EP1483557A1 - Detecteur d'ondes de surface - Google Patents

Detecteur d'ondes de surface

Info

Publication number
EP1483557A1
EP1483557A1 EP03717140A EP03717140A EP1483557A1 EP 1483557 A1 EP1483557 A1 EP 1483557A1 EP 03717140 A EP03717140 A EP 03717140A EP 03717140 A EP03717140 A EP 03717140A EP 1483557 A1 EP1483557 A1 EP 1483557A1
Authority
EP
European Patent Office
Prior art keywords
surface wave
wave sensor
sensor
reflectors
adhesive
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Withdrawn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
EP03717140A
Other languages
German (de)
English (en)
Inventor
Henri Van Der Knokke
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.)
IHO Holding GmbH and Co KG
Original Assignee
FAG Kugelfischer AG
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 FAG Kugelfischer AG filed Critical FAG Kugelfischer AG
Publication of EP1483557A1 publication Critical patent/EP1483557A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/48—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means
    • G01D5/485—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means using magnetostrictive devices

Definitions

  • the invention relates to a wirelessly interrogable surface wave sensor.
  • Top surface wave sensors that can be queried wirelessly are used in many areas today, since these sensors can transmit measurement data wirelessly without their own energy supply.
  • Such sensors have long been used in pressure measurement, acceleration measurement, surface tension measurement and for measuring chemical properties. Since the measurement results of this surface wave sensor are temperature-dependent, it is necessary to carry out a temperature compensation when transmitting the measurement result in order to be able to draw conclusions about the actual measurement values.
  • Such a surface wave sensor is described in EP-0619 906 B1.
  • This document also shows a method for determining the current temperature of the sensor from the radio signals sent back. With the help of this temperature information, the measurement result can be corrected for the temperature influence.
  • the problem with this document is that several SAW sensors are required for the method shown there.
  • the essence of the invention is that an edge region of the chip area that neither compresses nor stretches under mechanical loads is used to generate a temperature difference signal.
  • two reflectors are placed in this calmed edge zone of the SAW sensor at a short distance. Since these two reflectors are always at the same distance from one another regardless of the mechanical load on the sensor, the temperature of the chip can be drawn directly from the difference signal of these two reflectors. With this simple measure, only the time interval between these two signals needs to be evaluated. This time interval is then directly proportional to the current temperature of the SAW sensor.
  • a surface wave sensor 1 is shown in plan view in FIG. This surface wave sensor is applied to the surface of the part to be measured using adhesive.
  • the adhesive 2 elastically transmits the changes in length of the part to be measured to the surface wave sensor.
  • the antenna 3 is shown schematically on the sensor, via which the electromagnetic pulses reach the SAW sensor and are sent back again. These electromagnetic waves are converted by the transducer 4 into mechanical waves that run over the SAW sensor.
  • reflectors 5a, 5b are attached to the surface wave sensor.
  • the area that mechanically expands and compresses during the measurement tasks of this sensor is provided with the reference number 7.
  • the two edge areas 8 of the surface wave sensor are areas that are not stretched or compressed due to the mechanical properties of the adhesive and the carrier material.
  • the reflectors 6a and 6b are arranged in this edge region 8.
  • the distance between the reflectors 6a and 6b remains largely independent of the external load and thus always almost constant.
  • this calmed area 8 corresponds to approximately 3 times the thickness of the substrate of the SAW sensor.
  • One possibility of enlarging the calmed edge area 8 is to specifically omit the adhesive 2 with which the surface wave sensor is applied to the carrier material in the edge area 8. No forces are transmitted in the area without adhesive 10.
  • FIG. 2 shows the measurement result of a surface wave sensor that was glued to a carrier material that was stretched for experimental purposes.
  • the measurement points along the surface wave sensor are plotted on the abscissa of this diagram.
  • the ordinate of this diagram shows the elongation of the surface wave sensor.
  • the two calming edge zones 8, in which the sensor does not stretch under load, are represented by horizontal lines. In between is the area 7, which is proportional to the elongation of the material to be measured.
  • These additional reflectors are arranged in the area of the calmed edge zones 8.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Fluid Pressure (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Aerials With Secondary Devices (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne un détecteur d'ondes de surface (1) comprenant une antenne (3), un transducter (4) et des réflecteurs (5a et 5b). Des réflecteurs supplémentaires (6a, 6b) sont placés sur ce détecteur d'ondes de surface (1) dans une zone de bordure (8) calme pour réfléchir des signaux qui sont utilisés pour l'exploitation de la température actuelle.
EP03717140A 2002-03-14 2003-03-12 Detecteur d'ondes de surface Withdrawn EP1483557A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10211198 2002-03-14
DE10211198A DE10211198A1 (de) 2002-03-14 2002-03-14 Oberflächenwellensensor
PCT/DE2003/000777 WO2003078950A1 (fr) 2002-03-14 2003-03-12 Detecteur d'ondes de surface

Publications (1)

Publication Number Publication Date
EP1483557A1 true EP1483557A1 (fr) 2004-12-08

Family

ID=27771279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03717140A Withdrawn EP1483557A1 (fr) 2002-03-14 2003-03-12 Detecteur d'ondes de surface

Country Status (6)

Country Link
US (1) US7109632B2 (fr)
EP (1) EP1483557A1 (fr)
JP (1) JP2005520147A (fr)
CN (1) CN100383553C (fr)
DE (1) DE10211198A1 (fr)
WO (1) WO2003078950A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7136683B2 (en) 2004-03-23 2006-11-14 Honeywell International Inc. Surface acoustic wave sensor and radio frequency identification interrogator fixture
US7000461B2 (en) * 2004-03-23 2006-02-21 Honeywell International Inc. Patch wireless test fixture
US7243547B2 (en) * 2004-10-13 2007-07-17 Honeywell International Inc. MEMS SAW sensor
FR2925696B1 (fr) * 2007-12-21 2011-05-06 Senseor Capteur passif a ondes de surface comportant une antenne integree et applications medicales utilisant ce type de capteur passif
US7730772B2 (en) 2007-12-28 2010-06-08 Honeywell International Inc. Surface acoustic wave sensor and package
US7726184B2 (en) 2007-12-28 2010-06-01 Honeywell International Inc. Surface acoustic wave sensor and package
JP5101356B2 (ja) * 2008-03-17 2012-12-19 日産自動車株式会社 圧力センサおよびこれを備えた圧力測定装置
US8384524B2 (en) 2008-11-26 2013-02-26 Honeywell International Inc. Passive surface acoustic wave sensing system
US8317392B2 (en) 2008-12-23 2012-11-27 Honeywell International Inc. Surface acoustic wave based micro-sensor apparatus and method for simultaneously monitoring multiple conditions
US8479581B2 (en) 2011-05-03 2013-07-09 General Electric Company Device and method for measuring pressure on wind turbine components
US9702772B2 (en) 2014-03-26 2017-07-11 Mnemonics, Inc. Surface acoustic wave (SAW) based strain sensor
CN104567963A (zh) * 2015-01-16 2015-04-29 王东方 针对复杂被测体的声表面波无线传感器解决方法
WO2019201408A1 (fr) 2018-04-19 2019-10-24 Diehl Ako Stiftung & Co. Kg Appareil ménager électronique
WO2019201409A1 (fr) 2018-04-19 2019-10-24 Diehl Ako Stiftung & Co. Kg Dispositif de commande à bouton-poussoir

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US1982421A (en) 1933-02-08 1934-11-27 Cleveland Twist Drill Co Nitrided article of manufacture
JPS6182131A (ja) 1984-09-28 1986-04-25 Shimadzu Corp 表面弾性波圧力センサ
EP0295111B1 (fr) 1987-06-11 1994-11-02 Aichi Steel Works, Ltd. Acier présentant une résistance élevée à l'usure
RU2105993C1 (ru) * 1992-01-03 1998-02-27 Сименс АГ Опрашиваемый по радио пассивный датчик на поверхностных акустических волнах
JP3404899B2 (ja) 1994-07-19 2003-05-12 日本精工株式会社 転がり軸受
DE19514342C1 (de) * 1995-04-18 1996-02-22 Siemens Ag Stromwandler, geeignet zur Stromstärkemessung an/in auf Hochspannung liegenden elektrischen Einrichtungen
CN1181814A (zh) * 1995-04-18 1998-05-13 西门子公司 无线问答表面波技术传感器
US6208062B1 (en) * 1997-08-18 2001-03-27 X-Cyte, Inc. Surface acoustic wave transponder configuration
JPH1171642A (ja) 1997-08-29 1999-03-16 Daido Steel Co Ltd 摺動部材
WO1999034168A1 (fr) 1997-12-23 1999-07-08 Siemens Aktiengesellschaft Dispositif de mesure et procede d'obtention d'une grandeur mesuree avec assistance de l'energie du processus
DE19805584C2 (de) 1998-02-12 2000-04-13 Daimler Chrysler Ag System und Verfahren zur Materialüberprüfung von Werkstoffen, sowie Werkstoff und Verfahren zu seiner Herstellung
DE10018621A1 (de) 2000-04-14 2001-10-31 Siemens Ag Fernmess-Vorrichtung und -Verfahren
FR2821905B1 (fr) 2001-03-06 2003-05-23 Snfa Roulement a rouleaux cylindriques en acier de nitruration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03078950A1 *

Also Published As

Publication number Publication date
WO2003078950A1 (fr) 2003-09-25
DE10211198A1 (de) 2003-09-25
US20050062364A1 (en) 2005-03-24
CN100383553C (zh) 2008-04-23
JP2005520147A (ja) 2005-07-07
CN1685205A (zh) 2005-10-19
US7109632B2 (en) 2006-09-19

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