IT1258553B - Optical barrier for detection of objects in motion - Google Patents

Optical barrier for detection of objects in motion

Info

Publication number
IT1258553B
IT1258553B ITBO920240A ITBO920240A IT1258553B IT 1258553 B IT1258553 B IT 1258553B IT BO920240 A ITBO920240 A IT BO920240A IT BO920240 A ITBO920240 A IT BO920240A IT 1258553 B IT1258553 B IT 1258553B
Authority
IT
Italy
Prior art keywords
track
transmission unit
motion
optical barrier
objects
Prior art date
Application number
ITBO920240A
Other languages
Italian (it)
Inventor
Mario Ferri
Original Assignee
Control Card Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Control Card Srl filed Critical Control Card Srl
Priority to ITBO920240A priority Critical patent/IT1258553B/en
Publication of ITBO920240A0 publication Critical patent/ITBO920240A0/en
Priority to EP93100574A priority patent/EP0563516A3/en
Publication of ITBO920240A1 publication Critical patent/ITBO920240A1/en
Application granted granted Critical
Publication of IT1258553B publication Critical patent/IT1258553B/en

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Landscapes

  • Geophysics And Detection Of Objects (AREA)

Abstract

The optical barrier 1 detects objects in motion and in particular identifies vehicles moving along a track, and it comprises a transmission unit 4 placed at one side of the track and having a plurality of diodes 5 emitting infrared light, multiplexed and modulated at a predetermined frequency; a reception unit 6 placed at an opposite side of the track and having a plurality of infrared photoreceivers 7; and an electronic device 8 for managing the electric signals generated by the photoreceivers 7. The apparatus 8 comprises means 31, 32 of evaluating the degraded functionality of the transmission unit 4, and two signal units 33, 16 to indicate the functionality of the transmission unit 4 and of the barrier, activated by the evaluation means 31, 32. <IMAGE>
ITBO920240A 1992-01-17 1992-06-12 Optical barrier for detection of objects in motion IT1258553B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITBO920240A IT1258553B (en) 1992-06-12 1992-06-12 Optical barrier for detection of objects in motion
EP93100574A EP0563516A3 (en) 1992-01-17 1993-01-15 Optical barrier for detecting moving objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO920240A IT1258553B (en) 1992-06-12 1992-06-12 Optical barrier for detection of objects in motion

Publications (3)

Publication Number Publication Date
ITBO920240A0 ITBO920240A0 (en) 1992-06-12
ITBO920240A1 ITBO920240A1 (en) 1993-12-12
IT1258553B true IT1258553B (en) 1996-02-27

Family

ID=11338374

Family Applications (1)

Application Number Title Priority Date Filing Date
ITBO920240A IT1258553B (en) 1992-01-17 1992-06-12 Optical barrier for detection of objects in motion

Country Status (1)

Country Link
IT (1) IT1258553B (en)

Also Published As

Publication number Publication date
ITBO920240A1 (en) 1993-12-12
ITBO920240A0 (en) 1992-06-12

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950629