Articles | Volume 15, issue 1
https://doi.org/10.5194/jsss-15-23-2026
https://doi.org/10.5194/jsss-15-23-2026
Feature article
 | 
16 Feb 2026
Feature article |  | 16 Feb 2026

Towards exclusive use of SI units in sensor systems

Joaquín Valdés and Héctor Manuel Laiz

Related authors

On non-SI units accepted for use with the SI in a digital system of units
Joaquín Valdés
J. Sens. Sens. Syst., 13, 25–29, https://doi.org/10.5194/jsss-13-25-2024,https://doi.org/10.5194/jsss-13-25-2024, 2024
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Cited articles

BIPM: SI Brochure. The International System of Units (SI), 9th edn. 2019 (revised in August 2025), International Bureau of Weights and Measures, https://doi.org/10.59161/AUEZ1291, 2019. 
BIPM: General Conference on Weights and Measures: 27th meeting of the CGPM – Proceedings (15–18 November 2022), https://www.bipm.org/documents/20126/234853367/CGPM2022/db61a371-f046-c7b4-a860-80bb798096b6 (last access: 12 December 2025), 2022a. 
BIPM: Joint Statement of Intent: On the digital transformation in the international scientific and quality infrastructure, Joint Statement of Intent – Digital Transformation, 30 March 2022, International Bureau of Weights and Measures, https://www.bipm.org/en/liaison/digital-transformation (last access: 12 December 2025), 2022b. 
BIPM: Forum on Metrology and Digitalization (FORUM-MD): Report of the 1st meeting (7–8 March 2024) to the International Committee for Weights and Measures, International Bureau of Weights and Measures, https://www.bipm.org/en/committees/fo/forum-md/publications (last access: 12 December 2025), 2024. 
CIPM: Decision CIPM/108-28, International Bureau of Weights and Measures, https://www.bipm.org/en/committees/ci/cipm/outcomes (last access: 12 December 2025), 2019. 
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Short summary
Humans continue to use various units of measurement that are outside the internationally accepted System of Units (SI). This creates confusion that machines are unable to overcome. In the future, machines and sensor systems feeding data to those machines are expected to operate exclusively using the SI. This requires an internationally authoritative database for converting the non-SI units that humans enter to SI units at the level of the human–machine interface or human–sensor interface.
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