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http://hdl.handle.net/2122/12311
Authors: | Vitale, Giovanni* Greco, Luca* D'Alessandro, Antonino* Scudero, Salvatore* |
Title: | Bandwidth extension of a 4.5 Hz geophone for seismic monitoring purpose | Issue Date: | 2018 | DOI: | 10.1109/EE1.2018.8385253 | Keywords: | —Geophone; seismic monitoring; bandwidth extension; force balance circuit | Abstract: | The devices usually employed for seismic monitoring have some limitations that prevent a complete characterization of the seismic signals, especially at the low frequency. In order to overcome such limitations we propose a relatively easy and low-cost device able to extend the bandwidth of a commercial 4.5 Hz geophone. The system basically consists in a operational amplifier with negative feedback, a buffer amplifier, and a numerical filter. The system has been specifically designed for the selected geophone, however, the idea can be easily applied to other similar devices. The low-cost of the system if compared to the manufactured expensive broadband sensor enables large-scale and/or high-density application with contained cost. |
Appears in Collections: | Conference materials |
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