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Advanced MEMS sensors for multiple applications; taking accuracy to the next level!
Home > Application > Seismic Sensing

Seismic Sensing

Ground motion can be measured as displacement, velocity, or acceleration. A mass spring sensor is used for all these measurements. Physical Logic’s in-plane bulk micromachining technology allows for realization of a proof mass spring design to achieve a noise density below 1 µg/√Hz for recommended ranges of ±2g and ±5g.   We open the possibility to compete with standard seismometers, allowing the construction of cost- and power-efficient seismic sensors.  The high precision seismic accelerometers are installed at a constant distance from each other in a tectonic border zone; this enables an instant earthquake wave’s detection and fast alert to nearby populations.
The particular direction of installation of two sensors is optimized to detect P-waves, which propagate parallel to the ground, or S-waves, which are perpendicular to the ground surface.

 

Physical Logic’s MEMS accelerometers are designed and manufactured in Israel. They are all ITAR free and the MAXL-OL-2002C is export controlled free.

Application Requirements

  • Wide dynamic range from ±2g to ±10g
  • Linear frequency response from DC to about 300 Hz
  • Low noise down to 1µg/√Hz level
  • Lightweight
  • Compact
  • High bias and scale factor stability
  • Supreme linearity performance
  • Operating temperatures -40ºC to +85ºC
  • Low power consumption

Applications

  • Oil Exploration
  • Directional Drilling
  • Earthquake Monitoring
  • Seismic Imaging
  • Intruder Detection

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