(19)
(11) EP 2 112 047 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.01.2010 Bulletin 2010/04

(43) Date of publication A2:
28.10.2009 Bulletin 2009/44

(21) Application number: 09158205.6

(22) Date of filing: 20.04.2009
(51) International Patent Classification (IPC): 
B61L 23/04(2006.01)
(84) Designated Contracting States:
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 SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 21.04.2008 IT VR20080047

(71) Applicant: ACE snc
00181 Roma (IT)

(72) Inventors:
  • Platini, Massimo
    00178 Roma (IT)
  • Del Muto, Mauro
    00167 Roma (IT)

(74) Representative: Reniero, Cirillo Silvano 
Dr. Reniero & Associati S.r.l. Patents Piazza Bra, 28
37121 Verona
37121 Verona (IT)

   


(54) A method and installation for the measuring and extended monitoring of the stress state of a continuously welded rail (CWR)


(57) A method of measuring the stress state of at least one rail of a continuously welded rail, comprising the steps of:
prearranging:
- one pair or a plurality of pairs of sensors: each pair including a first sensor (2b) designed to operate in response to temperature variations and a second sensor (2a) suitable for operating in response to temperature variations and longitudinal deformation in a rail section;
- at least one emitter means (3) of at least one light energy beam arranged far from said one pair or plurality of pairs of sensors (2a, 2b);
- at least one interrogation control unit (4) designed to receive said light energy beam that has passed through/been reflected by said one pair or plurality of pairs of sensors;
- at least one unit (6) for processing the data collected by the control unit (4); and
- at least one optical fiber (5): designed to optically connect at least one emitter means (3) with each sensor (2a, 2b) and with said interrogation control unit (4);

energizing said at least one emitter means (3) in order to supply at least one light energy beam to one pair or to a plurality of pairs of sensors (2a, 2b); and
processing the stress state of the rail by the at least one processing unit (6), on the basis of the signals received by the interrogation control unit (4).







Search report