FR2214897B3 - - Google Patents

Info

Publication number
FR2214897B3
FR2214897B3 FR7401717A FR7401717A FR2214897B3 FR 2214897 B3 FR2214897 B3 FR 2214897B3 FR 7401717 A FR7401717 A FR 7401717A FR 7401717 A FR7401717 A FR 7401717A FR 2214897 B3 FR2214897 B3 FR 2214897B3
Authority
FR
France
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.)
Expired
Application number
FR7401717A
Other versions
FR2214897A1 (fr
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.)
Satt Elektronik AB
Original Assignee
Satt Elektronik 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 Satt Elektronik AB filed Critical Satt Elektronik AB
Publication of FR2214897A1 publication Critical patent/FR2214897A1/fr
Application granted granted Critical
Publication of FR2214897B3 publication Critical patent/FR2214897B3/fr
Expired 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
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
FR7401717A 1973-01-18 1974-01-18 Expired FR2214897B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7300716A SE369964B (fr) 1973-01-18 1973-01-18

Publications (2)

Publication Number Publication Date
FR2214897A1 FR2214897A1 (fr) 1974-08-19
FR2214897B3 true FR2214897B3 (fr) 1976-11-05

Family

ID=20316366

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401717A Expired FR2214897B3 (fr) 1973-01-18 1974-01-18

Country Status (6)

Country Link
US (1) US3901812A (fr)
CA (1) CA996769A (fr)
DE (1) DE2401906C3 (fr)
FR (1) FR2214897B3 (fr)
GB (1) GB1459928A (fr)
SE (1) SE369964B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053785A (en) * 1976-01-07 1977-10-11 General Signal Corporation Optical smoke detector with smoke effect simulating means
US4045675A (en) * 1976-07-12 1977-08-30 General Electric Company Solid state radiation detector system
US4560874A (en) * 1981-06-02 1985-12-24 Santa Barbara Research Center Reference channel for sensing optical contamination
FR2584497B1 (fr) * 1985-07-04 1988-07-08 Jaeger Procede et dispositif pour la detection du brouillard et son application a l'aide a la conduite d'un vehicule.
EP0208610B1 (fr) * 1985-07-04 1990-11-22 Jaeger Dispositif de détection de substances étrangères à travers une paroi et système d'aide à la conduite de véhicules ou d'aéronefs
FR2594557B1 (fr) * 1986-02-17 1988-06-10 Jaeger Dispositif de detection de substances etrangeres a travers une paroi et systeme d'aide a la conduite de vehicules ou d'aeronefs
US4814628A (en) * 1987-03-20 1989-03-21 Precitronic Gesellschaft Fuer Feinmechanik Und Electronic Mbh Arrangement for the transmission of laser light with reference source for backscatter obstruction detection
FR2619919B1 (fr) * 1987-09-01 1990-01-19 Jaeger Dispositif de mesure de visibilite dans un milieu turbide
FR2626076B1 (fr) * 1988-01-19 1990-12-21 France Etat Dispositif destine a la detection des variations de transparence d'une atmosphere a controler
FR2632724B1 (fr) * 1988-06-14 1990-09-14 Univ Lille Flandres Artois Procede et dispositif de mesure de la visibilite a travers un milieu d'opacite variable
GB9212060D0 (en) * 1992-06-04 1992-07-22 Appleby David Obscuration sensor
US5663710A (en) * 1995-07-18 1997-09-02 Jaycor Backscatter-type visibility detection
US6330519B1 (en) 1998-11-19 2001-12-11 Sentec Corporation Visibility sensor system
CN100357726C (zh) * 2005-02-07 2007-12-26 北京交通大学 一种大气低能见度的测量方法和装置
JP2007276704A (ja) * 2006-04-10 2007-10-25 Denso Corp 照明制御システム
FR2919726B1 (fr) * 2007-08-03 2009-11-20 Valeo Vision Procede de detection d'une gerbe d'eau a l'arriere d'un vehicule
US11255781B2 (en) * 2019-05-20 2022-02-22 Lite-On Electronics (Guangzhou) Limited Visibility meter, street light device and operation method thereof
TWI750520B (zh) * 2019-05-20 2021-12-21 大陸商光寶電子（廣州）有限公司 能見度儀、能見度量測方法和路燈裝置及其操作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6713063A (fr) * 1967-09-25 1969-03-27
FR1598834A (fr) * 1968-12-27 1970-07-06
DE1914655B2 (de) * 1969-03-22 1972-05-18 Sick, Erwin, 8021 Icking Optisches zweistrahlmessgeraet
CH520990A (de) * 1970-12-21 1972-03-31 Cerberus Ag Rauchdetektor

Also Published As

Publication number Publication date
US3901812A (en) 1975-08-26
GB1459928A (en) 1976-12-31
DE2401906A1 (de) 1974-09-12
FR2214897A1 (fr) 1974-08-19
DE2401906C3 (de) 1979-07-26
DE2401906B2 (de) 1978-11-16
CA996769A (en) 1976-09-14
SE369964B (fr) 1974-09-23

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