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System and method for measuring gravity acceleration by utilizing optical fiber technology

A gravitational acceleration and optical fiber technology, applied in the direction of measuring devices, gravitational field measurement, geophysical measurement, etc., can solve the problems of rough measurement results, measurement accuracy and stability, and the inability to obtain long-term changes in gravitational acceleration in real time. Small measurement error, high stability, and the effect of reducing measurement noise

Inactive Publication Date: 2012-08-01
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the limitation of these methods is that the long-term change of the acceleration of gravity cannot be obtained in real time, the measurement results are relatively rough, and the measurement accuracy and stability of the system need to be improved

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  • System and method for measuring gravity acceleration by utilizing optical fiber technology
  • System and method for measuring gravity acceleration by utilizing optical fiber technology
  • System and method for measuring gravity acceleration by utilizing optical fiber technology

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0033] Such as figure 1 as shown, figure 1 It is a schematic structural diagram of a system for measuring gravitational acceleration using optical fiber technology according to an embodiment of the present invention. The system includes five parts: I fiber optic light source system, II Michelson interference system, III Fabry-Perot interference system, IV vacuum system and V data acquisition and processing system; wherein, each optical fiber device in the figure is connected by a single-mode optical fiber.

[0034] Among them, the laser wavelength of the fiber laser in the fiber optic light source system is used as the optical scale of the Michelson interference system, and the moving right-angle prism in the Michelson i...

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Abstract

The invention discloses a system and a method for measuring gravity acceleration by utilizing optical fiber technology. The system comprises an optical fiber light source system, a Michelson interference system, a Fabry-Perot interference system, a vacuum system and a data collection processing system. The Michelson interference system is used for measuring moving distance of a moving rectangular prism in the vacuum system, the Fabry-Perot interference system is used for monitoring output wavelength of an optical laser in real time, a high-accuracy time frequency standard regulator timing system of the data collection processing system is used for recording moving time of the moving rectangular prism, a multi-channel data collection card of the data collection processing system is used for collecting position and time of the moving prism and wavelength of the optical laser in real time, and finally change relation of the gravity acceleration with time is obtained through computing program. The system and the method have the advantages of being simple, convenient, easy to operate, high in stability and capable of continuously monitoring the change relation of the gravity acceleration at the specific position with the time in real time for a long time.

Description

technical field [0001] The invention relates to the technical field of gravitational acceleration measurement, in particular to a system and method for measuring gravitational acceleration in real time and continuously for a long time using optical fiber technology. Background technique [0002] With the development of basic research and space technology, there are more and more studies on geodynamics and the fine structure of the earth's interior, and it is particularly important to use gravity field data to study related issues. Among them, the gravitational acceleration on the earth's surface is the most important and common physical quantity. For hundreds of years, many scientists have made efforts in theory and experiment to try to continuously improve the measurement accuracy. The gravitational acceleration on the earth's surface is a physical constant that changes with the region. Due to the influence of many factors in astrophysics, it changes with time even in a fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V7/14G01V7/04
Inventor 丛侃侃姬扬
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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