CN207164267U - A kind of neritic area seabed High-Precision Gravimeter Survey system - Google Patents
A kind of neritic area seabed High-Precision Gravimeter Survey system Download PDFInfo
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- CN207164267U CN207164267U CN201721185098.8U CN201721185098U CN207164267U CN 207164267 U CN207164267 U CN 207164267U CN 201721185098 U CN201721185098 U CN 201721185098U CN 207164267 U CN207164267 U CN 207164267U
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Abstract
A kind of neritic area seabed High-Precision Gravimeter Survey system is the utility model is related to, belongs to gravity measurement field, device includes workboat, sea-bottom gravimeter system and navigation system；Sea-bottom gravimeter system includes control system, gravimeter on ship, and control system is located on workboat on ship, and control system is connected by communication cable with gravimeter on ship；Navigation system includes GPS system, star station satellite difference system and ultra-short baseline acoustic positioning system, GPS system is used to carry out traveling navigation to workboat, star station satellite difference system is used to carry out three-dimensional localization waterborne, and ultra-short baseline acoustic positioning system is used to carry out underwater 3 D positioning；Workboat is provided with electric supply installation and winch, and electric supply installation is connected by service cable with control system, winch, star station satellite difference system and ultra-short baseline acoustic positioning system on ship.The technical solution of the utility model substantially increases seabed gravity station positioning precision, can meet that gravity specification is not more than ± 10 meters of requirement.
Description
Technical field
It the utility model is related to a kind of neritic area seabed High-Precision Gravimeter Survey system, and in particular to 0~200m depth of waters sea
Bottom High-Precision Gravimeter Survey system, belongs to gravity measurement field.
Background technology
At present, High-Precision Gravimeter Survey system in neritic area seabed carries out plane positioning waterborne merely with GPS, fails into water-filling
Lower plane is positioned, and gravimeter by ocean current impact due to that can be shifted in water, and the depth of water is deeper, and skew is bigger, and positioning precision is got over
Difference.Our unit once disclosed Chinese patent document " a kind of super shallow sea seabed High-Precision Gravimeter Survey system, application number
201620485470.6 ", there is provided a kind of super shallow sea seabed High-Precision Gravimeter Survey system, but the program is only applicable to 50 meters
Within super shallow sea high-precision gravity and magnetic, when the depth of water is more than 50 meters, its positioning precision can not meet that gravity specification is little
In ± 10 meters of required precision.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of neritic area seabed High-Precision Gravimeter Survey system.
The technical solution of the utility model is as follows：
A kind of neritic area seabed High-Precision Gravimeter Survey system, including workboat, sea-bottom gravimeter system and navigation system；
Sea-bottom gravimeter system includes control system, gravimeter on ship, and control system is located on workboat on ship, is grasped on ship
Control system is connected by communication cable with gravimeter；Gravimeter sinks to seabed at work；
Navigation system includes GPS system, star station satellite difference system and ultra-short baseline acoustic positioning system, GPS system
Positioning precision is poor, so GPS system is used to carry out traveling navigation to workboat, shallow sea gravity station theoretical planes coordinate is defeated
After entering into GPS system, guiding workboat reaches gravimetric station position；The positioning precision of star station satellite difference system is high, but leads
Function of navigating is poor, and star station satellite difference system is used to carry out three-dimensional localization waterborne, and ultra-short baseline acoustic positioning system is used for into water-filling
Lower three-dimensional localization；
Workboat is provided with electric supply installation and winch, and electric supply installation passes through control system, winch, star on service cable and ship
Satellite difference system of standing connects with ultra-short baseline acoustic positioning system.
Preferable according to the utility model, ultra-short baseline acoustic positioning system includes optical fiber inertial navigation system, acoustics changes
Energy device and acoustics transponder, optical fiber inertial navigation system, acoustic transducer are located on workboat, and acoustics transponder is located at gravimeter
On.
It is further preferred that acoustic transducer is located at workboat fore bottom.To shorten the distance with gravimeter, weight is realized
Power instrument combines as a whole with ultra-short baseline acoustic positioning system.
It is further preferred that optical fiber inertial navigation system passes through communication cable and star station satellite difference system, acoustic transducer
Device connects.
It is further preferred that acoustics transponder is located on the central axis above gravimeter.Increase underwater 3 D positioning
Accuracy.
Acoustic transducer launches acoustic signals to acoustics transponder, acoustics transponder is connected on receive interrogation signal after, transmitting
The response signal for being different from interrogation signal returns to acoustic transducer, response signal via communication cable through data acquisition process, according to
According to the distance and bearing of measurement acoustics transponder, acoustics transponder is calculated relative to boat-carrying acoustic transducer three dimensions seabed
The coordinate of position, the geodetic coordinates of acoustics transponder is conversed finally by the gps coordinate of relative position and acoustic transducer, with
Reach the purpose positioned in real time.Three-dimensional localization waterborne is carried out using star station satellite difference system, and is determined with reference to ultra-short baseline acoustic
Position system carries out seabed gravity station three-dimensional localization, and positioning precision can meet High-Precision Gravimeter Survey code requirement.
Preferable according to the utility model, gravimeter includes levelling device, gas-tight silo, counterweight frame, and counterweight frame is placed in
On the outside of gravimeter, control system is connected by communication cable with levelling device, gas-tight silo on ship.
Sea-bottom gravimeter ability correct measurement reading, gravimeter must need first to be adjusted under horizontality after sinking to seabed
Flat work.Levelling device built in gravimeter, Levelling operation can be carried out to gravimeter under heeling condition of the gradient less than 25 °, protected
Card gravimeter is in reading under horizontality.Main X, Y the both direction servo by intersecting vertically of sea-bottom gravimeter levelling device
Motor is formed, and during work, gravimeter is first adjusted to X-direction horizontality by X-direction servomotor, and then Y-direction servomotor will
Gravimeter is adjusted to Y-direction horizontality, and levelling device is by gravimeter leveling to ± 20 second of arcs, so as to ensure that gravimeter totally reaches
To horizontality.
The effect of gas-tight silo mainly has 2 aspects：(1) completely cuts off immersion of the seawater to gravimeter electronic component and circuit；(2) grams
Vibration interference of the seawater flowing to gravimeter sensing system is taken, so as to form stable gravity measuring system.Gas-tight silo is by upper and lower
Two dome-type seal closures are connected as ball-type by support ring, and sphere diameter 80cm, seal closure and support ring are alloy material, tool
Anti- seawater corrosion ability.O-shaped rubber seal is lined between upper and lower two seal closure, to ensure in shallow sea area (in the 200m depth of waters)
It is water-tight.
The counterweight frame in gas-tight silo exterior design, is influenceed, counterweight frame is to reduce gravimeter by the impact of ocean current
Stainless steel tube material, counterweight can be increased in base of frame according to ocean current size, to improve gravimeter measurement stability.
Control system is connected by communication cable with each inductor in gravimeter core on ship, is realized aboard ship to seabed weight
Power instrument carries out every straighforward operation, mainly has：(1) after sea-bottom gravimeter is powered, control system adds to gravimeter automatically on ship
Heat, to ensure that gravimeter quartz spring sensitive system is in normal survey measurements under temperature constant state.(2) realize to sea-bottom gravimeter
Carry out Levelling operation and survey measurements.Sea-bottom gravimeter X, Y-direction inclination conditions and reading feelings can be monitored in measurement process in real time
Condition, so as to monitor measurement data quality.In order to check gas-tight silo whether leak, control system carries out gas-tight silo leakage in real time on ship
Water monitoring, when gas-tight silo leak, control system sends alarm signal, to be handled in time.
It is as follows that gravimetric workflow is carried out using above-mentioned neritic area seabed High-Precision Gravimeter Survey system：
(1) gravimetric station position is reached using the navigation feature guiding workboat of GPS system；
(2) gravimeter is sunk into seabed using winch；
(3) leveling is carried out to gravimeter by control system on ship, then survey measurements；
(4) while gravimeter carries out gravity measurement, star station satellite difference system measurement gravity measurement point coordinates is utilized；
(5) carry out water-depth measurement using ultra-short baseline acoustic positioning system while gravimeter reading and record, to carry out
Gravity anomaly Bouguer correction；(correction is after obtaining bathymetric data, to carry out data correction using EXCEL on computers, belong to
Later data correction process)
(6) after reading, gravimeter is closed, gravimeter is lifted on workboat.
The depth of water is less than 4m marine sites, using the canoe of shallow draft as workboat, is filled using small power generator as power supply
Put, gravimeter is sunk under water using 1.2kw hoist engines and measured.Hoist engine carries out gravimeter using common galvanized steel cable and hung
Dress, gravimeter power supply and communication are carried out using 4 core cables.
The depth of water is more than 4m marine sites, using 400 horsepowers of big ships, using 10kw threephase generators as electric supply installation, utilizes liquid
Sea-bottom gravimeter is sunk to seabed and measured by pressure winch, and hydraulic wireline winch uses 7 core zinc-coated wire armored cables, is hung with realizing
Dress, power supply and communication function.
The beneficial effects of the utility model are：
The technical solution of the utility model proposes carries out underwater gravimeter positioning using ultra-short baseline acoustic positioning system,
Seabed gravity station positioning precision is substantially increased, forms the seabed High-Precision Gravimeter Survey system of positioning and measurement perfect in shape and function
System, the neritic zone within 200 meters of depth of water, positioning precision can meet that gravity specification is not more than ± 10 meters of requirement, therefore can answer
For 0-200 rice depth of water neritic areas seabed High-Precision Gravimeter Survey.And due to star station satellite difference system and ultra-short baseline acoustic
The introducing of alignment system, the real-time three-dimensional positioning waterborne and underwater of seabed gravity station is realized, so as to no longer need to set up tidal observation
Stand and carry out tidal observation work, improve method of work, reduce working link, improve gravity anomaly precision.
Brief description of the drawings
Fig. 1 is the utility model neritic area seabed High-Precision Gravimeter Survey system schematic；
Wherein：
1-1, GPS system, 1-2, GPS system antenna, 1-3, star station satellite difference system, 1-4, star station satellite difference system
Antenna；1-5, optical fiber inertial navigation system, 1-6, acoustic transducer, 1-7, acoustics transponder；
2nd, workboat, 2-1, generator, 2-2, winch；
Control system on 3-1, ship, 3-2, gravimeter, 3-3, counterweight frame；
4th, sea, 5, seabed.
Embodiment
The utility model is described further by way of example and in conjunction with the accompanying drawings, but not limited to this.
Embodiment 1：
A kind of neritic area seabed High-Precision Gravimeter Survey system, including workboat 2, sea-bottom gravimeter system and navigation system
System.
Sea-bottom gravimeter system includes control system 3-1, gravimeter 3-2 on ship, and control system 3-1 is located at workboat on ship
On 2, control system 3-1 is connected by communication cable with gravimeter 3-2 on ship, and gravimeter sinks to seabed at work.Gravimeter
Core is without electrostatic quartz consolidation spring structure sensitive system, so as to ensure that the high sensitivity of gravimeter.Gravimeter measures model
Enclose up to 8000 × 10-5m/s2, can reading covering the whole world, the instrument can under the heeling condition in ± 200 second of arcs reading.
Navigation system includes GPS system 1-1, star station satellite difference system 1-3 and ultra-short baseline acoustic positioning system, GPS
The positioning precision of system is poor, so GPS system is used to carry out traveling navigation to workboat, by shallow sea gravity station theoretical planes
After coordinate is input in GPS system, guiding workboat reaches gravimetric station position, the GPS system antenna above GPS system 1-1
1-2 is the part of GPS system, plays a part of to receive satellite-signal.The positioning precision of star station satellite difference system is high, but leads
Function of navigating is poor, and star station satellite difference system is used to carry out three-dimensional localization waterborne, and the star station above the satellite difference system 1-3 of star station is defended
Star differential system antenna 1-4 is the part of star station satellite difference system, plays a part of to receive satellite-signal.Ultra-short baseline sound
Alignment system is learned to be used to carry out underwater 3 D positioning；Ultra-short baseline acoustic positioning system includes optical fiber inertial navigation system 1-5, sound
Transducer 1-6 and acoustics transponder 1-7 is learned, optical fiber inertial navigation system 1-5, acoustic transducer 1-6 are located on workboat 2, sound
Learn transponder 1-7 to be located on gravimeter 3-2, optical fiber inertial navigation system 1-5 passes through communication cable and star station satellite difference system
1-3, acoustic transducer 1-6 connections.
Optical fiber inertial navigation system is the OCTANS-5 optical fiber inertial navigation systems of French IXSEA Corp. production, and acoustics changes
Can the type acoustic transducers of BATS 4213, the type acoustics of BATS 4380 of device, acoustics transponder for the production of EDGETECH companies of the U.S.
Transponder.Ultra-short baseline acoustic positioning system instead of the effect of pressure sensor.
Workboat 2 is provided with electric supply installation and winch 2-2, and the present embodiment electric supply installation is generator 2-1, and electric supply installation leads to
Cross service cable and control system 3-1, winch 2-2, star station satellite difference system 1-3 and ultra-short baseline acoustic positioning system on ship
The 1-5 connections of optical fiber inertial navigation system.The effect of winch is at the uniform velocity steadily to lift or draw sea-bottom gravimeter in work, is ensured
Gravimeter movement is accurate and safe；The seabed gravity measuring system that act as of electric supply installation is respectively supplied and conveyed with power utilization instrument device
Electric power；Workboat act as seabed gravity measurement and instrument and equipment placement offer platform.
Control system is connected by communication cable with each inductor in gravimeter core on ship, is realized aboard ship to seabed weight
Power instrument carries out every straighforward operation, mainly has：(1) after sea-bottom gravimeter is powered, control system adds to gravimeter automatically on ship
Heat, to ensure that gravimeter quartz spring sensitive system is in normal survey measurements under temperature constant state.(2) realize to sea-bottom gravimeter
Carry out Levelling operation and survey measurements.Sea-bottom gravimeter X, Y-direction inclination conditions and reading feelings can be monitored in measurement process in real time
Condition, so as to monitor measurement data quality.In order to check gas-tight silo whether leak, control system carries out gas-tight silo leakage in real time on ship
Water monitoring, when gas-tight silo leak, control system sends alarm signal, to be handled in time.
It is as follows that gravimetric workflow is carried out using above-mentioned neritic area seabed High-Precision Gravimeter Survey system：
(1) gravimetric station position is reached using the navigation feature guiding workboat of GPS system；
(2) gravimeter is sunk into seabed using winch；
(3) leveling is carried out to gravimeter by control system on ship, then survey measurements；
(4) while gravimeter carries out gravity measurement, star station satellite difference system measurement gravity measurement point coordinates is utilized；
(5) carry out water-depth measurement using ultra-short baseline acoustic positioning system while gravimeter reading and record, to carry out
Gravity anomaly Bouguer correction；(correction is after obtaining bathymetric data, to carry out data correction using EXCEL on computers, belong to
Later data correction process)
(6) after reading, gravimeter is closed, gravimeter is lifted on workboat.
Embodiment 2：
A kind of neritic area seabed High-Precision Gravimeter Survey system, its structure as described in Example 1, except that, acoustics
Transducer is located at workboat fore bottom.To shorten the distance with gravimeter, realize that gravimeter is with ultra-short baseline acoustic positioning
System combines as a whole.
Embodiment 3：
A kind of neritic area seabed High-Precision Gravimeter Survey system, its structure as described in Example 2, except that, acoustics
Transponder is located on the central axis above gravimeter.Increase the accuracy of underwater 3 D positioning.
Acoustic transducer launches acoustic signals to acoustics transponder, acoustics transponder is connected on receive interrogation signal after, transmitting
The response signal for being different from interrogation signal returns to acoustic transducer, response signal via communication cable through data acquisition process, according to
According to the distance and bearing of measurement acoustics transponder, acoustics transponder is calculated relative to boat-carrying acoustic transducer three dimensions seabed
The coordinate of position, the geodetic coordinates of acoustics transponder is conversed finally by the gps coordinate of relative position and acoustic transducer, with
Reach the purpose positioned in real time.Three-dimensional localization waterborne is carried out using star station satellite difference system, and is determined with reference to ultra-short baseline acoustic
Position system carries out seabed gravity station three-dimensional localization, and positioning precision can meet High-Precision Gravimeter Survey code requirement.
Embodiment 4：
A kind of neritic area seabed High-Precision Gravimeter Survey system, its structure as described in Example 1, except that, gravity
Instrument includes levelling device, gas-tight silo, counterweight frame, and counterweight frame is placed on the outside of gravimeter, and control system is by communicating electricity on ship
Cable is connected with levelling device, gas-tight silo.
Claims (6)
- A kind of 1. neritic area seabed High-Precision Gravimeter Survey system, it is characterised in that including workboat, sea-bottom gravimeter system and Navigation system；Sea-bottom gravimeter system includes control system, gravimeter on ship, and control system is located on workboat on ship, and system is manipulated on ship System is connected by communication cable with gravimeter；Navigation system includes GPS system, star station satellite difference system and ultra-short baseline acoustic positioning system, and GPS system is used for pair Workboat carries out traveling navigation, and star station satellite difference system is used to carry out three-dimensional localization waterborne, ultra-short baseline acoustic positioning system For carrying out underwater 3 D positioning；Workboat is provided with electric supply installation and winch, and electric supply installation is defended by service cable and control system, winch, star station on ship Star differential system connects with ultra-short baseline acoustic positioning system.
- 2. neritic area seabed High-Precision Gravimeter Survey system according to claim 1, it is characterised in that ultra-short baseline acoustic Alignment system includes optical fiber inertial navigation system, acoustic transducer and acoustics transponder, optical fiber inertial navigation system, acoustic transducer Device is located on workboat, and acoustics transponder is located on gravimeter.
- 3. neritic area seabed High-Precision Gravimeter Survey system according to claim 2, it is characterised in that acoustic transducer position In workboat fore bottom.
- 4. neritic area seabed High-Precision Gravimeter Survey system according to claim 2, it is characterised in that optical fiber inertial navigation System is connected by communication cable with star station satellite difference system, acoustic transducer.
- 5. neritic area seabed High-Precision Gravimeter Survey system according to claim 3, it is characterised in that acoustics transponder position On central axis above the gravimeter.
- 6. neritic area seabed High-Precision Gravimeter Survey system according to claim 1, it is characterised in that gravimeter includes adjusting Leveling device, gas-tight silo, counterweight frame, counterweight frame are placed on the outside of gravimeter, and control system passes through communication cable and leveling on ship Device, gas-tight silo connection.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001829A (en) * | 2018-07-12 | 2018-12-14 | 中国人民解放军国防科技大学 | Strapdown underwater dynamic gravity measuring instrument |
| WO2020151214A1 (en) * | 2019-01-22 | 2020-07-30 | 青岛秀山移动测量有限公司 | Multi-sensor data fusion method for integrated surveying and mapping of intertidal zone |
| CN111895277A (en) * | 2020-08-07 | 2020-11-06 | 中国石油大学(北京) | Submarine pipeline defect positioning method, device, equipment and system |
| CN113777661A (en) * | 2021-08-24 | 2021-12-10 | 青岛海洋地质研究所 | Offshore bottom gravity measurement device and measurement method |
-
2017
- 2017-09-15 CN CN201721185098.8U patent/CN207164267U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001829A (en) * | 2018-07-12 | 2018-12-14 | 中国人民解放军国防科技大学 | Strapdown underwater dynamic gravity measuring instrument |
| WO2020151214A1 (en) * | 2019-01-22 | 2020-07-30 | 青岛秀山移动测量有限公司 | Multi-sensor data fusion method for integrated surveying and mapping of intertidal zone |
| CN111895277A (en) * | 2020-08-07 | 2020-11-06 | 中国石油大学(北京) | Submarine pipeline defect positioning method, device, equipment and system |
| CN113777661A (en) * | 2021-08-24 | 2021-12-10 | 青岛海洋地质研究所 | Offshore bottom gravity measurement device and measurement method |
| CN113777661B (en) * | 2021-08-24 | 2022-06-28 | 青岛海洋地质研究所 | Offshore bottom gravity measurement device and measurement method |
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