(19)

(11)

EP 3 895 140 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 19779506.5 (22) Date of filing: 04.10.2019

(51) International Patent Classification (IPC):  G08B 21/04(2006.01) G08B 19/00(2006.01) (52) Cooperative Patent Classification (CPC): G08B 21/0461; G08B 21/0492; G08B 21/0423; G08B 21/043; G08B 21/0469; G08B 19/00 (86) International application number: PCT/EP2019/076893 (87) International publication number: WO 2020/119977 (18.06.2020 Gazette 2020/25)

(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: 11.12.2018 EP 18211668 (71) Applicant: E.ON Digital Technology 30457 Hannover (DE)	(72) Inventor: ORD, Nicholas 30169 Hannover (DE) (74) Representative: Patentanwälte Bals & Vogel  Universitätsstrasse 142 44799 Bochum 44799 Bochum (DE)