CN103415196A - Small-sized atom magnetic shielding and magnetic control device - Google Patents
Small-sized atom magnetic shielding and magnetic control device Download PDFInfo
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- CN103415196A CN103415196A CN2013103417905A CN201310341790A CN103415196A CN 103415196 A CN103415196 A CN 103415196A CN 2013103417905 A CN2013103417905 A CN 2013103417905A CN 201310341790 A CN201310341790 A CN 201310341790A CN 103415196 A CN103415196 A CN 103415196A
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Abstract
A small-sized atom magnetic shielding and magnetic control device comprises an inner shielding shell layer, a middle shielding shell layer, an outer shielding shell layer, a heat insulation shell layer and a magnetic control layer, wherein a heating coil is wound around the outer surface of the inner shielding shell layer in a double-wire opposite wrapping mode, the heat insulation shell layer is arranged between the inner shielding shell layer and the middle shielding shell layer, the magnetic control layer is arranged inside the inner shielding shell layer, and a pair of wires is arranged in each of three orthogonal directions of the magnetic control layer in a winding mode. The total volume of the device is smaller than 500 cm<3> (482.33cm<3>, the diameter is 8.5cm*8.5cm). According to the small-sized atom magnetic shielding and magnetic control device, the external magnetic field is weakened through the inner shielding shell layer, the middle shielding shell layer and the outer shielding shell layer, and then magnetic shielding of an alkali metal atom device is achieved; the temperature condition of the alkali metal atom device is kept through heating of the heating coil after the heat coil is powered on and heat insulation of the heat insulation shell layer; magnetic control of the interior of the inner shielding shell layer is achieved by adjusting the current of the wires in the three orthogonal directions of the magnetic control layer. The small-sized atom magnetic shielding and magnetic control device has the advantages of being small in size and easy to machine and obtain. The small-sized atom magnetic shielding and magnetic control device is suitable for an atomic clock, an atom magnetometer and an atom gyroscope.
Description
Technical field
The present invention designs magnetic field shielding and field is controlled in magnetic field, more specifically, relates to a kind of nonmagnetic atom of miniaturization for alkali metal atom device shielding and magnetic actuation means.Can be used for atom magnetometer, atomic clock and atomic gyroscope.
Background technology
The atom device is that it mainly contains atomic clock, atomic gyroscope, atom magnetometer etc. by the alkali metal atom Spin precession being measured to the new sensor of respective physical amount.Along with the development of micro-electromechanical technology and minute manufacturing technology, the atom device is constantly to integrated, and miniaturization develops.
Atomic spin is subject to external magnetic field and disturbs, downfield environment that will be stable during the work of atom device.So effective shielding in magnetic field is to guarantee that the atom device is stable to external world, accurately one of key technology of work.Miniaturization development along with the atom device, also produced the demand of miniaturization to the magnetic field shielding device of atom device.
The small-sized magnetic field shielding device of the John Kitching of National Institute of Standards and Technology design only simple use a kind of shielding material, and at design apparatus, do not have the magnetic operating-controlling mechanism of the required heating arrangement of integrated atom device and three directions.
High-permeability material shielding shell is decayed in magnetic field to external world, thereby reduces the magnetic field size of its internal cavities, realizes the magnetic field shielding purpose.According to the magnetic field shielding theory, to the shielding properties in magnetic field, restricted by the electromagnetic attributes of shielding material, the material magnetic field shielding performance that magnetic permeability is larger is better; The pyromagnetic noise that the material that resistivity is high produces is less.The material that initial permeability is large is good to the shield effectiveness of low-intensity magnetic field.The material that saturation induction intensity is large can still keep shield effectiveness preferably under stronger magnetic field.The screening arrangement that homogenous material forms can not meet the effectively all requirements of shielding and low-heat magnetic noise on a large scale to magnetic field shielding.
Summary of the invention
The technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of magnetic screen for small-sized atom device and magnetic actuation means are provided, nested to realize the small-sized atom device shielding requirements in magnetic field to external world by using multiple different shielding material to meet, simultaneously integrated adiabatic shell and the heater coil of atom device.
Technical scheme of the present invention is as follows: a kind of small-sized nonmagnetic atom shielding and magnetic actuation means, it is characterized in that comprising: inner shield shell 1, middle shielding shell 2, external shield shell 3, adiabatic shell 4 and magnetic are controlled layer 5, the inlaid-assembling from inside to outside of inner shield shell 1, middle shielding shell 2 and external shield shell 3 is in the same place, adiabatic shell 4 is placed between inner shield shell 1 and shielding shell 2, and magnetic is controlled layer 5 and is placed in inner shield shell 1; At magnetic, control on layer 5 and be tied with respectively couple of conductor 6 along three orthogonal directions, at inner shield shell 1 outer surface, be tied with the heater coil 7 of double wrap line opposing connection; The shape of described inner shield shell 1, middle shielding shell 2, external shield shell 3 and adiabatic shell 4 is cylindrical shape, comprises respectively two parts of cylindrical shell and cover.
Described inner shield shell 1 is made by MnZn ferrite material.
Described middle shielding shell 2 is made by permalloy.
Described external shield shell 3 is made by the amorphous composite material material.
Described adiabatic shell 4 is made by phenolic plastics.
Described magnetic is controlled three orthogonal directions on layer 5 and is had a pair of wide groove of 3mm that is, wire 6 is wrapped in magnetic along groove and controls on layer 5.
Described magnetic is controlled layer 5 internal cavities and is designed to the lockhole type, and the Pt100 temperature sensor probe is fixed in to cavity inside.
Described inner shield shell 1 has the through hole that diameter is 2.5mm at the cylinder body bottom edge, control layer 56 wire and pass through for being placed in its inner magnetic.
Described middle shielding shell 2 and external shield shell 3, have the through hole that diameter is 2.8mm at the cylinder body bottom edge, its inner magnetic is controlled 6 wires of layer 5 and 2 wires of inner shield shell 1 pass through for being placed in.
Described inner shield shell 1, middle shielding shell 2, external shield shell 3 and adiabatic shell 4 have at its cover and 3.5mm place, cylindrical shell Shang Juqi center the concentric pylone that diameter is 5mm.
The present invention's advantage compared with prior art is:
(1) the present invention is nested to realize the small-sized atom device shielding requirements in magnetic field to external world by using multiple different shielding material to meet, simultaneously integrated adiabatic shell and the heater coil of atom device.
(2) to have a volume little in the present invention, is easy to process the characteristics of realization.Applicable to atomic clock, atom magnetometer and atomic gyroscope.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the inner shield shell structurre schematic diagram in the present invention;
Fig. 3 is the middle shielding shell structural representation in the present invention; Left figure is the shell portion of middle level shielding shell, and right figure is the cover part of middle level shielding shell.
Fig. 4 is that magnetic of the present invention is controlled a layer structural representation.
Embodiment
As shown in Figure 1, miniaturization nonmagnetic atom shielding of the present invention and magnetic actuation means comprise: inner shield shell 1, and inner shield shell outer surface is tied with the heater coil 7 of double wrap line opposing connection; Middle shielding shell 2; External shield shell 3; Adiabatic shell 4; Magnetic is controlled layer 5, and magnetic is controlled layer and above along three orthogonal directions, is tied with respectively couple of conductor 6.
As shown in Figure 2, inner shield shell 1 is made by MnZn ferrite material, is shaped as cylindrical shape, is comprised of cylindrical shell and two parts of cover, and the cylindrical shell interior diameter is 34mm, and external diameter is 44mm, tube length 47mm.At the cylindrical shell two ends, be designed with the edge endless belt 11 of high 1.5mm.
As shown in Figure 3, middle shielding shell 2 is made by permalloy, is shaped as cylindrical shape, is comprised of cylindrical shell and two parts of cover.The cylindrical shell interior diameter is 54mm, and external diameter is 75mm, tube length 76mm.Cover is designed to the step design of the different round platform of three diameters, base frame diameter 75mm, high 6mm; Middle diameter 65mm, high 5mm; Base frame diameter 54mm, high 5mm.
Magnetic is controlled three orthogonal directions on layer 5 and is had a pair of wide groove of 3mm that is, wire 6 is wrapped in magnetic along groove and controls on layer.
Magnetic is controlled layer 5 internal cavities and is designed to lockhole type 51, as Fig. 4.Pt100 temperature sensor probe 52 is fixed in cavity inside.
The nested order from inside to outside of inner shield shell 1, middle shielding shell 2 and external shield shell 3 that three kinds of different materials are made.
Magnetic is controlled layer 5 and is placed in the inner shield shell.
After this device assembling, volume is less than 500cm
3482.33cm
3, Ф 8.5cm * 8.5cm.
Non-elaborated part of the present invention belongs to techniques well known.
Although disclose for the purpose of illustration most preferred embodiment of the present invention and accompanying drawing, it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various replacements, variation and modification are all possible.Therefore, the present invention should not be limited to most preferred embodiment and the disclosed content of accompanying drawing.
Claims (10)
1. a small-sized nonmagnetic atom shields and the magnetic actuation means, it is characterized in that comprising: inner shield shell (1), middle shielding shell (2), external shield shell (3), adiabatic shell (4) and magnetic are controlled layer (5), the inlaid-assembling from inside to outside of inner shield shell (1), middle shielding shell (2) and external shield shell (3) together, adiabatic shell (4) is placed between inner shield shell (1) and shielding shell (2), and magnetic is controlled layer (5) and is placed in inner shield shell (1); At magnetic, control layer (5) and above along three orthogonal directions, be tied with respectively couple of conductor (6), at inner shield shell (1) outer surface, be tied with the heater coil (7) of double wrap line opposing connection; The shape of described inner shield shell (1), middle shielding shell (2), external shield shell (3) and adiabatic shell (4) is cylindrical shape, comprises respectively two parts of cylindrical shell and cover.
2. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described inner shield shell (1) is made by MnZn ferrite material.
3. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described middle shielding shell (2) is made by permalloy.
4. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described external shield shell (3) is made by the amorphous composite material material.
5. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described adiabatic shell (4) is made by phenolic plastics.
6. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described magnetic is controlled layer (5) upper three orthogonal direction and is had a pair of wide groove of 3mm that is, wire (6) is wrapped in magnetic along groove and controls on layer (5).
7. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described magnetic is controlled layer (5) internal cavities and is designed to the lockhole type, and the Pt100 temperature sensor probe is fixed in to cavity inside.
8. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described inner shield shell (1) has the through hole that diameter is 2.5mm at the cylinder body bottom edge, for be placed in its inner magnetic control the layer (5) 6 wires pass through.
9. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described middle shielding shell (2) and external shield shell (3), at the cylinder body bottom edge, have the through hole that diameter is 2.8mm, its inner magnetic is controlled 6 wires of layer (5) and 2 wires of inner shield shell (1) pass through for being placed in.
10. a kind of small-sized nonmagnetic atom shielding according to claim 1 and magnetic actuation means, it is characterized in that: described inner shield shell (1), middle shielding shell (2), external shield shell (3) and adiabatic shell (4) have at its cover and 3.5mm place, cylindrical shell Shang Juqi center the concentric pylone that diameter is 5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310341790.5A CN103415196B (en) | 2013-08-07 | 2013-08-07 | A kind of small-sized nonmagnetic atom shielding and magnetic actuation means |
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| CN201310341790.5A CN103415196B (en) | 2013-08-07 | 2013-08-07 | A kind of small-sized nonmagnetic atom shielding and magnetic actuation means |
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| CN103415196A true CN103415196A (en) | 2013-11-27 |
| CN103415196B CN103415196B (en) | 2016-06-22 |
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| CN201310341790.5A Expired - Fee Related CN103415196B (en) | 2013-08-07 | 2013-08-07 | A kind of small-sized nonmagnetic atom shielding and magnetic actuation means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263197A (en) * | 2015-08-31 | 2016-01-20 | 北京航天控制仪器研究所 | Uniform non-magnet heating device for nuclear magnetic resonance gyroscope |
| CN108896945A (en) * | 2018-06-19 | 2018-11-27 | 山东航天电子技术研究所 | A kind of sensitivity index scaling method of high-sensitivity atomic magnetometer |
| CN112786324A (en) * | 2021-01-29 | 2021-05-11 | 北京双杰电气股份有限公司 | Low-voltage direct-current circuit breaker arc extinguish chamber and circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101860A (en) * | 1985-04-01 | 1987-01-10 | N·V·菲利浦光灯制造公司 | Nuclear magnetic resonance analyser |
| CN1056380A (en) * | 1990-05-04 | 1991-11-20 | 北京有色金属研究总院 | Quantum interferometer of cylindrical superconducting thick-film |
| JPH05308199A (en) * | 1991-03-27 | 1993-11-19 | Furukawa Electric Co Ltd:The | Formation method of low magnetic field using superconductor |
| CN101166411A (en) * | 2006-10-18 | 2008-04-23 | 中国科学院高能物理研究所 | A magnetic shielding device with multi-layer compound structure for shielding strong magnetic field |
-
2013
- 2013-08-07 CN CN201310341790.5A patent/CN103415196B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101860A (en) * | 1985-04-01 | 1987-01-10 | N·V·菲利浦光灯制造公司 | Nuclear magnetic resonance analyser |
| CN1056380A (en) * | 1990-05-04 | 1991-11-20 | 北京有色金属研究总院 | Quantum interferometer of cylindrical superconducting thick-film |
| JPH05308199A (en) * | 1991-03-27 | 1993-11-19 | Furukawa Electric Co Ltd:The | Formation method of low magnetic field using superconductor |
| CN101166411A (en) * | 2006-10-18 | 2008-04-23 | 中国科学院高能物理研究所 | A magnetic shielding device with multi-layer compound structure for shielding strong magnetic field |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263197A (en) * | 2015-08-31 | 2016-01-20 | 北京航天控制仪器研究所 | Uniform non-magnet heating device for nuclear magnetic resonance gyroscope |
| CN105263197B (en) * | 2015-08-31 | 2018-02-06 | 北京航天控制仪器研究所 | A kind of uniform no magnet heater for magnetic resonance gyroscope instrument |
| CN108896945A (en) * | 2018-06-19 | 2018-11-27 | 山东航天电子技术研究所 | A kind of sensitivity index scaling method of high-sensitivity atomic magnetometer |
| CN112786324A (en) * | 2021-01-29 | 2021-05-11 | 北京双杰电气股份有限公司 | Low-voltage direct-current circuit breaker arc extinguish chamber and circuit breaker |
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| Publication number | Publication date |
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| CN103415196B (en) | 2016-06-22 |
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Granted publication date: 20160622 Termination date: 20170807 |