IT1258012B - Optical barrier of improved type for detection of objects in movement - Google Patents

Optical barrier of improved type for detection of objects in movement

Info

Publication number
IT1258012B
IT1258012B ITBO920020A ITBO920020A IT1258012B IT 1258012 B IT1258012 B IT 1258012B IT BO920020 A ITBO920020 A IT BO920020A IT BO920020 A ITBO920020 A IT BO920020A IT 1258012 B IT1258012 B IT 1258012B
Authority
IT
Italy
Prior art keywords
photoreceivers
objects
detection
movement
barrier
Prior art date
Application number
ITBO920020A
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 ITBO920020A priority Critical patent/IT1258012B/en
Publication of ITBO920020A0 publication Critical patent/ITBO920020A0/en
Priority to EP93100574A priority patent/EP0563516A3/en
Publication of ITBO920020A1 publication Critical patent/ITBO920020A1/en
Application granted granted Critical
Publication of IT1258012B publication Critical patent/IT1258012B/en

Links

Abstract

The barrier 1 comprises a transmission unit placed at one side of a track and having a plurality of infrared light emitting diodes 5 which are 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 apparatus 8 for managing the electric signals generated by the photoreceivers 7. The apparatus 8 comprises an electronic unit 14 for the automatic determination of a corresponding reference value Vf for each of the photoreceivers 7, for comparing the signals generated by the photoreceivers 7 with said reference value Vf, and for verifying said comparison so as to signal the condition of the barrier, whether free or blocked by an object. <IMAGE>
ITBO920020A 1992-01-17 1992-01-17 Optical barrier of improved type for detection of objects in movement IT1258012B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITBO920020A IT1258012B (en) 1992-01-17 1992-01-17 Optical barrier of improved type for detection of objects in movement
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
ITBO920020A IT1258012B (en) 1992-01-17 1992-01-17 Optical barrier of improved type for detection of objects in movement

Publications (3)

Publication Number Publication Date
ITBO920020A0 ITBO920020A0 (en) 1992-01-17
ITBO920020A1 ITBO920020A1 (en) 1993-07-17
IT1258012B true IT1258012B (en) 1996-02-20

Family

ID=11337936

Family Applications (1)

Application Number Title Priority Date Filing Date
ITBO920020A IT1258012B (en) 1992-01-17 1992-01-17 Optical barrier of improved type for detection of objects in movement

Country Status (1)

Country Link
IT (1) IT1258012B (en)

Also Published As

Publication number Publication date
ITBO920020A0 (en) 1992-01-17
ITBO920020A1 (en) 1993-07-17

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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: 19990128