CA2835188C - Method and apparatus for detection of lvdt core fallout condition - Google Patents
Method and apparatus for detection of lvdt core fallout condition Download PDFInfo
- Publication number
- CA2835188C CA2835188C CA2835188A CA2835188A CA2835188C CA 2835188 C CA2835188 C CA 2835188C CA 2835188 A CA2835188 A CA 2835188A CA 2835188 A CA2835188 A CA 2835188A CA 2835188 C CA2835188 C CA 2835188C
- Authority
- CA
- Canada
- Prior art keywords
- lvdt
- core
- voltage
- sensing coil
- condition
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title description 5
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- 230000011664 signaling Effects 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 22
- 238000012360 testing method Methods 0.000 description 25
- 238000004886 process control Methods 0.000 description 18
- 230000005284 excitation Effects 0.000 description 14
- 238000004590 computer program Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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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
- 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
- G01D5/12—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 electric or magnetic means
- G01D5/14—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 electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—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 electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/22—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 electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
- G01D5/2291—Linear or rotary variable differential transformers (LVDTs/RVDTs) having a single primary coil and two secondary coils
-
- 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
- G01D5/12—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 electric or magnetic means
- G01D5/244—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 electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24457—Failure detection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/107,042 US8712710B2 (en) | 2011-05-13 | 2011-05-13 | Method and apparatus for detection of LVDT core fallout condition |
| US13/107,042 | 2011-05-13 | ||
| PCT/US2012/035741 WO2012158328A2 (en) | 2011-05-13 | 2012-04-30 | Method and apparatus for detection of lvdt core fallout condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2835188A1 CA2835188A1 (en) | 2012-11-22 |
| CA2835188C true CA2835188C (en) | 2019-02-26 |
Family
ID=47142446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2835188A Expired - Fee Related CA2835188C (en) | 2011-05-13 | 2012-04-30 | Method and apparatus for detection of lvdt core fallout condition |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8712710B2 (enExample) |
| EP (1) | EP2707731B1 (enExample) |
| JP (1) | JP6071011B2 (enExample) |
| CN (1) | CN103518139B (enExample) |
| CA (1) | CA2835188C (enExample) |
| WO (1) | WO2012158328A2 (enExample) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9383228B2 (en) * | 2012-12-03 | 2016-07-05 | Hamilton Sundstrand Corporation | Control voltage signal synthesis system and method |
| US9448275B2 (en) * | 2013-06-25 | 2016-09-20 | The Boeing Company | Fault detection of four wire variable differential transformer sensors |
| EP3126226B1 (en) | 2014-03-31 | 2018-08-01 | Bombardier Inc. | System for detecting mechanical disconnect of a sensor from a controlled element |
| DE102014219848A1 (de) | 2014-09-30 | 2016-03-31 | Airbus Operations Gmbh | Überwachungsvorrichtung für Differentialtransformator-Sensoren in einem Flugzeug und Verfahren |
| US9817061B2 (en) * | 2015-07-16 | 2017-11-14 | The Boeing Company | Linear variable differential transformer (LVDT) secondary wiring intermittent failure monitor |
| US10503181B2 (en) * | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
| US10345357B2 (en) | 2016-02-29 | 2019-07-09 | The Boeing Company | Fault detection in variable differential transformer sensors based on zero-crossings of signals |
| CN109416246B (zh) * | 2016-06-29 | 2021-11-26 | 康斯博格股份有限公司 | 用于非接触式位置感测中的错误检测的系统和方法 |
| US10288759B2 (en) * | 2016-07-14 | 2019-05-14 | Mitsubishi Electric Research Laboratories, Inc. | Contactless semsor |
| US10756531B2 (en) * | 2018-03-29 | 2020-08-25 | Hamilton Sunstrand Corporation | Voltage differential transducer (VDT) fault detection |
| DE102018213725A1 (de) * | 2018-08-15 | 2020-02-20 | Continental Teves Ag & Co. Ohg | Verfahren zum Testen eines Sensors |
| US11428730B2 (en) * | 2020-07-02 | 2022-08-30 | Baker Hughes Oilfield Operations Llc | Sensor circuit diagnosis |
| US11959977B2 (en) * | 2022-06-24 | 2024-04-16 | Hamilton Sundstrand Corporation | Systems and methods for fault detection in variable differential transformers |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4140998A (en) | 1976-03-15 | 1979-02-20 | Sangamo Weston, Inc. | High accuracy position indicator |
| US4514689A (en) | 1982-12-27 | 1985-04-30 | Varian Associates, Inc. | High resolution position sensing apparatus with linear variable differential transformers having phase-shifted energizing signals |
| US4591795A (en) | 1984-10-01 | 1986-05-27 | United Technologies Corporation | Signal conditioning circuit for L/R VDT sensors |
| US4667158A (en) | 1985-04-01 | 1987-05-19 | Redlich Robert W | Linear position transducer and signal processor |
| US4678991A (en) * | 1985-11-18 | 1987-07-07 | United Technologies Corporation | Inductive displacement transducer with unipolar output |
| US4857919A (en) | 1987-09-14 | 1989-08-15 | Conoco Inc. | Method and apparatus for indicating the position of a core member of a variable differential transformer |
| US5327030A (en) | 1987-11-13 | 1994-07-05 | Analog Devices, Inc. | Decoder and monolithic integrated circuit incorporating same |
| US4847548A (en) | 1988-01-28 | 1989-07-11 | General Signal Corporation | Signal conditioner for a linear variable differential transformer |
| US5180979A (en) * | 1991-10-07 | 1993-01-19 | Honeywell Inc. | Position measurement sensor using a linear variable differential transformer with a triangular pulse input and output |
| US5399964A (en) | 1993-08-23 | 1995-03-21 | Elsag International N.V. | Peak amplitude detector for use in a synchronized position demodulator |
| EP0768515B1 (en) | 1995-10-16 | 1999-01-20 | Texas Instruments Inc. | Variable differential transformer apparatus and method |
| US5767670A (en) | 1996-08-29 | 1998-06-16 | Texas Instruments Incorporated | Method and apparatus for providing improved temperature compensated output for variable differential transformer system |
| JP2898621B1 (ja) * | 1998-03-11 | 1999-06-02 | 株式会社コミュータヘリコプタ先進技術研究所 | 変位検出装置 |
| US7138794B1 (en) * | 2000-03-10 | 2006-11-21 | General Electric Company | Detection of faults in linear and rotary voltage transducers |
| DE10036935A1 (de) | 2000-07-28 | 2002-02-07 | Siemens Ag | Verfahren zum Überwachen der Funktion eines Sensors, der zueinander inverse Ausgangssignale liefert, in einem Kraftfahrzeug |
| US20020175677A1 (en) | 2000-11-30 | 2002-11-28 | Roger Proksch | Linear variable differential transformers for high precision position measurements |
| JP2005527817A (ja) | 2002-05-24 | 2005-09-15 | アサイラム リサーチ コーポレーション | デジタル電子機器を持つ線形可変差動変圧器 |
| US7053603B2 (en) | 2003-03-24 | 2006-05-30 | Siemens Aktiengesellschaft | Circuit arrangement with a linear variable differential transformer (LVDT) as a displacement sensor or force sensor |
| US7248994B1 (en) | 2006-01-27 | 2007-07-24 | Alliant Techsystems Inc. | Digital method and apparatus for sensing position with a linear variable differential transformer |
| GB0710036D0 (en) | 2007-05-25 | 2007-07-04 | Goodrich Control Sys Ltd | Fault diagnostics |
| US7913775B2 (en) * | 2007-12-27 | 2011-03-29 | Schlumberger Technology Corporation | Subsurface formation core acquisition system using high speed data and control telemetry |
| JP2011017563A (ja) * | 2009-07-07 | 2011-01-27 | Sumitomo Precision Prod Co Ltd | 変位検出装置及び航空機 |
| CN101788626B (zh) * | 2009-12-30 | 2012-06-06 | 国电南京自动化股份有限公司 | 一种区分位移传感器lvdt断线方式的方法 |
| CN101769709B (zh) * | 2009-12-30 | 2011-09-28 | 国电南京自动化股份有限公司 | 检测位移传感器lvdt断线的模拟电路及其检测方法 |
| CN102012209B (zh) * | 2010-09-29 | 2012-03-07 | 北京京海泉传感科技有限公司 | 差动变压器式位移传感器数字变送解调方法 |
-
2011
- 2011-05-13 US US13/107,042 patent/US8712710B2/en active Active
-
2012
- 2012-04-30 JP JP2014510356A patent/JP6071011B2/ja active Active
- 2012-04-30 EP EP12786024.5A patent/EP2707731B1/en active Active
- 2012-04-30 CN CN201280022897.7A patent/CN103518139B/zh active Active
- 2012-04-30 WO PCT/US2012/035741 patent/WO2012158328A2/en not_active Ceased
- 2012-04-30 CA CA2835188A patent/CA2835188C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103518139B (zh) | 2016-10-26 |
| US8712710B2 (en) | 2014-04-29 |
| WO2012158328A2 (en) | 2012-11-22 |
| EP2707731A4 (en) | 2015-01-21 |
| WO2012158328A3 (en) | 2013-01-10 |
| JP6071011B2 (ja) | 2017-02-01 |
| EP2707731B1 (en) | 2016-03-30 |
| JP2014514588A (ja) | 2014-06-19 |
| CA2835188A1 (en) | 2012-11-22 |
| EP2707731A2 (en) | 2014-03-19 |
| US20120290238A1 (en) | 2012-11-15 |
| CN103518139A (zh) | 2014-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20170404 |
|
| MKLA | Lapsed |
Effective date: 20200831 |