CN109475015A - A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater - Google Patents
A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater Download PDFInfo
- Publication number
- CN109475015A CN109475015A CN201811390735.4A CN201811390735A CN109475015A CN 109475015 A CN109475015 A CN 109475015A CN 201811390735 A CN201811390735 A CN 201811390735A CN 109475015 A CN109475015 A CN 109475015A
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- Prior art keywords
- cage
- magnetic
- heater
- heater strip
- spherical
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- 238000009413 insulation Methods 0.000 claims abstract description 33
- 238000005253 cladding Methods 0.000 claims abstract description 21
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 6
- 230000004992 fission Effects 0.000 claims abstract description 6
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 6
- 229910052701 rubidium Inorganic materials 0.000 abstract description 4
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical group [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical group 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005311 nuclear magnetism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/60—Electronic or nuclear magnetic resonance gyrometers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
The present invention relates to a kind of cages for magnetic resonance gyroscope instrument without magnetic heater, it is designed using cage fission, multichannel annular groove is designed for arranging that heater strip, part material select the alumina ceramic material with high thermal conductivity coefficient, high temperature resistant, good insulation properties in part outer surface；Insulating sections are spherical insulation cladding, and using spherical seperated design, part material uses low thermal conductivity, phenoplasts resistant to high temperature；Heater strip uses multiple twin mode, arranges multiple twin heater strip along part outer surface weft direction annular groove, warp through slot is for being connected to weft annular groove, convenient for a multiple twin heater strip in entire cage heater body continuous coiling.The present invention can guarantee that the rubidium atom in gas chamber can work in the environment that temperature is 100 DEG C ± 0.1 DEG C, while the additional interference magnetic field < 0.2nT generated, can satisfy demand of the magnetic resonance gyroscope instrument core plenum section to isoperibol.
Description
Technical field
The present invention relates to inertia measurement sensor technical field, especially a kind of high-precision, small size, low cost, to adding
The insensitive magnetic resonance gyroscope instrument of speed is the upgrading to existing inertial survey technique equipment.
Background technique
It is known as magnetic resonance gyroscope instrument using the gyroscope that atom nuclear magnetic resonance principle works, people have been developed more so far
The magnetic resonance gyroscope instrument of seed type.Nuclear magnetic resonance is just proposed early in the Leete and Hansen of nineteen fifty-two General Electric Co. Limited
The imagination of gyro.The correlative study work since the 1960s of Singer-Kearfott company and Litton company.
The two companies in 1979 make nuclear polarisation using pump light, extract magnetic resonance gyroscope signal by photodetector, respectively
The principle prototype of magnetic resonance gyroscope is developed, and obtains patent, the precision of gyro reaches navigation rank.
Magnetic resonance gyroscope instrument working principle are as follows: the collision between polarization alkali metal atom and rare-gas atom, it can be with
Realize the polarization to rare-gas atom nuclear spin, magnetic resonance gyroscope instrument utilizes the cross-polarization component of rare-gas atom core
The frequency displacement of precession frequency perceives external rotation situation in outfield, realizes the measurement of carrier angular speed.
Magnetic resonance gyroscope instrument Proof-Of Principle system element is as shown in Figure 1.Fig. 1 is the core based on spin impact polarization
Magnetic resonance gyroscope scheme schematic diagram can clearly find out that the composition of magnetic resonance gyroscope instrument can be divided into: light path part, angle speed
Spend Sensor section and signal detection part.Angular-rate sensor part is by alternating magnetic field coil, heating constant-temperature equipment, gas chamber etc.
Composition.
The detection process of NMR signal is divided into three steps: step 1: applying a stable magnetostatic field B0And one
The inclined pump light of beam circle, alkali metal atom polarizes under the action of magnetic field and pump light in gas chamber, then again by with working substance
Matter is freely collided, and polarization is passed to operation material, final to generate a macroscopic moment M.Step 2: being laterally applied to a radio frequency
, the frequencies omega of radiofrequency field is nuclear Larmor precession frequency.At this moment nuclear magnetic moment M deviates B0Axis, and around B0Axis
Rotation.Step 3: applying the detection light of a branch of linear polarization in radio frequency field direction, then detects and receive in the other end.Not such as carrier
Dynamic, the precession frequency measured is ω=γ B0, wherein γ is the gyromagnetic ratio of spin particle；When carrier is with ωrWhen rotation, measurement
The precession frequency arrived is ω=γ B0+ωr, then carrier ω can be calculatedr=ω-γ B0。
Atomic air chamber is the core of entire detection device, carries and appoints the key that detection information is converted into optical signal
It is engaged in, the size of atomicity density directly affects the power of light and atomic interaction, the rate collided between atom in gas chamber
And the relaxation speed of atom, thus a set of heating device is needed to control gas chamber temperature, keeps stable atomicity close
Degree.Heating process is typically all to be realized using electric heating, must introduce various electric currents, volume will be generated in whole system
Outer interference magnetic field, is coupled in Spin precession frequency, and then increases measurement error.
There are mainly three types of currently used heating means: air-flow heating, conduction heating, Resistant heating.Air-flow heats not
Interference magnetic field can be introduced, but temperature stability is not high, flow perturbation is larger, and heating uniformity is bad.Conduction heating, structure are multiple
Miscellaneous, heating time is long, and temperature stability is not high.Resistant heating, easily operated, temperature stability is good, but can introduce interference magnetic
, Special controlling need to be carried out to heating means.
Summary of the invention
In place of making up the deficiencies in the prior art, a kind of cage for magnetic resonance gyroscope instrument is provided
Formula provides 100 DEG C ± 0.1 DEG C of temperature environment for magnetic resonance gyroscope instrument core plenum section, generates simultaneously without magnetic heater
Additional interference magnetic field < 0.2nT.
The purpose of the present invention is what is realized by following technological means:
A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater, it is characterised in that: heats this without magnetic including cage
Body, spherical insulation cladding and heater strip, cage are mounted in spherical insulation cladding without magnetic heater body, and heater strip is inlaid in cage without magnetic
On heater body.
Moreover, the cage is designed without magnetic heater body using cage fission comprising cage is without magnetic heating cover and cage
Formula connects to form a cage sphere knot without magnetic heated seats with cage without magnetic heating cover without magnetic heated seats, cage by installing seam allowance
Structure designs weft direction annular groove for arranging multiple twin heater strip along weft in cage outer surface of spheroid；Go out to pass through along warp arrangement
Line direction annular groove is convenient for multiple twin heater strip across wire casing continuous coiling；Equator cross quadrature position designs two-way light hole；?
The inserted positioning structure with heater strip and spherical insulation cladding installation connection is separately designed out inside and outside bottom.
Moreover, the cage uses the oxidation with high thermal conductivity coefficient, high temperature resistant, good insulation properties without magnetic heater body
Aluminium ceramic material is made.
Moreover, the spherical insulation cladding is using spherical seperated design comprising spherical insulation cover and spherical thermal insulating seat, ball
Shape insulation cover is connected with spherical thermal insulating seat using seam allowance location structure, and spherical insulation cladding is designed along equator cross quadrature position
Two-way light hole；It separately designs out inside and outside bottom and pacifies with cage without the plug-in type of magnetic heater body and the installation connection of other components
Set bit architecture.
Moreover, the spherical insulation cladding is made of low thermal conductivity, phenoplasts resistant to high temperature.
Moreover, the heater strip includes multiple twin heater strip, weft cross-slot line and lead-in wire terminal, the multiple twin heater strip, weft
Cross-slot line and lead-in wire terminal are entwined by a twisted pair, and multiple twin heater strip is multiple and is connected by weft cross-slot line, weft
The lower end of cross-slot line connects lead-in wire terminal, and multiple twin heater strip and weft cross-slot line are wound on weft of the cage without magnetic heater body respectively
In direction annular groove and warp direction annular groove, lead-in wire terminal is inserted into cage and positions knot without the made plug-in type of magnetic heater body bottom inside
In structure.
The advantages and positive effects of the present invention are:
1, the cage that the present invention designs is without magnetic heater by cage heater body, spherical insulation cladding and multiple twin heater strip group
At can guarantee that the rubidium atom in gas chamber can work is in 100 DEG C ± 0.1 DEG C of environment in temperature, while the additional interference generated
Magnetic field < 0.2nT can satisfy demand of the magnetic resonance gyroscope instrument core plenum section to isoperibol.
2, the heating part designed by the present invention is cage heater body, is designed using cage fission, and part material uses
With high thermal conductivity coefficient, high temperature resistant, the special ceramic materials of good insulation properties, annular groove is designed for arranging in part outer surface
Multiple twin heater strip, to temperature, to the requirement in magnetic field when meeting gas chamber work, bulk temperature is uniform, keeps rubidium atom in gas chamber dense
The stability of degree, additional interference magnetic field is low, advantageously ensures that the stability of magnetic resonance gyroscope instrument output angular velocity signal.
3, the cage heater structure design designed by the present invention is simple, and process implementing is convenient, and temperature control precision is high, fits
For systems such as magnetic resonance gyroscope instrument.
4, the utility model magnetic resonance gyroscope instrument cage is put forward for the first time at home without magnetic heater, has been used for laboratory nuclear-magnetism
In resonance gyroscope principle system.The new structure cage is simple without magnetic heater structure, and process implementing is convenient.Using this method
Afterwards, gas chamber temperature-controllable is at 100 DEG C ± 0.1 DEG C in magnetic resonance gyroscope instrument angular-rate sensor, produced additional interference magnetic field
Lower than 0.2nT, provided a strong guarantee for entire promotion of item.
Detailed description of the invention
Fig. 1 is the magnetic resonance gyroscope instrument scheme schematic diagram based on spin impact polarization；
Fig. 2 is three-dimensional explosive view of the cage without magnetic heater body；
Fig. 3 is the three-dimensional explosive view of spherical insulation cladding；
Fig. 4 be heater strip in cage without the coiling schematic diagram on magnetic heater body；
Fig. 5 is cage without the whole three-dimensional explosive view of magnetic heater.
In figure: 1. cages are without magnetic heating cover；11. weft direction annular groove；12. warp direction annular groove；13,23. two-way light passing
Hole；2. cage is without magnetic heated seats；21. installing seam allowance；22. inserted positioning structure；3. spherical insulation cover；4. spherical thermal insulating seat；
5. multiple twin heater strip；6. weft cross-slot line；7. lead-in wire terminal.
Specific embodiment
With reference to the accompanying drawing in detail narration the embodiment of the present invention, it should be noted that the present embodiment be it is narrative, no
It is restrictive, this does not limit the scope of protection of the present invention.
A kind of cage for magnetic resonance gyroscope instrument is without magnetic heater, including cage is without magnetic heater body, spherical heat preservation
Shell and heater strip, cage are mounted in spherical insulation cladding without magnetic heater body, and heater strip is inlaid in cage without on magnetic heater body.
With reference to the accompanying drawing 2,3,4, by specific implementation, the magnetic resonance gyroscope instrument core plenum section that is applied to a set of to the present invention is mentioned
It is described in further detail for the cage of isoperibol without magnetic heater.
As shown in Fig. 2, cage is designed without magnetic heater body using cage fission comprising cage is without magnetic heating cover 1 and cage
Formula forms a cage ball by the installation connection of seam allowance 21 without magnetic heated seats without magnetic heating cover and cage without magnetic heated seats 2, cage
Body structure designs weft direction annular groove 11 for arranging multiple twin heater strip along weft in cage outer surface of spheroid；It is set along warp
Warp direction annular groove 12 is counted out convenient for multiple twin heater strip across wire casing continuous coiling；It is logical that equator cross quadrature position designs two-way
Unthreaded hole 13 and 23；The inserted positioning structure with heater strip and spherical insulation cladding installation connection is separately designed out inside and outside bottom
22.Cage uses the alumina ceramic material with high thermal conductivity coefficient, high temperature resistant, good insulation properties to be made without magnetic heater body.
As shown in figure 3, spherical insulation cladding is using spherical seperated design comprising spherical insulation cover 3 and spherical thermal insulating seat 4,
Spherical insulation cover is connected with spherical thermal insulating seat using seam allowance location structure, and spherical insulation cladding is designed along equator cross quadrature position
Two-way light hole out；The plug-in type with cage without magnetic heater body and the installation connection of other components is separately designed out inside and outside bottom
Installation and positioning structure.Spherical insulation cladding is made of low thermal conductivity, phenoplasts resistant to high temperature.
As shown in figure 4, heater strip includes multiple twin heater strip 5, weft cross-slot line 6 and lead-in wire terminal 7, multiple twin heater strip is multiple
And connected by weft cross-slot line, the lower end of weft cross-slot line connects lead-in wire terminal, and multiple twin heater strip and weft cross-slot line distinguish coiling
In weft direction annular groove and warp direction annular groove of the cage without magnetic heater body, lead-in wire terminal is inserted into cage without magnetic heater body bottom
On the inside of portion in made inserted positioning structure.The multiple twin heater strip, weft cross-slot line and lead-in wire terminal are connected by a twisted pair
It is continuous to be entwined, it may be assumed that required length twisted pair to be got out, through entering first weft slot through wire casing by lead-in wire terminal, around one
After circle, next weft slot is striden into further along weft slot, is then successively all wound.Shape and cage after the heater strip coiling
No magnetic heater body weft direction annular groove and warp direction annular groove match, and it is spherical to form cage type.
Fig. 5 is cage proposed by the present invention without the whole three-dimensional explosive view of magnetic heater, it can be seen that overall construction design letter
Single, process implementing is convenient.
The present invention is that gas chamber temperature is heated to 100 DEG C, then passes through temperature without magnetic heater in gas chamber periphery design cage
Control is by temperature control within the scope of 100 DEG C ± 0.1 DEG C.Cage heater includes two parts: heating part and insulating sections.Heating
Part is cage heater body, is designed using cage fission, part material use with high thermal conductivity coefficient, high temperature resistant, it is good absolutely
Annular groove is designed for arranging heater strip in the alumina ceramic material of edge, part outer surface.Insulating sections are spherical insulation cladding,
Using spherical seperated design, part material uses low thermal conductivity, phenoplasts resistant to high temperature.For wanting for noiseless magnetic field
It asks, using multiple twin heater strip, arranges multiple twin heater strip along part outer surface weft direction annular groove, warp through slot is for being connected to weft
Annular groove generates magnetic field convenient for a multiple twin heater strip in entire cage heater body continuous coiling, heater strip and cancels out each other, right
Gas chamber generates additional interference magnetic field < 0.2nT.It is whole to temperature, to the requirement in magnetic field when meeting gas chamber work using this design
Temperature uniformly keeps the stability of rubidium atomic concentration in gas chamber, and magnetic field is low advantageously ensures that magnetic resonance gyroscope instrument output angle for interference
The stability of speed signal.
Claims (6)
1. a kind of cage for magnetic resonance gyroscope instrument is without magnetic heater, it is characterised in that: including cage without magnetic heater body,
Spherical insulation cladding and heater strip, cage are mounted in spherical insulation cladding without magnetic heater body, and heater strip is inlaid in cage and adds without magnetic
On hot ontology.
2. a kind of cage for magnetic resonance gyroscope instrument according to claim 1 is without magnetic heater, it is characterised in that: institute
The cage stated is designed without magnetic heater body using cage fission comprising cage is without magnetic heating cover and cage without magnetic heated seats, cage
Formula connects to form a cage sphere structure without magnetic heated seats with cage without magnetic heating cover by installing seam allowance, outside cage sphere
Weft direction annular groove is designed for arranging multiple twin heater strip along weft in surface；Go out warp direction annular groove along warp arrangement convenient for double
Heater strip is twisted across wire casing continuous coiling；Equator cross quadrature position designs two-way light hole；It is separately designed inside and outside bottom
The inserted positioning structure connected out with heater strip and spherical insulation cladding installation.
3. a kind of cage for magnetic resonance gyroscope instrument according to claim 1 is without magnetic heater, it is characterised in that: institute
The cage stated uses the alumina ceramic material with high thermal conductivity coefficient, high temperature resistant, good insulation properties to be made without magnetic heater body.
4. a kind of cage for magnetic resonance gyroscope instrument according to claim 1 is without magnetic heater, it is characterised in that: institute
The spherical insulation cladding stated is using spherical seperated design comprising spherical insulation cover and spherical thermal insulating seat, spherical insulation cover and spherical shape
Thermal insulating seat is connected using seam allowance location structure, and spherical insulation cladding is designing two-way light hole along equator cross quadrature position；?
The plug-in type installation and positioning structure with cage without magnetic heater body and the installation connection of other components is separately designed out inside and outside bottom.
5. a kind of cage for magnetic resonance gyroscope instrument according to claim 1 is without magnetic heater, it is characterised in that: institute
The spherical insulation cladding stated is made of low thermal conductivity, phenoplasts resistant to high temperature.
6. a kind of cage for magnetic resonance gyroscope instrument according to claim 1 is without magnetic heater, it is characterised in that: institute
The heater strip stated includes multiple twin heater strip, weft cross-slot line and lead-in wire terminal, and the multiple twin heater strip, weft cross-slot line and lead-in wire terminal are
It is entwined by a twisted pair, multiple twin heater strip is multiple and is connected by weft cross-slot line, the lower end connection of weft cross-slot line
Lead-in wire terminal, multiple twin heater strip and weft cross-slot line are wound on cage without the weft direction annular groove of magnetic heater body and warp side respectively
Into annular groove, lead-in wire terminal is inserted into cage without in the made inserted positioning structure of magnetic heater body bottom inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390735.4A CN109475015B (en) | 2018-11-21 | 2018-11-21 | Cage type non-magnetic heater for nuclear magnetic resonance gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390735.4A CN109475015B (en) | 2018-11-21 | 2018-11-21 | Cage type non-magnetic heater for nuclear magnetic resonance gyroscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109475015A true CN109475015A (en) | 2019-03-15 |
| CN109475015B CN109475015B (en) | 2021-05-07 |
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ID=65674233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811390735.4A Active CN109475015B (en) | 2018-11-21 | 2018-11-21 | Cage type non-magnetic heater for nuclear magnetic resonance gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109475015B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109871051A (en) * | 2019-03-29 | 2019-06-11 | 中国原子能科学研究院 | Temperature control system and temprature control method for atomic air chamber |
| CN110849343A (en) * | 2019-11-12 | 2020-02-28 | 中国船舶重工集团公司第七0七研究所 | Single-laser nuclear magnetic resonance gyroscope |
| CN112985630A (en) * | 2021-02-08 | 2021-06-18 | 北京航空航天大学 | Non-magnetic high-uniformity temperature control structure based on non-contact constant-curvature arc-shaped collet |
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| CN112985630A (en) * | 2021-02-08 | 2021-06-18 | 北京航空航天大学 | Non-magnetic high-uniformity temperature control structure based on non-contact constant-curvature arc-shaped collet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109475015B (en) | 2021-05-07 |
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