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Gyroscope based on ion trap chip and rotation measurement method thereof

An ion trap and gyroscope technology, applied in the field of gyroscopes, can solve the problems of high resolution and sensitivity of atomic gyroscopes, low measurement sensitivity, hindering the application of gyroscopes, etc. Captivity stabilization effect

Pending Publication Date: 2021-11-16
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Optical gyroscopes are easy to realize miniaturization and practicality. Its shortcomings and shortcomings are mainly low measurement sensitivity; and the energy of atoms is greater than that of photons. Under the same interference loop area, the phase of atomic gyroscopes is much larger than that of optical gyroscopes. , so the resolution and sensitivity of the atomic gyroscope are relatively higher
At present, there are mainly two kinds of atomic gyroscopes of this kind realized in the world - one hot atomic beam gyroscope and cold atomic gyroscope. Often bulky, preventing the use of these gyroscopes in many specific IMUs and platforms where size is critical

Method used

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  • Gyroscope based on ion trap chip and rotation measurement method thereof
  • Gyroscope based on ion trap chip and rotation measurement method thereof
  • Gyroscope based on ion trap chip and rotation measurement method thereof

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Embodiment

[0041] refer to figure 1 As shown, the schematic diagram of the vacuum part of the gyroscope based on the ion trap chip provided by this embodiment is mainly composed of two parts, the ion pump 1 and the vacuum cavity 9, and they are connected by a three-way vacuum pipeline 3, through The ion pump can maintain the system vacuum at 10 -9 Pa; Vacuum angle valve 2 is used to connect the molecular pump unit to pre-evacuate the vacuum part. There are 6 CF35 quartz observation windows, 1 CF100 quartz observation window 6, 1 CF100 electrode lead flange 24, 1 CF35 flange port for connecting the three-way vacuum pipe 3 and 1 CF35 coaxial BNC on the vacuum chamber Flange 7 is connected to an external radio frequency voltage source. Among them, CF100 quartz observation window 6 is used for fluorescence signal detection, CF35 quartz observation window 5 is used for 729nm laser input, CF35 quartz observation window 8 is used for circularly polarized 397nm laser required for laser cooling...

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Abstract

The invention discloses a gyroscope based on an ion trap chip and a rotation measurement method thereof. The gyroscope comprises: a vacuum cavity provided with a plurality of observation windows for laser input and fluorescence signal detection; an ion pump connected with the vacuum cavity so as to maintain the vacuum degree in the vacuum cavity; a calcium furnace used for ejecting calcium atoms; and a micro surface electrode ion trap located in the vacuum cavity and used for generating a three-dimensional trapping potential trap, wherein <40>Ca<+> ions generated by the calcium atoms ejected by an atom furnace in a photoionization mode are loaded into the trapping potential trap. According to the invention, an ion trap chip is used for controlling cold ions, the device can be miniaturized, and the micro gyroscope is convenient to carry and has the potential of high integration.

Description

technical field [0001] The invention relates to the technical field of gyroscopes, in particular to a gyroscope based on an ion trap chip and a rotation measurement method thereof. Background technique [0002] A gyroscope is a device that measures or maintains orientation and angular velocity. The measurement of the angle of rotation or angular rate can be integrated over time to determine changes in the direction of the gyroscope's rotation angle. Examples include inertial navigation, inertial measurement units, platform stabilization, and ground vehicles. Attitude control system, drilling survey, ship, aerospace and other applications. At present, the gyroscopes used for high-precision inertial navigation are mainly optical gyroscopes and atomic gyroscopes. The principle is to use the phase shift of the interference fringes caused by the Sagnac effect caused by the rotation in the interference loop to measure Rotation speed: [0003] [0004] Among them, A is the are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/64
CPCG01C19/64
Inventor 戴双晴陈亮魏雅琪刘志超李冀冯芒
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI