Sustainable & digital engineering Digital technology, electronics

CALDIRO: embedded non-contact vibration measurement system

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Laser vibration measurement systems require the use of mechanical supports, resulting in a limited range of applications and high costs.

Competitive advantages

  • Compactness (integrated system)
  • Robustness
  • Flexibility of use
  • Low-cost

Applications

Quality control:

  • Under real-life conditions
  • Under embedded conditions

Intellectual property

  • Patent

State of progress

Experimental proof of concept

Laboratory

Logo laboratoire LAAS CNRS

Description 

  • Based on self-mixing interferometry, the laser acts as light source, micro-interferometer and detector, resulting in an integrated, low-cost solution.
  • Coupled with an accelerometer measuring the displacement of the sensor itself, the device is insensitive to parasitic oscillation

Technical specifications 

  • Target: All
  • Target preparation required: No
  • Bandwidth: From 20 Hz to 40 KHz
  • Distance/Measurement range: 10 m
  • Measurement accuracy: 10 to 100 nanometres
  • In-depth analysis: No