole is an open end and the other end is a closed end. The hole wall near the closed end forms an installation section for abutting against the outer wall of the monitoring column, and the hole wall near the open end gradually expands from bottom to top to form an expansion section that is separated from the outer wall of the monitoring column. The length of the expansion section is greater than the length of the installation section.

[0008] Preferably, the length of the mounting section is less than or equal to half the length of the expansion section.

[0009] Preferably, a flexible limiting ring is provided between the hole wall at the opening end of the placement hole and the outer wall of the monitoring column. The end of the monitoring column near the base extends out of the placement hole and is used to install the three-component force accelerometer. The end of the monitoring column away from the base is tapered from top to bottom.

[0010] Preferably, the base has a groove for placing the control cabinet, and the bottom of the groove has a through hole corresponding to the position of the placement hole. A cover plate for blocking the through hole is hinged in the groove. The cover plate is provided with a locking mechanism so that the cover plate can be detachably connected to the base, and a sealing structure is provided between the through hole and the cover plate.

[0011] Preferably, the control cabinet is equipped with a control module for communicating with the three-part force accelerometer.

[0012] Preferably, a fence is provided on the base along its circumference, a switch door is movably connected to the fence, the switch door is provided with a door lock, and an identification structure is also provided on the fence.

[0013] Beneficial effects:

[0014] In the micro-vibration monitoring device based on a three-force accelerometer of the present invention, since the placement hole is arranged to gradually expand from bottom to top, that is, the lower end of the monitoring column is fixedly installed with the lower end of the placement hole, while the upper end is separated from the placement hole, when the lower end of the monitoring column detects a small and low-frequency vibration of the ground, the monitoring column can swing with a corresponding amplitude in the placement hole. At this time, the monitoring column synchronously drives the three-force accelerometer on the monitoring column to swing, thereby realizing the accurate monitoring of the small and low-frequency vibration of the ground by the three-force accelerometer. Furthermore, since the three-force accelerometer is connected to the control cabinet, it can send early warning signals to the control cabinet in real time, so as to prevent geological disasters in a timely and effective manner. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a micro-vibration monitoring device based on a three-component force accelerometer according to an embodiment of the present invention from one viewpoint;

[0017] Figure 2 This is a top view of a micro-vibration monitoring device based on a three-component force accelerometer according to an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0019] Figure 4 yes Figure 3 A magnified view of a section at point B.

[0020] In the figure: 100 - a micro-vibration monitoring device based on a three-component force accelerometer; 1 - placement hole; 2 - base; 3 - control cabinet; 4 - monitoring column; 5 - through hole; 6 - three-component force accelerometer; 7 - flexible limiting ring; 8 - groove; 9 - cover plate; 10 - sealing structure; 11 - fence; 12 - opening and closing door; 13 - identification structure; 14 - door lock. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Example 1:

[0028] This invention proposes a micro-vibration monitoring device 100 based on a three-component force accelerometer.

[0029] In one embodiment of the present invention, a micro-vibration monitoring device 100 based on a three-component force accelerometer is installed at a preset position on the ground and used for micro-vibration monitoring in geological disaster monitoring and early warning. A placement hole 1 is provided at the preset position, including a base 2, a control cabinet 3 and a monitoring column 4. The control cabinet 3 is disposed on the base 2, and the base 2 is also provided with a through hole 5 communicating with the placement hole 1. The monitoring column 4 passes through the through hole 5 and is vertically disposed in the placement hole 1. The hole wall of the placement hole 1 is gradually widened from bottom to top. A three-component force accelerometer 6 that is communicatively connected to the control cabinet 3 is disposed on the monitoring column 4.

[0030] Specifically, such as Figures 1 to 4 As shown, the micro-vibration monitoring device 100 based on a three-component force accelerometer of the present invention is installed at a preset location on the ground. The preset location can be specifically set on a mountain slope, transportation road, or other area where micro-vibration monitoring is required. This allows for real-time micro-vibration monitoring of the area and serves as an early warning for geological disasters, offering flexible application. Furthermore, a placement hole 1 is provided at the preset location, and a through hole 5 communicating with the placement hole 1 is provided on the base 2. The monitoring column 4 passes through the through hole 5 and is vertically installed within the placement hole 1. The base 2 can be cast in place with concrete, facilitating sealing of the through hole 5 and the placement hole 1, and simplifying construction. The monitoring column 4 can be made of stainless steel tubing, preventing corrosion and damage after being embedded in the placement hole 1, which would affect the transmission of vibrations, thus improving reliability and extending the service life of the monitoring column 4. Understandably, since the placement hole 1 is set to gradually expand from bottom to top, that is, the lower end of the monitoring column 4 is fixedly installed with the lower end of the placement hole 1, while the upper end is separated from the placement hole 1, when the lower end of the monitoring column 4 detects a small and low-frequency vibration of the ground, the monitoring column 4 can swing with a corresponding amplitude within the placement hole 1. At this time, the monitoring column 4 synchronously drives the three-component force accelerometer 6 on the monitoring column 4 to swing, thereby realizing the accurate monitoring of the small and low-frequency vibration of the ground by the three-component force accelerometer 6. Furthermore, since the three-component force accelerometer 6 is connected to the control cabinet 3, it can send early warning signals to the control cabinet 3 in real time, so as to prevent geological disasters in a timely and effective manner.

[0031] Compared with the prior art, the present invention can avoid the monitoring column 4 from buffering and absorbing small and low-frequency vibrations due to its own length by monitoring the swaying and shaking of the column 4. The transmission effect of vibration is good, ensuring that the three-part force accelerometer 6 can monitor the vibration in a timely and effective manner, improving the monitoring accuracy of the three-part force accelerometer 6 and strengthening the prevention effect of geological disasters.

[0032] In one embodiment, one end of the placement hole 1 is an open end, and the other end is a closed end. The hole wall near the closed end of the placement hole 1 forms an installation section for abutting against the outer wall of the monitoring column 4, and the hole wall near the open end gradually expands from bottom to top, forming an expansion section that separates from the outer wall of the monitoring column 4. The length of the expansion section is greater than the length of the installation section. Specifically, as shown... Figure 3 As shown, the upper end of the placement hole 1 is an open end, and the lower end is a closed end. The hole wall near the closed end of the placement hole 1 forms an installation section for abutting against the outer wall of the monitoring column 4, thereby ensuring the stability of the monitoring column 4 in the placement hole 1. The hole wall near the open end gradually expands from bottom to top, forming an expansion section that is separated from the outer wall of the monitoring column 4. The length of the expansion section is greater than the length of the installation section, which allows the upper end of the monitoring column 4 to swing further relative to the lower end. This ensures the vibration transmission effect of the monitoring column 4 and prevents the monitoring column 4 from buffering and absorbing small and low-frequency vibrations due to its own length, making it reliable in use.

[0033] In one embodiment, the length of the mounting section is less than or equal to half the length of the expansion section. Understandably, by limiting the length of the mounting section to less than or equal to half the length of the expansion section, the stability of the monitoring column 4 within the placement hole 1 can be ensured, and the swaying and shaking of the monitoring column 4 due to vibration can be better controlled. The structural design is simple and reasonable.

[0034] In one embodiment, a flexible limiting ring 7 is provided between the hole wall at the opening end of the placement hole 1 and the outer wall of the monitoring column 4. The end of the monitoring column 4 near the base 2 extends out of the placement hole 1 and is used to install the three-component force accelerometer 6, and the end of the monitoring column 4 away from the base 2 is tapered from top to bottom. It can be understood that, as Figure 1 , Figure 3 and Figure 4 As shown, the flexible limiting ring 7 can seal the gap between the hole wall at the opening end of the placement hole 1 and the outer wall of the monitoring column 4, preventing water accumulation in the placement hole 1 and affecting the swaying of the monitoring column 4. Simultaneously, the flexible limiting ring 7 can be a rubber ring from the prior art, thus achieving a sealing effect without affecting the swaying of the monitoring column 4. Furthermore, the upper end of the monitoring column 4 extends beyond the placement hole 1, facilitating the installation of the three-component force accelerometer 6. The end of the monitoring column 4 furthest from the base 2 tapers from top to bottom, thus facilitating the insertion of the monitoring column 4 into the placement hole 1 and ensuring the stability of the monitoring column 4 after installation.

[0035] In one embodiment, a groove 8 for placing a control cabinet 3 is formed on the base 2. A through hole 5 is provided at the bottom of the groove 8 corresponding to the placement hole 1. A cover plate 9 for blocking the through hole 5 is hinged in the groove 8. A locking mechanism is provided on the cover plate 9 so that the cover plate 9 and the base 2 can be detachably connected. A sealing structure 10 is provided between the through hole 5 and the cover plate 9. Specifically, as shown... Figures 1 to 4 As shown, the top of the base 2 has a groove 8 for placing the control cabinet 3, and a cover plate 9 for blocking the through hole 5 is hinged in the groove 8. This can seal and block the through hole 5 and the placement hole 1, preventing monitoring personnel from stepping into the through hole 5 or the placement hole 1 and causing safety accidents, and facilitating the operation of the control cabinet 3. The hinge between the cover plate 9 and the groove 8 facilitates the later maintenance and repair of the three-part force accelerometer 6. The cover plate 9 is provided with a locking mechanism, which can be a mechanism used in the prior art to lock doors or door panels, thereby preventing the cover plate 9 from being accidentally opened and causing safety hazards. Furthermore, since a sealing structure 10 is provided between the through hole 5 and the cover plate 9, the through hole 5 and the placement hole 1 can be sealed a second time, further preventing water accumulation in the placement hole 1 and affecting the swaying of the monitoring column 4. At the same time, the sealing structure 10 can be a rubber sealing gasket, which can be used to seal the through hole 5 by elastically deforming the rubber sealing gasket after the cover plate 9 is locked.

[0036] In one embodiment, the control cabinet 3 is equipped with a control module for communicating with the three-part force accelerometer 6. Understandably, the three-part force accelerometer 6 sends monitoring signals to the control module, which then sends early warning signals to terminals such as a backend server, thereby preventing geological disasters and ensuring reliable operation.

[0037] In one embodiment, a fence 11 is provided on the base 2 along its circumference, a switch door 12 is movably connected to the fence 11, a door lock 14 is provided on the switch door 12, and an identification structure 13 is also provided on the fence 11. Specifically, as shown... Figure 1 As shown, by setting a fence 11 around the base 2, animals or non-monitoring personnel can be prevented from entering the groove 8 and operating or accidentally touching the control module in the control cabinet 3. Furthermore, by movably connecting a switch door 12 to the fence 11, and installing a lock 14 on the switch door 12, it is convenient for monitoring personnel to manage the invention. Simultaneously, a marking structure 13 is provided on the fence 11, serving as a safety reminder. In addition, a solar panel can be installed on the top of the fence 11, and a battery electrically connected to the solar panel can be installed inside the control cabinet 3. This not only eliminates the need for an external power source, making the invention environmentally friendly, safe, and reliable, but also provides shade and rain protection for components such as the base 2 and control cabinet 3, extending their service life. It also prevents water accumulation inside the groove 8, facilitating operation by monitoring personnel.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A micro-vibration monitoring device based on a three-component force accelerometer, installed at a predetermined location on the ground and used for micro-vibration monitoring in geological disaster monitoring and early warning, characterized in that, A placement hole (1) is provided at a preset position, including a base (2), a control cabinet (3) and a monitoring column (4). The control cabinet (3) is set on the base (2), and the base (2) is also provided with a through hole (5) communicating with the placement hole (1). The monitoring column (4) passes through the through hole (5) and is vertically set in the placement hole (1). The hole wall of the placement hole (1) is gradually widened from bottom to top. A three-part force accelerometer (6) is provided on the monitoring column (4) and communicates with the control cabinet (3). One end of the placement hole (1) is an open end and the other end is a closed end. The hole wall near the closed end of the placement hole (1) forms an installation section for abutting against the outer wall of the monitoring column (4). The hole wall near the open end is gradually expanded from bottom to top and forms an expansion section that is separated from the outer wall of the monitoring column (4). The length of the expansion section is greater than the length of the installation section. The length of the mounting section is less than or equal to half the length of the expansion section.

2. The micro-vibration monitoring device based on a three-component force accelerometer according to claim 1, characterized in that, A flexible limiting ring (7) is provided between the hole wall at the opening end of the placement hole (1) and the outer wall of the monitoring column (4). The end of the monitoring column (4) near the base (2) extends out of the placement hole (1) and is used to install the three-part force accelerometer (6). The end of the monitoring column (4) away from the base (2) is tapered from top to bottom.

3. The micro-vibration monitoring device based on a three-component force accelerometer according to claim 2, characterized in that, The base (2) has a groove (8) for placing the control cabinet (3). The bottom of the groove (8) is provided with a through hole (5) corresponding to the placement hole (1). A cover plate (9) for covering the through hole (5) is hinged in the groove (8). The cover plate (9) is provided with a locking mechanism so that the cover plate (9) and the base (2) can be detachably connected. A sealing structure (10) is provided between the through hole (5) and the cover plate (9).

4. A micro-vibration monitoring device based on a three-component force accelerometer according to claim 3, characterized in that, The control cabinet (3) is equipped with a control module for communicating with the three-force accelerometer (6).

5. A micro-vibration monitoring device based on a three-component force accelerometer according to claim 4, characterized in that, The base (2) is provided with a fence (11) along its circumference. A switch door (12) is movably connected to the fence (11). A door lock (14) is provided on the switch door (12). An identification structure (13) is also provided on the fence (11).

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