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Feedback type seismometer automatic real-time zero setting circuit and feedback type seismometer

A zero-adjustment circuit and seismometer technology, applied in geophysical measurement, instruments, etc., can solve the problems of complex circuit structure, complex manufacturing and processing, high cost, etc., and achieve simplified circuit structure, low cost, no structural parts and power consumption Effect

Pending Publication Date: 2022-07-26
DADU RIVER HYDROPOWER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of complex circuit structure, complicated manufacturing process and high cost in existing feedback seismometer zeroing devices, the purpose of the present invention is to provide a new type of feedback seismometer automatic real-time zeroing circuit, which can simplify the circuit structure, reduce processing complexity, low cost, no structural parts and low power consumption, etc., which are convenient for practical application and promotion

Method used

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  • Feedback type seismometer automatic real-time zero setting circuit and feedback type seismometer
  • Feedback type seismometer automatic real-time zero setting circuit and feedback type seismometer

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Embodiment 1

[0033] like figure 2 As shown in the figure, the automatic real-time zero-setting circuit of the feedback seismometer provided in this embodiment includes, but is not limited to, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, The first capacitor C1, the second capacitor C2, the feedback coil L1, the first operational amplifier U1, the second operational amplifier U2 and the third operational amplifier U3, wherein the feedback coil L1 is located in the magnetic cylinder 7 of the feedback seismometer and Used to keep the differential capacitor 3 of the feedback seismometer in a balanced position; one end of the first resistor R1 is electrically connected to the vibration signal output end of the feedback seismometer, and the other end of the first resistor R1 The negative input terminal of the first operational amplifier U1 is electrically connected to one end of the first capacitor C1, and the output terminal of the f...

Embodiment 2

[0043] like figure 2 As shown, this embodiment further provides a feedback seismometer based on the technical solution of the first embodiment, including but not limited to a sine wave generating circuit, a signal transformer, a differential capacitor 3, a preamplifier circuit 4, The phase-sensitive detection circuit 5, the integrating circuit 6, the magnetic cylinder 7, the feedback coil L1, and the automatic real-time zero-setting circuit of the feedback seismometer as described in the first embodiment, wherein the differential capacitor 3 is composed of parallel and aligned parallel capacitors. A first metal plate 31, a second metal plate 32 and a third metal plate 33 are formed, the second metal plate 32 is fixed on the casing of the seismometer, and the first metal plate 31 and the third metal plate 33 are connected to each other. together and the distance between the two plates is fixed, the feedback coil L1 is located in the magnetic cylinder 7 and is used to keep the ...

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Abstract

The invention relates to the technical field of earthquake monitoring, and discloses an automatic real-time zero setting circuit of a feedback type seismometer and the feedback type seismometer. Through the creation of the invention, a feedback type seismometer zero setting scheme without zero setting of a mechanical structure is provided, namely, on the basis of the configuration of an existing feedback type seismometer, the purpose of automatic real-time zero setting of a differential capacitor can be achieved by additionally arranging four resistors, one capacitor, two operational amplifiers and the electric connection relation between the resistors, the capacitor and the operational amplifiers and a feedback coil and the like; therefore, a zero detection circuit, a zero setting motor driving circuit, a zero setting motor, a complex mechanical structure used for increasing / reducing the distance between differential capacitor plates and the like in the existing feedback type seismometer zero setting device can be replaced, and the purposes of simplifying the circuit structure, reducing the processing complexity, being low in cost, having no structural member, being low in power consumption and the like are achieved. And practical application and popularization are facilitated.

Description

technical field [0001] The invention belongs to the technical field of earthquake monitoring, and in particular relates to an automatic real-time zero-setting circuit of a feedback type seismometer and a feedback type seismometer. Background technique [0002] A seismometer is a sensor for sensing seismic waves. It can objectively and timely record ground vibrations. Its basic principle is to use the inertia of a suspended weight. An analog curve with different fluctuation amplitudes (called seismic spectrum) is recorded by the signal acquisition circuit. Since the fluctuation amplitude of the curve corresponds to the amplitude of the ground vibration caused by the seismic wave, it indicates the intensity of the earthquake. The magnitude of the fluctuation is used to calculate the magnitude of the earthquake, which in turn clearly identifies the effects of various types of shock waves. [0003] The existing principle of zero adjustment of seismometers relies on the adjustme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V13/00
CPCG01V13/00
Inventor 黄会宝赵杰柯虎高志良高强熊敏
Owner DADU RIVER HYDROPOWER DEV
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