FR2801400B1 - Systeme de detection - Google Patents

Systeme de detection

Info

Publication number
FR2801400B1
FR2801400B1 FR0014808A FR0014808A FR2801400B1 FR 2801400 B1 FR2801400 B1 FR 2801400B1 FR 0014808 A FR0014808 A FR 0014808A FR 0014808 A FR0014808 A FR 0014808A FR 2801400 B1 FR2801400 B1 FR 2801400B1
Authority
FR
France
Prior art keywords
detection system
detection
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.)
Expired - Fee Related
Application number
FR0014808A
Other languages
English (en)
Other versions
FR2801400A1 (fr
Inventor
Paul David Townsend
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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
Priority claimed from GBGB9906208.5A external-priority patent/GB9906208D0/en
Priority claimed from GBGB9907321.5A external-priority patent/GB9907321D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of FR2801400A1 publication Critical patent/FR2801400A1/fr
Application granted granted Critical
Publication of FR2801400B1 publication Critical patent/FR2801400B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/187—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interference of a radiation field

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
FR0014808A 1999-03-17 2000-11-13 Systeme de detection Expired - Fee Related FR2801400B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9906208.5A GB9906208D0 (en) 1999-03-17 1999-03-17 Detection system
GBGB9907321.5A GB9907321D0 (en) 1999-03-29 1999-03-29 Detection system

Publications (2)

Publication Number Publication Date
FR2801400A1 FR2801400A1 (fr) 2001-05-25
FR2801400B1 true FR2801400B1 (fr) 2003-02-07

Family

ID=26315294

Family Applications (2)

Application Number Title Priority Date Filing Date
FR0014808A Expired - Fee Related FR2801400B1 (fr) 1999-03-17 2000-11-13 Systeme de detection
FR0014819A Pending FR2801401A1 (fr) 1999-03-17 2000-11-13 Systeme de detection

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR0014819A Pending FR2801401A1 (fr) 1999-03-17 2000-11-13 Systeme de detection

Country Status (2)

Country Link
FR (2) FR2801400B1 (fr)
GB (2) GB2361308B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2505896B (en) * 2012-09-13 2015-09-02 Mbda Uk Ltd Room occupancy sensing apparatus and method
EP2709080A1 (fr) * 2012-09-13 2014-03-19 MBDA UK Limited Appareil de détection d'occupation de pièce et procédé
CA2884160C (fr) 2012-09-13 2020-03-31 Mbda Uk Limited Appareil et procede de detection d'occupation de piece

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492136A1 (fr) * 1980-10-13 1982-04-16 Commissariat Energie Atomique Barriere inviolable de protection contre les intrusions
EP0093773A1 (fr) * 1981-11-19 1983-11-16 Minnesota Mining And Manufacturing Company Detecteur optique d'intrusions
DE3447131A1 (de) * 1984-12-22 1986-06-26 Telenot Electronic GmbH, 7080 Aalen Raumschutzanlage
DE3530646A1 (de) * 1985-08-28 1987-03-12 Telenot Electronic Gmbh Flaechensicherung
GB2217441A (en) * 1987-12-15 1989-10-25 Plessey Co Plc Alarm system for enclosures
EP0388352A1 (fr) * 1989-03-15 1990-09-19 Elesta Ag Elektronik Dispositif pour barrière optique à une seule direction
US5142152A (en) * 1991-01-02 1992-08-25 The Stanley Works Sliding door sensor
US5233185A (en) * 1992-02-28 1993-08-03 Gmi Holdings, Inc. Light beam detector for door openers using fiber optics
US5326028A (en) * 1992-08-24 1994-07-05 Sanyo Electric Co., Ltd. System for detecting indoor conditions and air conditioner incorporating same
US5675648A (en) * 1992-12-24 1997-10-07 British Telecommunications Public Limited Company System and method for key distribution using quantum cryptography
WO1996006491A1 (fr) * 1994-08-18 1996-02-29 British Telecommunications Public Limited Company Cryptographie quantique
US5886307A (en) * 1997-06-23 1999-03-23 Otis Elevator Company Safety detection system for sliding doors

Also Published As

Publication number Publication date
GB2361058B (en) 2002-03-20
GB2361308A (en) 2001-10-17
GB2361058A (en) 2001-10-10
FR2801400A1 (fr) 2001-05-25
FR2801401A1 (fr) 2001-05-25
GB0029099D0 (en) 2001-03-21
GB2361308B (en) 2002-04-10
GB0029101D0 (en) 2001-03-21

Similar Documents

Publication Publication Date Title
DE60039455D1 (de) Abstandserfassungssystem
FR2782530B1 (fr) Systeme de construction
FR2797820B1 (fr) Systeme de debrayage
DE50114142D1 (de) Objektdetektionssystem
GB2350187B (en) Light detection system
FR2801438B1 (fr) Systeme de passage de cables
FR2785020B1 (fr) Systeme de demarreur-generateur
DE50004430D1 (de) Fahrzeugelektrik-konfigurationssystem
GB2355523B (en) Detection system
DE60024949D1 (de) Objekterkennungsgerät
FR2802271B1 (fr) Systeme hydraulique
DE50012718D1 (de) Steckverbindungssystem
DE50005621D1 (de) Hubschraubergetragene radaranlage
DE60009813D1 (de) Elektrooptische Systeme
FR2802175B1 (fr) Systeme de ventilation alternee
FR2792898B1 (fr) Systeme de freins
FR2795032B1 (fr) Systeme de freins
ATA189899A (de) Verbindungssystem
DE50009887D1 (de) Verbindungssystem
GB9928232D0 (en) Detection system
DE50009935D1 (de) Verbrennungsaussetzererkennung
FR2801400B1 (fr) Systeme de detection
FR2815715B1 (fr) Systeme de detection de fumee
FR2789356B1 (fr) Systeme de freinage
FR2818624B1 (fr) Systeme de manutention

Legal Events

Date Code Title Description
ST Notification of lapse