(19)
(11) EP 0 281 033 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.05.1990 Bulletin 1990/22

(43) Date of publication A2:
07.09.1988 Bulletin 1988/36

(21) Application number: 88102903.7

(22) Date of filing: 26.02.1988
(51) International Patent Classification (IPC)4: G08B 13/18
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR LI LU NL SE

(30) Priority: 02.03.1987 IT 1954887

(71) Applicant: Campo, Michele
I-74100 Taranto (IT)

(72) Inventor:
  • Campo, Michele
    I-74100 Taranto (IT)

(74) Representative: Lecce, Giovanni 
Dott. Giovanni Lecce & C. S.r.l. Via G. Negri 10
20123 Milano
20123 Milano (IT)


(56) References cited: : 
   
       


    (54) Break sensor


    (57) Break sensor of electronic type composed of a circuit compris­ing the following six separate blocks, connected to one another: a detector circuit (A), an amplifier circuit (B), an analyzing circuit (C), an alarm signal timing circuit (D), an alarm sig­nal circuit (E) and a power circuit (F).
    The sensor functions like a reflection type photo-coupler, which, positioned in front of a reflecting surface not linked to it, permits any movement of said surface to be detected.







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