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 operation

Info

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Withdrawn
Application number
FR7823958A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7823958A priority Critical patent/FR2433796A1/fr
Publication of FR2433796A1 publication Critical patent/FR2433796A1/fr
Withdrawn legal-status Critical Current

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.
FR7823958A 1978-08-17 1978-08-17 Luminous safety barrier protecting level crossing - has feedback from receiver causing oscillation to prevent inadvertent operation Withdrawn FR2433796A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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