Translational gravity/acceleration measuring sensitive structure

A technology of acceleration measurement and sensitive structure, applied in the direction of speed/acceleration/shock measurement, measurement of acceleration, measurement device, etc., can solve the problems of complex assembly process and process, difficult to correct nonlinear effects, large volume and weight, etc., to eliminate Drift and instrument dropout error, increase the capacitance displacement sensing area, increase the effect of heat dissipation area

Pending Publication Date: 2021-11-23
INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS
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Problems solved by technology

[0004] Among the many sensitive probes for gravity measurement, the quartz pendulum accelerometer is used in various types of gravimeters because of its small size. This probe comes from the mature technology of high-precision inertial navigation system, and there is a large Non-linear effect; the cable-pull precision pendulum probe with mechanical amplification ability represented by ZLS has high sensitivity. This technology comes from the static gravimeter of L&R company. However, the nonlinear effec

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  • Translational gravity/acceleration measuring sensitive structure
  • Translational gravity/acceleration measuring sensitive structure
  • Translational gravity/acceleration measuring sensitive structure

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[0029] In order to facilitate the understanding of the present invention, the present invention will be understood, and the embodiments described herein are not intended to illustrate the invention.

[0030] A flat gravity / acceleration measurement sensitive structure, including frame 1, sampling mass barrel 2, variable pitch capacitive displacement sensor 3, and reed group 4,

[0031] Frame 1: Frame of the Gravity / Acceleration Measurement Platform. The frame 1 can be a structural type such as a hollow rectangular cuboid, a central cylinder. Upper and lower permanent magnets, up and down cylinders, and the upper and lower magnetic blocks are inherently connected to the frame.

[0032]Sampling mass cartridge 2: The upper end of the sampling mass cartridge 2 extends into the upper cylinder 9, and the lower end of the sampling mass barrel 2 extends into the lower cylinder 10, and the upper cylinder 9 is connected to the top inner wall of the frame 1, The cylinder 10 is connected t...

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Abstract

The invention discloses a translational gravity/acceleration measuring sensitive structure, which comprises a frame, a sampling mass cylinder, a variable-spacing capacitive displacement sensor and a reed group, and is characterized in that the sampling mass cylinder is connected with the variable-spacing capacitive displacement sensor; and one end of each reed group is in insulated connection with the side wall of the sampling mass cylinder, and the other end is in insulated connection with the inner wall of the frame. An upper acceleration compensation coil and a lower acceleration compensation coil which are connected in series, and an upper acceleration measuring coil and a lower acceleration measuring coil which are connected in series are respectively arranged outside the upper end and the lower end of the sampling mass cylinder. According to the invention, the deflection motion mode of the sampling mass cylinder is eliminated in principle, and the translational motion of the sampling mass cylinder in the measuring process is realized; the displacement measuring precision is improved; and the heat dissipation area of the coil is increased, assembling is easy, and the size is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of gravity / acceleration measurement, in particular to a translational gravity / acceleration measurement sensitive structure. Background technique [0002] Measuring gravity is essentially measuring (gravitational) acceleration. The gravity measurement of the moving base with ships or aircraft as the carrier is one of the important means to obtain high-precision gravity data on the surface, and its results have important applications in geodetic surveying, resource exploration and other fields (Lacoste L.J.B., Reviews of geophysics, 1967(5) , 477; Forsberg R. et al., 2015(6), 265; Hu et al., Navigation Positioning & Timing, 2017(4), 10). Gravity measurement on moving base is a good balance of measurement accuracy and measurement efficiency - portable gravimeter has high accuracy but low measurement efficiency, while satellite gravity measurement is efficient but has low accuracy in the short wavelength part o...

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Application Information

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IPC IPC(8): G01V7/00G01P15/125
CPCG01V7/00G01P15/125
Inventor 涂海波孙恒刘坤刘孙君柳林涛
Owner INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS
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