(19)
(11) EP 1 151 279 A1

(12)

(43) Date of publication:
07.11.2001 Bulletin 2001/45

(21) Application number: 99957747.1

(22) Date of filing: 19.11.1999
(51) International Patent Classification (IPC)7G01N 21/63, G01M 11/00
(86) International application number:
PCT/AU9901/028
(87) International publication number:
WO 0037/925 (29.06.2000 Gazette 2000/26)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 18.12.1998 AU PP780898
03.05.1999 AU PP012699

(71) Applicant: FUTURE FIBRE TECHNOLOGIES PTY.LTD.
Rowville, VIC 3178 (AU)

(72) Inventors:
  • TAPANES, Edward, E.
    Glen Waverley, VIC 3150 (AU)
  • GOODE, Jason, R.
    Rowville, VIC 3178 (AU)
  • KATSIFOLIS, Jim
    South Yarra, VIC 3141 (AU)

(74) Representative: Lhuillier, René et al
Cabinet Lepeudry,43, rue de la Brèche-aux-Loups
75012 Paris
75012 Paris (FR)

   


(54) APPARATUS AND METHOD FOR MONITORING A STRUCTURE USING A COUNTER-PROPAGATING SIGNAL METHOD FOR LOCATING EVENTS