(19)

(11)

EP 3 721 421 A1

(12)

(43) Date of publication: 14.10.2020 Bulletin 2020/42 (21) Application number: 18822502.3 (22) Date of filing: 01.12.2018

(51) International Patent Classification (IPC):  G08B 21/02(2006.01) (86) International application number: PCT/IB2018/059548 (87) International publication number: WO 2019/111124 (13.06.2019 Gazette 2019/24)

(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: 05.12.2017 IT 201700140027 (71) Applicant: Upgrading Srl 47121 Forli (IT)	(72) Inventor: ZITARELLI, Alessandro 47121 Forli (IT) (74) Representative: Busca, Andrea  Via Valle, 20 47854 Monte Colombo (RN) 47854 Monte Colombo (RN) (IT)