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

Inactive Publication Date: 2003-08-20
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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AI Technical Summary

Problems solved by technology

[0008] The structure of the earliest gravimeter was simple, but the precision was low; later, in order to improve its precision and sensitivity, an auxiliary system and mechanical amplification were added to the mechanical structure, which made the structure of the instrument more complicated.

Method used

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Embodiment Construction

[0033] The following will be described in detail in conjunction with the accompanying drawings and embodiments.

[0034] Depend on figure 1 It can be seen that the present invention is composed of a mechanical main body 1, a constant temperature controller 2, a micrometer 3, a collector 4, an automatic pendulum adjustment circuit 5, and an automatic pendulum lock circuit 6.

[0035] (1) Mechanical main body and elastic system

[0036] The performance of each part of the present invention, such as the high stability of the elastic system, the thermal structure of the constant temperature system, the precise measurement of the capacitance micrometer system, the fine adjustment of the swing adjustment mechanism and the leveling mechanism, must have a reasonable, stable and precise mechanical structure to guarantee. The mechanical main body structure of the present invention is composed of the following six parts: an elastic system, a capacitive sensor, a pendulum adjustment mec...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V7/12
Inventor 胡国庆姚植桂蒋幼华张勤耕张道忠朱晓平李家敏
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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