CN115793075A - Near-bottom precision detection device and precise calibration method for high-resolution ocean magnetic force - Google Patents
Near-bottom precision detection device and precise calibration method for high-resolution ocean magnetic force Download PDFInfo
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Abstract
The invention discloses a near-bottom precision detection device and a near-bottom precision calibration method for high-resolution ocean magnetic force, which belong to the field of ocean geomagnetic detection and comprise a first foundation column, wherein a geomagnetic measurement component is coaxially extended from the bottom end of the first foundation column; a plurality of geomagnetic measurement assemblies are symmetrically arranged on the bottom side of the first foundation column in a surrounding mode and are connected with the first foundation column through a first connecting rod; the geomagnetic measurement assembly comprises a measurement substrate, the upper end of the measurement substrate is provided with a concave through groove, and a rotating ball is arranged in the concave through groove in a matching manner; a first vertical rod is vertically arranged below the rotating round ball, a geomagnetic measuring device is arranged at the bottom end of the first vertical rod, a weight increasing assembly is arranged on one side, far away from the first vertical rod, of the geomagnetic measuring device, and an adjusting nut is arranged at one end, close to the rotating round ball, of the first vertical rod; the top end of the first foundation column is provided with a hanging base body, and a hanging ring is arranged on the hanging base body. The invention can realize the calibration of geomagnetic measurement, has high precision and keeps the magnetic total quantity and the magnetic component measuring device in the same horizontal plane.
Description
Technical Field
The invention belongs to the field of ocean geomagnetic detection, and particularly relates to a near-bottom precision detection device and a precision calibration method for high-resolution ocean magnetic force.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The establishment of the geomagnetic three-component measurement technology based on the mobile carrier promotes the upgrade of the ocean geomagnetic measurement technology in China, the updating of the ocean geomagnetic field basic result data from the total field to the components and tensor is realized, and the processing and interpretation of the geomagnetic data are driven to realize the promotion from the total field abnormity to the component abnormity and the gradient tensor.
The prior art is disclosed as publication number CN 106226830B, namely the invention of a marine magnetic detection method and device. The invention discloses a marine magnetic force detection device and a detection method, the device comprises a measuring ship, a shipborne laboratory magnetic measurement part arranged on the measuring ship, an aerostat shell and an aerostat magnetic measurement part arranged in the aerostat shell, wherein the aerostat shell is connected with the measuring ship through a rope, the aerostat shell floats in the air, the aerostat magnetic measurement part comprises a magnetic sensor, a magnetic data acquisition electronic unit and an aerostat transmission unit, and the shipborne laboratory magnetic measurement part comprises a data recording computer and a laboratory transmission unit. The ocean magnetic detection method and the ocean magnetic detection device are not limited by a working sea area, and can synchronously operate with other shipborne equipment and towing equipment.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
Disclosure of Invention
The invention aims to provide a near-bottom precision detection device and a near-bottom precision calibration method for high-resolution ocean magnetic force, which can realize calibration and high precision of geomagnetic measurement and keep a magnetic total quantity and a magnetic component measurement device in the same horizontal plane.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a near-bottom precision detection device of high-resolution ocean magnetic force is characterized by comprising,
the bottom end of the first foundation column coaxially extends to form a geomagnetic measurement component; a plurality of geomagnetic measurement assemblies are symmetrically arranged on the bottom side of the first foundation column in a surrounding mode and are connected with the first foundation column through a first connecting rod;
the geomagnetic measurement assembly comprises a measurement substrate, a concave through groove is formed in the upper end of the measurement substrate, a rotating ball is arranged in the concave through groove in a matched mode, and the rotating ball can rotate in the concave through groove; a first vertical rod is vertically arranged below the rotating ball, a geomagnetic measuring device is arranged at the bottom end of the first vertical rod, a weight increasing assembly is arranged on one side of the geomagnetic measuring device away from the first vertical rod, and an adjusting nut is arranged at one end, close to the rotating ball, of the first vertical rod;
the top end of the first foundation column is provided with a hanging base body, and a hanging ring is arranged on the hanging base body.
Through the arrangement of the integral device, a geomagnetic measurement component is coaxially arranged at the bottom end of the first foundation column in an extending mode and used for measuring and recording the total amount of geomagnetism; and encircle at first foundation pillar bottom side and be provided with a plurality of earth magnetism measuring component, the earth magnetism measuring component that the symmetry set up of encircleing is used for measuring and the record earth magnetism component, the error of measurement can be reduced to the setting of symmetry encircleing, improve the precision of whole device, through measuring simultaneously earth magnetism total amount and earth magnetism component and record, total amount and component integration measurement technique has been realized promptly, in the complex environment of carrier near field, realize the integration measurement of total field and component, total field measurement result is used for the correction of component, improve magnetic field measurement accuracy and correction effect.
Furthermore, each of the geomagnetic measurement components is located at the same horizontal plane. The bottom side is connected with the first foundation column through the first connecting rod in a surrounding and symmetrical mode, and the position of the geomagnetic measurement assembly is controlled by controlling the height of the first connecting rod, so that the geomagnetic measurement assemblies can be positioned on the same horizontal plane.
Through the setting to earth magnetism measuring component, set up the recess on measuring the base member and lead to the groove and including being equipped with the rotation ball, make to rotate the ball and can lead to the inslot rotation at the recess, it is equipped with first pole that hangs down perpendicularly to rotate the ball below, first pole bottom that hangs down is equipped with earth magnetism measuring device, earth magnetism measuring device is equipped with the weight gain subassembly apart from the first one side that hangs down the pole far away, can make the weight gain subassembly be vertical decurrent all the time through the effect of gravity, thereby earth magnetism measuring device who is connected with the weight gain subassembly also can keep the horizontality, the earth magnetism measuring component that carries out the measurement to earth magnetism total measurement promptly with carry out the earth magnetism measuring component to earth magnetism component and keep the horizontality constantly, and be in same horizontal plane always, great increase measuring accuracy.
Further, the weighting component is iron or PVC. The weight is ensured, the pollution to the environment can be reduced, and meanwhile, the geomagnetic measuring device on the upper part of the weight increasing assembly can be protected by arranging the weight increasing assembly, so that the geomagnetic measuring device is prevented from being damaged due to bottom scraping or collision in the process that the whole device sinks to the water bottom from the sea surface; adopt the high density subassembly that increases weight, can also guarantee that whole device keeps stability at the bottom, guarantee the accuracy nature in measurement place, and then be favorable to improving whole device stability and accuracy nature in the measurement process.
The top end of the first foundation column is provided with a hanging base body, and the hanging base body is provided with a hanging ring. The device is usually put in after being dragged to a proper place by a ship or other carriers, and the suspension loop is mainly connected with the carriers through a connecting rope body.
According to an embodiment of the present invention, balls are disposed between the rotating ball and the concave through groove.
Through rotating and being equipped with the ball between ball and the recess leads to the groove, make to rotate the sliding friction between ball and the recess leads to the groove and become rolling friction, coefficient of friction and frictional resistance have further been reduced, and then make when the integrated device takes place to incline or when great water impact, first pole that hangs down can set up through the aforesaid and keep vertical decurrent gesture fast, and then guarantee that a plurality of earth magnetism measuring device remain on the coplanar all the time, be favorable to still keeping higher measurement accuracy when the integrated device meets emergency, for example meet the place of torrent or topography unevenness at the bottom, can make earth magnetism measuring component keep the level and measure fast.
According to one embodiment of the invention, a first rotating ring is arranged around the bottom side of the first base column, and a first connecting rod of the first rotating ring is rotatably connected;
the upper end of the first foundation column is provided with a guide blind hole, a first guide column is coaxially arranged in the guide blind hole, the top end of the first guide column is fixedly connected with the hanging base body, the bottom end of the first guide column is provided with a first connecting column which is perpendicular to the axis of the first foundation column, the first connecting column penetrates through the first foundation column, the first foundation column is provided with a through groove along the axis, and the through groove is used for the first connecting column to slide up and down;
a stretching base body is coaxially arranged in the middle of the first foundation column, a groove ring is circumferentially arranged in the middle of the stretching base body, a second rotating ring is arranged in the groove ring and is coaxially arranged with the first foundation column, the second rotating ring is rotatably connected with a plurality of second connecting rods, the second connecting rods are arranged in one-to-one correspondence with the first connecting rods, and moving members are arranged at the end parts of the correspondingly arranged second connecting rods and are in sliding connection with the first connecting rods;
the first connecting column connects the top and the bottom of the tensile substrate.
The first connecting rod can enable the first rotating ring body to rotate, and the other end of the first connecting rod is provided with the geomagnetic measurement component, so that the geomagnetic measurement component can rotate around the first rotating ring body; the stretching base body is connected with the bottom end of the first guide post through the first connecting post, meanwhile, the stretching base body is provided with a second rotating ring, the second rotating ring is rotatably connected with second connecting rods which are in one-to-one correspondence with the first connecting rods, so that when the first guide post is stretched upwards, the stretching base body can move upwards along with the first connecting rods, and the moving piece arranged at the end part of the first base post, far away from the second connecting rods, can stretch the first connecting rods upwards, so that the first connecting rods are folded towards the first base post; on the contrary, when first guide post moves down, can open the head rod downwards, stop when the earth magnetism measuring component that the outer tip of head rod set up and first base post coaxial extension are equipped with earth magnetism measuring component parallel and level.
Through the design, the integral device can be ensured to be folded when being idle or in the transportation process, the damage of the integral device caused by collision or friction in the idle or transportation process is prevented, and the probability of collision damage can be reduced through the foldable design; secondly, when the integral device is used, namely the integral device descends in water, the whole device can be streamline by pulling the lifting substrate to move upwards, the resistance of a water body to the integral device can be reduced, the submerging speed of the integral device is facilitated, the higher the submerging speed is, the higher the precision of a target place is, and the higher the measuring precision of a target measuring position is, the higher the measuring precision of the target measuring position is; thirdly, when the first guide post moves downwards, the first guide post stops when all the geomagnetic measurement assemblies are leveled, and therefore the accuracy of the device in measurement is guaranteed; simultaneously, because the first pole that hangs down among the earth magnetism measuring component that first connecting rod tip set up can keep the same direction with gravity, and then can be when the integrated device in aquatic decline in-process, if meet vortex and when undercurrent, earth magnetism measuring component can make it prevent to take place the rotation of self or turn on one's side through inertia, and then can guarantee the measurement accuracy of integrated device to the target location.
According to one embodiment of the invention, a second base body is coaxially arranged at the top end of the first base column, the second base body comprises a first plate body and a second plate body which are arranged at intervals up and down, and the first plate body and the second plate body are connected through a second connecting column;
the lower side surface of the second plate body is coaxially connected with the top end of the first base column, one side of the hanging base body, which is close to the second plate body, is vertically and symmetrically provided with a plurality of second guide columns, the second plate body is provided with a plurality of guide holes corresponding to the second guide columns, and the second guide columns can slide along the guide direction;
the first plate body is provided with hanging ring holes corresponding to the hanging rings.
A plurality of second guide columns are vertically and symmetrically arranged on one side, close to the second plate body, of the hanging base body, a plurality of guide holes are formed in the second plate body and correspond to the second guide columns, the second guide columns can slide along the guide direction, so that the first base columns can move stably in the axial direction, and the situation that the first guide columns are broken due to transverse force under the action of dark current or turbulent flow in the stretching process is prevented; the arrangement of a plurality of guide posts and guiding holes can further improve the speed of the first guide post along axial movement, can reduce the time of the whole device in the process of reducing the shrinkage or opening state, and improve the efficiency of the whole device.
According to one embodiment of the invention, a magnetic control switch cabin is arranged on the second plate body close to the hanging base body, and a magnet is arranged on one side of the hanging base body opposite to the magnetic control switch cabin and used for controlling the switch of the magnetic control switch cabin.
The magnetic control switch cabin is used for switching the bottom geomagnetic measurement device, and the magnet is arranged on one side of the hanging base body opposite to the magnetic control switch cabin, so that the geomagnetic measurement devices in various places can start to work when the hanging base body of the integral device is close to the magnetic control switch cabin; when the hanging ring is pulled up, the hanging base body moves upwards, the magnetic control switch cabin is separated from the hanging base body, and therefore the geomagnetic measurement device stops working. The energy-saving device is beneficial to ensuring the energy conservation, is beneficial to measuring more places by single navigation and improves the measuring efficiency.
Furthermore, a battery compartment is arranged on one side of the magnetic control switch compartment. The battery compartment can be connected with each electronic device, so that the battery compartment can be used for supplying power to the whole device if the whole device meets an emergency underwater; meanwhile, due to the arrangement of the battery compartment, the cruising ability of the whole device can be improved, and the detection efficiency of the device is further improved.
According to an embodiment of the present invention, a first base is disposed outside the first base pillar, the first base is disposed below the second base, the first base is connected to the second base, and a bottom of the first base is lower than the geomagnetic total amount measurement device;
a plurality of anti-sinking components are symmetrically arranged at the bottom of the first base body.
The first base pillar and the various geomagnetic measurement assemblies are contained in the first base pillar by the first base pillar outer frame, so that the influence of external impact on the first base pillar and the various geomagnetic measurement assemblies is favorably prevented, the impact of floating partial fragments or impurities in the water body on the whole device is favorably prevented, and the measurement precision of the whole device is further improved; in addition, be equipped with a plurality of subassemblies that prevent sinking in first base member bottom, can prevent that equipment from sinking too deeply, guarantee that the integrated device is in reasonable position and measures, can also guarantee simultaneously that the integrated device reduces the damping at last pulling-up in-process.
According to one embodiment of the invention, the anti-sinking assembly comprises a plurality of anti-sinking damping bowls which are vertically arranged side by side, and the anti-sinking damping bowls are connected in a penetrating manner through a third connecting rod;
the cambered surface of the anti-sinking damping bowl is arranged in a protruding mode.
Through a plurality of anti-subsidence damping bowls that set up side by side perpendicularly, when the water flowed through, the water body can flow along the anti-subsidence damping bowl outer wall, because the anti-subsidence damping bowl is protruding setting, upper portion can form the negative pressure, and the ascending velocity of flow can be greater than the decurrent velocity of flow, and then makes the water body can flow upwards along the anti-subsidence damping bowl, and then can drive silt or earth upward movement around the anti-subsidence damping bowl, prevents to pile up around the anti-subsidence damping bowl. Meanwhile, the lower part of the sinking-prevention damping bowl is wide, so that the whole device can be effectively prevented from sinking too deeply, the whole device is ensured to be in a reasonable position for measurement, and meanwhile, the whole device can be ensured to reduce damping in the upward pulling process.
According to an embodiment of the present invention, a flow guiding assembly is disposed around the outside of the first base, the flow guiding assembly includes a plurality of flow guiding plates disposed side by side in a horizontal direction, two sides of the flow guiding plates are connected to the first base through a rotating shaft, and the flow guiding plates can rotate around the rotating shaft.
The guide assembly is arranged on the outer side of the first base body in a surrounding mode, the water resistance of the whole device can be reduced through the plurality of transversely arranged guide plate bodies, and the measurement deviation caused by overlarge influence of water flow in the measurement process or the transfer process of the whole device is prevented; in addition, the guide plate can generate a downward force when water flows through the guide plate, so that the whole device is stably arranged at a position to be measured, and the whole device is prevented from deviating in the measuring process; in addition, through being provided with a plurality of guide plates that transversely set up side by side, can further protect earth magnetism measuring component, be favorable to preventing that the floating part piece or impurity in the water from to whole device production impact, further improve whole device's measurement accuracy.
Drawings
FIG. 1 is a general schematic diagram of a high-resolution ocean magnetic near-bottom precision detection device;
FIG. 2 is an enlarged view taken at I;
FIG. 3 is a partial schematic view of a second substrate of the high-resolution ocean magnetic near-bottom precision detection device;
fig. 4 is an overall schematic view of the geomagnetic measurement component;
FIG. 5 is a schematic cross-sectional view of a geomagnetic measurement assembly;
FIG. 6 is a front view of the trap prevention assembly;
FIG. 7 is a schematic view of the entire high-resolution ocean magnetic near-bottom precision detection apparatus in example 2;
FIG. 8 is a schematic flow chart of a near-bottom precision detection method of high-resolution ocean magnetic force.
Reference numerals: the geomagnetic sensor comprises a first base column 100, a first connecting rod 101, a blind guide hole 102, a first connecting column 103, a through groove 104, a hanging base 110, a hanging ring 111, a first rotating ring 120, a tensile base 130, a groove ring 131, a second rotating ring 132, a second connecting rod 133, a moving part 134, a geomagnetic measurement component 200, a measurement base 210, a concave through groove 211, a rotating ball 220, a first vertical rod 230, a geomagnetic measurement device 231, a weight increasing component 232, an adjusting nut 233, a second base 300, a second connecting column 301, a first plate body 310, a hanging ring hole 311, a second plate body 320, a second guiding column 321, a guiding hole 322, a magnetic control switch bin 330, a magnet 331, a battery bin 332, a first base 400, a flow guide component 410, a flow guide plate body 411, an anti-sinking component 500, an anti-sinking damping bowl 510 and a third connecting rod 520.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:
example 1:
as shown in fig. 1,2,3 and 4, the technical solution adopted by the invention to achieve the above purpose is as follows:
a near-bottom precision detection device of high-resolution ocean magnetic force comprises,
the geomagnetic sensor comprises a first base column 100, wherein a geomagnetic measurement component 200 is coaxially arranged at the bottom end of the first base column 100 in an extending mode; a plurality of geomagnetic measurement assemblies 200 are symmetrically arranged around the bottom side of the first base column 100, and the geomagnetic measurement assemblies 200 are connected with the first base column 100 through first connecting rods 101;
the geomagnetic measurement component 200 comprises a measurement substrate 210, a concave through groove 211 is arranged at the upper end of the measurement substrate 210, a rotation ball 220 is arranged in the concave through groove 211 in a matching manner, and the rotation ball 220 can rotate in the concave through groove 211; a first vertical rod 230 is vertically arranged below the rotary ball 220, a geomagnetic measuring device 231 is arranged at the bottom end of the first vertical rod 230, a weight increasing component 232 is arranged on the far side of the geomagnetic measuring device 231 from the first vertical rod 230, and an adjusting nut 233 is arranged at one end, close to the rotary ball 220, of the first vertical rod 230;
the top end of the first base pillar 100 is provided with a hanging base 110, and the hanging base 110 is provided with a hanging ring 111.
Through the arrangement of the integral device, the bottom end of the first foundation column 100 is coaxially and extendedly provided with a geomagnetic measurement component 200, and the geomagnetic measurement component is used for measuring and recording the total amount of geomagnetism; and a plurality of geomagnetic measurement components 200 are arranged on the bottom side of the first foundation column 100 in a surrounding manner, the geomagnetic measurement components 200 arranged in a surrounding manner symmetrically are used for measuring and recording geomagnetic components, the measurement error can be reduced due to the arrangement of the symmetrical surrounding manner, the precision of the whole device is improved, the total amount of geomagnetism and the geomagnetic components are measured and recorded simultaneously, namely, the total amount and component integrated measurement technology is realized, the integrated measurement of a total field and components is realized in a near-field complex environment of a carrier, the measurement result of the total field is used for correcting the components, and the measurement precision and the correction effect of the magnetic field are improved.
Further, each of the geomagnetic measurement assemblies 200 is at the same level. The plurality of geomagnetic measurement assemblies 200 symmetrically arranged around the bottom side are connected with the first foundation column 100 through the first connecting rods 101, and the height of the first connecting rods 101 is controlled to further control the positions of the geomagnetic measurement assemblies 200, so that the geomagnetic measurement assemblies 200 can be positioned on the same horizontal plane.
Through the arrangement of the geomagnetic measurement component 200, the concave through groove 211 is arranged on the measurement substrate 210, and the rotating ball 220 is arranged in the concave through groove 211, so that the rotating ball 220 can rotate in the concave through groove 211, the first vertical rod 230 is vertically arranged below the rotating ball 220, the geomagnetic measurement device 231 is arranged at the bottom end of the first vertical rod 230, the weight gain component 232 is arranged on one side of the geomagnetic measurement device 231, which is far away from the first vertical rod 230, so that the weight gain component 232 can always be vertically downward through the action of gravity, and the geomagnetic measurement device 231 connected with the weight gain component 232 can also keep a horizontal state, namely, the geomagnetic measurement component 200 for measuring the total amount of geomagnetism and the geomagnetic measurement component 200 for measuring the geomagnetic component are always kept in a horizontal state and are always in the same horizontal plane, thereby greatly increasing the measurement accuracy; adjusting nut 233 can adjust the rotatable angle of first pole 230 that hangs down, can also prevent to rotate ball 220 simultaneously and roll out from the logical groove 211 of concavity, improves overall device stability, simultaneously, through adjusting nut 233's setting, makes things convenient for earth magnetism measuring component 200 to dismantle, improves the convenient degree that overall device changed and maintained.
Further, the weight increasing member 232 is iron or PVC. The environment pollution can be reduced while the weight is ensured, and meanwhile, the geomagnetic measurement device 231 on the upper part of the weight increasing assembly 232 can be protected by arranging the weight increasing assembly, so that the geomagnetic measurement device 231 is prevented from being damaged due to bottom scraping or collision in the process that the whole device sinks to the water bottom from the sea surface; adopt high density to increase weight subassembly 232, can also guarantee that whole device keeps stability at the bottom, guarantee the accuracy nature in measurement place, and then be favorable to improving whole device stability and accuracy nature in the measurement process.
The top end of the first base pillar 100 is provided with a hanging base 110, and the hanging base 110 is provided with a hanging ring 111. The device is usually launched by a ship or other vehicles after being dragged to a proper place, and the suspension loop 111 is mainly connected with the vehicles through a connecting rope body.
As shown in fig. 5, a ball 221 is provided between the rotating ball 220 and the concave through groove 211.
Through be equipped with ball 221 between rotation ball 220 and recessed logical groove 211, make the sliding friction who rotates between ball 220 and the recessed logical groove 211 become rolling friction, further reduced coefficient of friction and frictional resistance, and then make when the integrated device takes place to incline or when great water impact, first pole 230 that hangs down can keep vertical decurrent gesture through above-mentioned setting fast, and then guarantee that a plurality of earth magnetism measuring device 231 remain on the coplanar all the time, be favorable to still keeping higher measurement accuracy when the integrated device meets emergency, for example meet the place of torrent or topography unevenness at the bottom, can make earth magnetism measuring component 200 keep the level and measure fast.
As shown in fig. 1 and 2, a first rotating ring 120 is arranged around the bottom side of the first base column 100, and the first rotating ring 120 is rotatably connected with a first connecting rod 101;
the upper end of the first foundation column 100 is provided with a blind guide hole 102, a first guide column is coaxially arranged in the blind guide hole 102, the top end of the first guide column is fixedly connected with a hanging base body 110, the bottom end of the first guide column is provided with a first connecting column 103 which is perpendicular to the axis of the first foundation column 100, the first connecting column 103 penetrates through the first foundation column 100, the first foundation column 100 is provided with a through groove 104 along the axis, and the through groove 104 is used for the first connecting column 103 to slide up and down;
a stretching base body 130 is coaxially arranged in the middle of the first foundation column 100, a groove ring 131 is circumferentially arranged in the middle of the stretching base body 130, a second rotating ring 132 is arranged in the groove ring 131, the second rotating ring 132 is coaxially arranged with the first foundation column 100, the second rotating ring 132 is rotatably connected with a plurality of second connecting rods 133, the second connecting rods 133 are arranged in one-to-one correspondence with the first connecting rods 101, and moving members 134 are arranged at the end parts of the correspondingly arranged second connecting rods 133 and slidably connected with the first connecting rods 101;
the first connection post 103 connects the top and bottom ends of the tensile base 130.
The first connecting rod 101 can rotate the first rotating ring 120, and the other end of the first connecting rod 101 is provided with the geomagnetic measurement component 200, so that the geomagnetic measurement component 200 can rotate around the first rotating ring 120; the stretching base 130 is connected with the bottom end of the first guide post through the first connecting post 103, meanwhile, the stretching base 130 is provided with a second rotating ring 132, the second rotating ring 132 is rotatably connected with second connecting rods 133 which are in one-to-one correspondence with the first connecting rods 101, so that when the first guide post is stretched upwards, the stretching base 130 moves upwards along with the first guide post, and the moving members 134 arranged at the end parts of the second connecting rods 133 far away from the first base post 100 can stretch the first connecting rods 101 upwards, so that the first connecting rods 101 are folded towards the first base post 100; conversely, when the first guiding column moves downwards, the first connecting rod 101 is opened downwards until the geomagnetic measurement component 200 arranged at the outer end of the first connecting rod 101 is flush with the geomagnetic measurement component 200 coaxially extending from the first base column 100.
Through the design, the integral device can be ensured to be folded when being idle or in the transportation process, the damage of the integral device caused by collision or friction in the idle or transportation process is prevented, and the probability of collision damage can be reduced through the foldable design; secondly, when the integral device is used, namely the integral device descends in water, the whole device can be streamline by pulling the lifting substrate to move upwards, the resistance of a water body to the integral device can be reduced, the submerging speed of the integral device is facilitated, the higher the submerging speed is, the higher the precision of a target place is, and the higher the measuring precision of a target measuring position is, the higher the measuring precision of the target measuring position is; thirdly, when the first guide post moves downwards, the first guide post stops when all the geomagnetic measurement assemblies 200 are leveled, and therefore the accuracy of the device in measurement is guaranteed; meanwhile, the first vertical rod 230 of the geomagnetic measurement component 200 arranged at the end of the first connecting rod 101 can keep the same direction as gravity, so that the geomagnetic measurement component 200 can prevent the geomagnetic measurement component from rotating or turning over through inertia in the process of falling of the integral device in water if eddy current and undercurrent occur, and the measurement precision of the integral device on a target site can be ensured.
As shown in fig. 1 and 3, a second base 300 is coaxially disposed on the top end of the first base column 100, the second base 300 includes a first plate 310 and a second plate 320 which are disposed at an interval from top to bottom, and the first plate 310 and the second plate 320 are connected by a plurality of second connecting columns 301;
the lower side surface of the second plate 320 is coaxially connected to the top end of the first base column 100, a plurality of second guide posts 321 are vertically and symmetrically arranged on one side of the hanging base body 110 close to the second plate 320, a plurality of guide holes 322 are arranged on the second plate 320 corresponding to the second guide posts 321, and the second guide posts 321 can slide up and down along the axial direction of the first base column 100;
the first plate 310 is provided with a hanging ring hole 311 corresponding to the hanging ring 111.
A plurality of second guide posts 321 are vertically and symmetrically arranged on one side of the hanging base body 110 close to the second plate body 320, a plurality of guide holes 322 are arranged on the second plate body 320 corresponding to the second guide posts 321, the second guide posts 321 can slide along the guide direction, so that the stability of the movement of the first base post 100 in the axial direction can be ensured, and the situation that the first guide posts are broken due to transverse force under the action of dark current or turbulent current in the stretching process is prevented; the arrangement of the guide posts and the guide holes 322 can further improve the speed of the first guide post moving along the axial direction, reduce the time of the whole device in the process of contracting or opening state and improve the efficiency of the whole device.
As shown in fig. 3, a magnetic control switch bin 330 is disposed on the second plate 320 near the hanging substrate 110, a magnet 331 is disposed on a side of the hanging substrate 110 opposite to the magnetic control switch bin 330, and the magnet 331 is used for controlling the opening and closing of the magnetic control switch bin 330.
The magnetic control switch bin 330 is used for switching on and off the bottom geomagnetic measurement device 231, and the magnet 331 is arranged on one side of the hanging base body 110 opposite to the magnetic control switch bin 330, so that when the hanging base body 110 is close to the magnetic control switch bin 330, the whole device can enable each geomagnetic measurement device 231 to start working; when the suspension ring 111 is pulled up, the suspension base 110 moves upward, the magnetic switch cabinet 330 is separated from the suspension base 110, and the geomagnetic measurement device 231 stops operating. The energy-saving device is beneficial to ensuring energy conservation, is beneficial to measuring more places by single navigation and improves the measuring efficiency.
Furthermore, as shown in fig. 3, a battery compartment 332 is disposed at one side of the magnetic switch compartment 330. The battery compartment 332 can be connected with each electronic device, so that the battery compartment 332 can be used for supplying power to the whole device if the whole device meets an emergency underwater; meanwhile, due to the arrangement of the battery cabin 332, the cruising ability of the whole device can be improved, and the detection efficiency of the device is further improved.
As shown in fig. 1, a first base 400 is disposed outside the first base column 100, the first base 400 is disposed below the second base 300, the first base 400 is connected to the second base 300, and the bottom of the first base 400 is lower than the geomagnetic measurement apparatus 200;
a plurality of anti-trap assemblies 500 are symmetrically arranged at the bottom of the first base 400.
The first base body 400 is arranged on the outer side of the first base column 100, and the first base body 400 encloses the first base column 100 and each geomagnetic measurement assembly 200 by the outer frame of the first base body 400, so that the influence of external impact on the first base column 100 and each geomagnetic measurement assembly 200 is favorably prevented, part of floating fragments or impurities in a water body are favorably prevented from impacting the whole device, and the measurement accuracy of the whole device is further improved; in addition, the bottom of the first base body 400 is provided with a plurality of anti-sinking assemblies 500, so that the equipment can be prevented from sinking too deeply, the whole device can be ensured to be in a reasonable position for measurement, and meanwhile, the damping of the whole device can be reduced in the upward pulling process.
As shown in fig. 1 and 6, the anti-settling assembly 500 comprises a plurality of anti-settling damping bowls 510 arranged vertically side by side, wherein the plurality of anti-settling damping bowls 510 are connected in a penetrating manner through a third connecting rod 520;
the anti-sinking damping bowl 510 is convexly cambered.
Through the plurality of anti-sinking damping bowls 510 vertically arranged side by side, when a water body flows through, the water body can flow along the outer walls of the anti-sinking damping bowls 510, negative pressure can be formed at the upper parts of the anti-sinking damping bowls 510 due to the convex arrangement, the upward flow velocity can be greater than the downward flow velocity, and then the water body can flow upwards along the anti-sinking damping bowls 510, so that silt or soil around the anti-sinking damping bowls 510 can be driven to move upwards, and the water body is prevented from being accumulated around the anti-sinking damping bowls 510. Meanwhile, the lower part of the sinking-prevention damping bowl 510 is wide, so that the whole device can be effectively prevented from sinking too deeply, the whole device is ensured to be in a reasonable position for measurement, and meanwhile, the whole device can be ensured to reduce damping in the upward pulling process.
Example 2:
fig. 7 schematically shows another high-resolution ocean magnetic near-bottom precision detection device according to the present invention, which is different from embodiment 1 in that:
the outer side of the first base 400 is provided with a guide assembly 410 in a surrounding manner, the guide assembly 410 comprises a plurality of guide plate bodies 411 which are transversely arranged side by side, two sides of each guide plate body 411 are connected with the first base 400 through a rotating shaft, and each guide plate body 411 can rotate around the rotating shaft.
By arranging the flow guide assembly 410 around the outer side of the first base 400, the water resistance of the whole device can be reduced by the plurality of transversely arranged flow guide plate bodies 411, and the measurement deviation caused by overlarge influence of water flow in the measurement process or the lowering process of the whole device is prevented; in addition, the deflector 411 can generate a downward force when water flows through, so that the whole device is stably arranged at a position to be measured, and the whole device is prevented from deviating in the measuring process; in addition, the geomagnetic measurement assembly 200 can be further protected by arranging the plurality of guide plate bodies 411 which are arranged side by side in the transverse direction, so that impact on the whole device caused by floating partial fragments or impurities in the water body can be prevented, and the measurement precision of the whole device can be further improved; meanwhile, the deflector 411 can play a role in slowing down in the sinking process of the whole device, and the damage of part of parts caused by the fact that the falling speed is too high and the water body is attached is prevented.
Example 3:
as shown in fig. 8, the present invention also provides a fine calibration method.
First, the measured geomagnetic field in the carrier coordinate system can be expressed as
Wherein, the first and the second end of the pipe are connected with each other,
is the magnetic field of the environment and is,
is a carrier magnetic induction matrix and is characterized in that,
namely the carrier magnetic field,
is the residual field. In the test of magnetic calibration of a carrier, known from the specifications
Performing least squares solution iterative computation
And
. In line measurement, by
、
And
calculation of
. If the carrier body is large and the ship speed is high, the influence of the eddy magnetic field is considered as much as possible in the carrier magnetic calibration test and the survey line measurement.
Wherein the content of the first and second substances,
namely, the magnetic calibration test of the carrier needs to be performed
And
in the process of solving the problem together,
is a time derivative.
The transformation matrix between the geodetic and the ship coordinate system, represented by the heading, the roll and the pitch of the carrier, is
Then, the environment earth magnetic field in the earth coordinate system is
Thereby achieving a transformation of the ambient earth magnetic field in these two coordinate systems.
Secondly, we measure and calibrate the three components of the carrier magnetic field. The corresponding magnetic effect is generated due to the ferrous/paramagnetic structure of the scientific ship or other carrier on which the three-component sensor is carried. Since this effect may have an effect of several thousand nt in the measured values, a carrier magnetic field calibration is performed.
In carrier coordinate system, three-component measurement of carrier geomagnetism is carried out
Can be interpreted as the earth magnetic field vector
And a carrier magnetic interference field
The sum of (a) and (b), i.e.:
wherein the subscript's"in the carrier coordinate system.
Magnetic field vector generated by carrier
Can be described as the sum of the residual magnetic field, the induced magnetic field and the eddy currents generated by the steel part of the carrier. These parts constitute the interference field in the measurement signal. Namely:
wherein the content of the first and second substances,
refers to a remanent magnetic field, which is mainly due to remanent magnetization of the steel sheet.
It is an induced magnetic field that magnetizes a steel part of a carrier under the influence of the earth's magnetic field. Under a carrier coordinate system, the corresponding relation of each component of the induction magnetic field is as follows:
wherein
(i, j =1,2,3) refers to inductance;
、
、
representing components of the induced magnetic field in three directions;
、
、
representing components of the earth's magnetic field in three directions, respectively. Equation (4) can be written as:
the least significant disturbance in the measured signal is caused by eddy currents. The current is induced by the movement of the carrier in the earth's magnetic field, thereby creating a magnetic field in the opposite direction to the original magnetic field. This effect is not very obvious because the ship is not sailing very fast. However, it has been incorporated in the model because its influence cannot be completely excluded due to the large magnetic field gradient in the vessel. Under a ship body coordinate system, the corresponding relation of each magnetic field vector component generated by eddy current is as follows:
according to equation (6), the induced ship magnetism generated by eddy currents depends on the surrounding earth magnetic field and ship magnetic interference fields. Substituting equation (2), this matrix form can be written as:
measuring the magnetic field by combining the equations set forth above
Can be produced in the following form:
when the ship body coordinate system is converted into the geodetic coordinate system,
it may be replaced by:
subscript "e"in the geodetic coordinate system
That is, equation (9) is expressed as:
in the actual measurement process, the ship body moves in the geomagnetic field to generate induction current, and the induction current can generate an eddy current magnetic field opposite to the direction of the induction magnetic field. However, when the moving speed of the ship body is not very high, the influence of the eddy magnetic field is relatively small, so that the influence of the eddy magnetic field can be ignored in data processing calculation. So equation (10) becomes:
the corresponding coefficient is solved according to the formula, then the corresponding three component values of the earth magnetic field can be calculated, and finally the total field value is solved through the three component values.
Finally, a carrier magnetic field model resolving and correcting technology can be adopted. In the current carrier coordinate test, a geomagnetic reference field is generally adopted to replace the geomagnetic reference field, so that the carrier magnetic field model calculated by the geomagnetic reference field has larger difference at different time and places, and the difficulty of test calibration is increased.
The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A near-bottom precision detection device of high-resolution ocean magnetic force is characterized by comprising,
the geomagnetic sensor comprises a first base column (100), wherein a geomagnetic measurement component (200) extends coaxially from the bottom end of the first base column (100); a plurality of geomagnetic measurement components (200) are symmetrically arranged on the bottom side of the first foundation column (100) in a surrounding manner, and the geomagnetic measurement components (200) are connected with the first foundation column (100) through first connecting rods (101);
the geomagnetic measurement assembly (200) comprises a measurement base body (210), a concave through groove (211) is formed in the upper end of the measurement base body (210), a rotating ball (220) is arranged in the concave through groove (211) in a matched mode, and the rotating ball (220) can rotate in the concave through groove (211); a first vertical rod (230) is vertically arranged below the rotating round ball (220), a geomagnetic measurement device (231) is arranged at the bottom end of the first vertical rod (230), a weight increasing assembly (232) is arranged on one side, away from the first vertical rod (230), of the geomagnetic measurement device (231), and an adjusting nut (233) is arranged at one end, close to the rotating round ball (220), of the first vertical rod (230);
a hanging base body (110) is arranged at the top end of the first foundation column (100), and a hanging ring (111) is arranged on the hanging base body (110).
2. The high-resolution ocean magnetic near-bottom precision detection device according to claim 1, wherein a ball (221) is arranged between the rotating round ball (220) and the concave through groove (211).
3. The high-resolution ocean magnetic near-bottom precision detection device according to claim 1, wherein a first rotating ring (120) is arranged around the bottom side of the first base column (100), and the first rotating ring (120) is rotatably connected with a first connecting rod (101);
a guide blind hole (102) is formed in the upper end of the first foundation column (100), a first guide column is coaxially arranged in the guide blind hole (102), the top end of the first guide column is fixedly connected with a hanging base body (110), a first connecting column (103) which is perpendicular to the axis of the first foundation column (100) is arranged at the bottom end of the first guide column, the first connecting column (103) penetrates through the first foundation column (100), a through groove (104) is formed in the first foundation column (100) along the axis, and the through groove (104) is used for enabling the first connecting column (103) to slide up and down;
a stretching base body (130) is coaxially arranged in the middle of the first base column (100), a groove ring (131) is arranged in the middle of the stretching base body (130) in the circumferential direction, a second rotating ring (132) is arranged in the groove ring (131), the second rotating ring (132) and the first base column (100) are coaxially arranged, the second rotating ring (132) is rotatably connected with a plurality of second connecting rods (133), the second connecting rods (133) are arranged in one-to-one correspondence with the first connecting rods (101), and moving members (134) are arranged at the end parts of the correspondingly arranged second connecting rods (133) and are in sliding connection with the first connecting rods (101);
the first connecting column (103) connects the top and the bottom of the tensile base body (130).
4. The near-bottom precision detection device of high resolution ocean magnetic force according to claim 3, wherein a second base body (300) is coaxially arranged at the top end of the first base column (100), the second base body (300) comprises a first plate body (310) and a second plate body (320) which are arranged at an interval from top to bottom, and the first plate body (310) is connected with the second plate body (320) through a plurality of second connecting columns (301);
the lower side surface of the second plate body (320) is coaxially connected with the top end of the first base column (100), a plurality of second guide columns (321) are vertically and symmetrically arranged on one side, close to the second plate body (320), of the hanging base body (110), a plurality of guide holes (322) are formed in the second plate body (320) corresponding to the second guide columns (321), and the second guide columns (321) can axially slide up and down along the first base column (100);
the first plate body (310) is provided with a hanging ring hole (311) corresponding to the hanging ring (111).
5. The near-bottom precision detection device of high-resolution ocean magnetic force according to claim 4, wherein a magnetic control switch bin (330) is arranged on the second plate body (320) near the hanging base body (110), a magnet (331) is arranged on one side of the hanging base body (110) opposite to the magnetic control switch bin (330), and the magnet (331) is used for controlling the on-off of the magnetic control switch bin (330).
6. The high-resolution ocean magnetic near-bottom precision detection device according to claim 5, wherein a first substrate (400) is arranged outside the first base column (100), the first substrate (400) is arranged below a second substrate (300), the first substrate (400) is connected with the second substrate (300), and the bottom of the first substrate (400) is arranged below the geomagnetic measurement device (200);
the bottom of the first base body (400) is symmetrically provided with a plurality of anti-trap assemblies (500).
7. The high-resolution ocean magnetic near-bottom precision detection device according to claim 6, wherein the anti-sinking assembly (500) comprises a plurality of anti-sinking damping bowls (510) which are vertically arranged side by side, and the plurality of anti-sinking damping bowls (510) are connected in a penetrating way through a third connecting rod (520);
the anti-sinking damping bowl (510) is arranged in a convex manner.
8. The high-resolution ocean magnetic near-bottom precision detection device according to claim 7, wherein a flow guide assembly (410) is arranged around the outer side of the first base body (400), the flow guide assembly (410) comprises a plurality of flow guide plate bodies (411) arranged transversely side by side, two sides of each flow guide plate body (411) are connected with the first base body (400) through rotating shafts, and the flow guide plate bodies (411) can rotate around the rotating shafts.
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| CA828321A (en) * | 1969-11-25 | P. E. Cagniard Louis | Method and apparatus for submarine magneto-telluric survey | |
| US6114855A (en) * | 1998-01-23 | 2000-09-05 | Tovarischestvo S Ogranichennoi | Apparatus for prospecting for geological formation |
| CN101793852B (en) * | 2010-02-09 | 2012-07-25 | 北京航空航天大学 | Multiple ring electrode array imaging sensor |
| TWI452263B (en) * | 2010-04-16 | 2014-09-11 | Alps Electric Co Ltd | Geomagnetic detection device |
| RU2510051C1 (en) * | 2012-10-29 | 2014-03-20 | Андрей Владимирович ТУЛУПОВ | Bottom station for marine geophysical survey |
| CN103389517A (en) * | 2013-07-30 | 2013-11-13 | 高建东 | High-accuracy geomagnetic vector measurement method and device |
| KR101438571B1 (en) * | 2013-11-25 | 2014-09-12 | 한국지질자원연구원 | Induction-type broadband 3-component borehole magnetic field measurement sensor and borehole electromagnetic tomography method using therof |
| US10132947B2 (en) * | 2015-10-19 | 2018-11-20 | Pgs Geophysical As | Marine data acquisition node |
| CN106501861B (en) * | 2016-10-31 | 2018-06-01 | 电子科技大学 | A kind of small intelligent offshore earthquake electromagnetic data acquisition system |
| CN207440306U (en) * | 2017-11-10 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of buried abandoned well detection device |
| CN108873086B (en) * | 2018-06-05 | 2019-09-27 | 哈尔滨工程大学 | A method of using geomagnetic total field gradient array to locating magnetic objects |
| CN108828471B (en) * | 2018-06-11 | 2020-02-07 | 中国科学院地质与地球物理研究所 | Multi-component submarine magnetic field measurement method and device |
| CN210605014U (en) * | 2019-08-08 | 2020-05-22 | 中国地质大学（武汉） | Geomagnetic full-factor sensor |
| CN111708099A (en) * | 2020-06-17 | 2020-09-25 | 中国地质大学（武汉） | Shallow earth surface geological comprehensive geophysical multi-parameter remote sensing composite system and acquisition method |
| CN114200531B (en) * | 2022-02-16 | 2022-05-17 | 自然资源部第二海洋研究所 | Multi-component submarine magnetic field measurement method and device |
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