(19)

(11)

EP 3 853 637 A1

(12)

(43) Date of publication: 28.07.2021 Bulletin 2021/30 (21) Application number: 19778566.0 (22) Date of filing: 09.09.2019

(51) International Patent Classification (IPC):  G01T 1/20(2006.01) (86) International application number: PCT/FI2019/050645 (87) International publication number: WO 2020/058566 (26.03.2020 Gazette 2020/13)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 19.09.2018 FI 20185780 (71) Applicant: Sensinite Oy 65200 Vaasa (FI)	(72) Inventor: ORAVA, Risto 00100 Helsinki (FI) (74) Representative: Väänänen, Janne Kalervo et al Vanarix Laaksolahdentie 74 02730 Espoo 02730 Espoo (FI)