Magnetotelluric monitoring station

Abstract

The utility model belongs to the technical field of monitoring, and particularly discloses a magnetotelluric monitoring station, which comprises a vertical rod, a power supply system, a lightning protection system, a magnetotelluric monitoring system and a data receiving and transmitting system, and is characterized in that the power supply system is used for supplying power to the monitoring station; the vertical rod is mounted on the ground; the magnetotelluric monitoring system is used for monitoring magnetotelluric data and sending a monitoring result to the data receiving and transmitting system, and the data receiving and transmitting system receives the magnetotelluric data and then transmits the magnetotelluric data to the remote terminal; the lightning protection system comprises a lightning protection piece and a lightning protection grounding grid, the lightning protection piece is installed on the top of the vertical rod, the lightning protection piece and the lightning protection grounding grid are connected through a lightning conductor, and the lightning protection grounding grid is installed under the ground. And the lightning protection system is arranged, so that normal operation of the magnetotelluric monitoring system and general equipment can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of monitoring technology, and in particular relates to a magnetotelluric monitoring station. Background Technology

[0002] Magnetotelluric (MT) is a branch of geophysical electrical exploration, belonging to the frequency domain passive source method. It obtains the electrical structure at different subsurface depths by observing orthogonal electromagnetic field components, followed by data processing and inversion. This method has advantages such as large detection depth, lightweight design, and low cost for field operations. One of the key technologies of the MT method is to achieve a high-precision MT signal observation system. The measurement system enables wideband, multi-channel, low-noise, synchronous, and intelligent observation of electromagnetic field signals under field conditions. Existing MT observation systems are already quite mature in terms of multi-channel and synchronous capabilities.

[0003] A broadband intelligent long-period magnetotelluric measurement system (CN106772627B) is disclosed in the prior art. The measurement system consists of a data logger, electrodes, a triaxial inductive magnetic sensor, a triaxial fluxgate sensor, a solar panel, multiple sets of lead-acid batteries, and cables. The data logger is connected to the electrodes, the triaxial inductive magnetic sensor, and the triaxial fluxgate sensor via cables. The electrodes, as electric field sensors, are non-polarized electrodes that realize electric field signal observation. The triaxial inductive magnetic sensor consists of three magnetic sensors arranged in three directions: due north, due east, and vertically downward, to observe three-component high-frequency magnetic field signals. The fluxgate sensor integrates a triaxial coil to realize three-component low-frequency magnetic field observation. The data logger performs high-precision acquisition and storage of the voltage output signals of the electrodes, the triaxial inductive magnetic sensor, and the triaxial fluxgate sensor. The data logger is equipped with multiple sets of lead-acid batteries and connected to the solar panel, with the multiple sets of lead-acid batteries connected in parallel to power the data logger. The solar panel charges the multiple sets of lead-acid batteries.

[0004] Lightning protection systems are essential for the normal operation of electromagnetic station observation systems and general equipment. However, the aforementioned existing technologies do not include the installation of lightning protection systems and cannot provide lightning protection for the entire system. Utility Model Content

[0005] The purpose of this utility model is to provide a magnetotelluric monitoring station, which protects the magnetotelluric monitoring system from lightning by setting up a lightning protection system to ensure the operation of the equipment.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a magnetotelluric monitoring station, comprising a pole, a power supply system, a lightning protection system, a magnetotelluric monitoring system, and a data receiving and transmission system. The power supply system supplies power to the monitoring station; the pole is installed on the ground; the magnetotelluric monitoring system monitors magnetotelluric data and sends the monitoring results to the data receiving and transmission system; the data receiving and transmission system receives the magnetotelluric data and transmits the magnetotelluric data to a remote terminal; the lightning protection system includes a lightning arrester and a lightning protection grounding network; the lightning arrester is installed on the top of the pole, and the lightning arrester and the lightning protection grounding network are connected by a lightning protection wire; the lightning protection grounding network is installed below the ground surface; the magnetotelluric monitoring system includes four electrodes and three magnetic sensors respectively connected to the data receiving and transmission system; the three magnetic sensors are arranged in three directions: north-south, east-west, and perpendicular to the ground downwards; the four electrodes are divided into two groups, with the two groups perpendicular to each other and arranged in an L-shape or a cross shape.

[0007] Furthermore, an equipment box is fixed on the pole, and the data receiving and transmission system is installed inside the equipment box.

[0008] Furthermore, the power supply system includes a photovoltaic panel, a solar cell, a storage battery, and a charging controller. A first mounting frame is provided on the pole, and the photovoltaic panel and the charging controller are mounted on the first mounting frame. The solar cell is installed inside a protective box, which is installed below the ground surface. The charging controller is connected to both the photovoltaic panel and the solar cell. The solar cell is connected to the storage battery, and the storage battery is connected to the magnetotelluric monitoring system and the data receiving and transmission system.

[0009] Furthermore, the charging controller is connected to the solar cell via a charging cable, and the charging cable is provided with a shielding rod on its outer periphery.

[0010] Furthermore, a second mounting bracket is provided on the pole, and a camera device is mounted on the second mounting bracket. The camera device is connected to the power supply system and the data receiving and transmission system respectively.

[0011] Furthermore, the data receiving and transmission system includes a data acquisition host and an antenna, wherein the data acquisition host is connected to the power supply system, the magnetotelluric monitoring system, and the antenna, respectively.

[0012] Furthermore, the electrode is a non-polarizing electrode.

[0013] The beneficial effects of this technical solution are as follows:

[0014] ① This technical solution incorporates a lightning protection system to ensure the normal operation of the magnetotelluric monitoring system and general equipment. The solar cells are equipped with lightning protection to prevent high voltage or high current from entering the battery.

[0015] ②The power supply system of this technical solution includes a storage battery and a solar cell, which can ensure the long-term operation of the equipment.

[0016] ③This technical solution is equipped with a camera device, which can perform video monitoring of the monitoring site. Attached Figure Description

[0017] Figure 1 This is a connection diagram of the magnetotelluric monitoring station of this utility model;

[0018] Figure 2 This is a connection diagram of the power supply system;

[0019] Figure 3 This is a connection diagram of a lightning protection system;

[0020] Figure 4 A schematic diagram showing the connection between the data receiving and transmission system and the magnetotelluric monitoring system;

[0021] Figure 5 This is a schematic diagram of electrode installation. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] The reference numerals in the accompanying drawings include: pole 1, photovoltaic panel 2, charging controller 3, first mounting bracket 4, second mounting bracket 5, camera device 6, equipment box 7, antenna 8, lightning protection device 9, lightning protection grounding network 10, protective box 11, solar cell 12, shielding rod 13, magnetic sensor 14, electrode 15, data acquisition host 16, electrode lead 17, plastic sleeve 18, high-quality fine soil 19, stabilizer 20, in-situ soil 21, external medium of the electrode pit 22.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The basic implementation examples are as follows: Figure 1-5 As shown: A magnetotelluric monitoring station includes pole 1, a power supply system, a lightning protection system, a magnetotelluric monitoring system, and a data receiving and transmission system. The power supply system provides power to the monitoring station. Pole 1 is installed on the ground. The magnetotelluric monitoring system monitors magnetotelluric data and sends the monitoring results to the data receiving and transmission system. After receiving the magnetotelluric data, the data receiving and transmission system transmits the magnetotelluric data to a remote terminal.

[0026] The data receiving and transmission system includes a data acquisition host 16 and an antenna 8. The data acquisition host 16 is connected to the power supply system, the magnetotelluric monitoring system, and the antenna 8. An equipment box 7 is fixed on the pole 1, and the data receiving and transmission system is installed inside the equipment box 7, where power is also distributed. The top of the equipment box 7 has mounting holes for installing the antenna 8.

[0027] The lightning protection system includes a lightning arrester 9 and a lightning protection grounding network 10. The lightning arrester 9 uses a copper-made special lightning rod (or equivalent product), and the resistance of the lightning protection grounding network 10 is less than 4Ω. The lightning arrester 9 is installed on the top of the pole 1, and the lightning arrester 9 and the lightning protection grounding network 10 are connected by a lightning protection wire. The lightning protection grounding network 10 is installed below the ground surface. The pole 1 is a hollow pole, and the lightning protection wire passes through the pole 1 and connects to the lightning protection grounding network 10.

[0028] The magnetotelluric monitoring system includes four electrodes 15 and three magnetic sensors 14, each connected to the main data acquisition unit 16. The electrodes 15 are non-polarized electrodes, specifically Pb-PbCl2 solid non-polarized electrodes. The burial depth of the electrodes 15 should be no less than 1.5–2.0 m. Different burial methods should be adopted according to the soil conditions of different sites, referring to DB / T 18.2-2006. The burial method of the electrodes 15 in this embodiment is as follows: Figure 5 As shown. The four electrodes 15 are arranged in pairs, with the two pairs perpendicular to each other and forming an L-shape or a cross shape. The two orthogonal orientations are along geographic north and perpendicular to geographic north, respectively. In site conditions where a symmetrical quadrupole layout cannot be achieved, an asymmetrical quadrupole or "L"-shaped layout can be used, but the two directions must be orthogonal. The distance between the electrodes 15 in each orientation is 25-50m, depending on the size of the site. The three magnetic sensors 14 are arranged along the north-south, east-west, and perpendicular to the ground downwards, respectively.

[0029] The power supply system includes photovoltaic panels 2, solar cells 12, a storage battery, and a charging controller 3. A first mounting frame 4 is provided on the pole 1, and the photovoltaic panels 2 and the charging controller 3 are mounted on the first mounting frame 4. The solar cells 12 are installed inside a protective box 11, which is installed below the ground surface. The charging controller 3 is connected to both the photovoltaic panels 2 and the solar cells 12. The solar cells 12 are connected to the storage battery, which is connected to the magnetotelluric monitoring system, the data receiving and transmission system, and the camera device 6. The charging controller 3 and the solar cells 12 are connected via a charging cable, which is surrounded by a shielding rod 13. The storage battery is installed inside the protective box 11 or the equipment box 7.

[0030] The pole 1 is also equipped with a second mounting bracket 5, on which a camera device 6 is mounted. The camera device 6 is connected to the power supply system and the data receiving and transmission system.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A magnetotelluric monitoring station, characterized in that: The system includes a pole (1), a power supply system, a lightning protection system, a magnetotelluric monitoring system, and a data receiving and transmission system. The power supply system is used to supply power to the monitoring station. The pole (1) is installed on the ground. The magnetotelluric monitoring system is used to monitor magnetotelluric data and send the monitoring results to the data receiving and transmission system. After receiving the magnetotelluric data, the data receiving and transmission system transmits the magnetotelluric data to a remote terminal. The lightning protection system includes a lightning arrester (9) and a lightning protection grounding network (10). The lightning arrester (9) is installed on the top of the pole (1). The lightning arrester (9) and the lightning protection grounding network (10) are connected by a lightning protection wire. The lightning protection grounding network (10) is installed below the ground surface. The magnetotelluric monitoring system includes four electrodes (15) and three magnetic sensors (14) that are respectively connected to the data receiving and transmission system. The three magnetic sensors (14) are arranged in three directions: north-south, east-west, and perpendicular to the ground. The four electrodes (15) are divided into two groups, which are perpendicular to each other and form an L-shape or a cross shape.

2. The magnetotelluric monitoring station according to claim 1, characterized in that: An equipment box (7) is fixed on the pole (1), and the data receiving and transmission system is installed inside the equipment box (7).

3. The magnetotelluric monitoring station according to claim 2, characterized in that: The power supply system includes a photovoltaic panel (2), a solar cell (12), a storage battery, and a charging controller (3). A first mounting frame (4) is provided on the pole (1), and the photovoltaic panel (2) and the charging controller (3) are mounted on the first mounting frame (4). The solar cell (12) is installed in a protective box (11), which is installed below the ground surface. The charging controller (3) is connected to the photovoltaic panel (2) and the solar cell (12) respectively. The solar cell (12) is connected to the storage battery, and the storage battery is connected to the magnetotelluric monitoring system and the data receiving and transmission system.

4. The magnetotelluric monitoring station according to claim 3, characterized in that: The charging controller (3) is connected to the solar cell (12) via a charging cable, and the outer periphery of the charging cable is provided with a shielding rod (13).

5. The magnetotelluric monitoring station according to claim 1, characterized in that: The pole (1) is also provided with a second mounting bracket (5), on which a camera device (6) is installed. The camera device (6) is connected to the power supply system and the data receiving and transmission system respectively.

6. The magnetotelluric monitoring station according to claim 1, characterized in that: The data receiving and transmission system includes a data acquisition host (16) and an antenna (8). The data acquisition host (16) is connected to the power supply system, the magnetotelluric monitoring system and the antenna (8) respectively.

7. The magnetotelluric monitoring station according to claim 1, characterized in that: The electrode (15) is a non-polarizable electrode (15).

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