Detection of seismic wave grating harmonic oscillator theory and methods

Title: Detection of seismic wave grating harmonic oscillator theory and methodsAuthor: Li ShuqingDegree-granting units: Tianjin UniversityKeywords: grating harmonic oscillator;; seismic waves;; moiré;; data reconstruction;;Summary:Seismic exploration, seismic exploration equipment received by the geophone seismic signal. Geophone performance good or bad,
Direct impact on the quality of seismic Magnetic lifter  records and seismic data interpretation. The subject in-depth analysis and study of earthquakes Potter and the existing ground
Shock wave detection method based on the harmonic oscillator for raster-sensitive components, completed the test grating seismic wave harmonic oscillator theory, methods
Research and test equipment design and experimental study. Include:1 The design of the seismic waves detected grating harmonic oscillator device. Main
Including structural design, grating oscillator design, optical system design, the damping system design. The use of lightweight aluminum alloy shell, grating
Harmonic oscillator "spring - mass system" from the http://www.999magnet.com/products/131-magnetic-lifter main grating, horizontal limit vibration damping sheet and tube form. Grating harmonic oscillator with aluminum grating support
The main frame fixed grating, limited by a horizontal spring oscillator functions connected with the case, pick up the measured seismic signal. Optical system by the source system
System, indicating grating and optical receiver components. Optical system uses white light lamp, a collimating lens, grating surface to parallel rays through the grating
Vice produce moiré.(2) of the damping system, in-depth study. The use of eddy current damping principle, the damping cylinder and the harmonic oscillator
Grating integrated stent design, magnet is fixed on the damping associated with the shell on the regulatory agencies, as necessary to accurately adjust the damping ratio
Size to achieve a flexible system damping continuously adjustable.3 of the raster-based technology to improve system sensitivity multiplier method.
Using different parameters and instructions grating grating composed of the main oscillator, indicating grating using moiré gratings in order to improve the contrast, the main
Coarse grating amplitude grating.4 to achieve a grating vibration detection system composition and signal reproduction, the grating sensors, hardware, and identified to
Sub circuits, PIC microcontroller unit and computer segments combined, constitute a test system, using software to reproduce the measured vibration signals
, And completed grating vibration system performance analysis.5 Detection of grating harmonic oscillator seismic devices were studied. Light
Gate performance geophone detector test system performance analysis is to ensure that the necessary means, this design of the grating static digital seismic detector
And dynamic characteristics of the test system for detection of seismic wave grating harmonic oscillator device performance testing and analysis. In order to verify that the device can detect
Enough to reproduce the true seismic signal, this signal reconstruction completed the test with the existing seismic acquisition system and station interface technology.In this study,
Results can be used for oil, mineral, geothermal, hydro-geological and other engineering and seismic exploration. Especially used in high-precision, high-resolution
Geophysical exploration.Degree Year: 2009