Improving the Classical Geophone Sensor Element by Digital Correction

Rune Brincker, Thomas L. Lagö, Palle Andersen, Carlos Ventura

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Geophones are highly sensitive motion transducers that have been used by seismologists and geophysicists for decades. The conventional geophone's ratio of cost to performance, including noise, linearity and dynamic range is unmatched by advanced modern accelerometers. However, the problem of this sensor is that it measures velocity, and that the linear frequency range is limited to frequencies above the natural frequency, typically at 4-12 Hz. It is shown in this paper how the sensor signal can be digitally linearized 2 decades below the natural frequency obtaining a sensor that allows the user to measure displacement, velocity or acceleration with high sensitivity and large dynamic range.

Original languageEnglish
Title of host publicationConference Proceedings : IMAC-XXIII : A Conference & Exposition on Structural Dynamics
Number of pages9
PublisherSociety for Experimental Mechanics
Publication date2005
ISBN (Electronic)0912053895
Publication statusPublished - 2005
Externally publishedYes
EventThe International Modal Analysis Conference - Orlando, United States
Duration: 31. Jan 20053. Feb 2005
Conference number: 23

Conference

ConferenceThe International Modal Analysis Conference
Number23
CountryUnited States
CityOrlando
Period31/01/200503/02/2005

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  • Cite this

    Brincker, R., Lagö, T. L., Andersen, P., & Ventura, C. (2005). Improving the Classical Geophone Sensor Element by Digital Correction. In Conference Proceedings: IMAC-XXIII : A Conference & Exposition on Structural Dynamics Society for Experimental Mechanics.