(19)

(11)

EP 2 721 592 A1

(12)

(43) Date of publication: 23.04.2014 Bulletin 2014/17 (21) Application number: 12800040.3 (22) Date of filing: 14.06.2012

(51) International Patent Classification (IPC):  G08B 21/02(2006.01) G01S 5/00(2006.01) A01M 31/00(2006.01) G01S 19/19(2010.01) (86) International application number: PCT/FI2012/050610 (87) International publication number: WO 2012/172183 (20.12.2012 Gazette 2012/51)

(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 (30) Priority: 16.06.2011 FI 20115609 (71) Applicant: Tracker OY 90460 Oulunsalo (FI)	(72) Inventor: LOHI, Hannu FI-90820 Kello (FI) (74) Representative: Määttä, Jukka Tapani  Berggren Oy Ab Sepänkatu 20 90100 Oulu 90100 Oulu (FI)