CN208207239U - A kind of three-component marine gravity magnetic force duplex measurement device - Google Patents
A kind of three-component marine gravity magnetic force duplex measurement device Download PDFInfo
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- CN208207239U CN208207239U CN201820497304.7U CN201820497304U CN208207239U CN 208207239 U CN208207239 U CN 208207239U CN 201820497304 U CN201820497304 U CN 201820497304U CN 208207239 U CN208207239 U CN 208207239U
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Abstract
The utility model discloses a kind of three-component marine gravity magnetic force duplex measurement devices, and including three-component marine gravity magnetometer and positioned at the stabilized platform of its bottom, the stabilized platform bottom is equipped with dynamic balancer；The three-component marine gravity magnetometer includes the analog to digital conversion circuit and data storage circuitry positioned at instrument internal upper part, the three-component gravity sensor at middle part in instrument, three-component attitude transducer below three-component gravity sensor, and in instrument bottom three-component magnetometric sensor, the outer top setting data display unit of the instrument and signal indicating device, thermohaline is installed on the stabilized platform and visits instrument, measuring device disclosed in the utility model can be with synchronous acquisition three-component marine gravity magnetic force complex data, measure data precision is high, accuracy is good, more accurate data are provided to subsequent scientific research to support.
Description
Technical field
The utility model relates to technical field of geophysical exploration, in particular to a kind of three-component marine gravity magnetic force is compound
Measuring device.
Background technique
Sea gravity measurement is one of marine geophysics measurement method, is the work for measuring sea area acceleration of gravity.Sea
The progress of foreign gravimetric technique and being widely used for gravity achievement increasingly prove marine gravity data in geodesic survey
, the research and military significance of geoscience, Marine Sciences, space technology.Sufficient gravity survey data, can be with
The shape for determining geoid is sought, provides gravity anomaly distribution characteristics and changing rule, and then study geological structure, earth's crust knot
Structure, earth form and exploration seabed mineral etc..Continental gravity data data are more abundant at this stage, marine gravity data deficiencies, and
Ocean area is big, once there are sufficient marine gravity data, so that it may obtain the shape of more accurate global geoid, this
It is all very important to Ocean Surveying itself, and the research figure of the earth.
Sea gravity measurement is the process that the initial data measured to instrument introduces every correction calculated gravity anomaly.Observation
Gravity value is after introducing necessary correction and the deviation of normal gravity is known as gravity anomaly.There are many project of correction, but can return
Become two classes: one kind such as E Tewosi correction, drift correction, is introduced absolutely to obtain correction made by observed gravity value
To gravity value etc.；Another kind of is to obtain correction attached by gravity anomaly, such as free-air correction, Bouguer correction, landform school
It just and isostatic correction, is finally normal field reduction.
Marine magnetic survey is one of marine geophysical survey method, is to have different magnetism with rock stratum under seabed simultaneously
Generating magnetic field of different sizes is principle, at sea carries out earth magnetic field measurement.When early stage, exploration once uses saturation type magnetic force
Instrument, currently, mostly continuously being measured earth's magnetic field sum vector using variam, optical pumped magnetometer or marine gradient former etc.
Absolute value and with three-component magnetometer measurement earth's magnetic field three components.Marine magnetic survey is surveyed by magnetometer across the sea
The method for measuring absolute force.It is premised on the magnetic contrast of rock, according to the feature and its regularity of distribution of magnetic anomaly field,
Marine rock magnetism inhomogeneities is solved, and then infers that crustal structure and construction, ocean floor generates and history of evolution, and reconnoitre continent
The distribution of mineral deposits of border district.Marine magnetic survey can be divided into area measurement and route survey.In the oil finding of continental shelf area,
For the feature for finding out regional structure and local structure, using area measurement；In big midocean, mostly use wide spacing route survey and
Small-scale area measurement, to find out the spreading direction of striped magnetic anomaly and the magnetic signature of magnetic seamount.Marine magnetism is surveyed
Proton-precession magnetometer is widely used in amount.Proton magnetometer measures Geomagnetic Total Field value T, including caused by uniform magnetized sphere
Magnetic field, continent exception, region and local anomaly, ship magnetic field influence and day varying magnetic field influences.Reflect upper crust knot in order to obtain
The magnetic field of structure and construction is abnormal, must carry out normal field reduction, the correction of ship magnetic and diurnal correction to observation.
There are many disadvantages, such as ocean weight for current a few money marine gravitometers and sea magetometer currently in use in the world
Power instrument and sea magetometer are marine gravity field independent and ocean magnetic field measuring instrument, and marine gravitometer can only measure weight
The vertical component of power, the horizontal disturbance acceleration and vertical interference acceleration capabilities of low, the anti-ship of sensor accuracy are poor, Yi Jizhen
Dynamic equal have a significant impact to instrument etc..
Utility model content
In order to solve the above technical problems, the utility model provides a kind of three-component marine gravity magnetic force duplex measurement dress
It sets, with achieve the purpose that can be with synchronous acquisition three-component marine gravity magnetic force complex data.
In order to achieve the above objectives, the technical solution of the utility model is as follows:
A kind of three-component marine gravity magnetic force duplex measurement device, including three-component marine gravity magnetometer and be located at its bottom
The stabilized platform in portion, the stabilized platform bottom are equipped with dynamic balancer；The three-component marine gravity magnetometer includes
Positioned at the analog to digital conversion circuit and data storage circuitry of instrument internal upper part, in instrument middle part three-component gravity sensor,
Three-component attitude transducer below three-component gravity sensor, and the three-component magnetic force of bottom senses in instrument
Device, the outer top of the instrument are arranged data display unit and signal indicating device, thermohaline are equipped on the stabilized platform and visits instrument.
In above scheme, the three-component gravity sensor includes cylindrical shell, and the rectangular-shape in shell
Fixing body, X-axis sensing module, Y-axis sensing module and Z axis are separately installed on three adjacent sides of the fixing body and is passed
Feel module.
In above scheme, the X-axis sensing module includes the X-axis MEMS gravity sensitive chip being fixed on pcb board and weak
Signal detection IC chip, the Y-axis sensing module include the Y-axis MEMS gravity sensitive chip that is fixed on pcb board and
Testing of Feeble Signals IC chip, the Z axis sensing module include the Z axis MEMS gravity sensitive chip being fixed on pcb board
With Testing of Feeble Signals IC chip, the X-axis MEMS gravity sensitive chip, Y-axis MEMS gravity sensitive chip and Z axis MEMS
Gravity sensitive chip is distributed in space in three-dimensional orthogonal.
In above scheme, the bottom of the cylindrical shell is equipped with pedestal, and the side of the pedestal is equipped with for installation
Screw thread, the bottom of the pedestal are set there are four mounting hole.
In above scheme, the inside of the cylindrical shell is equipped with the screw thread cooperated with fixing body, and top is equipped with and can power
The through-hole of source and signal conveying.
In above scheme, analog-digital conversion circuit as described is 9 channel analog to digital conversion circuits.
In above scheme, the dynamic balancer includes gyroscope, precession device and torque-motor.
In above scheme, the X-axis MEMS gravity sensitive chip, Y-axis MEMS gravity sensitive chip and Z axis MEMS gravity are passed
Sense chip is based on deep silicon etching technology, high-accuracy capacitor displacement sensing technology and Technique of Weak Signal Detection in the gravity of one
Sensing chip.
In above scheme, it is highly 70mm that the basal diameter of the cylindrical shell, which is 45mm,.
Through the above technical solutions, three-component marine gravity magnetic force duplex measurement device provided by the utility model uses three
Component gravity sensor carries out the gravity measurement of three dimensions, is surveyed using the magnetic field that three-component magnetometric sensor carries out three dimensions
Amount carries out the attitude rectification of three dimensions using three-component attitude transducer, and measure data precision is high, and accuracy is good, to subsequent
Scientific research more accurate data be provided support.Three axis gravity sensitive chips of the device are based on deep silicon etching technology, high-precision
Capacitive displacement sensing technology and Technique of Weak Signal Detection are in the gravity sensitive chip of one, small in size, high sensitivity, noise
Low, the process-cycle is short, manufacturing cost is low.By the support of stabilized platform, stability is good for bottom, and the horizontal disturbance of anti-ship accelerates
Degree and vertical interference acceleration capabilities are strong, and shock resistance is strong.
The three-component marine gravity magnetic force duplex measurement device that the utility model is announced can be same on seabed or sea
Position is synchronous to carry out three-component gravity and mgnetic observations, and three points for carrying out same position can also be synchronized on mobile surveying vessel
Measure gravity and mgnetic observations.The three-component gravity and mgnetic observations that position progress is fixed on seabed or sea can be studied same
The variation of the gravity of position synchronization and the vertical component of magnetic force and horizontal component on different seabeds or sea position,
The synchronous three-component gravity carried out and mgnetic observations can study the following three-component gravity in sea and magnetic force on mobile surveying vessel
The variation of vertical component and horizontal component on ship ship trajectory.The variation is by ground lower density and underground magnetism heterogeneous body
Caused by the variation of the vertical and lateral position of (fluid in rock or blowhole).
Ocean three-component gravity can be used to study the variation of the three-component gravitational field around measurement point with the variation of depth,
Ocean three-component magnetic force can be used to study the variation in the three-component magnetic field around measurement point with the variation of depth.Pass through ocean three
The variation of component gravitational field calculates the variation for being inferred to around measurement point fluid density in rock in a certain range or blowhole,
It can be used for survey region geological structure, exploration Solid Mineral and petroleum resources and the oil gas field for entering the productive life carried out
The long-term dynamics of underground fluid changes in distribution monitor.According to the spy of the variation in the three-component magnetic field around measurement point and magnetic anomaly field
Sign and its regularity of distribution, it will be appreciated that marine rock magnetism inhomogeneities, and then infer crustal structure and construction, ocean floor generate and
History of evolution, and reconnoitre the distribution of mineral deposits in continental margin area.In addition, to the same position ocean three-component gravity measured
Data and three-component magnetic field data carry out mutually constraint inverting or joint inversion, can obtain certain around more structurally sound measuring point
In range in rock or blowhole fluid density and rock magnetic distribution and changing rule, the single earth can be greatly reduced
The nonuniqueness of physical data processing explanation results.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.
Fig. 1 shows for a kind of three-component marine gravity magnetic force duplex measurement apparatus structure disclosed in the utility model embodiment
It is intended to；
Fig. 2 is three-component gravity sensor perspective view disclosed in the utility model embodiment；
Fig. 3 is three-component gravity sensor fractionation structural representation disclosed in the utility model embodiment；
Fig. 4 is MEMS gravity sensitive chip manufacture status diagram disclosed in the utility model embodiment.
In figure, 1, three-component marine gravity magnetometer；2, stabilized platform；3, dynamic balancer；4,9 channel analog-to-digital conversion
Circuit and data storage circuitry；5, three-component gravity sensor；6, three-component attitude transducer；7, data display unit and signal
Instruction device；8, shell；9, fixing body；10, pcb board；11, X-axis MEMS gravity sensitive chip；12, the integrated electricity of Testing of Feeble Signals
Road (ASIC) chip；13, Y-axis MEMS gravity sensitive chip；14, Z axis MEMS gravity sensitive chip；15, pedestal；16, screw thread；
17, mounting hole；18, through-hole；19, three-component magnetometric sensor；20, thermohaline visits instrument.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
Three-component marine gravity magnetic force duplex measurement device as shown in Figure 1, including 1 He of three-component marine gravity magnetometer
Stabilized platform 2 positioned at its bottom, 2 bottom of stabilized platform are equipped with dynamic balancer 3, and dynamic balancer 3 includes gyro
Instrument, precession device and torque-motor are equipped with thermohaline on stabilized platform 2 and visit instrument 20, for measure different depth seawater water temperature and
Salinity.
Three-component marine gravity magnetometer 1 includes 9 channel analog to digital conversion circuits and the data storage positioned at instrument internal upper part
Circuit 4, the three-component gravity sensor 5 at middle part, the three-component posture positioned at 5 lower section of three-component gravity sensor in instrument
Sensor 6, and in instrument bottom three-component magnetometric sensor 19.Three-component attitude transducer 6 is used for synchronous recording
The three-component attitude data of 5 data acquiring location of three-component gravity sensor, for the ocean three-component gravity number being recorded
According to being handled.Three-component magnetometric sensor 19 is used for the three-component magnetic field data of synchronous recording same position.The outer top of instrument
Data display unit and signal indicating device 7, the working condition for each component of display instrument are set.
Three-component gravity sensor 5 as shown in Figure 2, including cylindrical shell 8, and the rectangular-shape in shell 8
Fixing body 9, X-axis sensing module, Y-axis sensing module and Z axis sensing are separately installed on three adjacent sides of fixing body 9
Module.The basal diameter of cylindrical shell 8 is 45mm, is highly 70mm.
As shown in figure 3, X-axis sensing module includes the X-axis MEMS gravity sensitive chip 11 and weak letter being fixed on pcb board 10
Number detection integrated circuit (ASIC) chip 12, Y-axis sensing module includes the Y-axis MEMS gravity sensitive core being fixed on pcb board 10
Piece 13 and Testing of Feeble Signals integrated circuit (ASIC) chip 12, Z axis sensing module include the Z axis MEMS being fixed on pcb board 10
Gravity sensitive chip 14 and Testing of Feeble Signals integrated circuit (ASIC) chip 12, X-axis MEMS gravity sensitive chip 11, Y-axis MEMS
Gravity sensitive chip 13 and Z axis MEMS gravity sensitive chip 14 are distributed in space in three-dimensional orthogonal.
The bottom of cylindrical shell 8 is equipped with pedestal 15, and the side of pedestal 15 is equipped with the screw thread 16 for installation, pedestal 15
Bottom is set there are four mounting hole 17.The inside of cylindrical shell 8 is equipped with the screw thread cooperated with fixing body 9, and top is equipped with and can power
The through-hole 18 of source and signal conveying.
X-axis MEMS gravity sensitive chip 11, Y-axis MEMS gravity sensitive chip 13 and Z axis MEMS gravity sensitive chip 14 are
Based on deep silicon etching technology, high-accuracy capacitor displacement sensing technology and Technique of Weak Signal Detection in the gravity sensitive core of one
Piece.As shown in figure 4, the gravity sensing element of chip is silicon substrate integral spring-mass system, pass through micro-nano technology technique pair
Silicon Wafer carries out whole high collimation deep etching and is formed.X-axis MEMS gravity sensitive chip, Y-axis MEMS gravity sensitive chip and Z
The once etching molding on one piece of silicon wafer of axis MEMS gravity sensitive chip, in use, being separated, is installed on pcb board.It is sensitive
The size of gravity inspection quality block plays a decisive role to the height of instrument mechanical thermal noise in unit, and deep silicon process technology can
To process thicker silicon quality bulk (500 μm), comparing conventional surface technique (10~100 μm) can obtain in same area
Obtain bigger mass block.This is also the principal element that this gravity sensing element can reach more low noise namely higher precision.Separately
Outside, the design and processing of the sensing unit make full use of silicon materials more outstanding than metal mechanical performance, stability and can be big
In batches, the advantage of high-accuracy processing can also be done under the premise of reaching performance suitable with metal spring relative gravity sensor
To smaller volume, shorter process-cycle and lower cost.The displacement that sensing unit is generated by Gravity changer is by chip
Integrated high-precision variable area formula array differential capacitance displacement sensor perception, and voltage letter is converted into through Infirmness signal detecting circuit
Number.
The acquisition and storage circuit of the three-component gravimetric data of each three-component gravity sensor 5 and its auxiliary is located next to
The three-component attitude transducer 6 of three-component gravity sensor and the three-component magnetometric sensor 19 under it can be assembled into three points
Measure marine gravity magnetometer.
If measured using three-component marine gravity magnetometer on sea and seabed in same place, can not only obtain
The three-component gravity value of each three-component gravity sensor position is taken, and sea and seabed can be obtained by simply calculating
Three-component gravity sensor between vertical gravitational component gradient value.If in different seas or different sub-sea locations
It is upper measured using ocean three-component gravity and magnetic force recombination optics, not only available each three-component gravity sensor position
Three-component gravity value, and can by simply calculate obtain every two it is adjacent and be in same level three-component gravity
The gradient value of the horizontal gravity component along side line direction between sensor.The each three-component in same place can also be obtained simultaneously
The three-component magnetic field value of magnetometric sensor position, and the three-component magnetic field on sea and seabed can be obtained by simply calculating
The gradient value of perpendicular magnetic component between sensor.If using three points on different seas or different sub-sea locations
Amount marine gravity magnetometer measures, not only the three-component magnetic field value of available each three-component magnetometric sensor position,
And it can be obtained between the adjacent and three-component magnetometric sensor in same level of every two by simply calculating
Horizontal component ofmagnetic field gradient value along side line direction.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of three-component marine gravity magnetic force duplex measurement device, which is characterized in that including three-component marine gravity magnetometer
With the stabilized platform for being located at its bottom, the stabilized platform bottom is equipped with dynamic balancer；The three-component marine gravity
Magnetometer include positioned at instrument internal upper part analog to digital conversion circuit and data storage circuitry, in instrument middle part three-component weight
Force snesor, the three-component attitude transducer below three-component gravity sensor, and three points of bottom in instrument
Magnetometric sensor, the outer top setting data display unit of the instrument and signal indicating device are measured, is installed on the stabilized platform
There is thermohaline to visit instrument.
2. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 1, which is characterized in that described three
Component gravity sensor includes cylindrical shell, and the fixing body of the rectangular-shape in shell, and three of the fixing body
X-axis sensing module, Y-axis sensing module and Z axis sensing module are separately installed on adjacent side.
3. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 2, which is characterized in that the X
Axis sensing module includes the X-axis MEMS gravity sensitive chip and Testing of Feeble Signals IC chip being fixed on pcb board, described
Y-axis sensing module includes the Y-axis MEMS gravity sensitive chip and Testing of Feeble Signals IC chip being fixed on pcb board, institute
Stating Z axis sensing module includes the Z axis MEMS gravity sensitive chip and Testing of Feeble Signals IC chip being fixed on pcb board,
The X-axis MEMS gravity sensitive chip, Y-axis MEMS gravity sensitive chip and Z axis MEMS gravity sensitive chip are in space in three-dimensional
Omnidirectional distribution.
4. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 2, which is characterized in that the circle
The bottom of cylindrical shell is equipped with pedestal, and the side of the pedestal is equipped with the screw thread for installation, and the bottom of the pedestal is equipped with four
A mounting hole.
5. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 2, which is characterized in that the circle
The inside of cylindrical shell is equipped with the screw thread that cooperate with fixing body, and top is equipped with can the through-hole that conveys of power supply source and signal.
6. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 1, which is characterized in that the mould
Number conversion circuit is 9 channel analog to digital conversion circuits.
7. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 1, which is characterized in that described dynamic
Thrust balancing device includes gyroscope, precession device and torque-motor.
8. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 3, which is characterized in that the X
Axis MEMS gravity sensitive chip, Y-axis MEMS gravity sensitive chip and Z axis MEMS gravity sensitive chip are based on deep silicon etching skill
Art, high-accuracy capacitor displacement sensing technology and Technique of Weak Signal Detection are in the gravity sensitive chip of one.
9. a kind of three-component marine gravity magnetic force duplex measurement device according to claim 2, which is characterized in that the circle
The basal diameter of cylindrical shell is 45mm, is highly 70mm.
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| CN201820497304.7U CN208207239U (en) | 2018-04-09 | 2018-04-09 | A kind of three-component marine gravity magnetic force duplex measurement device |
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| CN201820497304.7U CN208207239U (en) | 2018-04-09 | 2018-04-09 | A kind of three-component marine gravity magnetic force duplex measurement device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445547A (en) * | 2018-04-09 | 2018-08-24 | 山东蓝海可燃冰勘探开发研究院有限公司 | A kind of three-component marine gravity magnetic force duplex measurement device |
| CN109870734A (en) * | 2019-03-08 | 2019-06-11 | 中国石油天然气集团有限公司 | Three-component gravity gradient field, three-component magnetic gradient field acquisition device and method |
| CN113625338A (en) * | 2021-08-11 | 2021-11-09 | 成都理工大学 | Seismic weak signal extraction method based on difference |
-
2018
- 2018-04-09 CN CN201820497304.7U patent/CN208207239U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445547A (en) * | 2018-04-09 | 2018-08-24 | 山东蓝海可燃冰勘探开发研究院有限公司 | A kind of three-component marine gravity magnetic force duplex measurement device |
| CN109870734A (en) * | 2019-03-08 | 2019-06-11 | 中国石油天然气集团有限公司 | Three-component gravity gradient field, three-component magnetic gradient field acquisition device and method |
| CN109870734B (en) * | 2019-03-08 | 2024-05-28 | 中国石油天然气集团有限公司 | Three-component gravity gradient field, three-component magnetic gradient field acquisition device and method |
| CN113625338A (en) * | 2021-08-11 | 2021-11-09 | 成都理工大学 | Seismic weak signal extraction method based on difference |
| CN113625338B (en) * | 2021-08-11 | 2023-07-11 | 成都理工大学 | Differential-based seismic weak signal extraction method |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190116 Address after: 264207 Zhongchuang Space on the 2nd floor of Binhai Road North and Longhai Road East Blue Pioneer Valley K District, Nanhai New Area, Weihai City, Shandong Province Co-patentee after: WEIHAI ZHIHUI MARINE TECHNOLOGY Co.,Ltd. Patentee after: SHANDONG LANHAI COMBUSTIBLE ICE EXPLORATION AND DEVELOPMENT RESEARCH INSTITUTE Co.,Ltd. Address before: 264207 Zhongchuang Space on the 2nd floor of Binhai Road North and Longhai Road East Blue Pioneer Valley K District, Nanhai New Area, Weihai City, Shandong Province Patentee before: SHANDONG LANHAI COMBUSTIBLE ICE EXPLORATION AND DEVELOPMENT RESEARCH INSTITUTE Co.,Ltd. |
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Granted publication date: 20181207 |