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Ultra Low Power, Standalone Wide-band Miniature Seismometer

This work presents a novel, state-of-the-art standalone digital seismometer designed for seismic monitoring applications. The instrument integrates a triaxial wide-band response sensor with a flat response from 10 s to 100 Hz and a, high quality MEMs accelerometer, and a high–dynamic-range digitizer (143 dB) based on 32-bit analog-to-digital converters (ADCs). The system supports selectable sampling rates ranging from 50 to 800 samples per second (sps). Data acquisition and instrument control are managed by a high-performance, low-power RISC processor running the proprietary GEObit operating system.

Seismic data are stored in GBT file format on a removable microSD card with a capacity of up to 64 GB. The storage medium is directly readable on both Linux and Windows operating systems, enabling straightforward data retrieval via simple file transfer. In addition, data can be accessed through Bluetooth or USB interfaces, which is particularly advantageous when the instrument is deployed in underground environments.

The onboard three-axis MEMS accelerometer with a dynamic range of 97 dB, allowing simultaneous recording of seismic and acceleration data. Precise time synchronization is ensured by a 32-channel GNSS receiver and a TCVCXO clock with 0.2ppm frequency stability.

The instrument is optimized for ultra-low power consumption, operating at approximately 0.29 W. This enables continuous operation for up to six months when powered by a 9 V, 170 Ah zinc–air battery. User interaction and system management are supported via Bluetooth and USB connections, with dedicated iOS and Android applications providing real-time data visualization, instrument configuration, state-of-health (SOH) monitoring, and full seismometer control.

The device has a compact form factor, with a diameter of 110 mm, a height of 65 mm, and a total weight of 450 g. It is housed in an IP68-rated enclosure fabricated from hard-anodized aluminum, ensuring robustness and suitability for operation in harsh environments, including underground deployments

Session: Network Seismology: Recent Developments, Challenges and Lessons Learned [Poster]

Type: Poster

Room: Exhibit Hall A+B

Date: 4/15/2026

Presentation Time: 08:00 AM (local time)

Presenting Author: Paul Friberg

Student Presenter: No

Invited Presentation: 

Poster Number: 17

Additional Authors