Rotation acceleration meter for earthquake

A technology of rotational acceleration and moving plate, applied in the direction of measurement of acceleration, velocity/acceleration/shock measurement, seismic signal receiver, etc., can solve the problems of not considering the rotation effect, and achieve compact structure, good reliability and reasonable design Effect

Inactive Publication Date: 2013-06-12
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION +2
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Problems solved by technology

A large number of studies have also found that in the seismic response of structures, the rotational component can generate a large shear force and bending moment in the structural members, and the torsional and sway components contribute greatly to the structural response. However, due to the lack of records of the rotational component, many The country does not consider the rotatio

Method used

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  • Rotation acceleration meter for earthquake
  • Rotation acceleration meter for earthquake
  • Rotation acceleration meter for earthquake

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Embodiment Construction

[0013] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] Depend on Figure 1-Figure 4 It can be seen that the present invention includes a casing 21 and a bottom plate 16, and the casing 21 is provided with a spoke-type mass spring device 31, two sets of pendulum-type differential capacitive transducers 30 installed symmetrically and oppositely, and two sets of moving coil dampers. 32. The circuit board 23, the spoke-type mass spring device 31 includes a central axis 1, a mass ring 2 with uniform mass distribution, and an inner ring 3, which are located in the middle of two sets of pendulum-type differential capacitance transducers 30, passing through the central axis 1 The lower end is connected to the bottom plate 16, and connected to the two swing seats 6 through the mass ring 2. The mass ring 2 and the inner ring 3 are connected through 2-8 symmetrically installed spring pieces 4 with the ...

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Abstract

The invention relates to a rotation acceleration meter for earthquake. The meter comprises a shell and a bottom plate. A spoke type mass spring device, two groups of symmetrically and reversely installed swinging type differential capacitive transducers, two groups of moveable coil dampers and a circuit board are arranged in the shell. The spoke type mass spring device is located between the two groups of swinging type differential capacitive transducers which respectively comprise an outer moveable polar plate, an inner moveable polar plate and a fixed polar plate. The circuit board comprises two capacitor voltage converting circuits, two conditioning circuits, a synthetic circuit and two damp adjusting circuits. The rotation acceleration meter for earthquake provided by the invention is compact in structure, reasonable in design, high in monitoring precision, good in reliability and wide in application range.

Description

technical field [0001] The invention relates to an accelerometer, in particular to a double-differential seismic rotation accelerometer based on a spoke-type mass spring device for strong earthquake observation. Background technique [0002] At present, the well-known strong earthquake observations use three-dimensional accelerometers, and the accelerations obtained are often considered as three translational vibrations in the east-west, north-south, and vertical directions. In fact, the complete motion characteristics of a rigid body at one point during an earthquake also include For rotation, it is necessary to measure vibrations with 6 degrees of freedom, that is, three translations and three rotations, especially near-field vibrations, where the rotation component is more obvious. At present, the phenomenon of rotational damage has been found in many major earthquakes. For example, more rotational damage has occurred in slender and tall buildings (such as chimneys, obeli...

Claims

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Application Information

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IPC IPC(8): G01V1/18G01P15/125
CPCG01P15/125G01P2015/0882
Inventor 杨学山高峰刘华泰杨巧玉杨立志王南董玲匙庆磊
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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