A surface and in-hole combined detection seismic monitoring device, system and method

Abstract

This invention provides a seismic monitoring device, system, and method for joint surface and cave detection, including multiple node acquisition devices and a control master station. The control master station comprises three units, deployed at the surface, cave entrance, and inside the tunnel, respectively. Each control master station is connected to a first connecting antenna, a second connecting antenna, and a positioning module. The control master station provides time synchronization signals to all node acquisition devices in the corresponding area through the positioning module, broadcasts antenna signals and time information to each node acquisition device in the corresponding area through the first connecting antenna, achieving real-time time synchronization and control of each node acquisition device, and broadcasts communication signals to the corresponding area through the second connecting antenna, achieving real-time data transmission and acquisition. This invention can realize joint surface and cave seismic wave acquisition and real-time data transmission.

Description

Technical Field

[0001] This invention belongs to the field of advanced geological prediction technology for tunnel excavation, specifically relating to a seismic monitoring device, system, and method for joint surface and tunnel detection. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With the widespread application of full-face tunnel boring machines (TBMs) in underground tunnel construction, advanced prediction of adverse geological conditions has become crucial.

[0004] In recent years, geophysical advance prediction methods have been increasingly widely used in tunnel boring machine (TBM) construction. Among them, seismic wave methods have become one of the most widely used advance prediction methods in TBM construction due to their advantages such as high interface imaging accuracy and long detection distance. With the development of seismic wave methods, joint acquisition and inversion of surface and tunnel seismic information has become a highly efficient detection method. However, traditional nodal seismic wave acquisition equipment can only acquire data at the surface or inside the tunnel, and cannot achieve joint acquisition of surface and tunnel data. Moreover, traditional seismic wave acquisition equipment cannot transmit data in real time, nor can it achieve real-time control of acquisition nodes. At the same time, it is limited by real-time timing signal positioning; if the timing signal is interfered with, the equipment cannot operate.

[0005] Currently, there are still some difficulties in achieving joint acquisition of seismic data from the surface and inside caves:

[0006] The environment inside the cave is complex. Traditional seismic acquisition equipment requires GPS positioning to achieve time synchronization, but the depth of the cave makes it difficult to receive time synchronization signals, thus hindering the time synchronization of acquisition equipment inside the cave. Furthermore, the limited space inside the cave and the long distance between the equipment on the surface also present challenges in achieving real-time data transmission.

[0007] In summary, to achieve joint data acquisition from the surface and inside the cave, the following issues need to be addressed: receiving time synchronization signals inside the cave and transmitting real-time data from equipment both on the surface and inside the cave. Summary of the Invention

[0008] To address the aforementioned problems, this invention proposes a seismic monitoring device, system, and method for joint surface and cave detection. This invention enables joint acquisition and real-time data transmission of seismic waves from the surface and caves.

[0009] According to some embodiments, the present invention adopts the following technical solution:

[0010] A seismic monitoring device for combined surface and cave detection includes node acquisition devices installed on the surface and / or inside the cave. The node acquisition devices include a node cover, a control circuit board, a node housing, and coupling terminals, wherein:

[0011] The node cover is detachably connected to the node housing, the control circuit board is housed inside the node housing, and the coupling terminal is located at the lower end of the node housing, protruding out of the housing to be inserted into the ground surface and / or the hole wall to achieve strong coupling;

[0012] A vibration detection sensor is installed inside the node housing. The vibration detection sensor is connected to the control circuit board, which is used to collect, analyze and transmit data.

[0013] The node cover is equipped with a level to ensure that the node acquisition device is placed horizontally.

[0014] As an alternative implementation, the node cover is also provided with a heat sink, a charging port and a display panel. The display panel is used to display the working status of the control circuit board, the charging port is used to charge the energy storage device, and the heat sink has multiple heat dissipation holes / vents that are connected to the inside of the node housing.

[0015] As an alternative implementation, the control circuit board includes a communication module, a digital circuit board, an analog circuit board, and an antenna board. The communication module is used for real-time signal transmission, the digital circuit board is used for data analysis and extraction, the analog circuit board is electrically connected to the vibration detection sensor to realize data acquisition, and the antenna board is used to realize antenna broadcast communication.

[0016] As an alternative implementation, an energy storage device is connected to the control circuit board, which is used to power the entire node acquisition device.

[0017] As an alternative implementation, the node housing includes a fixed cover and a housing, the fixed cover and the housing are connected and located on the upper side of the housing, the fixed cover is provided with a plurality of connection positions for detachable connection with the node cover, and the housing contains the vibration detection sensor and also contains an energy storage device.

[0018] A seismic monitoring system for joint surface and cave detection includes multiple node acquisition devices and a control master station. The control master station comprises three units, respectively deployed at the surface, cave entrance, and tunnel. Each control master station is connected to a first connecting antenna, a second connecting antenna, and a positioning module. The control master station provides time synchronization signals to all node acquisition devices in the corresponding area through the positioning module, broadcasts antenna signals and time information to each node acquisition device in the corresponding area through the first connecting antenna, and realizes real-time time synchronization and control of each node acquisition device. The control master station broadcasts communication signals to the corresponding area through the second connecting antenna, realizing real-time data transmission and acquisition.

[0019] As an alternative implementation, a host computer is also included, which is connected to each control master station.

[0020] As an alternative implementation, the control master station deployed on the ground is used to communicate with the node acquisition devices deployed on the ground, the control master station deployed in the tunnel is used to communicate with the node acquisition devices deployed in the tunnel, and the three control master stations communicate with each other.

[0021] As an alternative implementation, the control master station includes a housing that houses a control circuit, a timer, and an energy storage element. The housing is equipped with a positioning port, a first connecting antenna, a second connecting antenna, an optical fiber port, a charging port, and a switch. The switch is used to control the operation of the control circuit, the optical fiber port is used to connect to other control master stations via optical fiber, the positioning port is used to connect to a positioning module, the charging port is used to charge the energy storage element, the control circuit is used to control the operation of the control master station, and the timer is used to record the current time.

[0022] The working method of the above system includes the following steps:

[0023] When collecting rock-breaking data from the TBM, multiple node acquisition devices are simultaneously deployed on the ground surface ahead of the TBM and inside the tunnel. One control master station is deployed on the ground surface and at the tunnel entrance, and a third control master station is deployed inside the tunnel.

[0024] The three master stations are remotely connected via a host computer. The control master station on the ground obtains the current time through the positioning module and broadcasts it to the node acquisition device on the ground through the first connecting antenna. The control master station at the entrance of the cave obtains the current time through the positioning module and transmits the current time to the control master station inside the cave through the fiber optic interface. The control master station inside the cave broadcasts the time synchronization signal to the node acquisition device inside the cave through the first connecting antenna.

[0025] Once the control master station detects the time synchronization signal, the timer in the internal circuit of the control master station starts to work, so as to realize the time synchronization of the node acquisition device without relying on the time synchronization signal;

[0026] The first connection antenna broadcast signal contains the work instructions issued by the host computer to the acquisition node, realizing real-time control of the node acquisition device. The communication module in the node acquisition device is connected to the communication module of the control master station, so that the acquired data is transmitted to the host computer in real time through the control master station.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] This invention achieves distributed data acquisition and joint acquisition of seismic waves from the surface and inside the cave by placing a control master station on the surface, at the cave entrance, and inside the cave, and deploying multiple node acquisition devices (hereinafter referred to as acquisition nodes) on the surface and inside the cave.

[0029] This invention controls the main station to connect to the positioning device, which broadcasts the data to each acquisition node via an antenna. It also solves the problem of not being able to obtain time synchronization signals inside the cave. After the main station recognizes the time synchronization signal, the internal circuit timer starts working. At this time, the acquisition nodes can achieve time synchronization without relying on the time synchronization signal, thus realizing real-time transmission of seismic wave data from the surface to the cave.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0032] Figure 1 This is a schematic diagram of the control master station structure according to one embodiment;

[0033] Figure 2 This is a schematic diagram of a data acquisition node structure according to one embodiment;

[0034] Figure 3 This is a schematic diagram of a node capping structure according to one embodiment;

[0035] Figure 4 This is a schematic diagram of a control circuit board structure according to one embodiment;

[0036] Figure 5 A schematic diagram of a node housing according to one embodiment;

[0037] Figure 6 This is a schematic diagram illustrating the working principle of a system according to one embodiment. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Example 1

[0042] A joint seismic wave acquisition system for the surface and caves includes three identical master control stations and multiple acquisition nodes. Multiple acquisition nodes acquire data simultaneously, and GPS time synchronization ensures the consistency of data acquisition time across all nodes, enabling joint acquisition of surface and cave data.

[0043] Control master station, such as Figure 1 As shown, the system includes a housing containing a control circuit, a timer, and an energy storage element (not shown). The housing also features a GPS port 1, a 2.4G antenna 2, a 5G antenna 3, a fiber optic port 4, a charging port 5, and a switch 6. The control master station connects to an external positioning module via the GPS port 1 to provide GPS signals to all nodes. The 2.4G antenna broadcasts 2.4G signals and GPS information to the node deployment area, enabling real-time time synchronization and control of individual data acquisition nodes. The 5G antenna broadcasts 5G WiFi signals to the node deployment area, enabling real-time data transmission and acquisition.

[0044] Fiber optic port 4 is used to connect to other control master stations via fiber optic cables. Charging port 5 is used to charge the energy storage components. Switch 6 is used to control the operation of the control circuit and timer. The control circuit is used to control the operation of components such as the timer, 2.4G antenna 2, and 5G antenna 3.

[0045] The control circuit can be achieved using existing technology, and will not be elaborated upon here.

[0046] A single acquisition node, such as Figure 2 As shown, it includes a node cover 7, a control circuit board 8, a node housing 9, and a coupling terminal 10. The control circuit 8, battery, sensor, etc. are placed inside the node cover 7 and the node housing 9. When in use, the coupling terminal 10 is inserted into the ground surface to detect the node, so that the node is strongly coupled to the ground.

[0047] The node cap 7 and the node housing 9 are detachably connected.

[0048] like Figure 3 As shown, the node cover 7 is equipped with a heat sink 11, a charging port 12, a display panel 13, and a level 14. The display panel 13 displays the working status of the data acquisition node, and the level 14 ensures that the node is placed horizontally. The charging port 12 is used to charge the battery, and the heat sink 11 is used to dissipate heat from the inside of the node housing 9. The heat sink 11 includes multiple heat dissipation vents or holes.

[0049] like Figure 4 As shown, the control circuit board mainly consists of a WiFi module 15, a digital circuit board 16, an analog circuit board 17, and an antenna board 18. The WiFi module 15 is mainly involved in real-time signal transmission, the digital circuit board 16 mainly realizes data analysis and extraction, the analog circuit board 17 is connected to the sensor and mainly realizes data acquisition, and the antenna board 18 mainly realizes 2.4G broadcast communication.

[0050] like Figure 5 As shown, the node housing 9 mainly consists of a fixed cover 19, a battery 20, and an acceleration displacement sensor 21. The fixed cover 19 is provided with several cavities to accommodate the battery 20 and the acceleration displacement sensor 21. The fixed cover 19 presses the battery 20 and the acceleration displacement sensor 21 together. The battery 20 supplies power to the entire node during data acquisition, while the acceleration displacement sensor 21 collects vibration signals.

[0051] like Figure 6 As shown, when collecting rock-breaking data from the TBM, multiple data acquisition nodes are simultaneously deployed on the surface ahead of the TBM and inside the tunnel. One control master station is deployed on the surface and at the tunnel entrance, and a third control master station is deployed inside the tunnel. A laptop computer connects to the three master stations via WiFi. The surface master station obtains the current time through its positioning module and broadcasts it to the surface data acquisition nodes via a 2.4G antenna. The master station at the tunnel entrance also obtains the current time through its positioning module and transmits the GPS time to the control master station inside the tunnel via a fiber optic interface. The control master station inside the tunnel broadcasts the GPS signal to the data acquisition nodes inside the tunnel via its 2.4G antenna, thus solving the problem of not being able to obtain GPS signals inside the tunnel. Furthermore, when the master station recognizes the GPS signal, its internal circuit timer starts working, enabling time synchronization of the data acquisition nodes without relying on GPS signals. Simultaneously, the 2.4G broadcast signal contains operating instructions from the host computer to the data acquisition nodes, achieving real-time control of the data acquisition nodes. The WiFi module inside the data acquisition node is connected to the WiFi module of the control master station, enabling the collected data to be transmitted from the data acquisition node to the host computer in real time through the control master station.

[0052] Example 2

[0053] In this embodiment, the GPS node time synchronization in Embodiment 1 is replaced with the domestic Beidou positioning system for node time synchronization.

[0054] The data collection nodes in this embodiment can collect data individually on the surface or inside the cave, or they can collect data in combination.

[0055] Example 3

[0056] In this embodiment, the appearance of the acquisition node in the above embodiment is changed to another shape, no longer a column, but a cube or other shapes.

[0057] Example 4

[0058] In this embodiment, the 2.4G broadcast and 5G WiFi used in the above embodiments are replaced with signals of any frequency band.

[0059] The power supply for the data acquisition node used in this embodiment is a 4.2V rechargeable lithium battery. Of course, in other embodiments, other power supply devices can be used instead.

[0060] The sensor used in the above embodiments is an acceleration-displacement sensor. In other embodiments, it can be replaced with a velocity sensor or other sensors that can detect vibration.

[0061] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0064] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art without creative effort within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A seismic monitoring system that combines surface and cave detection, characterized in that, The control master station consists of three units, which are respectively deployed on the ground, at the entrance, and inside the tunnel. Each control master station is connected to a first connecting antenna, a second connecting antenna, and a positioning module. The control master station provides time synchronization signals to all node acquisition devices in the corresponding area through the positioning module, broadcasts antenna signals and time information to each node acquisition device in the corresponding area through the first connecting antenna, and realizes real-time time synchronization and control of each node acquisition device. It also broadcasts communication signals to the corresponding area through the second connecting antenna, realizing real-time data transmission and acquisition. The control master station includes a housing, which houses a control circuit, a timer, and an energy storage element. The housing is equipped with a positioning port, a first connecting antenna, a second connecting antenna, an optical fiber port, a charging port, and a switch. The switch is used to control the operation of the control circuit. The optical fiber port is used to connect to other control master stations via optical fiber. The positioning port is used to connect to a positioning module. The charging port is used to charge the energy storage element. The control circuit is used to control the operation of the control master station. The timer is used to record the current time. The system employs a combined surface and cave-based seismic monitoring device, comprising node acquisition devices installed on the surface and / or inside the cave. Each node acquisition device includes a node cover, a control circuit board, a node housing, and coupling terminals, wherein: The node cover is detachably connected to the node housing, the control circuit board is housed inside the node housing, and the coupling terminal is located at the lower end of the node housing, protruding out of the housing to be inserted into the ground surface and / or the hole wall to achieve strong coupling; A vibration detection sensor is installed inside the node housing. The vibration detection sensor is connected to the control circuit board, which is used to collect, analyze and transmit data. The node cover is equipped with a level to ensure that the node acquisition device is placed horizontally.

2. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, It also includes a host computer, which is connected to each control master station.

3. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, The control master station deployed on the ground is used to communicate with the node acquisition devices deployed on the ground, the control master station deployed in the tunnel is used to communicate with the node acquisition devices deployed in the tunnel, and the three control master stations communicate with each other.

4. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, The control master station includes a housing, which houses a control circuit, a timer, and an energy storage element. The housing is equipped with a positioning port, a first connecting antenna, a second connecting antenna, an optical fiber port, a charging port, and a switch. The switch is used to control the operation of the control circuit, the optical fiber port is used to connect to other control master stations via optical fiber, the positioning port is used to connect to a positioning module, the charging port is used to charge the energy storage element, the control circuit is used to control the operation of the control master station, and the timer is used to record the current time.

5. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, The node cover is also provided with a heat sink, a charging port and a display panel. The display panel is used to display the working status of the control circuit board, the charging port is used to charge the energy storage device, and the heat sink has multiple heat dissipation holes / vents that are connected to the inside of the node housing.

6. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, The control circuit board includes a communication module, a digital circuit board, an analog circuit board, and an antenna board. The communication module is used for real-time signal transmission, the digital circuit board is used for data analysis and extraction, the analog circuit board is electrically connected to the vibration detection sensor to realize data acquisition, and the antenna board is used to realize antenna broadcast communication.

7. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, An energy storage device is connected to the control circuit board, which is used to power the entire node acquisition device.

8. The earthquake monitoring system for combined surface and cave detection as described in claim 1, characterized in that, The node housing includes a fixed cover and a housing, which are connected and located on the upper side of the housing. The fixed cover has several connection positions for detachable connection with the node cover. The housing contains the vibration detection sensor and also houses an energy storage device.

9. A method of operating the system based on any one of claims 1-8, characterized in that, Includes the following steps: When collecting rock-breaking data from the TBM, multiple node acquisition devices are simultaneously deployed on the ground surface ahead of the TBM and inside the tunnel. One control master station is deployed on the ground surface and at the tunnel entrance, and a third control master station is deployed inside the tunnel. The three master stations are remotely connected via a host computer. The control master station on the ground obtains the current time through the positioning module and broadcasts it to the node acquisition device on the ground through the first connecting antenna. The control master station at the entrance of the cave obtains the current time through the positioning module and transmits the current time to the control master station inside the cave through the fiber optic interface. The control master station inside the cave broadcasts the time synchronization signal to the node acquisition device inside the cave through the first connecting antenna. Once the control master station detects the time synchronization signal, the timer in the internal circuit of the control master station starts to work, so as to realize the time synchronization of the node acquisition device without relying on the time synchronization signal; The first connection antenna broadcast signal contains the work instructions issued by the host computer to the acquisition node, realizing real-time control of the node acquisition device. The communication module in the node acquisition device is connected to the communication module of the control master station, so that the acquired data is transmitted to the host computer in real time through the control master station.

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