(19)
(11) EP 0 370 544 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.12.1990 Bulletin 1990/50

(43) Date of publication A2:
30.05.1990 Bulletin 1990/22

(21) Application number: 89202722.8

(22) Date of filing: 26.10.1989
(51) International Patent Classification (IPC)5: G08G 1/04
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 21.11.1988 IT 2267288

(71) Applicant: PHILIPS S.p.A.
20124 Milano (IT)

(72) Inventor:
  • Vernaleone, Antonio
    I-20159 Milano (IT)

(74) Representative: Mittler, Enrico et al
c/o Marchi & Mittler s.r.l. Viale Lombardia, 20
20131 Milano
20131 Milano (IT)


(56) References cited: : 
   
       


    (54) Traffic survey sensor


    (57) A traffic survey sensor suitable for being located in a position above the surface to be controlled, say, with the use of a gate (1), is constituted by a radiation transmitter (2) and by a radiation receiver (5) arranged and oriented so that a radiation (8) emitted by transmitter (2) arrives at a pre-set point (9) of the surface to be controlled and is from here partially reflected towards receiver (5) so as to obtain by the reflected radiation (14) an effect on receiver (5) which may cease with the passage of a vehicle.







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