Structural health monitoring

ESSEBI is integrating MonoDAQ-E-gMeter triaxial MEMS accelerometers in permanent bridge monitoring systems.

»We are very pleased with the noise performance of the gMeter which allow us to perform operational modal analysis. The ease of use of the total solution together with DEWESoft software is very important to us as it is completely plug and play.« – Giorgio Sforza, ESSEBI Srl

Learn more: Bridge monitoring with MonoDAQ-E-gMeter


  • Triaxial MEMS accelerometer
  • Distributable 50 m node-to-node
  • Extremely low noise

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Which parameters are measured?

Low levels of vibration need to be measured which requires an accelerometer with extremely low noise. Even though low frequency is of interest, small changes in the frequency of vibration must be possible to detect.

What equipment is used?

Due to permanent monitoring requirements on many measurement points accross the structure, the affordability of such a solution is extremely important. MEMS technology turns out to be mature enough at this point and an ideal choice for the demanding application. MonoDAQ-E-gMeter builds on the flexibility of the MonoDAQ-E product line (EtherCAT connectivity, 50 m module-to-module distance, single network cable, up to 48 V power supply, DEWESoft software) and includes a triaxial low-noise precision MEMS accelerometer that is comparable in performance to the special seismic accelerometers.
Advanced engineering methods including signal filtering, integration to velocities and displacements, frequency domain analysis and complex statistics can be implemented inside DEWESoft software with low set-up effort and no special programming skills. The same is true for exporting to a database, 3rd party software format or sending the data using protocols such as OPC UA.

What is structural health monitoring?

Structural health monitoring is an ongoing process of monitoring the mechanical state of structures. Disasters such as Genoa bridge collapse can be prevented using permanent stuctural health monitoring systems.