Lumedyne's AcXel accelerometer is the first MEMS accelerometer to utilize our patented electro-optical technology. This new optical approach to MEMS accelerometers allows performance not possible using traditional capacitive techniques.

Some of the benefits of the AcXel accelerometer include:

  • Extreme Sensitivity: Max Transduction values of 75 Micro-Amps/Nanometer
  • High Signal to Noise Ratio: Greater than 20 bits of resolution
  • Low Bias Stability: Less than 50 µg
  • Improved Low Frequency Response: True DC response

Lumedyne's technique has measured displacements of the proof-mass as small as 10e-15 meters (10 femto-meters), or approximately the diameter of a proton.  This is the best known value for smallest displacement ever measured by a MEMS device.

Applications:

Seismic Imaging (Oil Exploration): 

Seismic imaging is a technique used to explore for oil deposits that is analogous to an ultrasound of the earth.  Accelerometers offer improved performance over geophones, the traditional seismic imaging sensor by providing the lowest noise floor available over a wider frequency range.

 

 

Industrial & Structural Monitoring:

Accelerometers are used to monitor the health of machines and buildings by measuring their natural vibrations. By doing so, engineers can determine when important maintenance or repairs need to take place.  Applications requiring higher performance accelerometers typically employ larger, more expensive piezoelectric accelerometers because traditional MEMS based accelerometers do not deliver the required performance in terms of resolution and/or frequency response. Lumedyne's technology outperforms piezoelectric accelerometers while offering the benefits of MEMS technology.