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EP0696782B1 - Capteur optique de force compressive - Google Patents

Capteur optique de force compressive Download PDF

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Publication number
EP0696782B1
EP0696782B1 EP95112610A EP95112610A EP0696782B1 EP 0696782 B1 EP0696782 B1 EP 0696782B1 EP 95112610 A EP95112610 A EP 95112610A EP 95112610 A EP95112610 A EP 95112610A EP 0696782 B1 EP0696782 B1 EP 0696782B1
Authority
EP
European Patent Office
Prior art keywords
optical waveguide
light detector
layer
compressive force
light
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 - Lifetime
Application number
EP95112610A
Other languages
German (de)
English (en)
Other versions
EP0696782A1 (fr
Inventor
Peter Dr. Fasshauer
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.)
Marinitsch Waldemar
Original Assignee
Marinitsch Waldemar
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 Marinitsch Waldemar filed Critical Marinitsch Waldemar
Publication of EP0696782A1 publication Critical patent/EP0696782A1/fr
Application granted granted Critical
Publication of EP0696782B1 publication Critical patent/EP0696782B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/10—Mechanical actuation by pressure on floors, floor coverings, stair treads, counters, or tills

Definitions

  • Another possibility of periodic curvature of the Optical waveguide for example in EP 0 131 474 B1 is to use the optical fiber to wrap around a metallic helix that spirals with a constant pitch around the optical fiber is.
  • the contact mat compressive force lying on the helix on the optical fiber transmitted, which is periodically curved.
  • optical fibers with step profile commercially available fibers known under the name HCS (Hard Cladding Silica) can be used, which in addition to the necessary optical properties also have the necessary mechanical properties for use in the contact mat.
  • HCS Hard Cladding Silica
  • the above-mentioned period length l p of the profiles 3, 4 is still available with commercially available, inexpensive rubber profile mats which can be used without further ado, since there are no high requirements for an exactly adhering to the period length, as would be the case when using fibers with a gradient profile.
  • the training is therefore inexpensive overall.
  • the light source for example a laser diode
  • the optical waveguide namely the optical fiber 1
  • this light pulse travels through the optical fiber 1 to the output of the optical fiber 1, to which, for example, a photodiode is attached as the light detector.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (9)

  1. Capteur optique de force compressive comportant :
    un guide multimodal d'ondes lumineuses (1), qui est agencé dans une couche (2) formant des points de compression périodiques, couche sur laquelle la force compressive s'applique, et qui est courbé ou déformé périodiquement par la force compressive appliquée à cette couche,
    une source de lumière et un détecteur de lumière (5) entre lesquels le guide d'ondes lumineuses (1) est agencé, et
    un dispositif d'exploitation, qui exploite les signaux de sortie du détecteur de lumière (5) variant en fonction de la force compressive, caractérisé en ce que :
    le détecteur de lumière (5) couvre un angle d'ouverture à la sortie du guide d'ondes lumineuses (1), qui n'inclut que la partie du champ de rayonnement des modes de faible ordre, et en ce que le demi-angle d'ouverture (γo) du détecteur de lumière (5) se situe entre environ 0,8 et 1,2 arc sin AN, AN étant l'ouverture numérique du guide d'ondes lumineuses (1).
  2. Capteur selon la revendication 1, caractérisé en ce que le demi-angle d'ouverture (γo) du détecteur de lumière (5) se situe entre environ 12 et environ 18°.
  3. Capteur selon la revendication 2, caractérisé en ce que le demi-angle d'ouverture (γo) est de 15°.
  4. Capteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche (2) présente une structure périodique (3, 4) à l'intérieur sur au moins une face du guide d'ondes lumineuses (1) dans le sens longitudinal du guide d'ondes lumineuses (1).
  5. Capteur selon la revendication 4, caractérisé en ce que le guide d'ondes lumineuses (1) est une fibre optique, dont l'indice de réfraction entre l'âme et la gaine varie de manière étagée et en ce que la longueur de période de la structure périodique est choisie de telle sorte qu'il se produise un couplage modal dans la plage des modes de faible ordre.
  6. Capteur selon la revendication 5, caractérisé en ce que la longueur de période est choisie de telle sorte qu'il se produise un couplage modal pour un mode d'ordre m = M/2, M étant le nombre total de modes.
  7. Capteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la source de lumière est une diode laser ayant une caractéristique de rayonnement étroite.
  8. Capteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche (2) formant des points de compression périodiques se présente sous la forme d'un treillis et en ce que le guide d'ondes lumineuses (1) est cousu sur la couche en forme de treillis.
  9. Capteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la face de la couche (2), sur laquelle s'applique la force compressive, est occupée par une pluralité de plaquettes pour transmettre la pression.
EP95112610A 1994-08-12 1995-08-10 Capteur optique de force compressive Expired - Lifetime EP0696782B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428650 1994-08-12
DE4428650A DE4428650A1 (de) 1994-08-12 1994-08-12 Optische Druckkrafterfassungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0696782A1 EP0696782A1 (fr) 1996-02-14
EP0696782B1 true EP0696782B1 (fr) 1999-04-14

Family

ID=6525576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112610A Expired - Lifetime EP0696782B1 (fr) 1994-08-12 1995-08-10 Capteur optique de force compressive

Country Status (5)

Country Link
US (1) US5604318A (fr)
EP (1) EP0696782B1 (fr)
AT (1) ATE179010T1 (fr)
CA (1) CA2155892C (fr)
DE (2) DE4428650A1 (fr)

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DE10251085B4 (de) * 2002-10-29 2004-12-09 Decoma (Germany) Gmbh Mehrschichtiger Sensor
US7667849B2 (en) * 2003-09-30 2010-02-23 British Telecommunications Public Limited Company Optical sensor with interferometer for sensing external physical disturbance of optical communications link
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EP1825613B1 (fr) 2004-12-17 2011-02-16 BRITISH TELECOMMUNICATIONS public limited company Evaluation d'un reseau
US20080266087A1 (en) * 2005-02-09 2008-10-30 Tatar Robert C Optical Security Sensors, Systems, and Methods
GB0504579D0 (en) * 2005-03-04 2005-04-13 British Telecomm Communications system
US7697795B2 (en) * 2005-03-04 2010-04-13 British Telecommunications Public Limited Company Acoustic modulation
EP1708388A1 (fr) 2005-03-31 2006-10-04 British Telecommunications Public Limited Company Communication d'information
US20090054809A1 (en) * 2005-04-08 2009-02-26 Takeharu Morishita Sampling Device for Viscous Sample, Homogenization Method for Sputum and Method of Detecting Microbe
EP1713301A1 (fr) * 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Procédé et dispositif pour communiquer du son sur une liaison optique
EP1729096A1 (fr) * 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Méthode et dispositif de détermination de la position d'une perturbation dans une fibre optique
JP2007064716A (ja) * 2005-08-30 2007-03-15 Hitachi Cable Ltd 衝突検知センサ
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EP1826924A1 (fr) * 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Sensation d'une perturbation
EP1987317B1 (fr) * 2006-02-24 2013-07-17 BRITISH TELECOMMUNICATIONS public limited company Détection d'une perturbation
CA2643344A1 (fr) * 2006-02-24 2007-08-30 British Telecommunications Public Limited Company Detection d'une perturbation
EP2002219B1 (fr) * 2006-04-03 2014-12-03 BRITISH TELECOMMUNICATIONS public limited company Évaluation de la position d'une perturbation
DE102006019595B3 (de) * 2006-04-27 2007-12-13 Koenig & Bauer Aktiengesellschaft Gefahrenbereichsabsicherung an einem Rollenwechsler mit einer Trittmatte
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WO2007140210A2 (fr) * 2006-05-24 2007-12-06 Tarilian Laser Technologies, Limited PROcédé de détection d'un signe vital optique et dispositif de mesure
MY146999A (en) 2007-01-31 2012-10-15 Tarilian Laser Technologies Ltd Optical power modulation vital sign detection method and measurement device
DE102009046408A1 (de) 2009-11-04 2011-05-12 Waldemar Marinitsch Kraftsensor
DE102009055121A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Sensierendes Flächenelement und Verfahren zu dessen Herstellung
DE102009055124A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Sensierendes Flächenelement und Verfahren zu dessen Herstellung
KR20120139264A (ko) * 2011-06-17 2012-12-27 한국전자통신연구원 광도파로를 이용하여 압력을 감지하기 위한 장치 및 그 방법
DE202011052253U1 (de) * 2011-12-09 2012-01-31 Mayser Gmbh & Co. Kg Kollisionsschutz
GB2567610B (en) * 2017-03-21 2021-07-21 Nuron Ltd Optical fibre pressure sensing apparatus employing longitudinal diaphragm
WO2020117457A1 (fr) 2018-12-04 2020-06-11 Ofs Fitel, Llc Capteur distribué haute résolution utilisant une fibre optique à coeur décalé
GB2586974B (en) * 2019-09-06 2022-12-28 Nuron Ltd System for producing strain in a fibre
RU196573U1 (ru) * 2019-09-11 2020-03-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Череповецкий государственный университет" Волоконно-оптическая система мониторинга состояния объекта
DE102019219521B4 (de) * 2019-12-13 2022-02-03 Robert Bosch Gmbh Schaumstoffsensor und Verfahren zum Betreiben einer Maschine
CN115798131B (zh) * 2023-02-13 2023-04-28 成都陆迪盛华科技有限公司 一种基于分布式光纤的多维度特征入侵检测方法

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Also Published As

Publication number Publication date
US5604318A (en) 1997-02-18
ATE179010T1 (de) 1999-04-15
DE59505633D1 (de) 1999-05-20
CA2155892A1 (fr) 1996-02-13
CA2155892C (fr) 2002-07-02
EP0696782A1 (fr) 1996-02-14
DE4428650A1 (de) 1996-02-15

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