Metrological challenges in collaborative sensing: Applicability of digital calibration certificates

Tuukka Mustapää*, Pekka Nikander, Daniel Hutzschenreuter, Raine Viitala

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)
131 Downloads (Pure)


IoT systems based on collaborative sensor networks are becoming increasingly common in various industries owing to the increased availability of low-cost sensors. The quality of the data provided by these sensors may be unknown. For these reasons, advanced data processing and sensor network self-calibration methods have become popular research topics. In terms of metrology, the self-calibration methods lack the traceability to the established measurement standards of National Metrology Institutes (NMIs) through an unbroken chain-link of calibration. This problem can be solved by the ongoing digitalization of the metrology infrastructure. We propose a conceptual solution based on Digital Calibration Certificates (DCCs), Digital SI (D-SI), and cryptographic digital identifiers, for validation of data quality and trustworthiness. The data that enable validation and traceability can be used to improve analytics, decision-making, and security in industrial applications. We discuss the applicability and benefits of our solutions in a selection of industrial use cases, where collaborative sensing has already been introduced. We present the remaining challenges in the digitization and standardization processes regarding digital metrology and the future work required to address them.

Original languageEnglish
Article number4730
Pages (from-to)1-19
Number of pages19
JournalSensors (Switzerland)
Issue number17
Publication statusPublished - Sept 2020
MoE publication typeA1 Journal article-refereed


  • Digital calibration certificate
  • IoT-communication
  • Metrology
  • Sensor networks
  • Smart agents
  • Traceability


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