Traceability of digital 3-axis MEMS accelerometer networks is often disregarded by manufacturers and end-users due to the lack of suitable calibration procedures and to the complexity in managing a large number of sensitivities. To overcome these problems, two traceable independent accelerometer calibration systems and methods using inclined planes have been recently developed by a national metrology institute and a calibration laboratory at an uncertainty level of 2 %. In this work, main and transverse magnitude sensitivities of 25 digital 3-axis MEMS accelerometers, part of a sensor network prototype conceived for structural monitoring at low-frequencies, are evaluated at three low-frequencies by the two laboratories. Comparison shows compatible results. Furthermore, a method for decreasing the number of sensitivity and uncertainty data to be managed by sensor network end-users is also proposed. It is shown that its number can be reduced preserving the required traceability at the expense of higher uncertainties up to 4.5 %.

Metrological traceability of a digital 3-axis MEMS accelerometers sensor network

D'Emilia G.;Gaspari A.;Natale E.;
2021-01-01

Abstract

Traceability of digital 3-axis MEMS accelerometer networks is often disregarded by manufacturers and end-users due to the lack of suitable calibration procedures and to the complexity in managing a large number of sensitivities. To overcome these problems, two traceable independent accelerometer calibration systems and methods using inclined planes have been recently developed by a national metrology institute and a calibration laboratory at an uncertainty level of 2 %. In this work, main and transverse magnitude sensitivities of 25 digital 3-axis MEMS accelerometers, part of a sensor network prototype conceived for structural monitoring at low-frequencies, are evaluated at three low-frequencies by the two laboratories. Comparison shows compatible results. Furthermore, a method for decreasing the number of sensitivity and uncertainty data to be managed by sensor network end-users is also proposed. It is shown that its number can be reduced preserving the required traceability at the expense of higher uncertainties up to 4.5 %.
File in questo prodotto:
File Dimensione Formato  
pubblicato.pdf

non disponibili

Tipologia: Documento in Versione Editoriale
Licenza: Creative commons
Dimensione 5.05 MB
Formato Adobe PDF
5.05 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/175192
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 13
social impact