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Double-heating-layer thermal insulation device for SERF atom air chamber

An atomic gas chamber and double-layer heating technology, which is applied in temperature control using digital devices, temperature control using electric methods, temperature control, etc., can solve problems such as unstable temperature control of SERF atomic gas chambers, and ensure long-term effectiveness performance, ensure stability, and improve heating efficiency

Active Publication Date: 2019-11-05
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies in the prior art, a kind of double-layer heating insulation device for the SERF atomic gas chamber is proposed, which solves the problem of unstable temperature control of the SERF atomic gas chamber in the prior art

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  • Double-heating-layer thermal insulation device for SERF atom air chamber
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  • Double-heating-layer thermal insulation device for SERF atom air chamber

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Embodiment Construction

[0030] The atomic gas chamber is the core device of the SERF gyroscope. The temperature stability of the atomic gas chamber directly affects the polarizability of the atoms, which in turn affects the signal output of the SERF gyroscope. Ensuring the stability of the atomic gas cell temperature is crucial to the signal stability of the SERF gyroscope. The double-layer heating system can realize the stable control of the internal system at 0.1°C through the long-term heating of the high-power middle heating layer, and the high-stability temperature control of the atomic gas chamber better than 0.1°C through the long-term heating of the low-power inner heating layer. And by using polytetrafluoroethylene material as the outer insulation layer to avoid the temperature imbalance caused by high and low temperature impact, this structure can effectively stabilize the output signal of the SERF gyroscope.

[0031]The purpose of the present invention is to heat the atomic gas chamber to ...

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Abstract

A double-heating-layer thermal insulation device for an SERF atom air chamber comprises an external heat insulation layer, an intermediate heating layer, an internal heating layer, a nonmagnetic heating plate, a temperature sensor and a digital PID control based heating system. The atom air chamber clings to the internal heating layer, the nonmagnetic heating plate and the temperature sensor are arranged in the surfaces of the internal and intermediate heating layers, and the temperature sensor collects a temperature electric signal and feeds back the signal to the digital PID control based heating system to realize heating control of the internal and intermediate heating layers. The large-power intermediate heating layer carries out heating for long time to realize 0.1 DEG C level of stable control for the internal system, the small-power internal heating layer carries out heating for long time to realize high-stability temperature control greater than 0.1 DEG C level for the atom airchamber, and the external heat insulation layer made of a polytetrafluoroethylene material can avoid temperature imbalance caused by high and low temperature impact.

Description

technical field [0001] The invention relates to a double-layer heating and heat preservation device for a SERF atomic gas chamber, and belongs to the technical field of temperature stabilization control of the atomic gas chamber of a SERF gyroscope. Background technique [0002] The SERF gyroscope uses electron spin axis alignment to test load rotation information, and its core device is an atomic gas chamber. The atomic gas chamber is filled with alkali metal atoms, inert gas and buffer gas. The function of buffer gas is to reduce the collision of alkali metal atoms and inert gas atoms with the gas wall, generally by filling with buffer gas higher than one atmospheric pressure. Alkali metal atoms are in a solid state at room temperature, and are vaporized by heating to interact with laser and inert gas atoms. The SERF gyroscope works in the spin-exchange-free relaxation (SERF) state, the electron spin of the alkali metal atom is strongly coupled with the nuclear spin of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/60G05D23/24G05D23/19
CPCG01C19/60G05D23/1917G05D23/24
Inventor 秦德鑫霍娟秦亮石猛王天顺徐白描
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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