CN208367030U - fiber grating ocean current detection sensor and ocean current detection system - Google Patents
fiber grating ocean current detection sensor and ocean current detection system Download PDFInfo
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- CN208367030U CN208367030U CN201821084227.9U CN201821084227U CN208367030U CN 208367030 U CN208367030 U CN 208367030U CN 201821084227 U CN201821084227 U CN 201821084227U CN 208367030 U CN208367030 U CN 208367030U
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- ocean current
- current detection
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Abstract
The utility model discloses a kind of fiber grating ocean current detection sensor and ocean current detection systems, are related to ocean current measurement technical field comprising two sensor fibres, the first connection optical fiber, horizontally disposed cowling panel and pressure sensitive cylinder；It is connected separately with horn-like manifold port at the both ends open of pressure sensitive cylinder, is provided with shell outside pressure sensitive cylinder, the shell and two manifold ports are tightly connected；Cowling panel is axially arranged in pressure sensitive cylinder；Two sensor fibres are circumferentially positioned at the both ends of pressure sensitive cylinder respectively, and several fiber-optic grating sensors are all in series on two sensor fibres, all closely connected outer wall in pressure sensitive cylinder of each fiber-optic grating sensor；One end of first connection optical fiber penetrates shell, is connect respectively with the input terminal of two sensor fibres and output end by single mode optical fiber.
Description
Technical field
The utility model relates to ocean current measurement technical fields, be specifically a kind of fiber grating ocean current detection sensor and
Ocean current detection system.
Background technique
Ocean current measurement includes flow velocity size and flow direction measurement.At present common measurement method have buoy drift hydrometry,
Anchored-position observation current method and three kinds of boating type hydrometry.Buoy drift hydrometry refers to that buoy is moved with ocean current, and record is floated downward
Target position and time, to calculate ocean current flow velocity.Be in early days using ship and etc. equipment ship is positioned, to measure buoy
Position, later use the methods of radar and aeroplane photography, improving buoy position positioning accuracy anchored-position observation current method is to survey ocean current
Measuring appratus is mounted on fixed ship, buoy or ocean platform, to measure to the ocean current of position a certain in ocean.
But installation carrier may have an impact measurement result with the movement of sea wind wave.Boating type hydrometry refers to installation measuring instrument
The carrier of device can measure ocean current while navigation, save the time.This flow measurement method mainly utilizes acoustic Doppler ocean current
Section plotter, it is very high with the accuracy requirement of fore and aft line installation angle, generally within, so generally will be to the labor of hull
Carry out angle compensation.
Measurement ocean current most convenient is reliably various types of current meter, and current meter is most normal in the velocity observer of ocean
Instrument.Current meter can be divided into mechanical current meter, electromagnetic type current meter, acoustic Doppler ocean current according to its working principle and cut open
Face instrument, hot wire type's current meter and particle image velocimeter etc..
Mechanical current meter mainly drives mechanical rotor rotation to measure flow velocity using ocean current.According to measurement result
The different form of output mainly has direct reading current meter, Ekman current meter, photograph type current meter, printed form current meter and magnetic record
Formula current meter etc..Its basic principle is all to drive rotor to rotate using water flow, obtains water flow by measuring the speed of rotor
Speed.Water (flow) direction is generally measured by tail vane or magnetic element.
Doppler current meter, that is, acoustic Doppler fluid velocity profile instrument is the one kind to grow up the early 1980s
Novel current meter.It is to measure flow velocity based on Doppler effect.Acoustic doppler current meter uses acoustic wave transducer as sensor,
Energy converter issues sound wave, receives reflected acoustic wave by the particulate material backscattering of uneven distribution in water body, then by energy converter, counts
It calculates Doppler frequency shift and converses flow velocity.
Hot wire type's current meter is to measure flow velocity using the wire heated in the seawater is placed, and wire is connected certain
Electric current, the temperature change and flow velocity of wire constitute certain amount relationship, measure stream using the relationship of temperature decline and flow velocity
Speed, this principle are also used for air velocity transducer.The hot line hot diaphragm type flow sensor of early stage utility model, oneself has going through for many years so far
History.Hot wire type's current meter belongs to contact type measurement instrument, while measurement of the seawater to the bigger meeting stream field of wire corruption candle of heating
Generate certain influence.
Particle image velocimeter is to follow the particle rapidity of fluid motion to measure mobility in ocean current by shooting and measuring.
Can some moment record a plane in all particles flowing information, can be used for by the comparison to multiple instantaneous flow fields non-
Steady flow process has high resolution, obtains the advantages such as contain much information, do not interfere tested flow field and can continuously measure.But
It is that the release of trace particle and the application of camera technique are limited in deep-sea.
The following aspects is mainly showed the shortcomings that technical products at present.
The characteristics of mechanical current meter be it is cheap, manufacturing technology is very mature, low in energy consumption, but its disadvantage is also ten clearly demarcated
Aobvious: there is friction in the bearing of rotor, the lesser ocean current of flow velocity is unable to drive rotor rotation, there are start velocity, be unable to measure compared with
Small seabed flow velocity, measurement range are small.The measurement error of flow direction is larger, typically no data processing function.Electromagnetic type current meter
Working principle is to form certain electromotive force using seawater as conductor cutting magnetic induction line to survey according to Faraday's electromagnetic induction law
Measure flow velocity size.Electromagnetic type current meter can be divided into artificial magnetic field electromagnetic type current meter and earth's magnetic field current meter by the formation in magnetic field.
Geomagnetic electrokinetograph can survey transition flow velocity and flow direction, and stream field influence is smaller, but influence vulnerable to neighbouring magnetic field.With tradition machinery formula sea
Flowmeter compares, and has many advantages, such as that mechanical friction is small, start velocity is low, the service life is long.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of detections of fiber grating ocean current
Sensor and ocean current detection system, realize the measurement to deep-sea ocean current flow velocity, flow direction.
To achieve the above objectives, the technical scheme adopted by the utility model is that: a kind of fiber grating ocean current detection sensor,
Including two sensor fibres, the first connection optical fiber, horizontally disposed cowling panel and pressure sensitive cylinder；The both ends of the pressure sensitive cylinder
Opening is connected separately with horn-like manifold port, is provided with shell outside pressure sensitive cylinder, and the shell and the sealing of two manifold ports connect
It connects；The cowling panel is axially arranged in pressure sensitive cylinder；Two sensor fibres are circumferentially positioned at the two of pressure sensitive cylinder respectively
End, and several fiber-optic grating sensors are all in series on two sensor fibres, each fiber-optic grating sensor is all closely connected in pressure sensitive
The outer wall of cylinder；One end of the first connection optical fiber penetrates shell, passes through the single mode optical fiber input terminal with two sensor fibres respectively
It is connected with output end.
Based on the above technical solution, manifold port is stretched out at the both ends of the cowling panel.
Based on the above technical solution, each fiber-optic grating sensor is uniformly arranged on the outer wall of pressure sensitive cylinder.
Based on the above technical solution, the junction of the first connection optical fiber and shell is provided with the first sheath.
It based on the above technical solution, further include the second connection optical fiber connected to the housing.
Based on the above technical solution, the upper end of the second connection optical fiber and the junction of shell are provided with second
The lower end of sheath, the second connection optical fiber is connected with counter weight.
Based on the above technical solution, the pressure sensitive cylinder is made of thin-wall stainless steel metal plate.
The utility model also provides a kind of ocean current detection system, including detecting ship, and the detection boat bottom is from top to bottom successively
At least one is in series with such as above-mentioned fiber grating ocean current detection sensor, every two adjacent fiber grating ocean current detection sensors
Between connected by fibre-optical splice, the fiber grating ocean current detection sensor of top layer is connected by the first connection optical fiber and detecting ship
It connects, the fiber grating ocean current detection sensor of bottom is connect by the second connection optical fiber with counter weight.
The utility model has the beneficial effects that:
The utility model discloses fiber grating principle and proposes a kind of fiber grating ocean current sensor, realizes to deep-sea ocean current
The measurement of flow velocity, flow direction.This sensor not only make simple, low in cost but also low in energy consumption, investigation depth is big, precision is high,
Sensitivity is good, anti-interference is good.Experiment shows that this its effective sensing scope of fiber grating ocean current sensor is 0~1000m,
Utilizing ocean current flow velocity is approximate with light echo in a linear relationship, sensitivity 0.1%FS, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fiber grating ocean current detection sensor in the utility model embodiment；
Fig. 2 is the operation principle schematic diagram of fiber grating ocean current detection sensor in the utility model embodiment；
Fig. 3 is the structural schematic diagram of ocean current detection system in the utility model embodiment.
Appended drawing reference:
100- fiber grating ocean current detection sensor；
101- cowling panel；102- pressure sensitive cylinder；103- manifold port；104- shell；105- sensor fibre；106- optical fiber light
Gate sensor；107- single mode optical fiber；The connection optical fiber of 108- first；The first sheath of 109-；The connection optical fiber of 110- second；111- second
Sheath；
200- fibre-optical splice；
300- counter weight；
400- detecting ship.
Specific embodiment
The embodiments of the present invention are described below in detail, the embodiment described example is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.
In the description of the present invention, it should be noted that for the noun of locality, if any term " center ", " laterally
(X) ", " longitudinal (Y) ", " vertical (Z) ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right",
The indicating positions such as "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship be based on
Orientation or positional relationship shown in the drawings is merely for convenience of narration the utility model and simplifies description, rather than instruction or dark
Showing signified device or element must have a particular orientation, be constructed and operated with particular orientation, should not be understood as limiting this reality
With novel specific protection scope.
In addition, being used for description purposes only if any term " first ", " second ", it is not understood to indicate or imply relatively heavy
The property wanted or the quantity for implicitly indicating technical characteristic." first " is defined as a result, " second " feature can be expressed or implicit include
One or more this feature, in the utility model description, " several ", " several " are meant that two or more, remove
It is non-separately to have clearly specific restriction.
Made below with reference to the attached drawing of specification by being further described to specific embodiment of the present utility model
The technical solution of the utility model and its benefits are clearer.Describing embodiment below with reference to attached drawing is to show
Example property, it is intended to explain the utility model, and should not be understood as limiting the present invention.
Shown in Figure 1, the utility model embodiment provides a kind of fiber grating ocean current detection sensor, and feature exists
In: including two sensor fibres 105, first connection optical fiber 108, horizontally disposed cowling panel 101 and pressure sensitive cylinder 102；
Horn-like manifold port 103 is connected separately at the both ends open of pressure sensitive cylinder 102, outside pressure sensitive cylinder 102
It is provided with shell 104, the shell 104 and two manifold ports 103 are tightly connected；Specifically, pressure sensitive cylinder 102 is stainless using thin-walled
Steel metal plate is made.
Cowling panel 101 is axially arranged in pressure sensitive cylinder 102；Specifically, confluence is stretched out at the both ends of cowling panel 101
Mouth 103.
Two sensor fibres 105 are circumferentially positioned at the both ends of pressure sensitive cylinder 102 respectively, and all go here and there on two sensor fibres 105
It is associated with several fiber-optic grating sensors 106, each all closely connected outer wall in pressure sensitive cylinder 102 of fiber-optic grating sensor 106；Specifically
, each fiber-optic grating sensor 106 is uniformly arranged on the outer wall of pressure sensitive cylinder 102.
First connection optical fiber 108 one end penetrate shell 104, by single mode optical fiber 107 respectively with two sensor fibres 105
Input terminal is connected with output end.Specifically, the junction of the first connection optical fiber 108 and shell 104 is provided with the first sheath 109.
Specifically, further including the second connection optical fiber 110 being connect with shell 104.This second connection optical fiber 110 upper end with
The junction of shell 104 is provided with the second sheath 111, and the lower end of the second connection optical fiber 110 is connected with counter weight 300.
Shown in Figure 3, the utility model embodiment also discloses a kind of ocean current detection system, including detecting ship 400, should
400 bottom of detecting ship is sequentially connected in series at least one such as above-mentioned fiber grating ocean current detection sensor 100, every phase from top to bottom
It is connected between two adjacent fiber grating ocean current detection sensors 100 by fibre-optical splice 200, the fiber grating ocean current detection of top layer
Sensor 100 is connect by the first connection optical fiber 108 with detecting ship 400, and the fiber grating ocean current detection sensor 100 of bottom is logical
The second connection optical fiber 110 is crossed to connect with counter weight 300.
The working principle of the utility model fiber grating ocean current detection sensor are as follows:
It is shown in Figure 2, sensor vertical is sunk to by seabed using the first connection optical fiber, ocean current passes through cowling panel, can be certainly
It is dynamic by sensor bucket rotate to ocean current parallel direction, ocean current reaches manifold port by cowling panel and reaches pressure sensitive cylinder, in sea
Stream imports direction, and since manifold port is different with the bore of pressure sensitive cylinder, seawater enters pressure sensitive cylinder by manifold port can be to pressure
Power incudes cylinder and generates pressure, expands pressure sensitive cylinder, and pressure sensitive cylinder is prepared using thin-wall stainless steel metal plate, fiber grating
Sensor experiences the dilatancy of pressure sensitive cylinder.Dilatancy amount is directly proportional to water velocity.
In the description of specification, reference term " one embodiment ", " preferably ", " example ", " specific example " or " one
The description of a little examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example, is contained in
In at least one embodiment or example of the utility model, in the present specification not necessarily for the schematic representation of above-mentioned term
Refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any one
It is combined in a suitable manner in a or multiple embodiments or example.
The utility model is not limited to above embodiment, for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within novel protection scope.The content being not described in detail in this specification belongs to well known to professional and technical personnel in the field
The prior art.
Claims (8)
1. a kind of fiber grating ocean current detection sensor, it is characterised in that: including two sensor fibres (105), the first connection optical fiber
(108), horizontally disposed cowling panel (101) and pressure sensitive cylinder (102)；
Horn-like manifold port (103), pressure sensitive cylinder are connected separately at the both ends open of the pressure sensitive cylinder (102)
(102) shell (104) are provided with outside, the shell (104) and two manifold ports (103) are tightly connected；
The cowling panel (101) is axially arranged in pressure sensitive cylinder (102)；
Two sensor fibres (105) are circumferentially positioned at the both ends of pressure sensitive cylinder (102) respectively, and on two sensor fibres (105) all
It is in series with several fiber-optic grating sensors (106), each fiber-optic grating sensor (106) is all closely connected in pressure sensitive cylinder (102)
Outer wall；
It is described first connection optical fiber (108) one end penetrate shell (104), by single mode optical fiber (107) respectively with two sense lights
The input terminal of fine (105) is connected with output end.
2. fiber grating ocean current detection sensor as described in claim 1, it is characterised in that: the two of the cowling panel (101)
Manifold port (103) are stretched out in end.
3. fiber grating ocean current detection sensor as described in claim 1, it is characterised in that: each fiber-optic grating sensor
(106) it is uniformly arranged on the outer wall of pressure sensitive cylinder (102).
4. fiber grating ocean current detection sensor as described in claim 1, it is characterised in that: the first connection optical fiber
(108) junction of shell (104) is provided with the first sheath (109).
5. fiber grating ocean current detection sensor as described in claim 1, it is characterised in that: further include connecting with shell (104)
The second connection optical fiber (110) connect.
6. fiber grating ocean current detection sensor as claimed in claim 5, it is characterised in that: the second connection optical fiber
(110) junction of upper end and shell (104) is provided with the second sheath (111), the lower end connection of the second connection optical fiber (110)
There are counter weight (300).
7. fiber grating ocean current detection sensor as described in claim 1, it is characterised in that: the pressure sensitive cylinder (102)
It is made of thin-wall stainless steel metal plate.
8. a kind of ocean current detection system, including detecting ship (400), it is characterised in that: detecting ship (400) bottom from top to bottom according to
It is secondary to be in series at least one fiber grating ocean current detection sensor (100) as described in claim 1, per two adjacent optical fiber light
It is connected between grid ocean current detection sensor (100) by fibre-optical splice (200), the fiber grating ocean current detection sensor of top layer
(100) it is connect by the first connection optical fiber (108) with detecting ship (400), the fiber grating ocean current detection sensor (100) of bottom
It is connect by the second connection optical fiber (110) with counter weight (300).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821084227.9U CN208367030U (en) | 2018-07-10 | 2018-07-10 | fiber grating ocean current detection sensor and ocean current detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821084227.9U CN208367030U (en) | 2018-07-10 | 2018-07-10 | fiber grating ocean current detection sensor and ocean current detection system |
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| CN208367030U true CN208367030U (en) | 2019-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693379A (en) * | 2018-07-10 | 2018-10-23 | 湖北文索光电科技有限公司 | fiber grating ocean current detection sensor and ocean current detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693379A (en) * | 2018-07-10 | 2018-10-23 | 湖北文索光电科技有限公司 | fiber grating ocean current detection sensor and ocean current detection system |
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Granted publication date: 20190111 Termination date: 20210710 |