FR2370290A1 - Dispositif pour la mesure de la visibilite - Google Patents

Dispositif pour la mesure de la visibilite

Info

Publication number
FR2370290A1
FR2370290A1 FR7730977A FR7730977A FR2370290A1 FR 2370290 A1 FR2370290 A1 FR 2370290A1 FR 7730977 A FR7730977 A FR 7730977A FR 7730977 A FR7730977 A FR 7730977A FR 2370290 A1 FR2370290 A1 FR 2370290A1
Authority
FR
France
Prior art keywords
receiver
radiation source
measuring
viewing range
measuring visibility
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.)
Granted
Application number
FR7730977A
Other languages
English (en)
Other versions
FR2370290B1 (fr
Inventor
Anders Persson
Sven-Erik Soderstrom
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of FR2370290A1 publication Critical patent/FR2370290A1/fr
Application granted granted Critical
Publication of FR2370290B1 publication Critical patent/FR2370290B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/538—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke for determining atmospheric attenuation and visibility
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Ce dispositif pour la mesure de la visibilité est du type de celui décrit dans le brevet antérieur 75 10594 de la demanderesse. Il contient une unité émettrice-réceptrice 10, ainsi qu'un certain nombre de réflecteurs dont chacun est placé à une distance de mesure déterminée. Il comprend, pour chaque portée de vision, un récepteur qui est disposé à une certaine distance de la source de rayonnement, et chaque récepteur est raccordé à la source de rayonnement pour lui transmettre les signaux qui commandent l'émission de la lumière dans le tronçon de portée de vision correct.
FR7730977A 1976-11-03 1977-10-14 Dispositif pour la mesure de la visibilite Granted FR2370290A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7612218A SE404848B (sv) 1976-11-03 1976-11-03 Anordning for siktmetning

Publications (2)

Publication Number Publication Date
FR2370290A1 true FR2370290A1 (fr) 1978-06-02
FR2370290B1 FR2370290B1 (fr) 1982-09-17

Family

ID=20329324

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730977A Granted FR2370290A1 (fr) 1976-11-03 1977-10-14 Dispositif pour la mesure de la visibilite

Country Status (6)

Country Link
US (1) US4200398A (fr)
JP (1) JPS5357884A (fr)
DE (1) DE2746905A1 (fr)
FR (1) FR2370290A1 (fr)
GB (1) GB1587429A (fr)
SE (1) SE404848B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE427501B (sv) * 1982-03-30 1983-04-11 Foerenade Fabriksverken Sett att meta en roks ir-kamouflerande formaga
US4614429A (en) * 1984-05-14 1986-09-30 The United States Of America As Represented By The Secretary Of The Air Force Atmospheric contrast transmittance monitor
US6853453B2 (en) * 1999-03-12 2005-02-08 Regents Of The University Of Minnesota Video camera-based visibility measurement system
US7016045B2 (en) * 1999-03-12 2006-03-21 Regents Of The University Of Minnesota Video camera-based visibility measurement system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572949A (en) * 1964-10-14 1971-03-30 Acec An installation for measuring the maximum visual distance in the fog including a series of signal lights
FR2114462A5 (fr) * 1970-11-16 1972-06-30 Asea Ab
FR2261542A1 (en) * 1974-02-20 1975-09-12 Aerazur Constr Aeronaut Aircraft guidance system for landing strip - determines real visibility at all given points in predetermined spatial domain
FR2266895A1 (fr) * 1974-04-08 1975-10-31 Asea Ab

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241639B (de) * 1964-07-18 1967-06-01 Impulsphysik Gmbh Verfahren und Vorrichtung zur Bestimmung der Sichtweite auf Landebahnen
US3985452A (en) * 1974-04-30 1976-10-12 Allmanna Svenska Elektriska Aktiebolaget Arrangement for determining visibility in the glide path of an aircraft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572949A (en) * 1964-10-14 1971-03-30 Acec An installation for measuring the maximum visual distance in the fog including a series of signal lights
FR2114462A5 (fr) * 1970-11-16 1972-06-30 Asea Ab
FR2261542A1 (en) * 1974-02-20 1975-09-12 Aerazur Constr Aeronaut Aircraft guidance system for landing strip - determines real visibility at all given points in predetermined spatial domain
FR2266895A1 (fr) * 1974-04-08 1975-10-31 Asea Ab

Also Published As

Publication number Publication date
SE7612218L (sv) 1978-05-04
DE2746905A1 (de) 1978-05-11
FR2370290B1 (fr) 1982-09-17
GB1587429A (en) 1981-04-01
JPS6159455B2 (fr) 1986-12-16
JPS5357884A (en) 1978-05-25
SE404848B (sv) 1978-10-30
US4200398A (en) 1980-04-29

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