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Short-period digital seismometer

A seismometer and short-period technology, applied in the direction of seismic signal receivers, measuring devices, instruments, etc., can solve problems such as the inability to determine the displacement direction, and achieve the effects of strong anti-interference ability, high sensitivity, and high resolution

Inactive Publication Date: 2010-05-19
李子恩 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In practical applications, the displacement has two directions, that is, after one direction is selected, the displacement can be divided into positive and negative, so the displacement direction cannot be determined by measuring the moiré fringe signal with a photoelectric element

Method used

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  • Short-period digital seismometer

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] as shown in the picture Shown, a kind of short-period digital seismometer comprises instrument column (1), combined cross spring (2); Periodic foot (8), zero point foot (10) and three-point vibration pick-up; The three-point The vibration pickups include east-west horizontal vibration pickups, north-south horizontal vibration pickups and vertical vibration pickups, and the transducer device of the vibration pickups includes a grating ruler and a moving coil transducer, and the grating ruler Installed on the horizontal vibration pickup of the seismometer; the east-west horizontal vibration pickup and the north-south horizontal vibration pickup have the same structure, and both include an inertial pendulum and a moving coil transducer, wherein the inertial pendulum includes a pendulum Bracket (3), weight (4), weight bracket (9) and lock hammer sc...

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Abstract

The invention relates to a short-period digital seismometer which comprises a three-component vibration pickup. The three-component vibration pickup comprises an east-west horizontal vibration pickup, a north-south horizontal vibration pickup and a vertical vibration pickup, wherein the three-component vibration pickup comprises an inertia pendulum; a transduction device of the three-component vibration pickup comprises at least one grating ruler, the grating rulers are fixed on the tip of the inertia pendulum of the vibration pickup, and each grating ruler is correspondingly provided with a matched reading head; and the reading heads are fixed opposite to the grating rulers and separated by a distance with the grating rulers. Through the design of skillfully adding the grating rulers on the pendulum tip of the vibration pickup, a high-speed linear grating system is innovatively adopted in a conventional earthquake monitoring device. The optoelectronic system has extremely high resolution (the precision is 50 nanometers) and can detect dinky vibration displacements of the vibration pickup of the seismometer.

Description

technical field [0001] The present invention relates to an earthquake vibration measurement device, especially a seismic measurement device that uses RGH precision grating ruler as an earthquake vibration measurement sensor. The device also uses the latest embedded technology, as well as data acquisition, data transmission, PC Data display technology. Background technique [0002] A traditional short-period seismometer, such as a short-period feedback seismometer disclosed in the patent No. 200520000299.7, as shown in Figures 1 to 6, includes a three-point vibration pickup, a line system, and an instrument cover. The line system is a feedback line system, which is placed above the three-way vibration pickups, and the three-way vibration pickups are respectively installed on their respective small bottom plates, and the three small bottom plates are evenly distributed and fixed on the circular base, among which The one on the small bottom plate is the east-west horizontal vi...

Claims

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Application Information

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IPC IPC(8): G01V1/18G01H9/00
Inventor 李子恩邱键庭王伦乐
Owner 李子恩
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