A Method for In Situ Testing and Calibration of Moving-Coil Geophones

Ran Zeng; Yu Jiang Zhao; Jun Lin

doi:10.4028/www.scientific.net/AMR.732-733.1188

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 732-733A Method for In Situ Testing and Calibration of...

A Method for In Situ Testing and Calibration of Moving-Coil Geophones

Abstract:

A new method for measuring and identifying characteristic parameters of moving-coil geophones is proposed in this paper, where sine sweeping signal is considered as the electric excitation instead of the traditional vibrational excitation. A mathematical model of moving-coil geophone is constructed and the frequency response of 6-parameter is obtained in this paper. Using the expression as the objective function for fitting measured amplitude-frequency curve, geophones characteristic parameters are obtained. Finally, verification test is performed and the factors affecting measure accuracy are analyzed. The experimental results indicate that the presented method is suitable for production and maintenance, especially for in-situ calibration of geophones. This work provides a new way to design and manufacture portable geophone parameter testers.

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Periodical:

Advanced Materials Research (Volumes 732-733)

Pages:

1188-1192

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.732-733.1188

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Online since:

August 2013

Authors:

Ran Zeng, Yu Jiang Zhao, Jun Lin

Keywords:

Characteristic Parameter, Electric Sine Sweeping Exciting, Frequency Response, Geophone, Least Square Curve Fitting

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References

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