Geobit is exhibiting at HAGI-IAGI-IAFMI-IATMI Joint Convention 2019

Oct 12, 2019 | News

GEObit is exhibiting at HAGI-IAGI-IAFMI-IATMI Joint Convention 2019 in Yogyakarta, Indonesia, 25 – 28 November, the biggest scientific geoscience event in Indonesia. GEObit staff will also give a 45 min presentation, including a 15 min Q&A session, entitled, “High-performance cost effective seismic instruments and monitoring solutions from GEObit-instruments”

GEObit provides high sensitivity wide-band and near broad-band seismic sensors, surface or borehole type, and high dynamic range, low power 32bit ADC data loggers with local data storage and real-time telemetry over seedlink protocol. We are focusing on low power and cost-efficient solutions so we provide to our customer seismic networks with low installation and maintenance costs. Our instruments are ideal for local and regional seismicity and micro-seismicity monitoring and for seismic events such as those induced by unconventional hydrocarbon extraction. Our high fidelity data loggers ensure that these signals are recorded with the highest resolution and timing accuracy.

Together with Exact, our Indonesia representative, we welcome you to visit us at our booth, #A-1, to meet our team and learn about our new upcoming instruments and technologies. We will also be available to answer your questions.

More information about HAGI-IAGI-IAFMI-IATMI Joint Convention 2019 may be found here.

India roadshow & training

Oct 1, 2019 | News

India Roadshow 2019

8 - 18 October

Geobit’s India distributor, Pan India Consultants Pvt. Ltd, is organizing the meetings, presentations and training sessions for 2019 roadshow.

From 8 to 18 October, GEObit team is visiting India for scheduled meetings with clients, training sessions and presentations.

Geobit will present new developments, new instruments and smart networking implementation.

Geobit’s India distributor, Pan India Consultants Pvt. Ltd, is organizing the meetings, presentations and training sessions.

GEObit is always next to the customer by providing complete after-sales support and on-site installation/maintenance training. Geobit ‘s clients are always satisfied deploying GEObit seismic networks and recording high-quality data.

Pay less, get more!

Sep 17, 2019 | News

GEOtiny20

GEObit introduces the world’s lowest price, compact digital seismometer which integrates seismic and acceleration sensor, 24bit digitizer, local data storage and Seedlink Server for data telemetry. Now equiped with 20 sec sensor!

3 components seismic sensor
Low power consumption
Cost affordable design
Only 130mm D / 155mm H
Integrated 24bit digitizer
Embedded Seedlink Server
Realtime Telemetry and Local Storage
MiniSeed data format
Linux open source OS
Web Interface Menu
SSH, SFTP,Telnet
Modular seismic sensor design
Near Broad Band sensor 20s to 50Hz
Customized Sensor Corner Frequency
High Sensitivity 1500V/m/s
Operation Range: -20 +70 C
Waterproof IP67 Aluminum Case

GEOtiny20 Compact Digital Seismometer

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GEOtiny20 is a compact miniature digital seismometer that integrates three seismic and three acceleration channels. It supports high-resolution 24bit digitizer, embedded linux OS and GPS or NTP timing. Seedlink server ensures reliable real-time data telemetry while large storage volume ensures long period local data recording. The instrument has very low power consumption so it can operated by getting power from a small 12Vdc battery. Due to its small size provides the ability to be buried underground. Modular sensor interface allows the user to select between a variety of sensor types and frequency corners (20sec, 10sec, 5sec, 2sec, 1sec, 2Hz, 4,5Hz), thus covering the short period and wide-band seismic range. Design simplicity is a great advantage and it is reflected in the price which is the only fraction of the common commercial seismometers. The user is able to deploy even 100% more units than using common seismometers at the same cost.

Geobit collaborates with the University of Patras for innovative SHM solutions

Aug 22, 2019 | News

A group of researchers, including graduate and undergraduate students of the University of Patras, Department of Civil Engineering [1], under the coordination and supervision of Prof. A. Dimas [2], developed a physical model of a floating offshore wind turbine generator in geometrical scale of 1:100 (Fig. 1). The coupled hydrodynamic and structural behavior of the model at stormy seas, under operational and parked conditions, was tested in the Wave Basin of the Hydraulic Engineering Laboratory of the Department [3], which is equipped with a paddle wavemaker. Several sea conditions were tested corresponding to wind strength up to 12 in the Beaufort scale.

GEObit-instruments designed and provided all the hardware to measure, monitor and record instantaneous acceleration at the top and at the base of the turbine pylon.

Picture 1

The GEObit SRI32S data-logger

Picture 2

The GEObit SM1500 acceleration sensor

Picture 3

The floating wind turbine physical model in the Wave Basin

Experimental Configuration

Two GEObit SM1500 [4] sensors (Fig. 3) combined with SRi32S [5] data-loggers (Fig. 1) were used for the acceleration monitoring.

The SM1500 sensors had to be modified to enable their attachment to the turbine model. The sensing elements were placed on ring PCB boards (Fig. 4) and the sensor electronics were housed separately into the typical SM1500 enclosure (Fig. 5). Extra attention was paid to create lightweight sensing parts and connection cables for avoiding add extra weight and tense to the model. Three acceleration elements were orthogonally placed on each ring; therefore, all axes were monitored at the top and at the bottom (sea level).

The acceleration signal from the modified accelerometers was recorded by two high-resolution SRi32S dataloggers (Fig. 6). Real-time signal plot was obtained at the Laboratory’s computer, so the researchers were able to monitor in real time the effect of the waves on the turbine model (Fig. 7).

In addition, one wave gauge at the seaward side of the wind turbine model (Fig. 3) was continuously measuring the free-surface elevation due to the incident waves.

Several regular and irregular wave conditions were reproduced in the Wave Basin in order to test the dynamic behavior of the floating offshore wind turbine under operational (wind speed less than 25 m/s) and parked (wind speed more than 25 m/s) conditions; the latter include severe wave conditions.

Picture 4

The GEObit SM1500 acceleration sensor upper ring

Picture 5

The GEObit SM1500 and SRi32S sensor – dataloggers

Picture 6

The wind turbine physical model and the GEObit acceleration recording system

Picture 7

Acceleration plot on the PC

Experiment Video

Acknowledgments

The following research team contributed to the successful implementation of this project:

Liras Vasilios, Undergraduate Student (Univ. Patras, Department of Civil Engineering)
Vavouraki Argiro, MSc Student (Univ. Patras, Department of Civil Engineering)
Galani Kostantina, Postdoctoral Research Associate (Univ. Patras, Department of Civil Engineering)
Dimou Ioannis, Laboratory Staff (Univ. Patras, Department of Civil Engineering)
Dimas Athanassios, Professor (Univ. Patras, Department of Civil Engineering)
Spiliotopoulos Athanasios, Electrical Engineer (GEObit-Instruments)
Germenis Nikos, MSc Electronics Engineer (GEObit-Instruments)

References

[1]: http://www.civil.upatras.gr/

[2]: http://www.civil.upatras.gr/en/Proswpiko/faculty/entry/DimasAthanasios/

[3]: http://www.hydraulics.civil.upatras.gr/en/Infrastructure/Egkatastaseis/WaveBasin/

[4]: https://geobit-instruments.com/accelerometers-strong-motion-sensors/

[5]: https://geobit-instruments.com/seedlink-digitizers-sri32/