CN104457729A - Nuclear magnetic resonance gyroscope sensitivity detection unit and manufacturing method thereof - Google Patents
Nuclear magnetic resonance gyroscope sensitivity detection unit and manufacturing method thereof Download PDFInfo
- Publication number
- CN104457729A CN104457729A CN201410850404.XA CN201410850404A CN104457729A CN 104457729 A CN104457729 A CN 104457729A CN 201410850404 A CN201410850404 A CN 201410850404A CN 104457729 A CN104457729 A CN 104457729A
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- magnetic resonance
- air chamber
- detection unit
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Manufacturing & Machinery (AREA)
- Gyroscopes (AREA)
Abstract
The invention relates to a nuclear magnetic resonance gyroscope sensitivity detection unit and a manufacturing method of the nuclear magnetic resonance gyroscope sensitivity detection unit and belongs to the field of atom sensors. The nuclear magnetic resonance gyroscope sensitivity detection unit aims to solve the problems that an existing sensitivity detection unit is low in accuracy and can not meet the requirements of a nuclear magnetic resonance gyroscope. According to the nuclear magnetic resonance gyroscope sensitivity detection unit and the manufacturing method of the nuclear magnetic resonance gyroscope sensitivity detection unit, the main structure is completed by means of the 3D printing technology, and the positions of all elements are directly limited; lasers emitted by a VCSEL laser device are polarized through a polarizer, collimated through a small-focal-length collimation lens and then emitted into a nuclear magnetic resonance air chamber after the polarization state is adjusted through a 1/4 wave plate; alkali metal atoms and inert gas atoms in an atom air chamber are pumped into an excited state through pump light first, and then the emitted light of the nuclear magnetic resonance air chamber is emitted to the photosensitive surface of a photoelectric detector to complete detection of nuclear magnetic resonance signals. The nuclear magnetic resonance gyroscope sensitivity detection unit and the manufacturing method of the nuclear magnetic resonance gyroscope sensitivity detection unit are suitable for development of a micro-structure nuclear magnetic resonance gyroscope system.
Description
Technical field
The invention belongs to atomic sensor field.
Background technology
Nuclear magnetic resonance atomic gyroscope is the sensor utilizing the nmr frequency change of atom to carry out detection angles change, sensitive detection unit is wherein whole gyrostatic core component, its stability and precision determine the accuracy of detection of the overall nuclear magnetic resonance atomic gyroscope of system, but existing sensitive detection unit precision is low, power consumption is large, volume is large, the requirement of magnetic resonance gyroscope instrument can not be met, therefore, how to design a kind of high precision, low-power consumption, small size sensitive detection unit become the key manufacturing magnetic resonance gyroscope instrument.
Summary of the invention
The present invention is low in order to solve existing sensitive detection unit precision, can not meet the problem of magnetic resonance gyroscope instrument requirement, now provide the manufacture method of magnetic resonance gyroscope instrument sensitive detection unit and this unit.
Magnetic resonance gyroscope instrument sensitive detection unit, it comprises: VCSEL laser instrument, the polarizer, collimation lens, quarter wave plate, nuclear magnetic resonance air chamber, photodetector and support;
Support comprises: fixture below fixture, air chamber above column, base, laser instrument draw-in groove, polarizer draw-in groove, collimation lens draw-in groove, quarter wave plate draw-in groove, air chamber;
Uprights vertical is fixed on base, base has photodetector light hole, above laser instrument draw-in groove, polarizer draw-in groove, collimation lens draw-in groove, quarter wave plate draw-in groove, air chamber, below fixture and air chamber, fixture is fixed on column from top to bottom successively, and above laser instrument draw-in groove, polarizer draw-in groove, collimation lens draw-in groove, quarter wave plate draw-in groove, air chamber below fixture, air chamber fixture and photodetector light hole coaxial;
Above air chamber, below fixture and air chamber, the outside surface of fixture is respectively equipped with magnetic field line ring recess and lower magnetic field line ring recess, and being wound with field coil and lower field coil respectively in upper magnetic field line ring recess and lower magnetic field line ring recess, above air chamber, below fixture and air chamber, fixture inside is respectively equipped with heating plate and lower heating plate;
VCSEL laser instrument is arranged in laser instrument draw-in groove, the polarizer is arranged in polarizer draw-in groove, collimation lens draw-in groove is arranged in collimation lens draw-in groove, quarter wave plate draw-in groove is arranged in quarter wave plate draw-in groove, nuclear magnetic resonance air chamber is above air chamber below fixture, air chamber between fixture, photodetector is positioned at below base, and the sensitive chip of photodetector is positioned at the center of photodetector light hole.
The manufacture method of above-mentioned magnetic resonance gyroscope instrument sensitive detection unit is as follows:
First 3D printing technique is adopted support entirety to be printed, then respectively VCSEL laser instrument, the polarizer, collimation lens, quarter wave plate, nuclear magnetic resonance air chamber and photodetector are embedded in corresponding draw-in groove respectively, finally obtain magnetic resonance gyroscope instrument sensitive detection unit.
The manufacture method of magnetic resonance gyroscope instrument sensitive detection unit of the present invention and this unit, agent structure has been printed by 3D printing technique, structure-integrated degree is high, directly define the position of each element, be convenient to assembling, conserve space, avoids the error brought in assembling process, improves the precision of magnetic resonance gyroscope instrument sensitive detection unit; Meanwhile, the light channel structure framework that high precision 3D prints makes the stability of layout of magnetic resonance gyroscope instrument sensitive detection unit higher than the light path system after being assembled separately by each several part element, improves the overall precision of system; Heating plate and field coil can realize accurate temperature controller to atom in air chamber and magnetic control; If adopt different types of atomic air chamber can realize the atomic sensor of several functions in addition in this configuration.Invention achieves the object of Stability Analysis of Structures, dependable performance, the requirement of high precision magnetic resonance gyroscope instrument can be met, there is very high practical value, be applicable to development microstructure magnetic resonance gyroscope instrument system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the support of magnetic resonance gyroscope instrument sensitive detection unit of the present invention;
Fig. 2 is the one-piece construction schematic diagram that magnetic resonance gyroscope instrument sensitive detection unit of the present invention is assemblied on support.
Embodiment
Embodiment one: see figures.1.and.2 and illustrate present embodiment, magnetic resonance gyroscope instrument sensitive detection unit described in present embodiment, it comprises: VCSEL laser instrument 13, the polarizer 14, collimation lens 15, quarter wave plate 16, nuclear magnetic resonance air chamber 19, photodetector 21 and support;
Support comprises: fixture 6 below fixture 5, air chamber above column 22, base 23, laser instrument draw-in groove 1, polarizer draw-in groove 2, collimation lens draw-in groove 3, quarter wave plate draw-in groove 4, air chamber;
Column 22 is vertically fixed on base 23, base 23 has photodetector light hole 9, above laser instrument draw-in groove 1, polarizer draw-in groove 2, collimation lens draw-in groove 3, quarter wave plate draw-in groove 4, air chamber, below fixture 5 and air chamber, fixture 6 is fixed on column 22 from top to bottom successively, and above laser instrument draw-in groove 1, polarizer draw-in groove 2, collimation lens draw-in groove 3, quarter wave plate draw-in groove 4, air chamber below fixture 5, air chamber fixture 6 and photodetector light hole 9 coaxial;
Above air chamber, below fixture 5 and air chamber, the outside surface of fixture 6 is respectively equipped with magnetic field line ring recess 7 and lower magnetic field line ring recess 8, and being wound with field coil 17 and lower field coil 18 respectively in upper magnetic field line ring recess 7 and lower magnetic field line ring recess 8, above air chamber, below fixture 5 and air chamber, fixture 6 inside is respectively equipped with heating plate 11 and lower heating plate 12;
VCSEL laser instrument 13 is arranged in laser instrument draw-in groove 1, the polarizer 14 is arranged in polarizer draw-in groove 2, collimation lens draw-in groove 3 is arranged in collimation lens draw-in groove 3, quarter wave plate draw-in groove 4 is arranged in quarter wave plate draw-in groove 4, nuclear magnetic resonance air chamber 19 is above air chamber below fixture 5, air chamber between fixture 6, photodetector 21 is positioned at below base 23, and the sensitive chip of photodetector 21 is positioned at the center of photodetector light hole 9.
In present embodiment, the laser that VCSEL laser instrument 13 sends is transmitted through in nuclear magnetic resonance air chamber 19 through the polarizer 14, collimation lens 15 and quarter wave plate 16 successively, and the emergent light of nuclear magnetic resonance air chamber 19 is incident on the photosurface of photodetector 21.
Principle: the laser that VCSEL laser instrument 13 sends is inclined through the polarizer 14, then collimate through little focal length collimation lens 15, adjusting after polarization state through quarter wave plate 16 injects in nuclear magnetic resonance air chamber 19 again, alkali metal atom in atomic air chamber 19 and intert-gas atoms first by pump light pumping to excited state, the photosurface of the emergent light directive photodetector 21 of nuclear magnetic resonance air chamber 19, completes the detection of NMR signal.When gyroscope system generation angle changes, detector signal generation respective change thus realize to angle change measurement.
Upper heating plate 11 and lower heating plate 12 can control the temperature of air chamber; Upper field coil 17 and lower field coil 18 can control the steady magnetic field at air chamber place.The center of all draw-in grooves and fixture all on the same axis, can ensure that the light path that each device installs rear total system is along same axis, to realize the measurement of magnetic resonance gyroscope signal.Upper field coil 17 and lower field coil 18 are fine enamelled wire.
Embodiment two: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, support is integral type structure.
Embodiment three: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, the material of support is photosensitive resin.
Embodiment four: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, the shape of nuclear magnetic resonance air chamber 19 is spheroid or right cylinder.
Embodiment five: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, in present embodiment, above air chamber, fixture 5 is identical with the structure of fixture below air chamber 6, above air chamber, fixture 5 is opening annulus, the two ends of the opening part of this annulus are equipped with bolt hole 10, and this bolt hole 10 can change the diameter of annulus by bolt 20.
Above air chamber described in present embodiment, fixture 6 below fixture 5 and air chamber, namely carrys out the diameter of alignment jig annulus by bolt 20, and carries the nuclear magnetic resonance air chamber of various model by changing circle diameter.Described nuclear magnetic resonance air chamber 19 is above air chamber below fixture 5 and air chamber between fixture 6, and after air chamber places, the bolt 20 tighted a bolt in hole 10, is fixedly clamped air chamber.
Embodiment six: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, nuclear magnetic resonance air chamber 19 is glass air chamber.
Embodiment seven: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, the wave band of VCSEL laser instrument 13 is 794.9nm.
Embodiment eight: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, the polarizer 14 is the infrared polarization sheet of 794.9nm wave band.
Embodiment nine: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, in present embodiment, quarter wave plate 16 can 360 ° of rotations in polarizer draw-in groove 2.
Embodiment ten: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, upper heating plate 11 and lower heating plate 12 are ITO heating film.
Embodiment 11: present embodiment is described further the magnetic resonance gyroscope instrument sensitive detection unit described in embodiment one, and in present embodiment, photodetector 21 is 794.9nm band detector.
Embodiment 12: the manufacture method of the magnetic resonance gyroscope instrument sensitive detection unit described in present embodiment is as follows:
First 3D printing technique is adopted support entirety to be printed, then respectively VCSEL laser instrument 13, the polarizer 14, collimation lens 15, quarter wave plate 16, nuclear magnetic resonance air chamber 19 and photodetector 21 are embedded in corresponding draw-in groove respectively, finally obtain magnetic resonance gyroscope instrument sensitive detection unit.
The manufacture method one-piece construction unit of the magnetic resonance gyroscope instrument sensitive detection unit described in present embodiment is completed by 3D printing and making, can realize the quick assembling of required device.Structure-integrated degree is high, overcomes the problem that the inconvenience of each minor structure parts is installed, avoids the error of assembling and bringing.
Claims (10)
1. magnetic resonance gyroscope instrument sensitive detection unit, it is characterized in that, it comprises: VCSEL laser instrument (13), the polarizer (14), collimation lens (15), quarter wave plate (16), nuclear magnetic resonance air chamber (19), photodetector (21) and support;
Support comprises: fixture (6) below fixture (5), air chamber above column (22), base (23), laser instrument draw-in groove (1), polarizer draw-in groove (2), collimation lens draw-in groove (3), quarter wave plate draw-in groove (4), air chamber;
Column (22) is vertically fixed on base (23), base (23) has photodetector light hole (9), laser instrument draw-in groove (1), polarizer draw-in groove (2), collimation lens draw-in groove (3), quarter wave plate draw-in groove (4), above air chamber, below fixture (5) and air chamber, fixture (6) is fixed on column (22) from top to bottom successively, and laser instrument draw-in groove (1), polarizer draw-in groove (2), collimation lens draw-in groove (3), quarter wave plate draw-in groove (4), fixture (5) above air chamber, below air chamber, fixture (6) and photodetector light hole (9) are coaxially,
Above air chamber, below fixture (5) and air chamber, the outside surface of fixture (6) is respectively equipped with magnetic field line ring recess (7) and lower magnetic field line ring recess (8), and being wound with field coil (17) and lower field coil (18) respectively in upper magnetic field line ring recess (7) and lower magnetic field line ring recess (8), above air chamber, below fixture (5) and air chamber, fixture (6) inside is respectively equipped with heating plate (11) and lower heating plate (12);
VCSEL laser instrument (13) is arranged in laser instrument draw-in groove (1), the polarizer (14) is arranged in polarizer draw-in groove (2), collimation lens draw-in groove (3) is arranged in collimation lens draw-in groove (3), quarter wave plate draw-in groove (4) is arranged in quarter wave plate draw-in groove (4), nuclear magnetic resonance air chamber (19) is positioned at fixture above air chamber (5), below air chamber between fixture (6), photodetector (21) is positioned at base (23) below, and the sensitive chip of photodetector (21) is positioned at the center of photodetector light hole (9).
2. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, support is integral type structure.
3. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, the material of support is photosensitive resin.
4. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, the shape of nuclear magnetic resonance air chamber (19) is spheroid or right cylinder.
5. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, it is characterized in that, above air chamber, fixture (5) is identical with the structure of fixture below air chamber (6), above air chamber, fixture (5) is opening annulus, the two ends of the opening part of this annulus are equipped with bolt hole (10), and this bolt hole (10) can pass through the diameter that bolt (20) changes annulus.
6. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, nuclear magnetic resonance air chamber (19) is glass air chamber.
7. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, the wave band of VCSEL laser instrument (13) is 794.9nm.
8. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, the infrared polarization sheet that the polarizer (14) is 794.9nm wave band.
9. magnetic resonance gyroscope instrument sensitive detection unit according to claim 1, is characterized in that, photodetector (21) is 794.9nm band detector.
10. the manufacture method of magnetic resonance gyroscope instrument sensitive detection unit, is characterized in that, this method method is as follows:
First 3D printing technique is adopted support entirety to be printed, then respectively VCSEL laser instrument (13), the polarizer (14), collimation lens (15), quarter wave plate (16), nuclear magnetic resonance air chamber (19) and photodetector (21) are embedded in corresponding draw-in groove respectively, finally obtain magnetic resonance gyroscope instrument sensitive detection unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850404.XA CN104457729B (en) | 2014-12-31 | 2014-12-31 | Magnetic resonance gyroscope instrument sensitive detection unit and the manufacture method of the unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850404.XA CN104457729B (en) | 2014-12-31 | 2014-12-31 | Magnetic resonance gyroscope instrument sensitive detection unit and the manufacture method of the unit |
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| CN104457729A true CN104457729A (en) | 2015-03-25 |
| CN104457729B CN104457729B (en) | 2017-03-08 |
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| CN201410850404.XA Expired - Fee Related CN104457729B (en) | 2014-12-31 | 2014-12-31 | Magnetic resonance gyroscope instrument sensitive detection unit and the manufacture method of the unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108474660A (en) * | 2015-11-27 | 2018-08-31 | 塔莱斯公司 | The sensor of the cold atom that trap is set on chip of rotary speed can be measured |
| CN112180302A (en) * | 2020-09-28 | 2021-01-05 | 中国电子科技集团公司第四十九研究所 | Atomic magnetometer probe based on optical virtual magnetic field technology |
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2014
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474660A (en) * | 2015-11-27 | 2018-08-31 | 塔莱斯公司 | The sensor of the cold atom that trap is set on chip of rotary speed can be measured |
| CN108474660B (en) * | 2015-11-27 | 2022-04-01 | 塔莱斯公司 | Sensor for cold atoms trapped on a chip capable of measuring the rotation speed |
| CN112180302A (en) * | 2020-09-28 | 2021-01-05 | 中国电子科技集团公司第四十九研究所 | Atomic magnetometer probe based on optical virtual magnetic field technology |
| CN112180302B (en) * | 2020-09-28 | 2023-04-11 | 中国电子科技集团公司第四十九研究所 | Atomic magnetometer probe based on optical virtual magnetic field technology |
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| CN104457729B (en) | 2017-03-08 |
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Effective date of registration: 20170314 Address after: 150001 Nantong street, Nangang District, Heilongjiang, No. 145, No. Patentee after: Harbin Engineering Univ. Patentee after: The 49th Research Institute of CECT Address before: Nangang District of Heilongjiang city in Harbin province 150001 Yiman Street No. 29 Patentee before: The 49th Research Institute of CECT |
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Granted publication date: 20170308 Termination date: 20171231 |