CN206696448U - Ocean controllable source time-frequency electromagnetic data acquisition system - Google Patents
Ocean controllable source time-frequency electromagnetic data acquisition system Download PDFInfo
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- CN206696448U CN206696448U CN201720255741.3U CN201720255741U CN206696448U CN 206696448 U CN206696448 U CN 206696448U CN 201720255741 U CN201720255741 U CN 201720255741U CN 206696448 U CN206696448 U CN 206696448U
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Abstract
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data acquisition system.Wherein, the system includes：Electric dipole current source and cable；Wherein, electric dipole current source, controllable source time-frequency electric field data and controllable source time-frequency magnetic field data are produced for being excited in marine site to be measured；It is provided with multiple electric-field sensors with electrode on cable, adjacent two electric-field sensor on same cable is used to gather the controllable source time-frequency electric field data along cable direction；It is provided between two adjacent electric-field sensors：Three-component magnetic field sensor and three-component attitude transducer, it is respectively used to gather controllable source time-frequency magnetic field data and attitude data；Electric layer is provided with cable, for providing power supply.Because the system is powered using electric layer to the electronic device on cable, the interference due to being brought using large power supply is avoided, the not high technical problem of the ocean controllable source time-frequency electromagnetic data degree of accuracy for solve the existing power supply trouble of existing apparatus, gathering.
Description
Technical field
The application is related to technical field of geophysical exploration, more particularly to a kind of ocean controllable source time-frequency electromagnetic data collection
System.
Background technology
During geophysical exploration, when especially carrying out geological prospecting research to subsea strata, it is often necessary to adopt
Collect marine site to be measured and neutralize the ocean controllable source time-frequency electromagnetic data reflected up in the following medium in seabed.And then can be according to adopting
Collect obtained ocean controllable source time-frequency electromagnetic data, the electrical property feature of geologic structure and reservoir to marine site seabed to be measured divides
Analysis and research, prepare for follow-up Deep Sea Minerals exploration and development.
Existing ocean controllable source time-frequency electromagnetic data acquisition method can be generally divided into three kinds.One kind is that independent ocean can
Control source time-frequency electromagnetic data acquisition station is sunk to the bottom, excitaton source drags.Adopted for example, having laid ocean controllable source time-frequency electromagnetic data in advance
Collection station, then drags controllable source time-frequency electric field excitation source above acquisition station, and then can complete seabed controllable source electricity simultaneously
The collection of magnetic and magnetotelluric data.One kind is that ocean controllable source time-frequency electromagnetic data collection cable swashs with frequency electromagnetic field during controllable source
Hair cable synchronously drags in the seawater.Specifically, an electricity along cable direction can be typically gathered by existing business equipment
Field component, but any magnetic-field component data can not be gathered.In addition, its electrode along cable directional spreding is nor be uniformly distributed
's.For example, the distribution density of the electrode on the cable near acquisition vessel is relative larger, and away from the electricity at acquisition vessel
The distribution density of electrode on cable it is then relatively sparse.In addition, this method is often only capable of carrying out time-domain or single frequency respectively
The controllable source time-frequency electric field data collecting work of the frequency domain of point.Practice of construction demand can not be met well.Also one kind is
Cable sinks to the bottom laying, excitaton source drags for ocean controllable source time-frequency electromagnetic data collection.For example, sea-floor electromagnetic cable (EM OBC-
ElectroMagnetic Ocean Bottom Cable) by cable boat be first launch be routed to seabed, then by emission source ship
Tow underwater controllable electric power and (launch controllable source time-frequency electromagnetism number away from moving ahead in a certain distance of seabed and being powered into seawater
According to), by launching and laying in advance to the ocean controllable source time-frequency electromagnetic data in the electromechanical cable collection seabed in seabed.Data acquisition
After end, cable boat recovery sea-floor electromagnetic cable, dispensing is routed to new measurement work area, and then repeatedly controllable source time-frequency in seabed is electric
The data acquisition operation of magnetic data.
When it is implemented, above-mentioned three kinds of oceans controllable source time-frequency electromagnetic data acquisition method is often required for from towing cable (line
Cable) outside lay power line in addition the ocean controllable source time-frequency electromagnetic data collecting device on towing cable be powered.For example,
Power supply on usually used collection boat deck is electric to the ocean controllable source time-frequency on towing cable along towing cable since the initiating terminal of towing cable
Magnetic data collecting unit is powered.But used towing cable is generally all up to dozens of kilometres during specific implementation, and in towing cable
Supply lines itself certain internal resistance also be present.Therefore, the above method can cause supply voltage on towing cable and current values with
Leave the increase of the distance of power supply and gradually reduce.In order to ensure that the collecting unit in towing cable tail end has enough operating voltages
And operating current, the initiating terminal generally required in towing cable provide the voltage and current of relatively high power as power supply.However, larger work(
The voltage and current of rate can interfere and influence on the electronic device being distributed along cable again, and then the ocean for influenceing to collect can
The precision of control source time-frequency electromagnetic data.Therefore, existing pull-type or sinking type ocean controllable source time-frequency electromagnetic data collection cable
Method, power supply trouble high-power over long distances, the ocean controllable source time-frequency electromagnetic data collected during specific implementation often be present
The technical problem of poor accuracy.
In view of the above-mentioned problems, not yet propose effective solution at present.
Utility model content
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data acquisition system, to solve existing sea
High-power power supply trouble over long distances in foreign controllable source time-frequency electromagnetic data acquisition method be present, during the ocean controllable source collected
The technical problem of frequency electromagnetic data poor accuracy.
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data acquisition system, including：
Electric dipole current source and one or more cable；
Wherein, the electric dipole current source, excitaton source time-frequency electromagnetic signal is produced in the seawater, in marine site to be measured and sea
Frequency electromagnetic field when producing controllable source is excited in the following medium in bottom, wherein, frequency electromagnetic field includes controllable source time-frequency during the controllable source
Electric field data and three-component controllable source time-frequency magnetic field data；
Excited in the seawater and in the following medium in seabed and produce the upward reflection of controllable source time-frequency electromagnetic field signal and dragged
Drag ocean controllable source time-frequency electromagnetic data collection cable reception in the seawater；
Multiple electric-field sensors with electrode are provided with every cable, wherein, it is adjacent on same cable
Two electric-field sensors are used to gather the controllable source time-frequency electric field data along cable direction；It is adjacent on the same cable
Three-component magnetic field sensor and three-component attitude transducer are provided with cable between two electric-field sensors, wherein：It is described
Three-component magnetic field sensor, for gathering the three-component controllable source time-frequency magnetic field data；The three-component attitude transducer, use
In collection attitude data；
Electric layer is provided with every cable, wherein, the electric layer is used for for the electric field on the cable
Sensor, the three-component magnetic field sensor and the three-component attitude transducer provide the power supply needed for work.
In one embodiment, in the case where the system includes a plurality of cable, a plurality of cable is symmetrical and flat
Row is set, wherein, relative two electric-field sensor being arranged in adjacent cables is used to gather the controllable of vertical cables direction
Source time-frequency electric field data.
In one embodiment, the spacing in a plurality of cable between adjacent cables is more than or equal to 25 meters.
In one embodiment, the spacing between adjacent two electric-field sensor on the same cable is 10 meters
To 50 meters；Spacing between the three-component magnetic field sensor and adjacent two electric-field sensors is more than or equal to 5 meters of (three-components
Magnetic field sensor is located among two adjacent electric-field sensors)；The three-component attitude transducer and adjacent three-component magnetic
It is smaller than between field sensor equal to 2 meters.
In one embodiment, the electrode is unpolarizable electrode.
In one embodiment, the unpolarizable electrode includes at least one of：Copper sulfate electrode, silver nitrate electricity
Pole, platinum electrode.
In one embodiment, the three-component magnetic field sensor is coil type three-component magnetic field sensor, or, magnetic flux
Gate-type three-component magnetic field sensor.
In one embodiment, the electric layer is made up of friction nanometer generating flexible material.
In one embodiment, the length of the electric dipole current source is 300 meters to 500 meters.
In one embodiment, the controllable source time-frequency electromagnetic data is the controllable source time-frequency electromagnetic data of time-domain,
And/or the controllable source time-frequency electromagnetic data of frequency domain.
In one embodiment, protective layer is additionally provided with outside the electric layer, wherein, the protective layer draws material by Kev
It is made.
In one embodiment, the system also includes electrical energy storage device, the electrical energy storage device and the hair
Electric layer is connected, for storing electric energy caused by the electric layer.
In one embodiment, the system also includes towing cable ship, the towing cable ship and the electric dipole current source and institute
Cable is stated to be connected.
In the application embodiment, by setting electric layer in the outer surface of cable, the mechanical energy of cable is changed into
Electric energy is powered to cable, is avoided and is set large power supply Line To Line cable to be powered in addition, solves existing ocean
Power and bother present in controllable source time-frequency electromagnetic data acquisition method, the ocean controllable source time-frequency electromagnetic data collected is accurate
The technical problem of exactness difference, has reached the accurate, technique effect of highly effective gathering ocean controllable source time-frequency electromagnetic data.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the composition structure chart according to the ocean controllable source time-frequency electromagnetic data acquisition system of the application embodiment；
Fig. 2 is illustrated according to the cable structure of the ocean controllable source time-frequency electromagnetic data acquisition system of the application embodiment
Figure；
Fig. 3 is the scene signal of the ocean controllable source time-frequency electromagnetic data acquisition system provided using the application embodiment
Figure；
Brief description of the drawings：1st, towing cable ship, 2, electric dipole current source, 3 and 5, electric-field sensor, 4, three-component magnetic field sensor, 6,
Three-component attitude transducer, 7, electric layer, 8, protective layer.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
In view of existing ocean controllable source time-frequency electromagnetic data acquisition method, generally require separately to set in the initiating terminal of cable
Electronic device on power supply Line To Line cable is powered.When it is implemented, again because the cable used is often long, one
As be all up to dozens of kilometres；And the supply lines of cable inner itself has certain resistance, therefore the voltage and current on cable
It can reduce with the increase for the distance for leaving power supply.In order to ensure the collecting unit to cable tail end, such as three-component
The normal operating voltage of the offer such as attitude transducer, electric-field sensor and three-component magnetic field sensor and operating current, it will usually
Each collecting unit on cable is powered from powerful power supply.However, due to powerful voltage and current one
As can produce obvious controllable source time-frequency electromagnetic data, interference profile is adopted in the ocean controllable source time-frequency electromagnetic data of cable
Collect unit, and then the electromagnetic data precision that collecting unit collects can be influenceed.Finally, existing ocean controllable source time-frequency is caused
Electromagnetic data acquisition method is when it is implemented, often in the presence of power supply trouble, the ocean controllable source time-frequency electromagnetic data collected
The technical problem of poor accuracy.Basic reason for producing above-mentioned technical problem, the application considers can be online along cable
Cable outer surface set electric layer, and then can by electric layer from be about to cable with seawater swing or in the seawater towing move ahead when
Mechanical energy change into electric energy, then the collecting unit on cable is powered.So as to avoid due to using high-power electricity
Source solves to adopt present in existing ocean controllable source time-frequency electromagnetic data acquisition method to electromagnetic interference caused by collecting unit
Collect the technical problem of obtained ocean controllable source time-frequency electromagnetic data poor accuracy.
Based on above-mentioned thinking thinking, the application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data collection system
System.Its basic structure forms, and refers to the composition structure chart and Fig. 2 of Fig. 1 ocean controllable source time-frequency electromagnetic data acquisition system
Cable structure schematic diagram.The ocean controllable source time-frequency electromagnetic data acquisition system that the application embodiment provides, specifically can be with
Including：The ocean controllable source time-frequency electromagnetic data collection cable (i.e. cable) of electric dipole current source 2 and one or more；
Wherein, the electric dipole current source 2, specifically can be used for producing excitaton source time-frequency electromagnetic signal in the seawater, it is described
Excitaton source time-frequency electromagnetic signal is used to excite frequency electromagnetic field when producing controllable source in the following medium in marine site to be measured and seabed, its
In, frequency electromagnetic field includes controllable source time-frequency electric field data and controllable source time-frequency magnetic field data during the controllable source；In the seawater
The reflection and towed ocean in the seawater can upwards of controllable source time-frequency electromagnetic field signal is produced with being excited in the following medium in seabed
The time-frequency electromagnetic data collection cable reception collection of control source；
Multiple electric-field sensors 3 with electrode are provided with every cable, wherein, it is adjacent on same cable
The specific controllable source time-frequency electric field data that can be used for collection along cable direction of two electric-field sensors 3；In the same cable
On adjacent two electric-field sensor 3 between cable on be provided with three-component magnetic field sensor 4 and three-component posture sensing
Device 6, wherein：The three-component magnetic field sensor 4, it specifically can be used for gathering the three-component controllable source time-frequency magnetic field data；
The three-component attitude transducer 6, it specifically can be used for gathering three-component attitude data；
Electric layer 7 is provided with every cable, wherein, the electric layer 7 specifically can be used for on the cable
The electric-field sensor 3, the three-component magnetic field sensor 4 and the three-component attitude transducer 6 provided needed for work
Power supply.
In the present embodiment, in order to measure the ocean controllable source time-frequency electromagnetic data in marine site to be measured exactly, can incite somebody to action
The cable of electric dipole current source 2 and one or more is connected to the tail end of towing cable ship 1.Towing cable ship 1 is moved with pre-set velocity, can be with
Drag the electric dipole current source 2 and cable synchronizing moving.When it is implemented, can be that towing cable ship 1 moves according to pre-set velocity, move
While dynamic, electric dipole current source 2 launches controllable source time-frequency electromagnetic data, and the cable of same towed movement passes through the electricity on cable
Field sensor 3 (and 5), three-component magnetic field sensor 4 and three-component attitude transducer 6 etc., measure in real time and record corresponding edge
Cable and vertically the controllable source time-frequency electric field data, three-component controllable source time-frequency magnetic field data and three-component posture number with cable direction
According to.
In the present embodiment, the system provided by the application embodiment, which can gather, obtains ocean controllable source time-frequency
Electromagnetic data.Ocean controllable source time domain electromagnetic data can be collected, ocean controllable source domain electromagnetic number can also be gathered
According to ocean controllable source time domain electromagnetic data and ocean controllable source domain electromagnetic data can also be gathered simultaneously.It should be noted that
Existing method is typically only capable to individually collection and obtains time domain electromagnetic data or domain electromagnetic data, it is impossible to while gather time domain electromagnetic number
According to domain electromagnetic data.If in this way, generally required more after time domain electromagnetic data have been gathered, it is necessary to gather frequency domain data
Emission source corresponding to use, data acquisition equipment etc. are changed, to gather frequency domain data, cumbersome complexity, is wasted time and energy.And
The collection of time domain or domain electromagnetic data can be directly completed in present embodiment using same set of system.
In the present embodiment, the controllable source time-frequency electric field data can be specifically to include 1 durection component data
Controllable source time-frequency electric field data, that is, only include the controllable source time-frequency electric field data along cable direction.Can also include 2 directions
The controllable source time-frequency electric field data of component data, that is, include along the controllable source time-frequency electric field data in cable direction and vertical cables side
To controllable source time-frequency electric field data.When it is implemented, the component or 2 in 1 direction of collection according to specific needs, can be determined
The electric field component data in individual direction are as the controllable source time-frequency electric field data.
In the present embodiment, can will be same in order to collect the controllable source time-frequency electric field data along cable direction
Adjacent two electric-field sensor 3 on cable is as one group of controllable source time-frequency electric field data collection pair.Pass through this group of controllable source
Time-frequency electric field data is gathered to that can collect the controllable source time-frequency electric field data along cable direction.Wherein, on same cable
Adjacent two electric-field sensor 3 between spacing be 10 meters to 50 meters.So, it is ensured that adjacent two on same cable
There is sufficiently large pole span, so as to accurately measure the controllable source time-frequency electricity along cable direction between individual electric-field sensor
Field data.
In the present embodiment, can be by phase in order to collect the controllable source time-frequency electric field data in vertical cables direction
Relative two electric-field sensor 3 on adjacent line cable collects vertical as another group of controllable source time-frequency electric field data collection pair
The controllable source time-frequency electric field data in straight line cable direction.For example, Fig. 1 can be referred to.From figure top downwards, on first cable
First electric-field sensor 5 on first electric-field sensor 3 and Article 2 cable is relative two in the adjacent cables
Individual electric-field sensor, above-mentioned two electric-field sensor may be constructed one group of controllable source time-frequency electric field data collection pair, for gathering
Obtain the controllable source time-frequency electric field data in vertical cables direction.
In the present embodiment, in order to collect the controllable source time-frequency electric field number in more accurate vertical cables direction
According to when laying a plurality of cable, can be symmetrical by a plurality of cable and be arrangeding in parallel.For example, a plurality of cable is 9 cables
When, 1 cable can be laid on the symmetry axis, in the both sides that this is symmetrically taken out using the route that towing cable ship 1 travels as symmetry axis
Respectively symmetrically, 4 cables of laid equidistantly.And the spacing between adjacent cable is more than or equal to 25 meters.So, it is ensured that
There is sufficiently large pole span, so as to accurately measure sea between relative two electric-field sensor 3 and 5 in adjacent cables
Controllable source time-frequency electric field data in water.
In the present embodiment, used electric-field sensor all carries electrode.Wherein, two inductance sensors can lead to
Cross respective electrode and form one group of electrode pair, so as to gather the controllable source time-frequency electric field number between two inductance sensors
According to.When it is implemented, influenceed in order to avoid the polarity effect of electrode itself to controllable source time-frequency electric field data faint in seawater
Measurement, electrode used in the electroded electric-field sensor is unpolarizable electrode.When it is implemented, two can be passed through
Unpolarizable electrode can form a unpolarizable electrode pair, and then can measure to obtain two unpolarizable electrode (electrodes in seawater
It is right) between weak voltage signals, and then gather and obtain corresponding controllable source time-frequency electric field data.Specifically, described not pole
The electrode of change can be specifically copper sulfate electrode or nitric acid silver electrode, can also be platinum electrode of gold,platinized etc..When
So, electrode used in other unpolarizable electrodes conducts can also be selected as the case may be.It should also be noted that, generally
In individually collection frequency domain electric field data, often become smaller, the situation of frequency band relative narrower for frequency.At this moment using general
The electric field data of logical electrode pair collection influences little.And when gathering time domain electric field data, mutually often for frequency change compared with
Greatly, the relatively wide situation of frequency band, at this moment the electric field data of collection is had a great influence using ordinary electrode.In present embodiment
In, accurate controllable source time-frequency electric field data is obtained in order to gather simultaneously, so using band unpolarizable electrode
Electric-field sensor rather than electric-field sensor with ordinary electrode.
In the present embodiment, the controllable source time-frequency magnetic field data is three-component controllable source time-frequency magnetic field data, including 3
Individual durection component data, that is, include：Along the magnetic-field component data of X-direction, along the magnetic-field component data of Y direction and along Z axis
The magnetic-field component data in direction.Above three number of components is obtained when it is implemented, can be gathered by three-component magnetic field sensor 4
According to collecting three-component controllable source time-frequency magnetic field data.
In the present embodiment, the attitude data is three-component attitude data, including 3 durection component data, that is, is wrapped
Include：Measure inclination angle component data, azimuthal component data and tendency component data.Above-mentioned three-component attitude data can pass through seat
Mark conversion, the position data of corresponding rectangular coordinate system is converted into, can be used for characterizing collection three-component controllable source time-frequency magnetic field
The situation of three-component magnetic field sensor 4 during data.Obtained when it is implemented, can be gathered by three-component attitude transducer
Above-mentioned 3 component datas, that is, collect three-component attitude data.
In the present embodiment, in order to reduce shadow of the Acquisition Circuit of electric-field sensor 3 to three-component magnetic field sensor 4
Ring, when laying three-component magnetic field sensor 4, typically require three-component magnetic field sensor 4 and two adjacent electric-field sensors 3
Spacing will be more than or equal to 5 meters.So as to reduce interference of the electric-field sensor 3 to three-component magnetic field sensor 4.Specifically, may be used
So that three-component magnetic field sensor 4 to be laid in the interposition on the cable between two electric-field sensors adjacent on same cable
Put.
In the present embodiment, in order to ensure three-component attitude data and three that three-component attitude transducer 6 collects
The position correspondence of component magnetic field sensor 4.When laying three-component magnetic field sensor 4 and three-component attitude transducer 6, typically
Ask and be smaller than between magnetic field sensor 4 and attitude transducer 6 equal to 2 meters.Specifically, can be by three-component attitude transducer
6, which are close to three-component magnetic field sensor 4, is arranged on cable.It should be noted that when it is implemented, because three-component magnetic field passes
Sensor 4 is at any time all in change with posture of the motion of cable in water, and each three-component magnetic field sensor 4 uses
Same orthogonal coordinate system, so needing measurement in real time to record its corresponding three-component attitude data, so as to subsequently can be to every
Three-component controllable source time-frequency magnetic field data that individual three-component magnetic field sensor 4 collects carries out rotation processing, then can be so as to
Handled and analyzed in the ocean controllable source time-frequency electromagnetic data obtained to subsequent acquisition.
In the present embodiment, in order to ensure that controllable source time-frequency electromagnetic data is sufficiently strong caused by electric dipole current source 2, with
Frequency electromagnetic field when generation controllable source is excited in the following medium in marine site to be measured and seabed, the length of the electric dipole current source 2 can
To be set to 300 meters to 500 meters.Because the length long enough of electric dipole current source 2, the controllable source time-frequency electromagnetism launched in the seawater
Data can be just descended into the stratum below seabed.If the length of electric dipole current source 2 is too short, launch controllable source time-frequency electromagnetism number
It will be distributed in seawater according to most of and (flow to negative pole from positive pole in seawater), seldom controllable source time-frequency electromagnetic field signal
It can just descend into the stratum below seabed, and then influence the collection of data and the measurement to the following medium in marine site seabed to be measured.
In the present embodiment, in order to above-mentioned three-component attitude transducer 6, three-component magnetic field sensor 4 and electric field
Sensor 3 provides the power supply required for work, is additionally provided with one or more layers electric layer 7 outside the cable, to by cable with
The mechanical energy conversion of seawater movement produces electric energy, and operating voltage and operating current are provided for above-mentioned electronic device.
In the present embodiment, self-generating is carried out in order to avoid using high power power, passing through electric layer 7, it is specific real
Shi Shi, the electric layer 7 can be made up of friction nanometer generating flexible material.Above-mentioned friction nanometer generating flexible material can incite somebody to action
The mechanical energy that cable swings or pulled in the seawater when moving ahead with seawater is converted into electric energy, as the energy, there is provided to three-component
The electronic devices such as attitude transducer 6, electric-field sensor 3 and three-component magnetic field sensor 4.In addition, friction nanometer generating flexibility material
Material also has certain pliability, can fold, wind using the material as the cable of electric layer, be easy to reclaim and repeat to make
With.It should be noted that electric energy caused by electric layer 7 can specifically be supplied to all electronics including sensor on cable
Device uses.
In the present embodiment, in order to measure accurate three-component controllable source time-frequency magnetic field data, used three points
It can be specifically coil type three-component magnetic field sensor or fluxgate type three-component magnetic field sensing to measure magnetic field sensor 4
Device.Wherein, the basic structure of the coil type three-component magnetic field sensor can be around with certain on the magnetic core of high magnetic permeability
The coil of the number of turn.When coil being placed on controllable source in frequency electromagnetic field, magnetic field can change over time and electricity is induced in coil
Kinetic potential.The fluxgate type three-component magnetic field sensor this be in the saturation of alternating magnetic field using high conducting magnet core in tested magnetic field
Under excitation, non-linear relation between its magnetic induction intensity and magnetic field intensity measures a kind of sensor of low-intensity magnetic field.Certainly,
It can require to select other kinds of three-component magnetic field sensor controllable to gather three-component with performance according to specific
Source time-frequency magnetic field data.On the other hand, the application is not construed as limiting.
In the present embodiment, in order to by three-component attitude transducer 6, three-component magnetic field sensor 4 and electric-field sensor 3
It is each in the three-component attitude data, three-component controllable source time-frequency magnetic field data and the controllable source time-frequency electric field data that measure respectively
Component data is recorded and stored respectively, and the cable can also specifically include multiple amplifiers and multiple analog-digital converters.
When it is implemented, three-component attitude transducer 6 first can be connected with 3 amplifiers respectively, it is each again after above-mentioned 3 amplifiers
Connect an analog-digital converter.In this way, three-component attitude transducer 6 collect measurement inclination angle component data, azimuth point
Measure data and tendency component data can respectively by the enhanced processing of 1 amplifier after, then respectively by analog-digital converter by mould
Plan signal is converted into data signal and is transmitted storage.Equally, three-component magnetic field sensor 4 first can also amplify with 3 respectively
Device is connected, and respectively connects an analog-digital converter again after above-mentioned 3 amplifiers.In this way, three-component magnetic field sensor 4 gathers
The magnetic-field component data along X-direction that arrive, the magnetic-field component data along Y direction and along the three-component magnetic field of Z-direction point
Measure data can respectively by the enhanced processing of 1 amplifier after, then number is converted analog signals into by analog-digital converter respectively
Word signal is transmitted storage., can be by an amplifier when only gathering along the controllable source time-frequency electric field data in cable direction
The output ends of both ends two electric-field sensors 3 adjacent with same cable respectively be connected, then by the amplifier and one
Analog-digital converter connects.In this way, the collection of two electric-field sensors can lead to along the controllable source time-frequency electric field data in cable direction
After crossing the enhanced processing of amplifier, then data signal is converted into by analog-digital converter and is transmitted storage.It is vertical when also to gather
During the controllable source time-frequency electric field data that cable is put, similarly, can by the both ends of an amplifier respectively with adjacent cables
Two relative electric-field sensors 3 are connected with 5 output end, then the amplifier is connected with an analog-digital converter.On the other hand, this
Application repeats no more.
In the present embodiment, in order to ensure the precision of the data of record storage, the analog-digital converter is specifically as follows
32 analog-digital converters.The numerical data resolution ratio being converted to using 32 analog-digital converters is relatively preferable, and accuracy is relative
It is higher.It is, of course, also possible to selection uses other analog-digital converters, such as 8 analog-digital converters, 16 moulds as the case may be
Number converter, 24 analog-digital converters etc..
In the present embodiment, in order to protect the flexible material of above-mentioned electric layer 7 not to be worn, while in order to prevent from generating electricity
Layer 7 causes short-circuit electric leakage due to impaired, and protective layer 8 is additionally provided with outside the electric layer 7.Wherein, the protective layer 8 is typically with resistance to
The nonmetallic materials of mill are made.Specifically, above-mentioned protective layer 8 can be drawn (KEVLAR) material to be made by Kev.Certainly, specifically
During implementation, other wear-resisting nonmetallic materials can also be selected as the case may be as protective layer 8.On the other hand, the application does not make
Limit.
The operation principle of the ocean controllable source time-frequency electromagnetic data acquisition system provided according to the utility model embodiment can
To be：Electric dipole current source 2 produces excitaton source time-frequency electromagnetic signal in the seawater, in the following medium in marine site to be measured and seabed
Excite frequency electromagnetic field when producing controllable source；Adjacent two electric-field sensor 3 being arranged on same cable is controllable as one group
Source time-frequency electric field data collection is to gathering the controllable source time-frequency electric field data along cable direction；Three-component magnetic field on the cable
Sensor 4 gathers the three-component controllable source time-frequency magnetic field data, and the three-component attitude transducer 6 on the cable gathers three points
Measure attitude data；Relative two electric-field sensor 3 and 5 being arranged in adjacent cables is used as another group of controllable source time-frequency electric field
Controllable source time-frequency electric field data of the data acquisition to collection vertical cables direction.In whole work process, on the cable by
Cable can be converted into electric energy by electric layer 7 made of friction nanometer generating flexible material with the mechanical energy of seawater movement, for institute
Power supply needed for electric-field sensor 3, the three-component magnetic field sensor 4 and the three-component attitude transducer 6 offer work is provided.
Controllable source time-frequency electric field data, three-component controllable source time-frequency magnetic field data and the three-component in the above-mentioned marine site to be measured collected again
After magnetic field sensor three-component attitude data, Treatment Analysis can be carried out according to above-mentioned data, and then can be to marine site to be measured
The geologic structure in seabed and the electrical property feature of reservoir are analyzed and studied, and standard is done for follow-up Deep Sea Minerals exploration and development
It is standby.
In the embodiment of the present application, by setting electric layer in the outer surface of cable, cable is swung or dragged in the seawater
Mechanical energy when draging forward changes into electric energy, and the electronic device on cable is powered, avoided using large power supply pair
Electronic device causes electromagnetic interference, solves and is powered not present in existing ocean controllable source time-frequency electromagnetic data acquisition method
Just the technical problem of the ocean controllable source time-frequency electromagnetic data poor accuracy, collected, reached accurate, efficiently collection is extra large
The technique effect of foreign controllable source time-frequency electromagnetic data.
In one embodiment, in order to collect the controllable source time-frequency electric field data in vertical cables direction, described
In the case that system includes a plurality of cable, when it is implemented, a plurality of cable symmetrically and can be arranged in parallel, so not only may be used
In order to gather the controllable source time-frequency electric field data in vertical cables direction, it is also possible that the controllable source time-frequency electric field collected
Data are easy to follow-up Treatment Analysis.Wherein, relative two electric-field sensor 3 and 5 being arranged in adjacent cables is used to adopt
Collect the controllable source time-frequency electric field data in vertical cables direction.Can be by relative two electric-field sensor 3 in adjacent cables
With 5 as one group of controllable source time-frequency electric field data collection pair, to gather the controllable source time-frequency electric field data in vertical cables direction.
In one embodiment, in order that having foot between obtaining relative two electric-field sensor 3 and 5 in adjacent cables
Enough long pole spans, to gather more accurately and reliably controllable source time-frequency electric field data.When it is implemented, phase in a plurality of cable
Spacing between adjacent line cable could be arranged to be more than or equal to 25 meters.
In one embodiment, can will be same in order to collect the controllable source time-frequency electric field data along cable direction
Adjacent two electric-field sensor 3 on one cable is as one group of controllable source time-frequency electric field data collection pair.It is controllable by the group
Source time-frequency electric field data collection is to that can collect the controllable source time-frequency electric field data along cable direction.Wherein, same cable
On adjacent two electric-field sensor 3 between spacing be 10 meters to 50 meters.So, it is ensured that adjacent on same cable
There is sufficiently large pole span, so as to accurately measure the controllable source time-frequency along cable direction between two electric-field sensors
Electric field data.
In one embodiment, in order to ensure three-component attitude data that three-component attitude transducer 6 collects with
The position correspondence of three-component magnetic field sensor 4.When laying three-component magnetic field sensor 4 and three-component attitude transducer 6, typically
It is required that it is smaller than between three-component magnetic field sensor 4 and three-component attitude transducer 6 equal to 2 meters.Specifically, can be by three
Component attitude transducer 6 is close to three-component magnetic field sensor 4 and is arranged on cable.It should be noted that when it is implemented, by
With posture of the motion of cable in water it is and each three-component magnetic field at any time all in change in three-component magnetic field sensor 4
Sensor 4 uses same orthogonal coordinate system, so three-component attitude data corresponding to measurement record in real time is needed, so as to
The three-component controllable source time-frequency magnetic field data that can be subsequently collected to each three-component magnetic field sensor 4 is carried out at rotation
Reason, then can be handled and be analyzed in order to the ocean controllable source time-frequency electromagnetic data obtained to subsequent acquisition.
In one embodiment, when being influenceed in order to avoid the polarity effect of electrode itself to controllable source faint in seawater
The measurement of frequency electric field data, the electrode used in the electroded electric-field sensor is unpolarizable electrode.When it is implemented,
A unpolarizable electrode pair can be formed by two unpolarizable electrodes, and then can measure to obtain two electricity that do not polarize in seawater
Weak voltage signals between pole (electrode pair), collection obtain corresponding controllable source time-frequency electric field data.
In one embodiment, the described electrode not polarized can be specifically copper sulfate electrode or nitric acid
Silver electrode, it can also be platinum electrode of gold,platinized etc..It is of course also possible to other unpolarizable electrodes are selected as the case may be
As used electrode.
In one embodiment, in order to measure accurate three-component controllable source time-frequency magnetic field data, used three
Component magnetic field sensor 4 can be specifically that coil type three-component magnetic field sensor or fluxgate type three-component magnetic field pass
Sensor.Wherein, the basic structure of the coil type three-component magnetic field sensor can be around with one on the magnetic core of high magnetic permeability
Determine the coil of the number of turn.When coil being placed on controllable source in frequency electromagnetic field, magnetic field can change over time and be induced in coil
Electromotive force.The fluxgate type three-component magnetic field sensor this be in the full of alternating magnetic field using high conducting magnet core in tested magnetic field
Under excitation, non-linear relation between its magnetic induction intensity and magnetic field intensity measures a kind of sensor of low-intensity magnetic field.Certainly,
It can also require to select other kinds of three-component magnetic field sensor can to gather three-component with performance according to specific
Control source time-frequency magnetic field data.On the other hand, the application is not construed as limiting.
In one embodiment, in order to which the mechanical energy of cable is converted into electric energy, the electric layer 7 specifically can be by rubbing
Nanometer generating flexible material is wiped to be made.In this way, electric layer 7 can pull with seawater movement or in the seawater cable when moving ahead
Mechanical energy is converted into electric energy, is electric-field sensor 3 or 5, three-component magnetic field sensor 4 and three-component attitude transducer on cable
6 grade electronic devices provide suitable operating voltage and operating current.
In one embodiment, in order to ensure that controllable source time-frequency electromagnetic data is sufficiently strong caused by electric dipole current source, with
Frequency electromagnetic field when producing controllable source for being excited in the following medium in marine site to be measured and seabed, the length of the electric dipole current source can
To be set to 300 meters to 500 meters.Because the length long enough of electric dipole current source, the controllable source time-frequency electromagnetism number launched in the seawater
According to can just descend into the stratum below seabed.If the length of electric dipole current source is too short, launch controllable source time-frequency electromagnetic data
Major part will be distributed in seawater and (flow to negative pole from positive pole in seawater), seldom controllable source time-frequency electromagnetic data ability
Descend into the stratum below seabed, and then influence the collection of data and the measurement to the following medium in marine site seabed to be measured.
In one embodiment, in order to meet explore needs：Gather time domain ocean controllable source time-frequency electromagnetic data simultaneously
With frequency domain ocean controllable source time-frequency electromagnetic data.When the controllable source time-frequency electromagnetic data is specifically as follows the controllable source of time-domain
Frequency electromagnetic data, and/or, the controllable source time-frequency electromagnetic data of frequency domain.When it is implemented, electric dipole current source 2 can be according to tool
Body requirement the controllable source time-frequency electromagnetic data in generation time domain and the controllable source time-frequency electromagnetic data of frequency domain, and then can be with simultaneously
Collect the ocean controllable source time-frequency electromagnetic data of time-domain and the ocean controllable source time-frequency electromagnetic data of frequency domain.Certainly,
Electric dipole current source 2 can also be according to the controllable of the controllable source time-frequency electromagnetic data in specific requirement generation time domain or frequency domain
Source time-frequency electromagnetic data.The ocean controllable source time-frequency electromagnetic data or frequency domain to time-domain that be corresponding, can gathering
Ocean controllable source time-frequency electromagnetic data.
In one embodiment, in order to protect the flexible material of above-mentioned electric layer 7 not to be worn, while electric layer is prevented
7, due to impaired short circuit electric leakage, protective layer 8 are additionally provided with outside the electric layer 7.Wherein, the protective layer 8 is typically with wear-resisting non-
Metal material is made.Specifically, above-mentioned protective layer 8 can be drawn (KEVLAR) material to be made by Kev.Certainly, it is embodied
When, other wear-resisting nonmetallic materials can also be selected as the case may be as protective layer 8.On the other hand, the application is not construed as limiting.
In one embodiment, in order to store electric energy produced by above-mentioned electric layer 7, the system can deposit including electric energy
Storage device.Wherein, the electrical energy storage device can be electrically connected with electric layer 7, so as to which electric energy caused by electric layer 7 is led to
The connection is crossed to be transmitted and stored in electrical energy storage device.It is specific when laying electrical energy storage device, can by electric-field sensor 3,
Three-component magnetic field sensor 4 and the grade electronic device of three-component attitude transducer 6 are connected with neighbouring electrical energy storage device respectively, with
Obtain required electric energy nearby by the electrical energy storage device closed on, avoid adjusting from other electrical energy storage devices apart from each other
With the energy, reduce loss of the electric energy in transport process and the interference to electronic device on the way.It is, of course, also possible to according to specific
Situation selects the laying mode of other suitable electrical energy storage devices.On the other hand, the application is not construed as limiting.
In the present embodiment, the electrical energy storage device used can be specifically the electricity that can carry out multiple discharge and recharge
Can storage device.The electrical energy storage device that multiple discharge and recharge can be carried out is connected with the electric layer, specifically can be used for
Electric energy caused by the electric layer is repeatedly stored, and the electric energy sent in electric layer can not meet electromagnetism earthquake data acquisition cable
During normal work, can carry out the electrical energy storage device of multiple discharge and recharge can provide volume to electromagnetism earthquake data acquisition cable immediately
Outer electric energy, to ensure that electromagnetism earthquake data acquisition cable is normally carried out the collecting work of marine electromagnetic geological data.
In one embodiment, in order to store electric energy, the electrical energy storage device is specifically as follows rechargeable battery.Certainly
Other suitable devices can also be selected as electrical energy storage device.
In one embodiment, in order to by three-component attitude transducer 6, three-component magnetic field sensor 4 and electric field sensing
In three-component attitude data, three-component controllable source time-frequency magnetic field data and controllable source time-frequency electric field data that device 3 measures respectively
Each component data is recorded and stored respectively, and the cable can also specifically include multiple amplifiers and multiple analog-to-digital conversions
Device.When it is implemented, three-component attitude transducer 6 first can be connected with 3 amplifiers respectively, after above-mentioned 3 amplifiers
An analog-digital converter is respectively connected again.In this way, three-component attitude transducer 3 collect measurement inclination angle component data, orientation
Angle component data and tendency component data can respectively by the enhanced processing of 1 amplifier after, then respectively by analog-digital converter
Convert analog signals into data signal and be transmitted storage.Equally, three-component magnetic field sensor 4 can also first respectively with 3
Amplifier is connected, and respectively connects an analog-digital converter again after above-mentioned 3 amplifiers.In this way, three-component magnetic field sensor 4 is adopted
Collect the obtained magnetic-field component data along X-direction, the magnetic-field component data along Y direction and the magnetic-field component along Z-direction
Data can respectively by the enhanced processing of 1 amplifier after, then numeral is converted analog signals into by analog-digital converter respectively
Signal is transmitted storage., can be by amplifier when only gathering along the controllable source time-frequency electric field data in cable direction
The output end of both ends two electric-field sensors 3 adjacent with same cable respectively is connected, then by the amplifier and a mould
Number converter connects.In this way, the collection of two electric-field sensors can pass through along the controllable source time-frequency electric field data in cable direction
After the enhanced processing of amplifier, then data signal is converted into by analog-digital converter and is transmitted storage.When also gathering vertical line
During the controllable source time-frequency electric field data that cable is put, similarly, can by the both ends of an amplifier respectively with the phase in adjacent cables
To two electric-field sensors 3 be connected with 5 output end, then the amplifier is connected with an analog-digital converter.On the other hand, this Shen
It please repeat no more.
In one embodiment, in order to ensure the precision of the data of record storage, the analog-to-digital conversion implement body can be with
For 32 analog-digital converters.The numerical data resolution ratio being converted to using 32 analog-digital converters is relatively preferable, accuracy phase
To higher.It is, of course, also possible to as the case may be selection use other analog-digital converters, such as 8 analog-digital converters, 16
Analog-digital converter, 24 analog-digital converters etc..
In one embodiment, in order to collect the ocean controllable source time-frequency electromagnetic data in marine site to be measured, the system
System can also specifically include towing cable ship 1.Wherein, the towing cable ship 1 is connected with the electric dipole current source 2 and the cable.In this way,
Towing cable ship 1 can drag electric dipole current source 2 and the cable moves together.Electric dipole current source 2 with towing cable ship 1 while moving
Launch controllable source time-frequency electromagnetic data, controllable source time-frequency electromagnetism is produced for being excited in the following medium in marine site to be measured and seabed
.Cable while being moved with towing cable ship 1, gather in real time and record corresponding controllable source time-frequency electric field data, three-component can
Control source time-frequency magnetic field data and three-component attitude data.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.
In addition, in this manual, adjective can be only used for an element or dynamic such as first and second
Make to make a distinction with another element or action, without requiring or implying any actual this relation or order.Permit in environment
Perhaps in the case of, be should not be interpreted as limited to reference to element or part or step (s) in only element, part or step one
It is individual, and can be one or more of element, part or step etc..
As can be seen from the above description, the ocean controllable source time-frequency electromagnetic data that the application embodiment provides is adopted
The mechanical energy of cable is changed into electric energy, to the electronics device on cable by collecting system by setting electric layer in the outer surface of cable
Part is voluntarily powered, and electromagnetic interference of the large power supply to electronic device is avoided, when solving existing ocean controllable source
The ocean controllable source time-frequency electromagnetic data poor accuracy that power supply is troublesome present in frequency electromagnetic data acquisition method, collects
Technical problem, the accurate, technique effect of highly effective gathering ocean controllable source time-frequency electromagnetic data is reached；Received further through using friction
Electric layer is made in meter Fa electricity flexible materials, and cable is swung with seawater or the forward caused mechanical energy of towing is changed in the seawater
Into electric energy, and then electronic device can be powered, the initiating terminal avoided in cable uses tall and big rate power supply power supply logarithm
According to the influence of gatherer process；Also gathered by using adjacent two electric-field sensor of same cable along the controllable of cable direction
Source time-frequency electric field data, the controllable source time-frequency in vertical cables direction is gathered using two electric-field sensors relative in adjacent cables
Electric field data, three-component controllable source time-frequency magnetic field data is gathered using three-component magnetic field sensor, has reached collection multi -components
Ocean controllable source time-frequency electromagnetic data technique effect.
Can be refering to Fig. 3 ocean controllable source time-frequency electromagnetic data acquisition system provided using the application embodiment
Schematic diagram of a scenario, scene is embodied at one, providing ocean controllable source time-frequency electromagnetic data acquisition system using the application sets
Towing line type ocean controllable source electromagnetic prospecting system is counted, the ocean controllable source time-frequency electromagnetic data in certain marine site is acquired, specifically
It can carry out in such a way.It should be noted that the rectangular area of top represents the seawater region in marine site to be measured in Fig. 3,
The rectangular area of lower section represents the subsea strata in marine site to be measured, and the dash area in the rectangular area of lower section is represented in seabed not
The geologic structure known.
Concrete structure can refer to Fig. 1 and Fig. 2.Said system includes：Towing cable the ship 1, (dipole of pull-type electric dipole current source 2
300 meters to 500 meters of length) and 9 cables or more ocean controllable source time-frequency electromagnetic data collection cable (cable).Disposed on every cable
7 pairs or more of collection system, each pair collection system is by electric-field sensor (unpolarizable electrode to) 3, three-component magnetic field sensor 4 and three
Component attitude transducer forms.
The specific setting of electric-field sensor (unpolarizable electrode to) 3 is in the adjacent three-component magnetic field sensing of each two
An electric-field sensor 3 (unpolarizable electrode) is disposed on medium position between device 4.Two electric-field sensors 3 adjacent with cable
(unpolarizable electrode) can form an electrode pair, to measure the electric field component along cable directional spreding (along cable direction
Controllable source time-frequency electric field data) EX.Each three-component magnetic field sensor 4 is then used to measure three-component magnetic field signal.Described three points
Attitude transducer 6 is measured as measurement inclination angle, azimuth, the three-component attitude transducer being inclined to.
Independent 32 analog-digital converter with preamplifier, analog-to-digital conversion are connected between each electrode pair 3
Electric field (the E along cable directional spreding that device will measureX) analog signal is converted into data signal.
Each output end of three-component magnetic field sensor 4 connects 3 independent 32 analog-digital converters with preamplifier,
The three-component magnetic simulation signal measured is converted into data signal by analog-digital converter.
Electric-field sensor 3 and 5 between adjacent electromagnetic data collection towing cable forms another electrode pair and is connected to one
Independent 32 analog-digital converter with preamplifier, analog-digital converter is by the electric field of the vertical-rise cable directional spreding measured
EYAnalog signal is converted into data signal.
Wherein, described electric-field sensor 3 is electric-field sensor made of unpolarizable electrode.Described three-component magnetic field passes
Sensor 4 is specifically as follows three-component line of induction ring type magnetic field sensor or three-component fluxgate type magnetic field sensor.After conversion
Marine electromagnetic data signal the ocean controllable source time-frequency electromagnetic data note of boat-carrying is transmitted directly to by the fiber optic cables in towing cable
Record record storage in instrument.
The electric dipole current source 2 in water is dragged to provide controllable emission current.Its controllable emission current inverter is laid
Above deck.Along cable direction and the electricity of vertical cable directional spreding in the controllable source time-frequency electromagnetic data collection towing cable Measuring Oceanic of ocean
Field signal EX、EYWith three-component magnetic field signal.
Towing line type ocean controllable source electromagnetic prospecting system is even by the towing cable ship 1 shown in Fig. 2, pull-type electric dipole current source 2
300 meters to 500 meters of pole length, and the ocean controllable source time-frequency electromagnetic data collection system composition of three or more than three cables.
By connecting the electric-field sensor 3 and 5 at left and right sides of this cable on parallel electromechanical cable, then form perpendicular to electromagnetism
The electrode pair in cable direction, i.e., the electric-field sensor 3 and 5 that adjacent electromagnetic data is gathered between towing cable form another electrode pair,
To measure the electric field component E perpendicular to cable directional spredingY.Because the spacing between every two parallel electromechanical cables at least exists
More than 25 meters, with the parallel electromechanical cable in the left and right sides electric-field sensor form electrode pair pole span at least 50 meters with
On, the electrode pair of so big pole span can reliably measure the electric field component in seawater.In addition, the pole of this big pole span electrode pair
Pole span away from the also electrode pair with being disposed along cable direction is equal or suitable, it is ensured that it is measured along cable direction and perpendicular to
The electric field component E in cable directionXAnd EYMore accurately and reliably.
Outside one section of towing cable for encapsulating each electric-field sensor and three-component field Magnetic Sensor one or more layers is wrapped up on set
Rub electric layer 7 made of nanometer generating flexible material, then along with protective layer made of one layer of wear-resisting nonmetallic materials
8, you can the ocean controllable source electromagnetic data collection towing cable of former active is become into passive type ocean controllable source time-frequency electromagnetic data
Gather towing cable.Wherein, passive type ocean controllable source time-frequency electromagnetic data collection towing cable is received using the friction that parcel is put outside towing cable
Electromagnetic data collecting unit of the meter Fa electricity flexible materials 7 in the direct or indirect driving towing cable of electric energy caused by its motion and
Sensor carries out data collection task, substitutes the large power long in former towing cable completely apart from service cable.When towing cable in the seawater
Tow movement or when wave driving moves up and down, the Low-Frequency Mechanical of towing cable is moved conversion by friction nanometer generating flexible material 7
For electric energy, directly drive the electromagnetic data collecting unit in towing cable and sensor carries out data collection task.This electric energy can also
Charged by wired or wireless mode to the rechargeable battery in towing cable, rechargeable battery then drive electromagnetism in towing cable,
Attitude data collecting unit and sensor carry out ocean controllable source time-frequency electromagnetic data collecting work；Again due to that need not supply in addition
Electricity, cable can be done longer, and then more more dense electronic devices and sensor can be laid on cable, to gather
Ocean controllable source time-frequency electromagnetic data more, therefore also reached the technique effect for improving collecting efficiency.
By above-mentioned Sample Scenario, demonstrate and adopted by the application embodiment offer ocean controllable source time-frequency electromagnetic data
Collecting system can solve the ocean collected present in existing ocean controllable source time-frequency electromagnetic data acquisition method really
The technical problem of controllable source time-frequency electromagnetic data poor accuracy, reach accurate, highly effective gathering ocean controllable source time-frequency electromagnetic data
Technique effect.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application.
Claims (13)
- A kind of 1. ocean controllable source time-frequency electromagnetic data acquisition system, it is characterised in that including：Electric dipole current source and one or more cable；Wherein, the electric dipole current source, for producing excitaton source time-frequency electromagnetic signal, the excitaton source time-frequency electromagnetism in the seawater Signal is used to excite frequency electromagnetic field when producing controllable source in the following medium in marine site to be measured and seabed, wherein, during the controllable source Frequency electromagnetic field includes controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data；Multiple electric-field sensors with electrode are provided with every cable, wherein, adjacent two on same cable Electric-field sensor is used to gather the controllable source time-frequency electric field data along cable direction；Three-component magnetic field sensor is provided with the cable between adjacent two electric-field sensor on the same cable With three-component attitude transducer, wherein：The three-component magnetic field sensor, for gathering the three-component controllable source time-frequency magnetic field Data；The three-component attitude transducer, for gathering three-component attitude data；Electric layer is provided with every cable, wherein, the electric layer is used for for the electric field sensing on the cable Device, the three-component magnetic field sensor and the three-component attitude transducer provide the power supply needed for work.
- 2. system according to claim 1, it is characterised in that described in the case where the system includes a plurality of cable A plurality of cable is symmetrical and be arranged in parallel, wherein, relative two electric-field sensor being arranged in adjacent cables is vertical for gathering The controllable source time-frequency electric field data in straight line cable direction.
- 3. system according to claim 2, it is characterised in that the spacing in a plurality of cable between adjacent cables is more than Equal to 25 meters.
- 4. system according to claim 2, it is characterised in that adjacent two electric-field sensor on the same cable Between spacing be 10 meters to 50 meters；Spacing between the three-component magnetic field sensor and adjacent two electric-field sensors is big In equal to 5 meters；It is smaller than between the three-component attitude transducer and adjacent three-component magnetic field sensor equal to 2 meters.
- 5. system according to claim 2, it is characterised in that the electrode is unpolarizable electrode.
- 6. system according to claim 5, it is characterised in that the unpolarizable electrode includes at least one of：Sulfuric acid Copper electrode, nitric acid silver electrode, platinum electrode.
- 7. system according to claim 2, it is characterised in that the three-component magnetic field sensor is coil type three-component magnetic Field sensor, or, fluxgate type three-component magnetic field sensor.
- 8. system according to claim 2, it is characterised in that the electric layer is by friction nanometer generating flexible material system Into.
- 9. system according to claim 2, it is characterised in that the length of the electric dipole current source is 300 meters to 500 meters.
- 10. system according to claim 2, it is characterised in that the controllable source time-frequency electromagnetic data can for time-domain Control source time-frequency electromagnetic data, and/or, the controllable source time-frequency electromagnetic data of frequency domain.
- 11. system according to claim 2, it is characterised in that protective layer is additionally provided with outside the electric layer, wherein, it is described Protective layer draws material to be made by Kev.
- 12. system according to claim 2, it is characterised in that the system also includes electrical energy storage device, the electric energy Storage device is connected with the electric layer, for storing electric energy caused by the electric layer.
- 13. system according to claim 2, it is characterised in that the system also includes towing cable ship, the towing cable ship and institute Electric dipole current source is stated with the cable to be connected.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932827A (en) * | 2017-03-16 | 2017-07-07 | 中国石油天然气集团公司 | Ocean controllable source time-frequency electromagnetic data acquisition system and method |
| CN109342978A (en) * | 2018-11-06 | 2019-02-15 | 中国石油天然气集团有限公司 | Magnetotelluric anisotropy acquisition system, method and apparatus |
| CN113982561A (en) * | 2021-11-17 | 2022-01-28 | 中油奥博(成都)科技有限公司 | Natural gas hydrate exploitation monitoring system and method based on ground well time-frequency electromagnetism |
| CN114966490A (en) * | 2022-05-06 | 2022-08-30 | 中国人民解放军海军工程大学 | Magnetic field recorder |
-
2017
- 2017-03-16 CN CN201720255741.3U patent/CN206696448U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932827A (en) * | 2017-03-16 | 2017-07-07 | 中国石油天然气集团公司 | Ocean controllable source time-frequency electromagnetic data acquisition system and method |
| CN109342978A (en) * | 2018-11-06 | 2019-02-15 | 中国石油天然气集团有限公司 | Magnetotelluric anisotropy acquisition system, method and apparatus |
| CN109342978B (en) * | 2018-11-06 | 2021-03-30 | 中国石油天然气集团有限公司 | Magnetotelluric anisotropy acquisition system, magnetotelluric anisotropy acquisition method and magnetotelluric anisotropy acquisition equipment |
| CN113982561A (en) * | 2021-11-17 | 2022-01-28 | 中油奥博(成都)科技有限公司 | Natural gas hydrate exploitation monitoring system and method based on ground well time-frequency electromagnetism |
| CN114966490A (en) * | 2022-05-06 | 2022-08-30 | 中国人民解放军海军工程大学 | Magnetic field recorder |
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