FR2433796A1 - Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation - Google Patents
Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operationInfo
- Publication number
- FR2433796A1 FR2433796A1 FR7823958A FR7823958A FR2433796A1 FR 2433796 A1 FR2433796 A1 FR 2433796A1 FR 7823958 A FR7823958 A FR 7823958A FR 7823958 A FR7823958 A FR 7823958A FR 2433796 A1 FR2433796 A1 FR 2433796A1
- Authority
- FR
- France
- Prior art keywords
- feedback
- safety barrier
- electromagnet
- lamp
- lens
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
- F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
- F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Audible And Visible Signals (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Dispositif de barrage lumineux de sécurité utilisant un diapason rupteur de lumière associé à un récepteur photo-électrique, le faisceau lumineux constitue un élément du circuit d'entretien du diapason, la coupure du faisceau arrête le fonctionnement du diapason, un capteur électromécanique intéressé par une lame du diapason indique l'état de fonctionnement ou de non fonctionnement de celui-ci. La sécurité est obtenue par la largeur très étroite de la bande du filtre réalisé par le diapason.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7823958A FR2433796A1 (en) | 1978-08-17 | 1978-08-17 | Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7823958A FR2433796A1 (en) | 1978-08-17 | 1978-08-17 | Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2433796A1 true FR2433796A1 (en) | 1980-03-14 |
Family
ID=9211864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7823958A Withdrawn FR2433796A1 (en) | 1978-08-17 | 1978-08-17 | Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2433796A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE732993C (de) * | 1939-06-25 | 1943-03-17 | Paul Egon Weber | Lichtelektrische Einrichtung fuer Signalanlagen |
DE2005858A1 (de) * | 1970-02-10 | 1971-08-26 | Siemens Ag | Lichtschranke |
DE2455489A1 (de) * | 1974-11-23 | 1976-05-26 | Licentia Gmbh | Einrichtung zum schutz von objekten |
-
1978
- 1978-08-17 FR FR7823958A patent/FR2433796A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE732993C (de) * | 1939-06-25 | 1943-03-17 | Paul Egon Weber | Lichtelektrische Einrichtung fuer Signalanlagen |
DE2005858A1 (de) * | 1970-02-10 | 1971-08-26 | Siemens Ag | Lichtschranke |
DE2455489A1 (de) * | 1974-11-23 | 1976-05-26 | Licentia Gmbh | Einrichtung zum schutz von objekten |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |