CN206557401U - A kind of offshore earthquake electromagnetic data harvester - Google Patents
A kind of offshore earthquake electromagnetic data harvester Download PDFInfo
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- CN206557401U CN206557401U CN201720144358.0U CN201720144358U CN206557401U CN 206557401 U CN206557401 U CN 206557401U CN 201720144358 U CN201720144358 U CN 201720144358U CN 206557401 U CN206557401 U CN 206557401U
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Abstract
The application provides a kind of offshore earthquake electromagnetic data harvester.The device includes：Acquisition vessel, focus, current source；Pull the collection optical cable in acquisition vessel stern；Gather optical cable equal intervals and four component optical fiber detectors of measurement four component earthquake signal and the three-component optical fiber emf sensor of measurement three-component electromagnetic field signal are set；Four component optical fiber detectors and three-component optical fiber emf sensor is adjoining a three-component fibre optic gyroscope, three-component fibre optic gyroscope measures four component optical fiber detectors of abutting connection or the three-component attitude data of three-component optical fiber emf sensor；Collection optical cable is provided with laser signal generator close to one end of acquisition vessel and receives the Laser Modulation demodulation instrument for the signal data that four component optical fiber detectors, three-component optical fiber emf sensor and the three-component fibre optic gyroscope measurement being distributed along cable are obtained.The technical scheme provided using the embodiment of the present application can improve offshore earthquake electromagnetic data accuracy and reliability.
Description
Technical field
The utility model is related to technical field of sea exploration, more particularly to a kind of offshore earthquake electromagnetic data harvester.
Background technology
Abundant resource is contained in ocean, and 70% earth surface is covered by ocean, oil, natural gas and rare metal
There are extremely abundant reserves etc. various mineral resources in seabed, these resources need to be found out and developed.In the ocean earth
In physical prospecting technical field, Electromagnetism of Earthquake data (geological data and electromagnetic data) are explored to marine minerals, petroleum resources etc.
Have great importance with overall merit.
Existing acquisition of marine seismic data mode can mainly include three kinds：The first is simple component, two components, three
Component or four component pull-type acquisition of marine seismic data cables drag collection quarter, acquisition vessel tow collection cable the water surface with
At the uniform velocity moved ahead in certain depth down, the focus (such as air gun source) of acquisition vessel towing or the focus of other energy source boat towing
(such as air gun source) synchronizing moving and timing localized excitation and is adopted in the depth certain below the water surface with collection cable respectively together
Collection；Second is that simple component, two components, three-component or four component ocean bottom seismic datas collection cable sink to seabed, and collection cable is by putting
Cable ship, which is first delivered, is routed to seabed, then tows controllable air gun source under water away from certain below sea by air gun source ship
Moved ahead in depth and seismic signal is excited into seawater, the earthquake data acquisition cable collection sea for being routed to seabed is then delivered in advance
Bottom geological data；The third is that independent three-component or four component ocean bottom seismic data acquisition stations are sunk to the bottom, the towing of air gun source ship
Excite, then sink to the bottom when being dragged under dampening in the water of controllable offshore earthquake air gun excitaton source depth certain below away from sea
Earthquake data acquisition station collection three-component or four component ocean bottom seismic datas.
Existing marine electromagnetic data acquisition mode can mainly include three kinds：The first is that pull-type marine electromagnetic is dragged
Cable, marine electromagnetic (electric current) excitaton source synchronously drags with collection cable in water and is excited and gathered.Second is marine electromagnetic
Data acquisition cable is sunk to the bottom, and marine electromagnetic (electric current) excitaton source is dragged in water and excited, and the electromagnetic data collection cable then sunk to the bottom is adopted
Collect electromagnetic data.The third is that independent marine electromagnetic data acquisition station is sunk to the bottom, and independent marine electromagnetic (electric current) excitaton source exists
Drag and excite in water, the electromagnetic data acquisition station collection marine electromagnetic data then sunk to the bottom.
, it is necessary to the electric load as information in above-mentioned marine seismic data of the prior art and electromagnetic data acquisition mode
Body, information is transmitted using wire, therefore, is vulnerable to the interference of external electromagnetic field, and the wire of simultaneous transmission information can also interfere with
Electromagnetic sensor, reduces the Electromagnetism of Earthquake data accuracy collected and reliability.
Utility model content
The purpose of the application is to provide a kind of offshore earthquake electromagnetic data harvester, can gather ocean four component earthquake
Data and the component electromagnetic field data of ocean six, and Electromagnetism of Earthquake data accuracy and reliability are effectively improved, to realize to ocean
The explorations such as mineral products, petroleum resources and overall merit provide data and supported.
What the offshore earthquake electromagnetic data harvester that the application is provided was realized in：
A kind of offshore earthquake electromagnetic data harvester, including：Acquisition vessel, pull-type focus and pull-type current source；
Pull the collection optical cable in the collection offshore earthquake electromagnetic data of the acquisition vessel stern；
The collection optical cable equal intervals are disposed with four light components of the measurement four component earthquake signal of predetermined number
The three-component optical fiber emf sensor of the measurement three-component electromagnetic field signal of fine wave detector and predetermined number；Four light components
By the collection, optical cable is adjoining three-component optical fiber respectively for fine wave detector and the three-component optical fiber emf sensor
Gyroscope, the three-component fibre optic gyroscope measurement and four adjoining component optical fiber detections of the three-component fibre optic gyroscope
The three-component attitude data of device or three-component optical fiber emf sensor；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, described three points
Measuring optical fiber emf sensor includes adjoining three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection
The four components optical fiber detector, the three-component fibre optic magnetic field sensor, the three-component optic fibre electric field of optical cable distribution are passed
Signal and the Laser Modulation demodulation instrument of data that sensor and the three-component fibre optic gyroscope measurement are obtained.
In a preferred embodiment, the four components optical fiber detector includes a fibre optic hydrophone and one three points
Measure optical fiber detector.
In a preferred embodiment, the three-component electric field sensor of optic fibre is the light using electroluminescent light absorption effect
Fine electric-field sensor or the electric field sensor of optic fibre using piezoelectricity elasto-optical effect.
In a preferred embodiment, the three-component fibre optic magnetic field sensor is the optical fiber magnetic using Faraday effect
Field sensor or the fibre optic magnetic field sensor using magnetostrictive effect.
In a preferred embodiment, the three-component attitude data includes inclination angle, azimuth and tendency.
In a preferred embodiment, the scope set at equal intervals is 1.5 meters to 15 meters.
In a preferred embodiment, the fibre optic hydrophone is interference type optical fiber hydrophone.
In a preferred embodiment, the three-component optical fiber detector is three-component optical fiber acceleration transducer or three
Component optical fiber vector hydrophone.
A kind of offshore earthquake electromagnetic data harvester, including acquisition vessel, pull-type focus；
Pull the collection optical cable in the collection marine seismic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with the four component optical fiber inspection of the measurement four component earthquake signal of predetermined number
Ripple device, optical cable is adjoining three-component fibre optic gyroscope, described three points by the collection for the four components optical fiber detector
Measure fibre optic gyroscope measurement and the three-component posture of four adjoining component optical fiber detectors of the three-component fibre optic gyroscope
Data；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection
The four components optical fiber detector and the obtained signal of the three-component fibre optic gyroscope measurement of optical cable distribution and data it is sharp
Light modulation demodulates instrument.
A kind of offshore earthquake electromagnetic data harvester, including acquisition vessel, pull-type current source；
Pull the collection optical cable in the collection marine electromagnetic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with the three-component optical fiber of the measurement three-component electromagnetic field signal of predetermined number
Emf sensor；Optical cable is adjoining three-component optical fiber top by the collection for the three-component optical fiber emf sensor
Spiral shell instrument, the three-component fibre optic gyroscope measurement and the adjoining three-component optical fiber electromagnetic field of the three-component fibre optic gyroscope
The three-component attitude data of sensor；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, described three points
Measuring optical fiber emf sensor includes adjoining three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection
The three-component fibre optic magnetic field sensor, the three-component electric field sensor of optic fibre and the three-component optical fiber top of optical cable distribution
Signal and the Laser Modulation demodulation instrument of data that spiral shell instrument measurement is obtained.
The application either synchronously or asynchronously gathers ocean using four component optical fiber detectors and three-component optical fiber emf sensor
Without any electronic device in earthquake and electromagnetic field signal, collection optical cable, offshore earthquake electromagnetic data can be significantly reduced
The manufacturing cost of harvester, and it is easy to the operation and maintenance at sea producing, it considerably simplify sea
The design and manufacture of foreign Electromagnetism of Earthquake data acquisition device.Simultaneously as making information carrier using optical fiber, it is possible to achieve remote
Measurement and monitor on a large scale, there can be adopting for more dense and more earthquakes of quantity and electromagnetic field signal on every collection optical cable
Acquisition means, can be with the collection high density ocean four component earthquake data of higher efficiency and the component electromagnetic field data of ocean six.With showing
There is technology to compare, the harvester provided using the embodiment of the present application can effectively improve offshore earthquake electromagnetic data accuracy and
Reliability, and then the accuracy and reliability for the underground geologic bodies target that offshore earthquake electromagnetic data is detected can be improved, it is
Realize that providing data to the explorations such as marine minerals, petroleum resources and overall merit supports.
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 accompanying drawing used required 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, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of a kind of structural representation of the embodiment for offshore earthquake electromagnetic data harvester that the application is provided
Figure；
Fig. 2 is a kind of flow chart of the embodiment for the offshore earthquake electromagnetic data acquisition method that the application is provided；
Fig. 3 is a kind of embodiment for the offshore earthquake electromagnetic data harvester at sea drag operation that the application is provided
Schematic diagram；
Fig. 4 is the flow chart of another embodiment for the offshore earthquake electromagnetic data acquisition method that the application is provided；
Fig. 5 is the flow chart of another embodiment for the offshore earthquake electromagnetic data acquisition method that the application is provided.
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.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Below implementing for the embodiment of the present application is described in detail with several specific examples.
A kind of a kind of embodiment of offshore earthquake electromagnetic data harvester of the application introduced below.With reference to accompanying drawing 1, Fig. 1
It is a kind of a kind of structural representation of the embodiment for offshore earthquake electromagnetic data harvester that the application is provided, described device can
With including：
Acquisition vessel 1, pull-type focus 2 and pull-type current source 3；
Pull the collection optical cable 4 in the collection offshore earthquake electromagnetic data of the acquisition vessel stern；
Visible referring to Fig. 1, the collection equal intervals of optical cable 4 are disposed with the measurement four component earthquake letter of predetermined number
Number four component optical fiber detectors 5 and predetermined number measurement three-component electromagnetic field signal three-component optical fiber emf sensor
6；The four components optical fiber detector 5 and the three-component optical fiber emf sensor 6 are adjoined by the collection optical cable respectively
Three-component fibre optic gyroscope 7 is connected with, the measurement of three-component fibre optic gyroscope 7 is adjoined with the three-component fibre optic gyroscope 7
Four component optical fiber detectors 5 of connection or the three-component attitude data of three-component optical fiber emf sensor 6；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, described three points
Measuring optical fiber emf sensor 6 includes adjoining three-component electric field sensor of optic fibre 61 and three-component fibre optic magnetic field sensor
62；
The collection optical cable 4 is provided with laser signal generator 8 and received and adopted along described close to one end of the acquisition vessel 1
Collect the four components optical fiber detector 5, the three-component fibre optic magnetic field sensor 61, the three-component optical fiber electricity of optical cable distribution
Signal and the Laser Modulation demodulation instrument 9 of data that field sensor 62 and the three-component fibre optic gyroscope 7 measurement are obtained.
Specifically, the default laser pulse signal of laser signal generator transmitting, is believed based on the default laser pulse
Number and collection optical cable 4, Laser Modulation demodulation instrument 9 can receive along it is described collection optical cable distribution the four components optical fiber inspection
Ripple device 5, the three-component fibre optic magnetic field sensor 61, the three-component electric field sensor of optic fibre 62 and the three-component optical fiber top
Spiral shell instrument 7 measures obtained signal.Here it is used as the carrier of information using light rather than electricity, what is utilized is optical fiber rather than wire
To transmit information, so, the interference of external electromagnetic field is not easily susceptible to, with higher measurement accuracy and reliability, Ke Yiyou
Effect ensures the accuracy of Electromagnetism of Earthquake data.
Specifically, the default laser pulse signal can be set previously according to actual acquisition situation.
Preset specifically, the distance between herein described adjoining two devices that can include being connected with each other are less than
Threshold value.The specific predetermined threshold value can combine practical application and set, for example, be set to 0.05m, but herein described default
Threshold value is not limited thereto.
Specifically, herein described pull-type focus can be pull-type controlled source, such as pull-type air gun source, but
Pull-type focus described in the embodiment of the present application is not limited with above-mentioned.
Specifically, herein described pull-type current source can be pull-type controllable current source, such as pull-type dipole electricity
Stream source, but pull-type controllable current source described in the embodiment of the present application is not limited with above-mentioned.
Specifically, the four components optical fiber detector can include a fibre optic hydrophone and a three-component optical fiber detection
Device.
Specifically, the three-component electric field sensor of optic fibre can be to be sensed using the optic fibre electric field of electroluminescent light absorption effect
Device or the electric field sensor of optic fibre using piezoelectricity elasto-optical effect.
Specifically, the three-component fibre optic magnetic field sensor can be using Faraday effect fibre optic magnetic field sensor or
Using the fibre optic magnetic field sensor of magnetostrictive effect.
Specifically, the application is detected by highly sensitive optical coherence, pull-type focus or pull-type current source are sent out
Underwater sound vibration caused by the seismic signal or current source signal gone out or electromagnetic field change are converted into optical signal, are reached by optical fiber sharp
Light modulation demodulates instrument.Because light sensitivity is high, good frequency response, dynamic range is big, electromagnetism interference and signal cross-talk energy
Power is strong, realizes that sensing is integrated with transmission, can greatly improve the reliability of offshore earthquake electromagnetic data harvester.Together
When, due to making information carrier using optical fiber, it is possible to achieve the measurement and monitoring of long-distance large-range.
Specifically, the three-component attitude data includes inclination angle, azimuth and tendency.Subsequently can using the inclination angle,
Four component earthquake signal, three-component electric field signal and the three-component magnetic field signal that azimuth and tendency are obtained to measurement carry out corresponding
Rotational positioning, to ensure the accuracy of Electromagnetism of Earthquake data.
Specifically, the scope set at equal intervals is 1.5 meters to 15 meters.Furthermore, it is necessary to which explanation, the application is implemented
The scope set at equal intervals described in example is not limited in above-mentioned 1.5 meters to 15 meters, in actual applications, can be combined with reality
The situation of survey acquisition sets corresponding scope.
Specifically, the fibre optic hydrophone can be interference type optical fiber hydrophone.Specifically, the interference-type optical fiber water is listened
Device is (such as Michelson interferometers, Mach-Zehnder interferometers, the Fabry- of the principle construction based on optical interdferometer
Perot interferometers, Sagnac interferometers).By taking Michelson interferometers as an example, its operation principle is by swashing that laser is sent
Light is divided into two-way through fiber coupler：The pickup arm of fibre optic interferometer is constituted all the way, receives sound wave modulation, another road is then constituted
There is provided fixed phase for reference arm.Two beam ripples return to fiber coupler after being reflected through back end reflective film, interfere, the light of interference
Signal is converted to electric signal through photodetector, and the information of sound wave can be just picked up by signal transacting.
Sweared specifically, the three-component optical fiber detector can be three-component optical fiber acceleration transducer or three-component optical fiber
Measure hydrophone.Specifically, the three-component optical fiber acceleration transducer supports 1 mass jointly by 6 elastic paravariable column bodies
Three-component structure is constituted, the fine interferometer of three groups of Michelson- full polarizations shares a light source composition.Elastic paravariable column body is usual
Refer to the critical component in wave detector sensing element, the wave detector digital information processing system is believed with the good digital of TI companies
Number process chip is core, is aided with necessary circuit, realizes the high precision test to acceleration signal and the benefit of error signal
Repay.The three-component optical fiber vector hydrophone typically refers to double coupler annular chamber fibre optical sensors based on multiple-beam interference,
Use the PGC modulation /demodulation of high frequency light frequency modulation.Its profile is cylindrical thin shell type optical fiber acceleration transducer, using laying particular stress on hearty cord
The support frame of structure realizes the gesture stability to optical fiber vector hydrophone towed array.
From the above, the offshore earthquake electromagnetic data harvester provided by the embodiment of the present application uses four points
Amount optical fiber detector and three-component optical fiber emf sensor either synchronously or asynchronously gather offshore earthquake and electromagnetic field signal, gather light
Without any electronic device in cable, the manufacturing cost of offshore earthquake electromagnetic data harvester can be significantly reduced,
And it is easy to the operation and maintenance at sea producing, it considerably simplify offshore earthquake electromagnetic data harvester
Design and manufacture.Simultaneously as making information carrier using optical fiber, it is possible to achieve the measurement and monitoring of long-distance large-range, every
There can be the harvester of the more dense and more earthquakes of quantity and electromagnetic field signal on collection optical cable, can adopting with higher efficiency
Collect high density ocean four component earthquake data and six component electromagnetic field datas.Compared with prior art, the embodiment of the present application is utilized
The harvester of offer can effectively improve offshore earthquake electromagnetic data accuracy and reliability, and then can improve offshore earthquake
The accuracy and reliability for the underground geologic bodies target that electromagnetic data is detected, are surveyed to realize to marine minerals, petroleum resources etc.
Visit and provide data support with overall merit.
The application introduced below gathers offshore earthquake electromagnetic data by above-mentioned offshore earthquake electromagnetic data harvester
When a kind of a kind of corresponding embodiment of offshore earthquake electromagnetic data acquisition method.Fig. 2 is the offshore earthquake electricity that the application is provided
A kind of flow chart of embodiment of magnetic data acquisition method, this application provides the operation of the method as described in embodiment or flow chart
Step, but can include more or less operating procedures based on routine or without performing creative labour.Enumerated in embodiment
The step of order be only numerous step execution sequences in a kind of mode, unique execution sequence is not represented.In practice
When system or client production execution, it can be performed according to embodiment or method shown in the drawings order or parallel execution
(environment of such as parallel processor or multiple threads).Specifically as shown in Fig. 2 methods described can include：
S210：By gather offshore earthquake electromagnetic data collection optical cable according to default survey grid by acquisition vessel below the water surface
Predetermined depth towing moves ahead.
Specifically, the predetermined depth can be pre-set with reference to the situation during actual acquisition.
S220：Ship is excited to be excited in the focus of predetermined depth towing predetermined number and current source movement described in b.s.l.
Seismic signal and current source signal.
Specifically, described excite ship to be same ship or different ships from the acquisition vessel.Specifically,
Here focus, current source and collection optical cable synchronously pull movement in the seawater.
S230：Four component optical fiber detectors measure four component earthquake signal.
S240：Three-component optical fiber emf sensor measures three-component electromagnetic field signal, wherein, the three-component electromagnetic field
Signal includes three-component electric field signal and three-component magnetic field signal, and the three-component optical fiber emf sensor includes adjoining
Three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor.
S250：Three-component fibre optic gyroscope is measured to be examined with four adjoining component optical fiber of the three-component fibre optic gyroscope
The three-component attitude data of ripple device or three-component optical fiber emf sensor.
S260：The default laser pulse signal of laser signal generator transmitting, Laser Modulation demodulation instrument passes through the collection
Optical cable receives the four components optical fiber detector, the three-component fibre optic magnetic field sensor, institute along the collection optical cable distribution
State signal and data that three-component electric field sensor of optic fibre and the three-component fibre optic gyroscope measurement are obtained.
Specifically, after the default laser pulse signal of laser signal generator transmitting here, passing through the default laser arteries and veins
Rush exciting for signal, the collection optical cable can by the four components optical fiber detector, the three-component fibre optic magnetic field sensor,
Signal that the three-component electric field sensor of optic fibre and the three-component fibre optic gyroscope measurement are obtained and data transfer are to laser
Modulation /demodulation instrument.
S270：Obtained signal is received to Laser Modulation demodulation instrument and data carry out conversion localization process and obtain sea
Foreign four component earthquake data and the component electromagnetic field data of ocean six.
Specifically, the six component electromagnetics field data includes three-component electric field data and three-component magnetic field data.Specifically,
Corresponding four components optical fiber detector, the three-component fibre optic magnetic field that can be obtained by three-component fibre optic gyroscope measurement are sensed
Device, the three-component attitude data of three-component electric field sensor of optic fibre are respectively to four component optical fiber detectors, three-component fibre optic magnetic field
Four component earthquake signal, three-component magnetic field signal and three-component electricity that sensor, three-component electric field sensor of optic fibre measurement are obtained
Field signal is carried out after corresponding rotational positioning, is reconverted into corresponding ocean four component earthquake data and the component electromagnetic of ocean six
Field data.
In actual applications, as shown in figure 3, the offshore earthquake electromagnetic data harvester that Fig. 3, which is the application, to be provided is in sea
A kind of schematic diagram of embodiment of upper drag operation.
From a kind of embodiment of offshore earthquake electromagnetic data acquisition method of above the application, the application uses four components
Without any in optical fiber detector and the collection offshore earthquake of three-component optical fiber emf sensor and electromagnetic field signal, collection optical cable
Electronic device, can significantly reduce the manufacturing cost of offshore earthquake electromagnetic data harvester, and be easy in sea
Operation and maintenance in upper production, considerably simplify the design and manufacture of offshore earthquake electromagnetic data harvester.
, can on every collection optical cable simultaneously as making information carrier using optical fiber, it is possible to achieve the measurement and monitoring of long-distance large-range
, can be with the collection high density ocean of higher efficiency to there is the harvester of the more dense and more earthquakes of quantity and electromagnetic field signal
Four component earthquake data, the component electromagnetic field data of ocean six.Compared with prior art, the technology provided using the embodiment of the present application
Scheme can effectively improve offshore earthquake electromagnetic data accuracy and reliability, and then can improve extra large sample Electromagnetism of Earthquake data spy
The accuracy and reliability of the underground geologic bodies target measured, are commented the exploration such as marine minerals, petroleum resources and synthesis to realize
Valency provides data and supported.
The application introduced below gathers offshore earthquake electromagnetic data by above-mentioned offshore earthquake electromagnetic data harvester
When a kind of corresponding another embodiment of offshore earthquake electromagnetic data acquisition method.Fig. 4 is the offshore earthquake that the application is provided
The flow chart of another embodiment of electromagnetic data acquisition method, this application provides the method as described in embodiment or flow chart
Operating procedure, but can include more or less operating procedures based on routine or without performing creative labour.In embodiment
The step of enumerating order is only a kind of mode in numerous step execution sequences, and unique execution sequence is not represented.In reality
In system or client production execution when, can according to embodiment or method shown in the drawings order perform or hold parallel
Row (environment of such as parallel processor or multiple threads).Specifically as shown in figure 4, methods described can include：
S410：By gather marine seismic data collection optical cable according to default survey grid by acquisition vessel below the water surface preset
Depth towing moves ahead.
S420：Ship is excited to excite earthquake to believe in the focus movement of predetermined depth towing predetermined number described in b.s.l.
Number.
S430：Four component optical fiber detectors measure four component earthquake signal.
S440：Three-component fibre optic gyroscope is measured to be examined with four adjoining component optical fiber of the three-component fibre optic gyroscope
The three-component attitude data of ripple device.
S450：The default laser pulse signal of laser signal generator transmitting, Laser Modulation demodulation instrument passes through the collection
Optical cable is received to be measured along the four components optical fiber detector and the three-component fibre optic gyroscope of the collection optical cable distribution
The signal and data arrived.
S460：Obtained signal is received to Laser Modulation demodulation instrument and data carry out conversion localization process and obtain sea
Foreign four component earthquake data.
Specifically, focus and collection optical cable here synchronously pulls movement in the seawater.
From a kind of embodiment of offshore earthquake electromagnetic data acquisition method of above the application, the application uses four components
Optical fiber detector is gathered in marine seismic signals, collection optical cable without any electronic device, can with significantly reducing ocean
The manufacturing cost of seismoelectric magnetic data harvester, and it is easy to the operation and maintenance at sea producing, largely
On simplify the design and manufacture of offshore earthquake electromagnetic data harvester., can be with simultaneously as make information carrier using optical fiber
Realize on the measurement and monitoring of long-distance large-range, every collection optical cable there can be the more dense and more seismic signals of quantity
Harvester, can be with the collection high density ocean four component earthquake data of higher efficiency.Compared with prior art, the application is utilized
The technical scheme that embodiment is provided can effectively improve marine seismic data accuracy and reliability, and then ocean can be improved
The accuracy and reliability for the underground geologic bodies target that shake data snooping is arrived, are explored to realize to marine minerals, petroleum resources etc.
Data are provided with overall merit to support.
The application introduced below gathers offshore earthquake electromagnetic data by above-mentioned offshore earthquake electromagnetic data harvester
When a kind of corresponding another embodiment of offshore earthquake electromagnetic data acquisition method.Fig. 5 is the offshore earthquake that the application is provided
The flow chart of another embodiment of electromagnetic data acquisition method, this application provides the method as described in embodiment or flow chart
Operating procedure, but can include more or less operating procedures based on routine or without performing creative labour.In embodiment
The step of enumerating order is only a kind of mode in numerous step execution sequences, and unique execution sequence is not represented.In reality
In system or client production execution when, can according to embodiment or method shown in the drawings order perform or hold parallel
Row (environment of such as parallel processor or multiple threads).Specifically as shown in figure 5, methods described can include：
S510：By gather marine electromagnetic data collection optical cable according to default survey grid by acquisition vessel below the water surface preset
Depth towing moves ahead.
S520：Ship is excited in predetermined depth towing current source movement excitation current source signal described in b.s.l..
S530：Three-component optical fiber emf sensor measures three-component electromagnetic field signal, wherein, the three-component electromagnetic field
Signal includes three-component electric field signal and three-component magnetic field signal, and the three-component optical fiber emf sensor includes adjoining
Three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor.
S540：Three-component fibre optic gyroscope measures the three-component optical fiber electricity adjoining with the three-component fibre optic gyroscope
The three-component attitude data of magnetic field sensor.
S550：The default laser pulse signal of laser signal generator transmitting, Laser Modulation demodulation instrument passes through the collection
Optical cable receives the three-component fibre optic magnetic field sensor, the three-component electric field sensor of optic fibre along the collection optical cable distribution
The signal and data obtained with the three-component fibre optic gyroscope measurement.
S560：Obtained signal is received to Laser Modulation demodulation instrument and data carry out conversion localization process and obtain sea
Foreign six component electromagnetic field datas.
Specifically, current source and collection optical cable synchronously pull movement in the seawater here.
From a kind of embodiment of offshore earthquake electromagnetic data acquisition method of above the application, the application uses three-component
Optical fiber emf sensor is gathered in marine electromagnetic field signal, collection optical cable without any electronic device, can significantly be dropped
The manufacturing cost of low marine electromagnetic data harvester, and it is easy to the operation and maintenance at sea producing, very big
The design and manufacture of offshore earthquake electromagnetic data harvester are simplified in degree.Simultaneously as information carrier is made using optical fiber,
It can realize on the measurement and monitoring of long-distance large-range, every collection optical cable can there is the more dense and more electromagnetic fields of quantity
The harvester of signal, can be with the component electromagnetic field data of collection high density ocean six of higher efficiency.Compared with prior art, it is sharp
The harvester provided with the embodiment of the present application can effectively improve marine electromagnetic data accuracy and reliability, and then can carry
The accuracy and reliability for the underground geologic bodies target that high marine electromagnetic data is detected, to realize to marine minerals, oil gas money
The explorations such as source provide data with overall merit and supported.
A kind of another embodiment of offshore earthquake electromagnetic data harvester of the application introduced below.Including：
Acquisition vessel, pull-type focus；
Pull the collection optical cable in the collection marine seismic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with the four component optical fiber inspection of the measurement four component earthquake signal of predetermined number
Ripple device, optical cable is adjoining three-component fibre optic gyroscope, described three points by the collection for the four components optical fiber detector
Measure fibre optic gyroscope measurement and the three-component posture of four adjoining component optical fiber detectors of the three-component fibre optic gyroscope
Data；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection
The four components optical fiber detector and the obtained signal of the three-component fibre optic gyroscope measurement of optical cable distribution and data it is sharp
Light modulation demodulates instrument.
From the above, the offshore earthquake electromagnetic data harvester provided by the embodiment of the present application uses four points
Measure in optical fiber detector collection marine seismic signals, collection optical cable without any electronic device, can significantly reduce ocean
The manufacturing cost of Electromagnetism of Earthquake data acquisition device, and it is easy to the operation and maintenance at sea producing, in very great Cheng
The design and manufacture of offshore earthquake electromagnetic data harvester are simplified on degree.Simultaneously as information carrier is made using optical fiber, can
To realize on the measurement and monitoring of long-distance large-range, every collection optical cable can there is the more dense and more seismic signals of quantity
Harvester, can be with the collection high density ocean four component earthquake data of higher efficiency.Compared with prior art, this Shen is utilized
Please the harvester that provides of embodiment can effectively improve marine seismic data accuracy and reliability, and then ocean can be improved
The accuracy and reliability for the underground geologic bodies target that geological data is detected, are surveyed to realize to marine minerals, petroleum resources etc.
Visit and provide data support with overall merit.
A kind of another embodiment of offshore earthquake electromagnetic data harvester of the application introduced below.Including：
Acquisition vessel, pull-type current source；
Pull the collection optical cable in the collection marine electromagnetic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with the three-component optical fiber of the measurement three-component electromagnetic field signal of predetermined number
Emf sensor；Optical cable is adjoining three-component optical fiber top by the collection for the three-component optical fiber emf sensor
Spiral shell instrument, the three-component fibre optic gyroscope measurement and the adjoining three-component optical fiber electromagnetic field of the three-component fibre optic gyroscope
The three-component attitude data of sensor；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, described three points
Measuring optical fiber emf sensor includes adjoining three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection
The three-component fibre optic magnetic field sensor, the three-component electric field sensor of optic fibre and the three-component optical fiber top of optical cable distribution
Signal and the Laser Modulation demodulation instrument of data that spiral shell instrument measurement is obtained.
From the above, the offshore earthquake electromagnetic data harvester provided by the embodiment of the present application uses three points
Measure in optical fiber emf sensor collection marine electromagnetic field signal, collection optical cable without any electronic device, can be significantly
The manufacturing cost of marine electromagnetic data harvester is reduced, and is easy to the operation and maintenance at sea producing, very
The design and manufacture of offshore earthquake electromagnetic data harvester are simplified in big degree.Simultaneously as making information load using optical fiber
There can be more dense and quantity more electric on body, it is possible to achieve the measurement and monitoring of long-distance large-range, every collection optical cable
The harvester of magnetic field signal, can be with the component electromagnetic field data of collection high density ocean six of higher efficiency.With prior art phase
Than, the harvester provided using the embodiment of the present application can effectively improve marine electromagnetic data accuracy and reliability, and then
The accuracy and reliability for the underground geologic bodies target that marine electromagnetic data is detected can be improved, for realize to marine minerals,
The explorations such as petroleum resources provide data with overall merit and supported.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
Between the difference of other embodiment, each embodiment identical similar part mutually referring to.
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's
Spirit.
Claims (10)
1. a kind of offshore earthquake electromagnetic data harvester, including acquisition vessel, pull-type focus and pull-type current source, it is special
Levy and be, described device includes：
Pull the collection optical cable in the collection offshore earthquake electromagnetic data of the acquisition vessel stern；
The collection optical cable equal intervals are disposed with the four component optical fiber inspection of the measurement four component earthquake signal of predetermined number
The three-component optical fiber emf sensor of the measurement three-component electromagnetic field signal of ripple device and predetermined number；The four components optical fiber inspection
By the collection, optical cable is adjoining three-component optical fibre gyro respectively for ripple device and the three-component optical fiber emf sensor
Instrument, three-component fibre optic gyroscope measurement and four adjoining component optical fiber detectors of the three-component fibre optic gyroscope or
The three-component attitude data of three-component optical fiber emf sensor；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, the three-component light
Fine emf sensor includes adjoining three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection optical cable
The four components optical fiber detector, the three-component fibre optic magnetic field sensor, the three-component electric field sensor of optic fibre of distribution
The signal and the Laser Modulation demodulation instrument of data obtained with the three-component fibre optic gyroscope measurement.
2. device according to claim 1, it is characterised in that the four components optical fiber detector is listened including an optical fiber water
Device and a three-component optical fiber detector.
3. device according to claim 1, it is characterised in that the three-component electric field sensor of optic fibre is to use electroluminescent light
The electric field sensor of optic fibre of sink effect or the electric field sensor of optic fibre using piezoelectricity elasto-optical effect.
4. device according to claim 1, it is characterised in that the three-component fibre optic magnetic field sensor is to use faraday
The fibre optic magnetic field sensor of effect or the fibre optic magnetic field sensor using magnetostrictive effect.
5. device according to claim 1, it is characterised in that the three-component attitude data include inclination angle, azimuth and
Tendency.
6. device according to claim 1, it is characterised in that the scope set at equal intervals is 1.5 meters to 15 meters.
7. device according to claim 2, it is characterised in that the fibre optic hydrophone is interference type optical fiber hydrophone.
8. device according to claim 2, it is characterised in that the three-component optical fiber detector accelerates for three-component optical fiber
Spend sensor or three-component optical fiber vector hydrophone.
9. a kind of offshore earthquake electromagnetic data harvester, including acquisition vessel, pull-type focus, it is characterised in that described device
Including：
Pull the collection optical cable in the collection marine seismic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with four component optical fiber detectors of the measurement four component earthquake signal of predetermined number,
Optical cable is adjoining three-component fibre optic gyroscope, the three-component optical fiber by the collection for the four components optical fiber detector
Gyroscope measures the three-component attitude data with four adjoining component optical fiber detectors of the three-component fibre optic gyroscope；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection optical cable
The signal and the laser of data that the four components optical fiber detector and the three-component fibre optic gyroscope measurement of distribution are obtained are adjusted
System demodulation instrument.
10. a kind of offshore earthquake electromagnetic data harvester, including acquisition vessel, pull-type current source, it is characterised in that the dress
Put including：
Pull the collection optical cable in the collection marine electromagnetic data of the acquisition vessel stern；
The collection optical cable equal intervals are provided with the three-component optical fiber electromagnetism of the measurement three-component electromagnetic field signal of predetermined number
Field sensor；Optical cable is adjoining three-component optical fibre gyro by the collection for the three-component optical fiber emf sensor
Instrument, the three-component fibre optic gyroscope measurement is passed with the adjoining three-component optical fiber electromagnetic field of the three-component fibre optic gyroscope
The three-component attitude data of sensor；
Wherein, the three-component electromagnetic field signal includes three-component electric field signal and three-component magnetic field signal, the three-component light
Fine emf sensor includes adjoining three-component electric field sensor of optic fibre and three-component fibre optic magnetic field sensor；
The collection optical cable is provided with laser signal generator close to one end of the acquisition vessel and received along the collection optical cable
The three-component fibre optic magnetic field sensor, the three-component electric field sensor of optic fibre and the three-component fibre optic gyroscope of distribution
Measure obtained signal and the Laser Modulation demodulation instrument of data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720144358.0U CN206557401U (en) | 2017-02-17 | 2017-02-17 | A kind of offshore earthquake electromagnetic data harvester |
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| CN201720144358.0U CN206557401U (en) | 2017-02-17 | 2017-02-17 | A kind of offshore earthquake electromagnetic data harvester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873037A (en) * | 2017-02-17 | 2017-06-20 | 中国石油天然气集团公司 | A kind of offshore earthquake electromagnetic data harvester and method |
| CN107861150A (en) * | 2017-11-07 | 2018-03-30 | 吉林大学 | Based on the wave detector gesture recognition method rotated against between AHRS and wave detector |
| CN111337983A (en) * | 2018-12-18 | 2020-06-26 | 中国石油天然气股份有限公司 | Optical fiber hydrophone |
| WO2021000342A1 (en) * | 2019-07-01 | 2021-01-07 | 大连理工大学 | Apparatus for continuously measuring soil parameters of large-scale soft soil site |
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2017
- 2017-02-17 CN CN201720144358.0U patent/CN206557401U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873037A (en) * | 2017-02-17 | 2017-06-20 | 中国石油天然气集团公司 | A kind of offshore earthquake electromagnetic data harvester and method |
| CN107861150A (en) * | 2017-11-07 | 2018-03-30 | 吉林大学 | Based on the wave detector gesture recognition method rotated against between AHRS and wave detector |
| CN111337983A (en) * | 2018-12-18 | 2020-06-26 | 中国石油天然气股份有限公司 | Optical fiber hydrophone |
| WO2021000342A1 (en) * | 2019-07-01 | 2021-01-07 | 大连理工大学 | Apparatus for continuously measuring soil parameters of large-scale soft soil site |
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