Seismic Detection Using Mini Seismometer

摘要

The goal of this Phase 1 SBIR project is to develop a very small, versatile, rugged, low power, low noise, one or three-axis short-period seismometer. The total sensor size should be less than 1 cubic inch; and low power consumption and low sensor self noise below the USGS Low Earth Noise Model, with dynamic range at least 120 dB over a frequency band of 0.2 to 40 Hz. All commercially available high performance seismometers using various technologies are large, heavy and consume high power. The user must often face a difficult choice: use instruments with significantly lower performance characteristics, or reduce the size of the network. Our company, eentec, proposes a solution for this problem of designing a seismometer using a new technology of liquid inertial masses and electrochemical transducers. This overall approach will miniaturize a medium period seismometer while maintaining low self noise with low power consumption.