CN109753095A - A kind of atomic air chamber based on multi-point joint observing and controlling is without magnetic temperature control system - Google Patents
A kind of atomic air chamber based on multi-point joint observing and controlling is without magnetic temperature control system Download PDFInfo
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- CN109753095A CN109753095A CN201711069280.1A CN201711069280A CN109753095A CN 109753095 A CN109753095 A CN 109753095A CN 201711069280 A CN201711069280 A CN 201711069280A CN 109753095 A CN109753095 A CN 109753095A
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Abstract
The invention belongs to gas temperature control technology fields, and in particular to a kind of atomic air chamber based on multi-point joint observing and controlling is without magnetic temperature control system；The system casing module composition atomic air chamber；No. three temperature control sensors of temperature control module and No. two electrical-heating film cooperations, by temperature control in atomic air chamber in set temperature, No.1 temperature sensor is set at outer surface of outer cover right above No.1 electrical-heating film, is embedded in No. two temperature sensors immediately below No.1 electrical-heating film in inner casing；When ambient temperature fluctuation, the variation of No.1 temperature sensor sense ambient temperature, and variation of ambient temperature signal is transmitted to temperature control module, after temperature control module is to the signal processing received, the power of No.1 electrical-heating film is controlled, influence of the environment temperature to atomic air chamber head temperature is inhibited；Similarly, No. two temperature control sensors eliminate the temperature fluctuation at the top of atomic air chamber.Present invention inhibits atomic air chamber temperature gradient, atom laser gyroscope and atom magnetometer constant multiplier stability are improved.
Description
Technical field
The invention belongs to gas temperature control technology fields, and in particular to a kind of atomic air chamber based on multi-point joint observing and controlling
Without magnetic temperature control system.
Background technique
The constant multiplier stability of atom laser gyroscope and the temperature stability of atomic air chamber are closely related.Therefore, it is necessary to it
Carry out high accuracy temperature control.The correlations such as Pu Linsisidun university, the U.S., University of California at Irvine, BJ University of Aeronautics & Astronautics
Research institution has carried out the work in terms of gas chamber high precision temperature control in succession, and at temperature sensor location, realizes in succession
Higher accuracy of temperature control.But since gas chamber glass thermal conductivity is lower, the temperature at different positions is likely to differ
It is larger, that is, it is easy to produce biggish temperature gradient.
Under traditional single-sensor temperature control mode, even if temperature fluctuation is smaller at sensor after control, but in ring
Under the influence of border temperature and temperature gradient, remotely temperature stability is difficult to reach higher level range sensor on gas chamber,
This defect is difficult to overcome.
Summary of the invention
For the above-mentioned prior art, the purpose of the present invention is to provide a kind of atomic air chamber based on multi-point joint observing and controlling without
Magnetic temperature control system, solve single-sensor temperature control mode lower chamber on range sensor remotely temperature stability is difficult to reach higher
Horizontal problem.
In order to achieve the above object, the present invention uses following technical scheme.
A kind of atomic air chamber based on multi-point joint observing and controlling of the present invention without magnetic temperature control system, the system include: heating component,
Temperature control module and housing module；
Housing module includes inner casing and shell；
Inner casing is process for non-magnetic material, hollow airtight chamber's constituting atom gas chamber that inner casing is formed；
The heating component includes No.1 electrical-heating film and No. two electrical-heating films；
The No.1 electrical-heating film is arranged on the outside of inner casing, is located at the top of atomic air chamber, No. two electrical-heating films
It is arranged on the inside of inner casing, is located at atomic air chamber bottom, shell is set on the outside of inner casing, shell is process for non-magnetic material；
The heating component further includes No.1 temperature sensor, No. two temperature sensors and No. three temperature sensors；No. three
Temperature sensor is attached on No. two electrical-heating films；
No. three temperature control sensors and No. two electrical-heating film cooperations, by temperature control in atomic air chamber in setting temperature
Degree is located at right above No.1 electrical-heating film and No.1 temperature sensor is arranged in outer surface of outer cover, No.1 electrical-heating film just under
No. two temperature sensors are embedded in square inner casing；When ambient temperature fluctuation, No.1 temperature sensor sense ambient temperature
Variation, and variation of ambient temperature signal is transmitted to temperature control module, after temperature control module is to the signal processing received, control No.1
The power of electrical-heating film inhibits influence of the environment temperature to atomic air chamber head temperature；When No. two temperature control sensors perceive
When temperature fluctuation at the top of atomic air chamber, atomic air chamber head temperature variable signal is transmitted to temperature control module, temperature control module pair
After the signal processing received, temperature control module controls the power of No.1 electrical-heating film, eliminates the temperature wave at the top of atomic air chamber
It is dynamic.
Further, the temperature control module includes temperature sensing circuit, signal processing circuit and power amplification circuit；
The temperature sensing circuit includes 2 bridge circuits；No.1 temperature sensor, No. two temperature sensor cooperations are accurate
Resistance R1 and R2 constitute the first electric bridge, and the first electric bridge is connected with first instrument amplifier constitutes the first bridge circuit, the first electric bridge
Output signal is transferred to signal processing circuit after the amplification of first instrument amplifier differential；
No. three temperature sensors and precision resistance R3, R4 and R5 constitute the second electric bridge, and the second electric bridge and second instrument amplify
Device, which is connected, constitutes the second bridge circuit, and the second bridge output signal is transferred at signal after the amplification of second instrument amplifier differential
Manage circuit；
The signal processing circuit includes A/D module, processing unit and D/A module；First bridge circuit and the second electric bridge
The signal of circuit output obtains discrete signal after A/D module samples, and processing unit handles discrete signal, and passes through place
Reason unit PID module export control signal give D/A module, D/A module to convert the control signal received after export to
Power amplification circuit, power amplification circuit drive the No.1 electrical-heating film of heating component and No. two electric heating thin to atomic air chamber
Carry out temperature control.
Further, the bridge excitation signal is generated by signal processing circuit；
If signal processing circuit is equal to the bridge excitation signal of two-way bridge circuit are as follows:
V0=A0sin(2πf0t) (1)
In formula: A0For sinusoidal signal amplitude；f0For signal frequency, value range is 50kHz to 100kHz；T is the time；
Then, first via bridge circuit output signal obtains discrete signal V after A/D module samples1(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fs
For the sample frequency of A/D module；K is sample serial number, k1For the attenuation multiple of the output signal amplitude after the first electric bridge difference,
For the phase angle of the opposite bridge excitation signal of output signal after the first electric bridge difference；
No. second bridge circuit output signal obtains discrete signal V after A/D module samples2(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fs
For the sample frequency of A/D module；K is sample serial number, k2For the attenuation multiple of the output signal amplitude after the second electric bridge difference,
For the phase angle of the opposite bridge excitation signal of output signal after the second electric bridge difference.
Further, processing unit obtains the discrete signal V of the A/D module samples of temperature sensing circuit output1(k)1And V2
(k) after, bridge excitation signal V corresponding with each sample signal0(k) following coherent detection is carried out:
In formula: N is the hits of coherent detection；AmFor the amplification factor of instrument amplifier；f0For signal frequency, value model
It encloses for 50kHz to 100kHz；fsFor the sample frequency of A/D module；K is sample serial number, k1To export letter after the first electric bridge difference
The attenuation multiple of number amplitude,For the phase angle of the opposite bridge excitation signal of output signal after the first electric bridge difference；k2For through
The attenuation multiple of output signal amplitude after two electric bridge difference,For the opposite bridge excitation letter of output signal after the second electric bridge difference
Number phase angle；X1With X2Temperature height at temperature sensor is characterized respectively.
Further, the inner casing and shell are formed by no magnetic process for un-metal material.
Further, the inner casing rapidoprint is graphite
Further, the shell rapidoprint is heat-preservation cotton or aeroge.
Further, the hits N value of coherent detection is 0.1fs, fsFor the sample frequency of A/D module.
Further, the sample frequency f of A/D modulesValue is 10f0, f0For signal frequency, value range arrives for 50kHz
100kHz。
Further, the No.1 temperature sensor, No. two temperature sensors and No. three temperature sensors are platinum resistance.
Technical solution provided in an embodiment of the present invention has the benefit that
A kind of atomic air chamber based on multi-point joint observing and controlling of the present invention is without magnetic temperature control system, it is suppressed that atomic air chamber temperature ladder
Degree improves atom laser gyroscope and atom magnetometer constant multiplier stability.
A kind of atomic air chamber based on multi-point joint observing and controlling of the present invention is without magnetic temperature control system, by setting at the top of atomic air chamber
Temperature control module is set, so that atomic air chamber head temperature stability improves an order of magnitude.
Compared to traditional current source mode, a kind of atomic air chamber based on multi-point joint observing and controlling of the present invention is without magnetic temperature control system
System, by heating component and temperature control module, so that about two orders of magnitude of the thermometric increase resolution of atomic air chamber.
Detailed description of the invention
Fig. 1 is a kind of atomic air chamber based on multi-point joint observing and controlling of the present invention without magnetic temperature control system schematic diagram；
Fig. 2 is a kind of temperature sensing circuit schematic diagram of the present invention；
In figure: 1- No.1 temperature sensor, 2- No.1 electrical-heating film, No. bis- temperature sensors of 3-, 4- atomic air chamber, 5-
No. two electrical-heating films, No. tri- temperature sensors of 6-, 7- inner casing, 8- shell, 9- temperature sensing circuit, 10- signal processing circuit,
11- processing unit.
Specific embodiment
With reference to embodiment with attached drawing to a kind of atomic air chamber based on multi-point joint observing and controlling of the present invention without magnetic
Temperature control system is described in detail.
As shown in Figure 1, a kind of atomic air chamber based on multi-point joint observing and controlling of the present invention is without magnetic temperature control system, including heating group
Part, temperature control module, inner casing 7 and shell 8；
Hollow airtight chamber's constituting atom gas chamber 4 that inner casing 7 is formed, preferably atomic air chamber 4 are rectangular chamber；Inner casing 7 is
No magnetic process for un-metal material forms, the preferred graphite of 7 rapidoprint of inner casing, and inner casing 7 keeps atomic air chamber 4 heated more evenly, inhibits
Temperature gradient in atomic air chamber 4；
The heating component includes No.1 electrical-heating film 2 and No. two electrical-heating films 5；
4 bottom of atomic air chamber, is arranged No. two electrical-heating films 5 on the inside of inner casing 7,4 top of atomic air chamber, sets on the outside of inner casing 7
No.1 electrical-heating film 2 is set, shell 8 is set on the outside of inner casing, shell 8 forms for no magnetic process for un-metal material, and shell 8 processes material
Expect that preferred heat-preservation cotton or aeroge, shell 8 are used for the heat preservation of inner casing 7, the heat between atomic air chamber 4 and ambient enviroment is inhibited to hand over
It changes.
The heating component further includes 1, No. two temperature sensor 3 of No.1 temperature sensor and No. three temperature sensors 6；Three
Number temperature sensor 6 is arranged in 4 bottom of atomic air chamber, is attached on No. two electrical-heating films 5.
No. three temperature control sensors 6 and No. two electrical-heating films 5 cooperate, by temperature control in atomic air chamber 4 at 110 DEG C
Left and right, but farther out due to No. three temperature control sensors 6 of 4 distance from top of atomic air chamber, the temperature in region wave affected by environment
Dynamic maximum, is the temperature controlled weak link of atomic air chamber 4.In view of the above-mentioned problems, being located at No.1 electricity in 8 outer surface of shell
It heats and No.1 temperature sensor 1 is set right above film 2, in inner casing 7, No. two temperature are embedded in immediately below No.1 electrical-heating film 2
Spend sensor 3；When ambient temperature fluctuation, the variation of 1 sense ambient temperature of No.1 temperature sensor, and by environment temperature
Variable signal is transmitted to temperature control module, and temperature control module controls the power of No.1 electrical-heating film 2, inhibits environment temperature to atom gas
The influence of 4 head temperature of room similarly, will be former when No. two temperature control sensors 3 perceive the temperature fluctuation at 4 top of atomic air chamber
Sub- 4 head temperature variable signal of gas chamber is transmitted to temperature control module, and temperature control module controls the power of No.1 electrical-heating film 2, eliminates
The temperature fluctuation at 4 top of atomic air chamber.
1, No. two temperature sensor 3 of the No.1 temperature sensor and No. three preferred platinum resistance of temperature sensor 6, preferably
Pt100 platinum resistance.
The temperature control module includes temperature sensing circuit 9, signal processing circuit 10 and power amplification circuit；
The temperature sensing circuit 9 includes 2 bridge circuits；As shown in Fig. 2, 1, No. two temperature of No.1 temperature sensor passes
Sensor 3 cooperates precision resistance R1 and R2 to constitute the first electric bridge, and the first electric bridge is connected with first instrument amplifier constitutes the first electric bridge
Circuit, the first bridge output signal are transferred to signal processing circuit 10 after the amplification of first instrument amplifier differential；
Bridge excitation signal is generated by signal processing circuit 10, RGResistance is controlled for instrument amplifier amplification factor；
Similar with the first bridge circuit, No. three temperature sensors 6 and precision resistance R3, R4 and R5 constitute the second electric bridge, the
Two electric bridges are connected with second instrument amplifier constitutes the second bridge circuit, and the second bridge output signal is poor through second instrument amplifier
Signal processing circuit 10 is transferred to after dividing amplification；
The signal processing circuit 10 includes A/D module, processing unit and D/A module；First bridge circuit and the second electricity
The signal of bridge circuit output obtains discrete signal after A/D module samples, and processing unit handles discrete signal, and passes through
Processing unit PID module is exported after control signal gives D/A module, D/A module to convert the control signal received and is exported
To power amplification circuit, power amplification circuit drives 5 pairs of originals of No.1 electrical-heating film 2 and No. two electrical-heating films of heating component
Sub- gas chamber 4 carries out temperature control；
If signal processing circuit 10 is equal to the bridge excitation signal of two-way bridge circuit are as follows:
V0=A0sin(2πf0t) (1)
In formula: A0For sinusoidal signal amplitude；f0For signal frequency, value range is 50kHz to 100kHz；T is the time；
Then, discrete signal V is obtained after A/D module samples for first via bridge circuit output signal1(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fs
For the sample frequency of A/D module, generally higher than 10f0；K is sample serial number, k1For the output signal amplitude after the first electric bridge difference
Attenuation multiple,For the phase angle of the opposite bridge excitation signal of output signal after the first electric bridge difference；
Discrete signal V is obtained after A/D module samples to No. second bridge circuit output signal2(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fs
For the sample frequency of A/D module, generally higher than 10f0；K is sample serial number, k2For the output signal amplitude after the second electric bridge difference
Attenuation multiple,For the phase angle of the opposite bridge excitation signal of output signal after the second electric bridge difference；
Processing unit obtains the discrete signal V of the A/D module samples of temperature sensing circuit output1(k)1And V2It (k), will after
Its bridge excitation signal V corresponding with each sample signal0(k) following coherent detection is carried out:
In formula: N is the hits of coherent detection, preferably N=0.1fs；AmFor the amplification factor of instrument amplifier；f0For letter
Number frequency, value range are 50kHz to 100kHz；fsFor the sample frequency of A/D module, generally higher than 10f0；K is sample serial number,
k1For the attenuation multiple of the output signal amplitude after the first electric bridge difference,For after the first electric bridge difference output signal it is relatively electric
The phase angle of bridge pumping signal；k2For the attenuation multiple of the output signal amplitude after the second electric bridge difference,It is poor through the second electric bridge
Phase angle of the output signal with respect to bridge excitation signal after point；
When temperature changes, k1、k2、It can occur to change accordingly, X1With X2It may also change accordingly, X1With X2
Temperature height at temperature sensor can be characterized respectively.
Claims (10)
1. a kind of atomic air chamber based on multi-point joint observing and controlling is without magnetic temperature control system, which is characterized in that the system includes: heating group
Part, temperature control module and housing module；
Housing module includes inner casing and shell；
Inner casing is process for non-magnetic material, hollow airtight chamber's constituting atom gas chamber that inner casing is formed；
The heating component includes No.1 electrical-heating film and No. two electrical-heating films；
The No.1 electrical-heating film is arranged on the outside of inner casing, is located at the top of atomic air chamber, No. two electrical-heating films setting
On the inside of inner casing, it is located at atomic air chamber bottom, shell is set on the outside of inner casing, shell is process for non-magnetic material；
The heating component further includes No.1 temperature sensor, No. two temperature sensors and No. three temperature sensors；No. three temperature
Sensor is attached on No. two electrical-heating films；
No. three temperature control sensors and the cooperation of No. two electrical-heating films, by temperature control in atomic air chamber in set temperature,
Outer surface of outer cover is located at right above No.1 electrical-heating film and No.1 temperature sensor is arranged, in No.1 electrical-heating film underface
No. two temperature sensors are embedded in shell；When ambient temperature fluctuation, the variation of No.1 temperature sensor sense ambient temperature,
And variation of ambient temperature signal is transmitted to temperature control module, after temperature control module is to the signal processing received, control No.1 electricity adds
The power of hot film inhibits influence of the environment temperature to atomic air chamber head temperature；When No. two temperature control sensors perceive atom
When the temperature fluctuation of plenum roof, atomic air chamber head temperature variable signal is transmitted to temperature control module, temperature control module is to reception
After the signal processing arrived, temperature control module controls the power of No.1 electrical-heating film, eliminates the temperature fluctuation at the top of atomic air chamber.
2. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 1 is without magnetic temperature control system, feature exists
In: the temperature control module includes temperature sensing circuit, signal processing circuit and power amplification circuit；
The temperature sensing circuit includes 2 bridge circuits；No.1 temperature sensor, No. two temperature sensors cooperate precision resistance
R1 and R2 constitutes the first electric bridge, and the first electric bridge is connected with first instrument amplifier constitutes the first bridge circuit, the output of the first electric bridge
Signal is transferred to signal processing circuit after the amplification of first instrument amplifier differential；
No. three temperature sensors and precision resistance R3, R4 and R5 constitute the second electric bridge, the second electric bridge and second instrument amplifier phase
The second bridge circuit is even constituted, the second bridge output signal is transferred to signal processing electricity after the amplification of second instrument amplifier differential
Road；
The signal processing circuit includes A/D module, processing unit and D/A module；First bridge circuit and the second bridge circuit
The signal of output obtains discrete signal after A/D module samples, and processing unit handles discrete signal, and single by processing
First PID module is exported after control signal gives D/A module, D/A module to convert the control signal received and is exported to power
Amplifying circuit, power amplification circuit drive the No.1 electrical-heating film of heating component and No. two electric heating thin to atomic air chamber progress
Temperature control.
3. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 2 is without magnetic temperature control system, feature exists
In: the bridge excitation signal is generated by signal processing circuit；
If signal processing circuit is equal to the bridge excitation signal of two-way bridge circuit are as follows:
V0=A0sin(2πf0t) (1)
In formula: A0For sinusoidal signal amplitude；f0For signal frequency, value range is 50kHz to 100kHz；T is the time；
Then, first via bridge circuit output signal obtains discrete signal V after A/D module samples1(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fsFor A/D
The sample frequency of module；K is sample serial number, k1For the attenuation multiple of the output signal amplitude after the first electric bridge difference,For through
Phase angle of the output signal with respect to bridge excitation signal after one electric bridge difference；
No. second bridge circuit output signal obtains discrete signal V after A/D module samples2(k) are as follows:
In formula: AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is 50kHz to 100kHz；fsFor A/D
The sample frequency of module；K is sample serial number, k2For the attenuation multiple of the output signal amplitude after the second electric bridge difference,For warp
Phase angle of the output signal with respect to bridge excitation signal after second electric bridge difference.
4. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 3 is without magnetic temperature control system, feature exists
In: processing unit obtains the discrete signal V of the A/D module samples of temperature sensing circuit output1(k)1And V2(k) after, with each
The corresponding bridge excitation signal V of sample signal0(k) following coherent detection is carried out:
In formula: N is the hits of coherent detection；AmFor the amplification factor of instrument amplifier；f0For signal frequency, value range is
50kHz to 100kHz；fsFor the sample frequency of A/D module；K is sample serial number, k1For the output signal width after the first electric bridge difference
The attenuation multiple of value,For the phase angle of the opposite bridge excitation signal of output signal after the first electric bridge difference；k2For through the second electricity
The attenuation multiple of output signal amplitude after bridge difference,For the opposite bridge excitation signal of output signal after the second electric bridge difference
Phase angle；X1With X2Temperature height at temperature sensor is characterized respectively.
5. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 1 is without magnetic temperature control system, feature exists
It is formed in: the inner casing and shell by no magnetic process for un-metal material.
6. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 5 is without magnetic temperature control system, feature exists
In: the inner casing rapidoprint is graphite.
7. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 5 is without magnetic temperature control system, feature exists
In: the shell rapidoprint is heat-preservation cotton or aeroge.
8. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 3 or 4 is without magnetic temperature control system, feature
Be: the hits N value of coherent detection is 0.1fs, fsFor the sample frequency of A/D module.
9. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 3 or 4 is without magnetic temperature control system, feature
It is: the sample frequency f of A/D modulesValue is 10f0, f0For signal frequency, value range is 50kHz to 100kHz.
10. a kind of atomic air chamber based on multi-point joint observing and controlling according to claim 1 is without magnetic temperature control system, feature exists
In: the No.1 temperature sensor, No. two temperature sensors and No. three temperature sensors are platinum resistance.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112326051A (en) * | 2020-11-06 | 2021-02-05 | 中国船舶重工集团公司第七0七研究所 | High-precision non-magnetic temperature measurement system for atomic gas chamber of SERF 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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