Marine electromagnetic acquisition equipment

Abstract

The present application provides a marine electromagnetic acquisition device, which includes a submerged coupling frame and multiple field signal collectors. The submerged coupling frame includes multiple connection structures, which are staggered and distributed in space and connected to each other to form a frame structure. The frame structure is used to be suspended in the marine field to be detected. At least part of the connection structure has a built-in field signal collector, and one connection structure has at least one built-in field signal collector. The field signal collector is used to collect field signals in the marine field to be detected. Compared with the prior art, the marine electromagnetic acquisition device can collect field signals in seawater in multiple directions and angles at any water depth, thereby improving the detection accuracy and adaptability of the marine electromagnetic acquisition device, and the marine electromagnetic acquisition device can be stably suspended in the seawater between the seabed and the sea surface, avoiding the phenomenon that the marine electromagnetic acquisition device is overturned, damaged, buried, etc. due to complex seabed terrain and obstacles.

Description

Technical Field

[0001] The present application belongs to the field of ocean detection technology, and more specifically, to an ocean electromagnetic acquisition device. Background Art

[0002] At present, the structure of the commonly used fixed marine electromagnetic collection equipment includes a base, on which are installed a number of pressure-resistant floating objects or other buoyant objects, and a high-density counterweight under the base. The base can be installed with magnetic field sensors, collection and control circuits, batteries, positioning instruments and other equipment. In addition, the base is also equipped with a number of electrode arms with a certain arm span extending outward to measure the electric field between the end points of the two arms.

[0003] When the fixed ocean electromagnetic collection equipment is deployed in the ocean, it is put into the seawater, and slowly sinks to the seabed under the action of the gravity of the counterweight, and starts to record the magnetic field and electric field data. When the collection is completed, an acoustic wave signal is sent to the ocean electromagnetic collection equipment located on the seabed to trigger the acoustic wave releaser to separate the base from the counterweight, so that the fixed ocean electromagnetic collection equipment floats to the water surface under the action of the buoyancy of the floating object, and the recovery is completed.

[0004] At present, since fixed marine electromagnetic acquisition equipment is mainly bottom-mounted, that is, the marine electromagnetic acquisition equipment needs to sink to the seabed when collecting data. With the above solution, the deployment depth of fixed marine electromagnetic acquisition equipment is limited due to the influence of floating objects and the compressive strength of the acquisition equipment. If the landing point is located on a steep seabed terrain or there are hydrothermal vents, the fixed marine electromagnetic acquisition equipment may overturn, the electrode arm may be damaged, the acquisition station may be stuck or buried, etc., resulting in the fixed marine electromagnetic acquisition equipment being unable to work normally or being unable to be recovered smoothly; moreover, the complex seabed terrain is not conducive to the accuracy of the magnetic field and electric field data collected by the fixed marine electromagnetic acquisition equipment. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a marine electromagnetic acquisition device to solve the technical problems in the prior art that the marine electromagnetic acquisition device cannot work normally when in a complex seabed environment and the collected data is not accurate enough.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a marine electromagnetic acquisition device, which is characterized by comprising:

[0007] The coupling frame includes a plurality of connection structures, which are staggered and distributed in space and connected to each other to form a frame structure, and the frame structure is used to be suspended in the ocean field to be detected;

[0008] A plurality of field signal collectors are built in at least some of the connection structures, and at least one field signal collector is built in one of the connection structures. The field signal collectors are used to collect field signals in the ocean field to be detected.

[0009] In one embodiment, the coupling frame has a plurality of connection vertices, and each of the connection vertices radiates at least a plurality of the connection structures; among the plurality of connection structures radiated from the same connection vertex, the angle between any two of the connection structures is less than or equal to 90°.

[0010] In one embodiment, among the plurality of connection structures radiating from the same connection vertex, the included angles of any two of the connection structures are equal, and the lengths of any two of the connection structures are equal.

[0011] In one embodiment, the coupling frame has four connection vertices, and each connection vertex radiates three connection structures; among the three connection structures radiated from the same connection vertex, the angle between any two connection structures is 60°.

[0012] In one embodiment, at least one of the field signal collectors is built into two adjacent connection structures, and the two adjacent connection structures where the field signal collectors are located are arranged at an angle in space, so that the two field signals collected by the field signal collectors in the two adjacent connection structures all generate components in the X, Y, and Z directions of a three-dimensional rectangular coordinate system.

[0013] In one embodiment, the multiple field signal collectors include three magnetic field signal collectors, and the three connecting structures where the three magnetic field signal collectors are located radiate from the same connecting vertex of the sinking coupling frame; among the three connecting structures radiated from the same connecting vertex, one of the connecting structures is set at an angle to the plane where the other two connecting structures are located.

[0014] In one embodiment, the coupling frame has four connection vertices, and each connection vertex radiates three connection structures;

[0015] Each of the three connection structures radiating from one of the connection vertices has a built-in magnetic field signal collector;

[0016] The multiple field signal collectors also include an electric field signal collector, and any two of the other three connection vertices are connected to a connection structure, and at least one electric field signal collector is built in each of the three connection structures.

[0017] In one embodiment, the coupling frame has four connection vertices, and each connection vertex radiates three connection structures;

[0018] Each of the three connection structures radiating from one of the connection vertices has a built-in magnetic field signal collector;

[0019] The number of the three electric field signal collectors is three, and a connection structure is connected between any two of the other three connection vertices, and each of the three connection structures has an electric field signal collector built in it.

[0020] In one embodiment, the plurality of field signal collectors further include three electric field signal collectors;

[0021] The coupling frame has four connection vertices, and each connection vertex radiates three connection structures;

[0022] Among the three connection structures radiated from one of the connection vertices, any two of the three connection structures are respectively built with a magnetic field signal collector, and another connection structure is built with an electric field signal collector;

[0023] A connection structure is connected between any two of the other three connection vertices. Among the three connection structures, two of the connection structures each have an electric field signal collector built in, and another connection structure has a magnetic field signal collector built in. The connection structure with the magnetic field signal collector built in is arranged at an angle to the plane where the other two connection structures with the magnetic field signal collectors built in are located.

[0024] In one embodiment, the sinking coupling frame has a plurality of connection vertices, each of which is provided with a floating object, and both ends of the length of each connection structure are respectively connected to two adjacent floating objects.

[0025] In one embodiment, the marine electromagnetic acquisition equipment also includes at least one releaser, which has two opposite connecting ends, one of which is used to connect to a sinking coupling frame, and the other connecting end is used to connect to an anchor, and the releaser is used to cut off the connection between the sinking coupling frame and the anchor.

[0026] In one embodiment, the marine electromagnetic collection equipment also includes a float and two releasers respectively connected to the float, wherein one end of one releaser away from the float is used to connect to a sinking coupling frame, and the other end of the releaser away from the float is used to connect to an anchor.

[0027] In one embodiment, the marine electromagnetic acquisition device further includes a power supply, and the power supply is installed in the connecting mechanism with the field signal collector built in, and the field signal collector is electrically connected to the power supply.

[0028] In one embodiment, at least a portion of the connection structure has at least one of a hydrophone, a thermometer, a salinity meter, a hydroacoustic positioning transponder, a posture sensor, and an acceleration sensor built into it.

[0029] The beneficial effects of the marine electromagnetic acquisition equipment provided by this application are:

[0030] Compared with the prior art, the marine electromagnetic acquisition equipment of the present application has a plurality of connection structures in the submerged coupling frame, and the plurality of connection structures are staggered and interconnected in space, and a field signal collector is built into some of the connection structures, so that the marine electromagnetic acquisition equipment can collect field signals in seawater in multiple directions and angles, thereby improving the detection accuracy and adaptability of the marine electromagnetic acquisition equipment;

[0031] When collecting field signals in seawater, the submerged coupling frame is stably suspended in the seawater at any depth between the seabed and the sea surface, avoiding the complex seabed terrain and obstacles that may cause the marine electromagnetic collection equipment to overturn, be damaged, or be buried. At the same time, it prevents the complex seabed terrain and obstacles from interfering with the collected data, further improving the accuracy of data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 A schematic diagram of the structure of the marine electromagnetic acquisition equipment provided in the embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of a sink coupling frame provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the structure of a coupling frame provided in one embodiment of the present application;

[0036] Figure 4 A schematic diagram of the structure of a coupling frame provided in one embodiment of the present application;

[0037] Figure 5 A schematic diagram of the structure of a coupling frame provided in one embodiment of the present application;

[0038] Figure 6A schematic diagram of the structure of a sinking coupling frame provided in one embodiment of the present application.

[0039] Among them, the reference numerals in the figure are:

[0040] 1. Sinking coupling frame; 2. Connection structure; 3. Field signal collector; 4. Magnetic field signal collector; 5. Electric field signal collector; 6. Floating object; 7. Releaser; 8. Rope; 9. Anchor; 10. Auxiliary floating object. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] Please also read Figure 1 and Figure 2 , the marine electromagnetic acquisition equipment provided in the embodiment of the present application is now described.

[0046] The marine electromagnetic acquisition equipment provided in the embodiment of the present application includes a coupling frame 1 and a plurality of field signal collectors 3.

[0047] The coupling frame 1 includes a plurality of connection structures 2, which are staggered in space and connected to each other to form a frame structure, and the frame structure is used to be suspended in the ocean field to be detected. At least some of the connection structures 2 are built with field signal collectors 3, and at least one field signal collector 3 is built in one connection structure 2, and the field signal collector 3 is used to collect field signals in the ocean field to be detected.

[0048] Compared with the prior art, the marine electromagnetic acquisition equipment provided by the present application has a submerged coupling frame 1 with multiple connection structures 2, and the multiple connection structures 2 are staggered and interconnected in space, and at least one field signal collector 3 is built in some of the connection structures 2, so that the marine electromagnetic acquisition equipment can collect field signals in seawater in multiple directions and angles, thereby improving the detection accuracy and adaptability of the marine electromagnetic acquisition equipment; when collecting field signals in seawater, the submerged coupling frame 1 is stably suspended in seawater at any depth between the seabed and the sea surface, avoiding the phenomenon of overturning, damage, burial, etc. of the marine electromagnetic acquisition equipment caused by complex seabed terrain and obstacles, and at the same time preventing the complex seabed terrain and obstacles from interfering with the collected data, further improving the accuracy of data collection.

[0049] Specifically, in this implementation, a plurality of connection structures 2 are staggered and distributed in space and connected to each other to form a frame structure, and any two adjacent connection structures 2 are arranged at an angle, that is, the angle between any two adjacent connection structures 2 can be one of an acute angle, a right angle or an obtuse angle, and the length of the connection structure 2 can be selected as needed. When collecting field signals in seawater, the coupling frame 1 can be connected to the coupling frame 1 through a rope 8, and the coupling frame 1 can be placed in seawater at a preset depth, so that the marine electromagnetic collection equipment can be suspended in the seawater at a certain height from the seabed.

[0050] Since the multiple connection structures 2 are staggered in space and any two adjacent connection structures 2 are arranged at an angle, the marine electromagnetic acquisition device can collect field signals in seawater in multiple directions and angles. After the acquisition is completed, a spatial coordinate system with three directions of X, Y, and Z is established, and the field signal data of different directions and angles collected by multiple field signal collectors 3 are projected in the three directions of X, Y, and Z respectively by orthogonal projection, and accumulated, so as to calculate the strength of the field signal in the three directions of X, Y, and Z.

[0051] At the same time, the marine electromagnetic acquisition equipment can be suspended in the sea water at a certain height from the seabed, avoiding the complex terrain and obstacles on the seabed that may cause the marine electromagnetic acquisition equipment to overturn, be damaged, or be buried, while preventing the complex terrain and obstacles on the seabed from interfering with the collected data.

[0052] In one embodiment of the present application, the coupling frame 1 has multiple connection vertices, each connection vertex radiates at least a plurality of connection structures 2; among the plurality of connection structures 2 radiated from the same connection vertex, the angle between any two connection structures 2 is less than or equal to 90°.

[0053] Specifically, in the embodiments of this application, please refer to Figures 1 to 3 The coupling frame 1 is a regular tetrahedron structure, including four vertices, and the number of connection structures 2 is six. Three connection structures 2 radiate from each connection vertex; among the three connection structures 2 radiated from the same connection vertex, the angle between any two connection structures 2 is 60°.

[0054] The coupling frame 1 is a regular tetrahedron structure, which makes the coupling frame 1 stable, strong in impact resistance and not easy to deform, so that the marine electromagnetic acquisition equipment can be suspended in deeper sea water. By connecting a rope 8 to one of the vertices of the coupling frame 1 and placing it in sea water of a preset depth, when the coupling frame 1 is stably suspended in the sea water, under the action of the gravity of the coupling frame 1, the vertex of the coupling frame 1 connected with the rope 8 is always located above the coupling frame 1. The coupling frame 1 is a regular tetrahedron structure, which makes it difficult for the coupling frame 1 to roll over, and the coupling frame 1 is suspended in the sea water. When collecting the electric field and magnetic field in the sea water, the field signal collector 3 located inside the connecting structure 2 on multiple edges of the coupling frame 1 can collect complete three-component field signal data, so that the field signal data can be projected in the three directions of the spatial coordinate system X, Y, and Z through orthogonal projection.

[0055] In another embodiment of the present application, the coupling frame 1 is a rectangular parallelepiped structure, the coupling frame 1 includes eight vertices, the number of connection structures 2 is twelve, each connection vertex radiates three connection structures 2, and among the multiple connection structures 2 radiated from the same connection vertex, the angles between any two connection structures 2 are equal, both 90°. By establishing a space as a reference system at any vertex of the coupling frame 1, the field signal data can be calculated.

[0056] In another embodiment of the present application, the coupling frame 1 is a cube structure, the coupling frame 1 includes eight vertices, the number of connecting structures 2 is twelve, each connecting vertex radiates three connecting structures 2, and among the several connecting structures 2 radiated from the same connecting vertex, the angles between any two connecting structures 2 are equal, both are 90°, and the lengths of any two connecting structures 2 are equal. A space reference system is established at any vertex of the coupling frame 1 to facilitate the calculation of field signal data.

[0057] In another embodiment of the present application, at least one field signal collector 3 is built into two adjacent connecting structures 2, and the two adjacent connecting structures 2 where the field signal collector 3 is located are arranged at an angle in space, so that the two magnetic field signals collected by the field signal collector 3 in the two adjacent connecting structures 2 all generate components in the X, Y, and Z directions of a three-dimensional rectangular coordinate system.

[0058] Specifically, in the embodiments of this application, please refer to Figure 2 , the coupling frame 1 is a regular tetrahedron structure, and has four connecting vertices and six connecting structures 2. The multiple field signal collectors 3 include at least two magnetic field signal collectors 4, and the at least two connecting structures 2 where the at least two magnetic field signal collectors 4 are located are arranged at an angle in space, so that the at least two magnetic field signals collected by the at least two magnetic field signal collectors 4 all generate components in the X, Y, and Z directions of a three-dimensional rectangular coordinate system; or the multiple field signal collectors 3 include at least two electric field signal collectors 5, and the at least two connecting structures 2 where the at least two electric field signal collectors 5 are located are arranged at an angle in space, so that the at least two electric field signals collected by the at least electric field signal collectors 5 all generate components in the X, Y, and Z directions of a three-dimensional rectangular coordinate system.

[0059] Specifically, the multiple field signal collectors 3 include two magnetic field signal collectors 4 or two electric field signal collectors 5, which are used to collect magnetic field or electric field signals in two directions in the ocean field to be detected. The two connecting structures 2 where the two magnetic field signal collectors 4 or the two electric field signal collectors 5 are located are neither parallel nor overlapped in space, so that the two magnetic field signals or electric field signals collected by the two magnetic field signal collectors 4 or the two electric field signal collectors 5 generate components in the X, Y, and Z directions of the three-dimensional rectangular coordinate system, so that the magnetic field signals or electric field signals in the ocean field to be detected can be projected in the three directions of X, Y, and Z through orthogonal decomposition, thereby facilitating cumulative calculation.

[0060] In one embodiment of the present application, the multiple field signal collectors 3 include three magnetic field signal collectors 4, and the three connecting structures 2 where the three magnetic field signal collectors 4 are located radiate from the same connecting vertex of the coupling frame 1; among the three connecting structures 2 radiated from the same connecting vertex, one connecting structure 2 is set at an angle to the plane where the other two connecting structures 2 are located.

[0061] Specifically, in the embodiments of this application, please refer to Figure 3The coupling frame 1 is a regular tetrahedron structure, and has four connecting vertices and six connecting structures 2, and each connecting vertex radiates three connecting structures 2. The three connecting structures 2 radiated by one of the connecting vertices are respectively built with a magnetic field signal collector 4. The three magnetic field signal collectors 4 are used to collect the distribution of magnetic field signals in the ocean field to be detected. After the magnetic field signal is collected, a spatial coordinate system with three directions of X, Y, and Z is established, and the magnetic field signal data of different directions and angles collected by the three magnetic field signal collectors 4 are projected in the three directions of X, Y, and Z by orthogonal projection, and accumulated, so as to calculate the strength of the magnetic field signal in the three directions of X, Y, and Z.

[0062] In one embodiment of the present application, multiple field signal collectors 3 also include an electric field signal collector 5. Except for the three connecting structures 2 with built-in magnetic field signal collectors 4 and a vertex corresponding to the three connecting structures 2, there is a connecting structure 2 connected between any two connecting vertices of the remaining three connecting vertices. The three connecting structures 2 each have at least one electric field signal collector 5 built in. The electric field signal collector 5 has a positive collecting end and a negative collecting end, which are respectively located at the two ends of the extension direction of the connecting structure 2, and are used to collect the distribution of electric field signals in the ocean field to be detected. At the same time, the intensity of the electric field signals in the three directions of X, Y, and Z can also be calculated by orthogonal projection.

[0063] Specifically, in the embodiments of this application, please refer to Figure 3 The number of electric field signal collectors 5 is three. Excluding the three connecting mechanisms with built-in magnetic field signal collectors 4 and a vertex corresponding to the three connecting mechanisms, any two of the remaining three connecting vertices are connected to a connecting structure 2, and each of the three connecting structures 2 has an electric field signal collector 5 built in.

[0064] In one embodiment of the present application, see Figure 4 The coupling frame 1 is a regular tetrahedron structure and has four connection vertices and six connection structures 2, and each connection vertex radiates three connection structures 2. The multiple field signal collectors 3 include three magnetic field signal collectors 4 and three electric field signal collectors 5. Among the three connection structures 2 radiated from one connection vertex, two of the three connection structures 2 have a built-in magnetic field signal collector 4, and the other connection structure 2 has a built-in electric field signal collector 5.

[0065] Among the other three connection structures 2, two of them have an electric field signal collector 5 built in, and the other connection structure 2 has a magnetic field signal collector 4 built in. Among the three connection structures 2 radiated from the same vertex, the planes where the two connection structures 2 with the magnetic field signal collectors 4 are located are arranged at an angle with another connection structure 2 with the magnetic field signal collector 4 installed. So that the magnetic field signals of different directions and angles collected by the three magnetic field signal collectors 4 and the electric field signal data of different directions and angles collected by the three electric field signal collectors 5 are projected in the three directions of X, Y, and Z respectively by orthogonal projection, and accumulated, so as to calculate the strength of the magnetic field signals in the three directions of X, Y, and Z.

[0066] In another embodiment of the present application, see Figure 5 The coupling frame 1 is a regular tetrahedron structure, and has four connection vertices and six connection structures 2, and each connection vertex radiates three connection structures 2. The three connection structures 2 radiated from one of the connection vertices are respectively built with a magnetic field signal collector 4; any two connection vertices of the remaining three connection vertices are connected with a connection structure 2, one of the three connection structures 2 is built with a magnetic field signal collector 4, and the other two of the three connection structures 2 are built with electric field signal collectors 5, so as to realize redundant detection of magnetic field signals in the ocean field to be detected.

[0067] In another embodiment of the present application, see Figure 6 The coupling frame 1 is a regular tetrahedron structure, and has four connection vertices and six connection structures 2, and each connection vertex radiates three connection structures 2. Three connection structures 2 radiated from one of the connection vertices are respectively built with an electric field signal collector 5; any two connection vertices of the remaining three connection vertices are connected with a connection structure 2, one of the three connection structures 2 is built with an electric field signal collector 5, and the other two of the three connection structures 2 are built with a magnetic field signal collector 4, so as to realize redundant detection of electric field signals in the ocean field to be detected.

[0068] In another embodiment of the present application, the coupling frame 1 has four connection vertices, and each connection vertex radiates three connection structures 2. The multiple field signal collectors 3 include magnetic field signal collectors 4 and electric field signal collectors 5. The three connection structures 2 radiated from one of the connection vertices respectively have at least one magnetic field signal collector 4 and at least one electric field signal collector 5 built in.

[0069] Specifically, in the present application, the coupling frame 1 is a regular tetrahedron structure, and has four connection vertices and six connection structures 2, and each connection vertex radiates three connection structures 2. Among the three connection structures 2 radiated from one connection vertex, each connection structure 2 has at least one magnetic field signal collector 4 and at least one electric field signal collector 5 built in.

[0070] In one embodiment of the present application, the coupling frame 1 has a plurality of connection vertices, each of which is provided with a floating object 6, and both ends of the length of each connection structure 2 are respectively connected to two adjacent floating objects 6. The marine electromagnetic acquisition equipment also includes at least one releaser 7, which has two opposite connection ends, one of which is used to connect to the coupling frame 1, and the other is used to connect to the anchor 9, and the releaser 7 is used to cut off the connection between the coupling frame 1 and the anchor 9.

[0071] Specifically, in the implementation of this application, please refer to Figure 1 and Figure 2 The coupling frame 1 is a regular tetrahedron structure, and the coupling frame 1 has four connection vertices, each of which is provided with a float 6. The releaser 7 is a sonic wave releaser 7, and the upper end is connected to one of the floats 6 through a rope 8, and the lower end of the releaser 7 is connected to the anchor 9 through the rope 8. Under the action of the gravity of the anchor 9 and the buoyancy of the float 6, the coupling frame 1 is suspended in the seawater in the ocean field to be detected. After the collection task is completed, the sonic wave is emitted to the sonic wave releaser 7, and the sonic wave releaser 7 cuts the rope 8. The coupling frame 1 rises to the sea surface under the action of the buoyancy of the float 6, completing the recovery of the ocean electromagnetic collection equipment.

[0072] In one embodiment, the marine electromagnetic collection equipment also includes an auxiliary float 10 and two releasers 7 respectively connected to the auxiliary float 10, wherein one end of the releaser 7 away from the float 6 is used to connect to the sinking coupling frame 1, and the other end of the releaser 7 away from the float 6 is used to connect to the anchor 9.

[0073] Specifically, in the implementation of this application, please refer to Figure 1 An auxiliary float 10 is arranged on the rope 8 connecting the anchor 9 and the float 6, and two releasers 7 are respectively connected to the rope 8 between the auxiliary float 10 and the float 6 and the rope 8 between the auxiliary float 10 and the anchor 9. When recovering the marine electromagnetic collection equipment, the releaser 7 on the rope 8 between the auxiliary float 10 and the anchor 9 first cuts off the rope 8 between the auxiliary float 10 and the anchor 9. If the releaser 7 fails to work normally, the rope 8 between the auxiliary float 10 and the float 6 is activated to cut off the rope 8 between the auxiliary float 10 and the float 6, thereby completing the recovery of the marine electromagnetic collection equipment.

[0074] In one embodiment, the marine electromagnetic acquisition device further includes a power supply, which is installed in a connection mechanism with a built-in field signal collector 3, and the field signal collector 3 is electrically connected to the power supply.

[0075] Specifically, in the embodiments of the present application, a battery is provided inside each connection structure 2 on which a magnetic field signal collector 4 or an electric field signal collector 5 is installed, and the magnetic field signal collector 4 or the electric field signal collector 5 located inside the connection structure 2 is electrically connected to the battery, thereby achieving modularization and enabling each magnetic field signal collector 4 or electric field signal collector 5 to work independently.

[0076] In one embodiment, at least a portion of the connection structure 2 is built with at least one of a hydrophone, a thermometer, a salinity meter, a hydroacoustic positioning transponder, a posture sensor, and an acceleration sensor.

[0077] Specifically, in this implementation, at least one of a hydrophone, a thermometer, a salinity meter, a hydroacoustic positioning transponder, a posture sensor, and an acceleration sensor can be installed inside the connection structure 2 as needed to achieve different detection functions.

[0078] For example, a hydroacoustic positioning transponder, a posture sensor and an acceleration sensor are installed inside the connection structure 2. The hydroacoustic positioning device can be used to locate the marine electromagnetic acquisition device; the posture and acceleration sensors are used to record the inclination data and acceleration data of the marine electromagnetic acquisition device moving in the seawater, so as to restore the motion trajectory of the marine electromagnetic acquisition device in the seawater and the electromagnetic field component data after being recovered at the acquisition station.

[0079] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A marine electromagnetic acquisition device, characterized in that: include: The coupling frame includes a plurality of connection structures, which are staggered and distributed in space and connected to each other to form a frame structure, and the frame structure is used to be suspended in the ocean field to be detected, and the coupling frame is a regular tetrahedron structure; A plurality of field signal collectors, wherein at least some of the connection structures are equipped with the field signal collectors, and at least one of the connection structures is equipped with at least one field signal collector, and the field signal collectors are used to collect field signals in the ocean field to be detected; The marine electromagnetic collection equipment also includes at least one releaser, which has two opposite connecting ends, one of which is used to connect to the connecting vertex of the sinking coupling frame, and the other connecting end is connected to the anchor through a rope. The releaser is used to cut off the connection between the sinking coupling frame and the anchor, and the releaser is an acoustic wave releaser.

2. The marine electromagnetic acquisition device according to claim 1, characterized in that: The coupling frame has a plurality of connection vertices, and each of the connection vertices radiates at least a plurality of the connection structures; among the plurality of connection structures radiated from the same connection vertex, the angle between any two of the connection structures is less than or equal to 90°.

3. The marine electromagnetic acquisition device according to claim 2, characterized in that: Among the plurality of connection structures radiating from the same connection vertex, the included angles of any two of the connection structures are equal, and the lengths of any two of the connection structures are equal.

4. The marine electromagnetic acquisition device according to claim 3, characterized in that: The coupling frame has four connection vertices, and each connection vertex radiates three connection structures; among the three connection structures radiated from the same connection vertex, the angle between any two connection structures is 60°.

5. The marine electromagnetic acquisition device according to any one of claims 1 to 4, characterized in that: At least one field signal collector is built into two adjacent connection structures, and the two adjacent connection structures where the field signal collector is located are arranged at an angle in space, so that the two field signals collected by the field signal collectors in the two adjacent connection structures all generate components in the X, Y, and Z directions of a three-dimensional rectangular coordinate system.

6. The marine electromagnetic acquisition device according to claim 5, characterized in that: The multiple field signal collectors include three magnetic field signal collectors, and the three connection structures where the three magnetic field signal collectors are located radiate from the same connection vertex of the sinking coupling frame; Among the three connection structures radiating from the same connection vertex, one of the connection structures is arranged at an angle to the planes where the other two connection structures are located.

7. The marine electromagnetic acquisition device according to claim 6, characterized in that: The coupling frame has four connection vertices, and each connection vertex radiates three connection structures; Each of the three connection structures radiating from one of the connection vertices has a built-in magnetic field signal collector; The multiple field signal collectors also include an electric field signal collector, and any two of the other three connection vertices are connected to a connection structure, and at least one electric field signal collector is built in each of the three connection structures.

8. The marine electromagnetic acquisition device according to claim 6, characterized in that: The coupling frame has four connection vertices, and each connection vertex radiates three connection structures; Each of the three connection structures radiating from one of the connection vertices has a built-in magnetic field signal collector; The multiple field signal collectors also include three electric field signal collectors, and a connection structure is connected between any two of the other three connection vertices, and each of the three connection structures has an electric field signal collector built in it.

9. The marine electromagnetic acquisition device according to claim 6, characterized in that: The multiple field signal collectors also include three electric field signal collectors; The coupling frame has four connection vertices, and each connection vertex radiates three connection structures; Among the three connection structures radiated from one of the connection vertices, any two of the three connection structures are respectively built with a magnetic field signal collector, and another connection structure is built with an electric field signal collector; A connection structure is connected between any two of the other three connection vertices. Among the three connection structures, two of the connection structures each have an electric field signal collector built in, and another connection structure has a magnetic field signal collector built in. The connection structure with the magnetic field signal collector built in is arranged at an angle to the plane where the other two connection structures with the magnetic field signal collectors built in are located.

10. The marine electromagnetic acquisition device according to claim 1, characterized in that: The sinking coupling frame has a plurality of connection vertices, each of which is provided with a floating object, and both ends of the length of each connection structure are respectively connected to two adjacent floating objects.

11. The marine electromagnetic acquisition device according to claim 1, characterized in that: The marine electromagnetic collection equipment also includes a float and two releasers respectively connected to the float, wherein one end of one releaser away from the float is used to connect to a sinking coupling frame, and the other end of the releaser away from the float is used to connect to an anchor.

12. The marine electromagnetic acquisition device according to claim 1, characterized in that: The marine electromagnetic acquisition equipment also includes a power supply, which is installed in the connecting mechanism with the field signal collector built in, and the field signal collector is electrically connected to the power supply.

13. The marine electromagnetic acquisition device according to claim 1, characterized in that: At least one of a hydrophone, a thermometer, a salinity meter, a hydroacoustic positioning transponder, a posture sensor and an acceleration sensor is built into at least part of the connection structure.

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