CN110212918A - A kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking - Google Patents
A kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking Download PDFInfo
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- CN110212918A CN110212918A CN201910553795.1A CN201910553795A CN110212918A CN 110212918 A CN110212918 A CN 110212918A CN 201910553795 A CN201910553795 A CN 201910553795A CN 110212918 A CN110212918 A CN 110212918A
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- Prior art keywords
- temperature control
- bottom plate
- magnetic
- magnetic cup
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052701 rubidium Inorganic materials 0.000 title abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000741 silica gel Substances 0.000 claims abstract description 3
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 2
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract description 27
- 239000000306 component Substances 0.000 abstract description 10
- 239000008358 core component Substances 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000005283 ground state Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The invention discloses a kind of temperature control for Rb atom frequency marking and magnetic cup device, outer magnetic cup bottom plate is mounted on temperature control plate upper surface, and magnetic cup housing is on temperature control bottom plate and is fixed on temperature control bottom panel side；Film is heated with silica gel solid due under outer temperature control bottom plate；Thermistor is embedded in the hole of outer temperature control bottom plate；The lead of heating film and thermistor is connected with temperature control circuit；Heat outlet washer is mounted between outer temperature control bottom plate and complete machine bottom plate with screw；Temperature control circuit is mountable on temperature control bottom plate.Device design can be in the case where guaranteeing that core component effectively radiates, stable environment temperature, excellent Magnetic Shielding Effectiveness are provided for the physical system and sensitive circuit component of rubidium frequency standard, further to overcome the temperature sensitivity and magnetic susceptibility of rubidium frequency standard, and firm installation various components, the requirement of antidetonation is reached, the long-term stability that may finally be obviously improved Rb atom frequency marking is horizontal.
Description
Technical field
The invention belongs to Technology of Atomic Frequency Standards field, it is more particularly to a kind of Rb atom frequency marking outer layer temperature control and magnetic screen dress
It sets, is designed suitable for the atomic frequency standard of Multiple Type and structure, be particularly suitable for Rb atom frequency marking (rubidium atomic clock).
Background technique
Rb atom frequency marking is a kind of important time reference device, mainly by the physical system and circuit as frequency discriminator
System composition.Physical system is mainly made of spectrum lamp and cavity bubble system, wherein Rb atom frequency marking operation material metal87Rb is in chamber
In the absorption bubble of bubble system,87Rb atomic ground state (0,0) jump frequency is the frequency reference of Rb atom frequency marking.Circuit system master
Will include microwave link and servo circuit, microwave action be to Voltage Controlled Crystal Oscillator (abbreviation crystal oscillator) export 10MHz signal into
Line frequency synthesis, generate one and87The very close microwave signal of Rb atomic ground state (0,0) jump frequency, with atomic transition frequency
Rate relatively after, export a control voltage, to control the output frequency of crystal oscillator, finally make microwave signal frequency and atomic transition frequency
Rate is equal.To which the stability of atomic transition frequency is passed to crystal oscillator, frequency marking is realized.
In this system, rubidium light bulb, rubidium absorption bubble, rubidium filtering blobs and microwave circuit are all very quick to temperature change
Sense, their temperature change can directly cause the output frequency of Rb atom frequency marking to change, deteriorate its core index --- and frequency is steady
Fixed degree.And these components itself are exactly heat source in normal work, consideration and while being thermally isolated of ambient temperature, and it must
The heat dissipation problem of heat source need be taken into account；On the other hand, the rubidium atomic energy level in rubidium absorption bubble is very quick to the magnetic field in locating region
Sense, the fluctuation in magnetic field can directly cause the output frequency of Rb atom frequency marking to change, it is therefore necessary to reinforce Magnetic Shielding Effectiveness；Finally,
The firm installation and Aseismic Design of above-mentioned several components are also abnormal important, especially in spaceborne bomb-borne application field.Therefore, how
In each core component of firm installation and in the case where guarantee that core component effectively radiates, the environment temperature of its work of stability contorting
Degree, the influence for reducing external magnetic field is the key that overall design, can greatly promote the long-term stability water of Rb atom frequency marking
It is flat.Rb atom frequency marking outer layer temperature control of the present invention and magnetic shielding device can be with effective solution these problems.
In traditional general civilian Rb atom frequency marking, without outer layer magnetic screen and structure of controlling temperature, temperature coefficient is big, vulnerable to
External magnetic field influences, and index is low.The outer layer magnetic screen and temperature control system that a kind of Rb atom frequency marking is not found through retrieval be disclosed or
It uses.
Summary of the invention
It is to be the provision of one kind for rubidium original the purpose of the present invention is being in view of the above-mentioned problems existing in the prior art
The outer layer temperature control and magnetic screen of sub- frequency marking fill, and device design can be rubidium in the case where guaranteeing that core component effectively radiates
The physical system and sensitive circuit component of frequency marking provide stable environment temperature, excellent Magnetic Shielding Effectiveness, further to overcome
The temperature sensitivity and magnetic susceptibility of rubidium frequency standard, and firm installation various components, have reached the requirement of antidetonation, may finally be significant
The long-term stability for improving Rb atom frequency marking it is horizontal.
To achieve the above object, the present invention uses following technical measures:
A kind of outer layer temperature control and magnetic screen for Rb atom frequency marking fills, it by temperature control bottom plate, magnetic cup bottom plate, magnetic cup lid,
Complete machine bottom plate, heat outlet washer, heating film, thermistor, temperature control circuit composition；It is characterized by: outer magnetic cup bottom plate is mounted on
Temperature control plate upper surface, magnetic cup housing is on temperature control bottom plate and is fixed on temperature control bottom panel side；Heating film silica gel (can be on-demand
Ask any in market purchase) it is fixed on outer temperature control lower surface of base plate；Thermistor is embedded in the hole of outer temperature control bottom plate；It heats thin
The lead of film and thermistor is connected with temperature control circuit；Heat outlet washer with screw be mounted on outer temperature control bottom plate and complete machine bottom plate it
Between；Temperature control circuit is mountable on temperature control bottom plate, or is mounted on complete machine bottom plate.
The magnetic cup bottom plate 2 and magnetic cup lid 3 constitute a closed magnetic screen metal case.
Pass through abovementioned technology: the present invention can be directly used for Rb atom frequency marking, for improving the temperature sensitivity of rubidium frequency standard
Property and magnetic susceptibility, so as to improve the frequency stability index of rubidium frequency standard；It may further be used to the mechanical structure of enhancing rubidium frequency standard, reduce
The operating temperature of component reduces space radiation and damages to component, improves the reliability and use environment adaptability of rubidium frequency standard.
Physical system and core circuit are closely crimped on the temperature control bottom plate of metal material production by screw, so its work
As when the heat that generates can quickly introduce temperature control bottom plate, then complete machine bottom plate is transmitted to from temperature control bottom plate by heat outlet washer, dissipated
It sends out, so as to effectively export the physical system of rubidium frequency standard and sensitive circuit internal temperature, avoids its internal temperature mistake
Heat.
When system works, when temperature-adjusting circuit is powered on, temperature control circuit utilizes the negative-feedback principle of thermistor, automatic to adjust
Electric current in section heating film, the temperature of temperature control bottom plate is controlled in a certain set temperature.Temperature control bottom plate metal material system
Make, magnetic cup bottom plate and magnetic cup lid make of magnetic screen metal material, and three constitutes a closed metal case.Since metal has
There is good heating conduction, after baseplate temp is controlled, the temperature of entire metal case is also controlled by, and is approximately one etc.
Wen Ti, can for provide in box a temperature uniformly, stationary temperature environment；
The heat that can realize that physical system and core circuit generate can be exported effectively, and guarantee internal system environment
Temperature stability has great promotion.
The working centre principle of atomic clock is the high stable feature of atomic transition energy level to be utilized, and atomic transition energy level holds
Vulnerable to the influence of temperature and magnetostatic field, to influence the long-term stability performance of atomic clock.This design can be with simply
Design just provides extremely stable temperature environment and pure magnetic field environment simultaneously for atomic clock core, and is fastenedly connected and sets
Meter, and the adjustable feature of thermal conductivity can be adapted for a variety of different applications.It can be collected with a kind of simple design
Improve at realization multiple performance.
Existing civilian and common military rubidium atomic clock does not have outer layer temperature control design, needs in various application occasions external
Independent temperature-controlling system, vibration prevention system or magnetic shielding system, but each system requires additional volume weight to realize, most
Lead to that machine volume is big, weight weight eventually, and each system can not cooperate, and can influence each other instead, such as shielding and antidetonation
System will affect temperature control, and individual temperature control system will affect the working performance of vibration prevention system and magnetic shielding system again.
And the present invention is antidetonation, outer layer temperature control, magnetic shielding system Integration Design, and mutual characteristic is made full use of to optimize complementation,
And directly design is realized inside rubidium atomic clock, it is compact-sized, be easily achieved and effect is more preferable.
Experiments have shown that can satisfy the vibration demand of the direction xyz 10g after using the system, internal magnetostatic field reduces 500
Times or more, core component temperature fluctuation is reduced to 0.1mK by 10mK, greatly improves system performance.
Compared with prior art, the present invention having the following advantages that and effect:
(1) physical system and circuit core component are in the Metal Temperature being made of temperature control bottom plate, magnetic cup bottom plate and magnetic cup lid
It controls in box, can be realized simultaneously and provide stable temperature environment, good magnetic field environment and the influence of anti-high energy particle for it.It can be same
Temperature sensitivity, magnetic susceptibility and the anti-high energy particle performance of Shi Gaishan rubidium atomic clock.The long-term of rubidium frequency standard can be greatly improved
Stability performance；
(2) rationally special using the high heat conductance low radiative thermal emissivity for the metal magnetic cup box being made of magnetic cup bottom plate and magnetic cup lid
Property, greatly improve the temperature control effect of outer layer temperature control；
(3) structure has a firm rigid structure, the reasonable arrangement mounting means of each element, and space utilization rate is high.
Have strong anti-vibration, shock resistance, anti-acceleration capabilities, has good mechanical environment adaptability；
(4) heat that the structure issues high-temperature component inside rubidium frequency standard and high power device is led by metal
The export of heat pad circle, effectively prevent system and element over-temperature, improves the reliability of rubidium frequency standard；
(5) it is designed using adjustable heat outlet washer, can conveniently adjust thermal conduction resistance.
(6) it is designed using integration, in the case where being slightly increased rubidium clock volume, just incorporates antidetonation, shielding and temperature
Spend stability.
Detailed description of the invention
Fig. 1 is a kind of outer layer temperature control and magnetic screen assembling structure schematic diagram for Rb atom frequency marking.
Wherein: 1- temperature control bottom plate, 2- magnetic cup bottom plate, 3- magnetic cup lid, 4- complete machine bottom plate, 5- heat outlet washer, 6- add
The outer temperature control circuit of hot film, 7- thermistor (can configure on demand, purchase in the market any), 8- is (according to specific need
Seek the models such as optional LM358 temperature control circuit).
Specific embodiment
Embodiment 1:
As can be seen from FIG. 1, a kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking, it is by temperature control bottom plate 1, magnetic
Screen substrate 2, magnetic cup lid 3, complete machine bottom plate 4, heat outlet washer 5, heating film 6, thermistor 7, temperature control circuit 8 form.Its feature
Be: magnetic cup bottom plate 2 is fixed on 1 upper surface of temperature control bottom plate；Heating film 6, thermistor 7 are fixed under temperature control bottom plate 1 with glue
Surface, and the two conducting wire is introduced into temperature control circuit 8；Heat outlet washer 5 is mounted on temperature control bottom plate 1 and complete machine bottom plate 4 with screw
Between；Magnetic cup lid 4 covers temperature control floor 1, and magnetic cup lid 4 is fixed with 1 side of temperature control floor by screw.
The temperature control circuit 8 is mounted on temperature control bottom plate 1, or is mounted on complete machine bottom plate 4.
The magnetic cup bottom plate 2 and magnetic cup lid 3 constitute a closed magnetic screen metal case.
By above technological means, core component (including rubidium clock physical system and core circuit (can select according to demand
Select, generally make by oneself) it is fixed by screws in 1 upper surface of temperature control bottom plate.In the case where can guaranteeing that core component effectively radiates,
The environment temperature of its work of stability contorting, the influence for shielding extraneous magnetostatic field and high energy particle simultaneously, can greatly promote rubidium
The long-term stability of atomic frequency standard is horizontal.The design structure is simple and easy, and Long Term Stability of Rubidium Atom Frenquency Standard is greatly improved
While performance, the environmental suitability of Rb atom frequency marking can be greatly strengthened, is conducive to improve the competitiveness of product, develops and lead to
With type product, reduce production cost.
This device has the following characteristics that
A, physical system and core circuit module are fixed on the temperature control bottom plate 1 of metal using screw, mechanical structure jail
Gu it is reliable, it can satisfy spaceborne and missile-borne demand, and effectively can quickly pass the heat of the generation of physical system and circuit
Lead to temperature control bottom plate 1；
B, magnetic cup bottom plate 2 and magnetic cup lid 3 constitute a closed magnetic screen metal case, and the magnetic field outside box is difficult to penetrate box
Body enters in box, and magnetic field is influenced small by box external environment changes of magnetic field in box；
C, and the design of magnetic cup bottom plate 2 and magnetic cup lid 3 provides not only magnetic screen environment, simultaneously because metal have it is good
Heating conduction, the closed metal box body constituted can be to provide a temperature in box after 1 temperature of temperature control bottom plate is controlled
Uniform, stationary temperature environment is spent, the thermal convection and heat radiation of physical system and circuit are effectively reduced.
D, heat outlet washer 5 is manufactured with metal material.It is acted on, first is that being used to support by temperature control bottom plate 1,2 and of magnetic cup bottom plate
The metal case that magnetic cup box 3 is constituted, constitutes an all-metal rigid structure；Second is that by suitably choose heat outlet washer 5 diameter,
Material and number, the capacity of heat transmission between adjustable temperature control bottom plate 1 and complete machine bottom plate 4, so as to rubidium frequency standard performance into
Row optimization
E, metal case is made of temperature control bottom plate 1, magnetic cup bottom plate 2 and magnetic cup lid 3 has screen to Energetic particle radiation
The effect of covering.When Rb atom frequency marking in space environment in use, using the present apparatus, can reduce High energy particles Radiation leads to first device
The risk of part damage and failure, improves the reliability of Rb atom frequency marking complete machine.
F, film 6, thermistor 7 are heated for heating and temperature feedback, and it is mounted on lower surface, avoids and upper table
The conflict of the component installation in face, makes full use of the space of outer temperature control bottom plate, can effectively reduce the size of outer temperature control bottom plate.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (3)
1. a kind of temperature control and magnetic cup device for atomic frequency standard, it by temperature control bottom plate (1), magnetic cup bottom plate (2), magnetic cup lid (3),
Complete machine bottom plate (4), heat outlet washer (5), heating film (6), thermistor (7), temperature control circuit (8) are constituted；It is characterized by: outer
Magnetic cup bottom plate (2) is mounted on temperature control bottom plate (1), and magnetic cup lid (3) covers on temperature control bottom plate (1) and is fixed on temperature control bottom plate (1)
Side, with silica gel solid due under outer temperature control bottom plate (2), thermistor (7) is embedded to the hole of outer temperature control bottom plate (1) for heating film (6)
In, the lead for heating film (6) and thermistor (7) is connect with temperature control circuit (8)；Heat outlet washer (5) is mounted on outer with screw
Between temperature control bottom plate (1) and complete machine bottom plate 4.
2. a kind of temperature control and magnetic cup device for atomic frequency standard according to claim 1, it is characterised in that: the temperature
Control circuit (8) is mounted on temperature control bottom plate (1), or is mounted on complete machine bottom plate (4).
3. a kind of temperature control and magnetic cup device for atomic frequency standard according to claim 1, it is characterised in that: the magnetic
Screen substrate (2) and magnetic cup lid (3) constitute a closed magnetic screen metal case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553795.1A CN110212918A (en) | 2019-06-25 | 2019-06-25 | A kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553795.1A CN110212918A (en) | 2019-06-25 | 2019-06-25 | A kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking |
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| CN110212918A true CN110212918A (en) | 2019-09-06 |
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| CN201910553795.1A Pending CN110212918A (en) | 2019-06-25 | 2019-06-25 | A kind of outer layer temperature control and magnetic shielding device for Rb atom frequency marking |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181549A (en) * | 2019-12-26 | 2020-05-19 | 兰州空间技术物理研究所 | Rubidium clock temperature coefficient optimization method |
| CN111261992A (en) * | 2019-12-25 | 2020-06-09 | 兰州空间技术物理研究所 | High anti-interference rubidium atomic clock microwave resonant cavity for physical part |
| CN112748655A (en) * | 2020-12-16 | 2021-05-04 | 北京无线电计量测试研究所 | Wide-temperature-range rubidium clock rapid temperature control device with vibration reduction function and use method |
| CN116979955A (en) * | 2023-09-22 | 2023-10-31 | 中国科学院精密测量科学与技术创新研究院 | Air pressure isolation device for rubidium atomic frequency standard |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261992A (en) * | 2019-12-25 | 2020-06-09 | 兰州空间技术物理研究所 | High anti-interference rubidium atomic clock microwave resonant cavity for physical part |
| CN111261992B (en) * | 2019-12-25 | 2022-03-04 | 兰州空间技术物理研究所 | Microwave resonant cavity for anti-interference physical part of rubidium atomic clock |
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| CN112748655A (en) * | 2020-12-16 | 2021-05-04 | 北京无线电计量测试研究所 | Wide-temperature-range rubidium clock rapid temperature control device with vibration reduction function and use method |
| CN116979955A (en) * | 2023-09-22 | 2023-10-31 | 中国科学院精密测量科学与技术创新研究院 | Air pressure isolation device for rubidium atomic frequency standard |
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Application publication date: 20190906 |