Abstract
This paper reports on the design, simulation and hardware implementation of a force balance geophone comprising a high order ΣΔM with the proportional-integral-derivative (PID) feedback loop. The system is simulated and analyzed by Simulink modeling, and obtains a low-frequency and stable system. The prototype engages a conventional low cost 4.5 Hz SM-6 geophone cascaded by two distributed feedback (DF) electronic integrators for high-order noise shaping. Our resulting force balance geophone confirms an extended bandwidth to 0.16 Hz and a simulated NEA of 17 ng/√Hz. These performances shows its potential for highly effective and low-cost seismic exploration.
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Zhang, X., Li, X., Wang, T., Xiao, W. (2021). Design of a Force Balance Geophone Utilizing Bandwidth Extension and Data Acquisition Interface. In: MacIntyre, J., Zhao, J., Ma, X. (eds) The 2020 International Conference on Machine Learning and Big Data Analytics for IoT Security and Privacy. SPIOT 2020. Advances in Intelligent Systems and Computing, vol 1283. Springer, Cham. https://doi.org/10.1007/978-3-030-62746-1_1
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DOI: https://doi.org/10.1007/978-3-030-62746-1_1
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