IT1258553B - Optical barrier for detection of objects in motion - Google Patents
Optical barrier for detection of objects in motionInfo
- 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
Links
- 230000004888 barrier function Effects 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 abstract 3
- 238000011156 evaluation Methods 0.000 abstract 1
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>
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) |
-
1992
- 1992-06-12 IT ITBO920240A patent/IT1258553B/en active IP Right Grant
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 |