DE68902311D1 - Fuer statische druckvariationen unempfindlicher signalempfaenger. - Google Patents
Fuer statische druckvariationen unempfindlicher signalempfaenger.Info
- Publication number
- DE68902311D1 DE68902311D1 DE8989403518T DE68902311T DE68902311D1 DE 68902311 D1 DE68902311 D1 DE 68902311D1 DE 8989403518 T DE8989403518 T DE 8989403518T DE 68902311 T DE68902311 T DE 68902311T DE 68902311 D1 DE68902311 D1 DE 68902311D1
- Authority
- DE
- Germany
- Prior art keywords
- static pressure
- pressure variations
- signal receivers
- sensitive signal
- sensitive
- 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
- 230000003068 static effect Effects 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
- B06B1/0681—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface and a damping structure
- B06B1/0685—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface and a damping structure on the back only of piezoelectric elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measuring Fluid Pressure (AREA)
- Geophysics And Detection Of Objects (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8817205A FR2641155B1 (de) | 1988-12-23 | 1988-12-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68902311D1 true DE68902311D1 (de) | 1992-09-03 |
DE68902311T2 DE68902311T2 (de) | 1993-02-18 |
Family
ID=9373437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8989403518T Expired - Fee Related DE68902311T2 (de) | 1988-12-23 | 1989-12-15 | Fuer statische druckvariationen unempfindlicher signalempfaenger. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4996675A (de) |
EP (1) | EP0378021B1 (de) |
JP (1) | JPH02224598A (de) |
CN (1) | CN1019444B (de) |
CA (1) | CA2006565A1 (de) |
DE (1) | DE68902311T2 (de) |
FR (1) | FR2641155B1 (de) |
NO (1) | NO174490C (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2664119B1 (fr) * | 1990-06-29 | 1993-06-11 | Inst Francais Du Petrole | Systeme integre de reception d'ondes acoustiques de grande longueur. |
US5297553A (en) * | 1992-09-23 | 1994-03-29 | Acuson Corporation | Ultrasound transducer with improved rigid backing |
DE4318978C2 (de) * | 1993-06-08 | 1996-09-05 | Heidelberger Druckmasch Ag | Piezoelektrischer Aktuator |
US5646470A (en) * | 1994-04-01 | 1997-07-08 | Benthos, Inc. | Acoustic transducer |
US6418792B1 (en) | 1999-09-24 | 2002-07-16 | Stephen Edward Spychalski | Pressure compensated transducer |
JP4765782B2 (ja) * | 2006-06-09 | 2011-09-07 | 日本電気株式会社 | 水中送波器及び水中送波方法 |
US9110187B2 (en) * | 2009-10-05 | 2015-08-18 | Westerngeco L.L.C. | Sensor assembly having a seismic sensor and a divergence sensor |
US8838392B2 (en) * | 2009-10-05 | 2014-09-16 | Westerngeco L.L.C. | Noise attenuation in passive seismic data |
US8712694B2 (en) * | 2009-10-05 | 2014-04-29 | Westerngeco L.L.C. | Combining seismic data from sensors to attenuate noise |
US8520469B2 (en) * | 2009-10-12 | 2013-08-27 | Westerngeco L.L.C. | Sensor assembly having a seismic sensor, pressure sensor, and processor to apply first and second digital filters |
US20110085417A1 (en) * | 2009-10-12 | 2011-04-14 | Daniel Ronnow | String of Sensor Assemblies Having a Seismic Sensor and Pressure Sensor |
GB201001004D0 (en) * | 2010-01-22 | 2010-03-10 | Reckitt Benckiser Inc | Toilet flush detection system utilizing transducer with piezoelectric sounder element |
US10602289B2 (en) * | 2010-03-09 | 2020-03-24 | Baker Hughes, A Ge Company, Llc | Acoustic transducer with a liquid-filled porous medium backing and methods of making and using same |
US9091783B2 (en) | 2010-11-04 | 2015-07-28 | Westerngeco L.L.C. | Computing a calibration term based on combining divergence data and seismic data |
CN103017949A (zh) * | 2012-11-28 | 2013-04-03 | 安徽埃克森科技集团有限公司 | 一种带振动补偿的压阻式压力传感器 |
US9594174B2 (en) | 2013-02-01 | 2017-03-14 | Westerngeco L.L.C. | Computing rotation data using a gradient of translational data |
WO2015109175A1 (en) | 2014-01-17 | 2015-07-23 | Westerngeco Llc | Seismic sensor coupling |
CN104297795B (zh) * | 2014-11-06 | 2016-09-14 | 安徽理工大学 | 一种基于阻抗分析的飞机黑匣子探测实验装置及方法 |
CN104316955B (zh) * | 2014-11-06 | 2017-01-18 | 安徽理工大学 | 一种基于阻抗分析的构造地震预测实验装置及方法 |
US9534492B2 (en) * | 2014-11-11 | 2017-01-03 | Baker Hughes Incorporated | Pressure compensated capacitive micromachined ultrasound transducer for downhole applications |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE916593C (de) * | 1949-09-08 | 1954-08-12 | Ultrakust Geraetebau Dr Ing Os | Ultraschallgeber |
US3372370A (en) * | 1965-09-22 | 1968-03-05 | Aquasonics Engineering Company | Electroacoustic transducer |
US3375489A (en) * | 1966-03-14 | 1968-03-26 | Harry W. Kompanek | Pressure compensated transducer |
US3380019A (en) * | 1967-01-27 | 1968-04-23 | Navy Usa | Pressure-gradient hydrophone |
US3900543A (en) * | 1971-01-11 | 1975-08-19 | Schlumberger Technology Corp | Method for making a foam seismic streamer |
FR2198155A1 (de) * | 1972-08-29 | 1974-03-29 | Schlumberger Technology Corp | |
US3794866A (en) * | 1972-11-09 | 1974-02-26 | Automation Ind Inc | Ultrasonic search unit construction |
DE2536750C3 (de) * | 1974-08-19 | 1978-08-24 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) | Schwingungsdetektor für Musikinstrumente, insbesondere Gitarren |
US4166229A (en) * | 1978-02-23 | 1979-08-28 | The United States Of America As Represented By The Secretary Of The Navy | Piezoelectric polymer membrane stress gage |
US4439497A (en) * | 1982-05-27 | 1984-03-27 | Shell Oil Company | Ultrasonic sound absorber |
-
1988
- 1988-12-23 FR FR8817205A patent/FR2641155B1/fr not_active Expired - Fee Related
-
1989
- 1989-12-15 DE DE8989403518T patent/DE68902311T2/de not_active Expired - Fee Related
- 1989-12-15 EP EP89403518A patent/EP0378021B1/de not_active Expired - Lifetime
- 1989-12-20 CN CN89105837.0A patent/CN1019444B/zh not_active Expired
- 1989-12-21 NO NO895169A patent/NO174490C/no unknown
- 1989-12-22 JP JP1334642A patent/JPH02224598A/ja active Pending
- 1989-12-22 US US07/454,973 patent/US4996675A/en not_active Expired - Fee Related
- 1989-12-22 CA CA002006565A patent/CA2006565A1/fr not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN1043845A (zh) | 1990-07-11 |
EP0378021A1 (de) | 1990-07-18 |
DE68902311T2 (de) | 1993-02-18 |
JPH02224598A (ja) | 1990-09-06 |
NO174490C (no) | 1994-05-11 |
US4996675A (en) | 1991-02-26 |
CN1019444B (zh) | 1992-12-09 |
EP0378021B1 (de) | 1992-07-29 |
FR2641155A1 (de) | 1990-06-29 |
NO174490B (no) | 1994-01-31 |
NO895169L (no) | 1990-06-25 |
CA2006565A1 (fr) | 1990-06-23 |
NO895169D0 (no) | 1989-12-21 |
FR2641155B1 (de) | 1994-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |