High-precision non-magnetic temperature measurement system for atomic air chamber of SERF gyroscope

Abstract

The invention relates to a high-precision non-magnetic temperature measurement system for an atomic air chamber of an SERF gyroscope, and the system is characterized in that the system comprises a temperature sensor, the atomic air chamber, a numerical control constant current source module, a voltage collection module, and a signal processing display module, wherein the temperature sensor and theatomic air chamber are in contact and fixedly installed together, the temperature sensor is respectively connected with the numerical control constant current source module and the voltage collectionmodule, and the voltage collection module is connected with the signal processing display module. The temperature of the air chamber can be fed back in a non-magnetic, high-stability and high-precision mode, closed-loop control over temperature control is further achieved, and a stable constant-temperature environment is provided for alkali metal atoms in the atomic air chamber. And while the precision requirement is met, a relatively compact size is realized, and the resistance influence of a lead is eliminated.

Description

technical field [0001] The invention belongs to the technical field of inertial measurement sensors, and relates to a temperature measurement system, in particular to a high-precision non-magnetic temperature measurement system for an atomic gas chamber of a SERF gyroscope. Background technique [0002] SERF atomic spin gyroscope (SERF gyroscope for short) is realized by using the principle of atomic spin-free exchange relaxation. The working principle of the SERF gyroscope is as follows: the electron spin of the alkali metal atom and the nuclear spin of the inert gas work in the SERF state by manipulating the electron spin of the alkali metal atom. Strong spin coupling. When the carrier rotates, the electron spin of the alkali metal atom keeps its axis fixed, and the detection laser is fixed on the carrier and rotates with the carrier. The angle between it and the electron spin reflects the relative inertial space rotation of the carrier. [0003] The schematic diagram of...

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Problems solved by technology

Metal thermal resistance, the principle of temperature measurement is to use the physical characteristics of its own resistance changing with temperature. As a temperature sensor, the advantage is high linearity and stable performance, but because it is converted into a voltage signal by a constant current source and fed back to the microcontroller The system is inevitably accompanied by the generation of an additional magnetic field; while the thermocouple, the principle of temperature measurement is based on the thermoelectric effect of the object. low precision

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