High precision gravimeter

A gravimeter, high-precision technology, used in instruments, scientific instruments, measuring gravitational fields, etc., can solve the problems of complex instrument structure and low precision, achieve high sensitivity, reasonable thermal structure design, and reduce manual calculation and management work. Effect
CN1118713CInactive Publication Date: 2003-08-20INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
Publication Date
2003-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The presnet invention relates to a high-precision gravireceptor and relates to geoscience observation technigue, in particular, it is suitable for use in solid tide research and observation of preearthquake warning signs. It is composed of machine main body, thermostat, micrometer, and collector. We use vertical hanging elastic system, double layer thermostat and feedback temperature control and three piece type capacitance micrometer. Advantages are: simple structure, high sensitivity and high precision.
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Description

technical field

[0001] The invention relates to the geoscience observation technology, and is especially suitable for the research of solid tides and the observation of earthquake precursors. Background technique

[0002] Since the 1950s, the gravimeter has developed greatly, and its accuracy ranges from milligal to microgall. (1 Gal = 1cm / s 2 ) At present, the Lacoste gravimeter and geodynamic gravimeter in the United States are used more internationally; the GS gravimeter in West Germany; the CG-3 gravimeter in Canada. With the development of electronic technology, high-precision gravimeters such as laser gravimeters and superconducting gravimeters have appeared.

[0003] Relative gravimeter, that is, spring gravimeter, its basic principle is to use elastic force to balance gravity. When the gravitational field changes, the length of the spring changes accordingly. Therefore, the measurement of the acceleration of gravity can be transformed into the measurement of the ...

Claims

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