DE69006740D1 - Kapazitives drucksensorsystem. - Google Patents
Kapazitives drucksensorsystem.Info
- Publication number
- DE69006740D1 DE69006740D1 DE90914824T DE69006740T DE69006740D1 DE 69006740 D1 DE69006740 D1 DE 69006740D1 DE 90914824 T DE90914824 T DE 90914824T DE 69006740 T DE69006740 T DE 69006740T DE 69006740 D1 DE69006740 D1 DE 69006740D1
- Authority
- DE
- Germany
- Prior art keywords
- pressure sensor
- sensor system
- capacitive pressure
- capacitive
- sensor
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
- G01L9/0075—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance using a ceramic diaphragm, e.g. alumina, fused quartz, glass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
- G01L9/125—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/416,698 US4987782A (en) | 1989-10-03 | 1989-10-03 | Capacitive pressure transducer system |
PCT/US1990/005600 WO1991005232A1 (en) | 1989-10-03 | 1990-10-02 | Capacitive pressure transducer system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69006740D1 true DE69006740D1 (de) | 1994-03-24 |
DE69006740T2 DE69006740T2 (de) | 1994-06-16 |
Family
ID=23650951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69006740T Expired - Fee Related DE69006740T2 (de) | 1989-10-03 | 1990-10-02 | Kapazitives drucksensorsystem. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4987782A (de) |
EP (1) | EP0494926B1 (de) |
JP (1) | JPH0774767B2 (de) |
DE (1) | DE69006740T2 (de) |
WO (1) | WO1991005232A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3233791B2 (ja) * | 1994-08-25 | 2001-11-26 | 株式会社山武 | 差動容量反転積分器及びこれを用いた静電容量変化量検出装置 |
FI102783B (fi) * | 1994-12-22 | 1999-02-15 | Vaisala Oyj | Menetelmä virtausnopeusanturin linearisoimiseksi sekä linearisoitu vir tauksen nopeuden mittauslaitteisto |
US5757608A (en) * | 1996-01-25 | 1998-05-26 | Alliedsignal Inc. | Compensated pressure transducer |
US6499348B1 (en) | 1999-12-03 | 2002-12-31 | Scimed Life Systems, Inc. | Dynamically configurable ultrasound transducer with integral bias regulation and command and control circuitry |
US6169487B1 (en) * | 1999-12-13 | 2001-01-02 | Robert B. Davis | Severe storm warning system |
US7152478B2 (en) * | 2000-07-20 | 2006-12-26 | Entegris, Inc. | Sensor usable in ultra pure and highly corrosive environments |
US6612175B1 (en) | 2000-07-20 | 2003-09-02 | Nt International, Inc. | Sensor usable in ultra pure and highly corrosive environments |
US6536287B2 (en) | 2001-08-16 | 2003-03-25 | Honeywell International, Inc. | Simplified capacitance pressure sensor |
US20090097178A1 (en) * | 2007-10-12 | 2009-04-16 | Texas Instruments Incorporated | Methods and apparatus to detect and over-current in switching circuits |
US8037770B2 (en) * | 2008-05-21 | 2011-10-18 | Honeywell International Inc. | Pressure-sensor apparatus |
US8836349B2 (en) | 2012-08-15 | 2014-09-16 | Robert Bosch Gmbh | Capacitive sensor |
CA2924724C (en) * | 2013-09-18 | 2022-09-20 | Advantec Sensing As | Apparatus and method for characterization of fluids or powders by electrical permittivity |
US10317443B2 (en) | 2017-05-24 | 2019-06-11 | Elmos Semiconductor Ag | Integrated capacitance measurement |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3581238A (en) * | 1967-09-30 | 1971-05-25 | Tsurumi Seikikosaku Sho Co Ltd | Transmission transducer for remote measurement |
US3595084A (en) * | 1970-02-27 | 1971-07-27 | Continental Can Co | Digital transducer system |
DE2433080C2 (de) * | 1974-07-10 | 1983-09-29 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zur Umwandlung einer Brückenverstimmung in eine Frequenzänderung |
SE431683B (sv) * | 1977-09-23 | 1984-02-20 | Testut Aequitas | Anordning for metning av kapacitansen hos en kondensator |
GB2048488B (en) * | 1979-04-26 | 1983-04-27 | Rosemount Eng Co Ltd | Differential pressure sensing apparatus |
US4227419A (en) * | 1979-09-04 | 1980-10-14 | Kavlico Corporation | Capacitive pressure transducer |
CH652823A5 (de) * | 1980-03-26 | 1985-11-29 | Bosch Gmbh Robert | Weg-frequenz-messgroessenwandler. |
US4322977A (en) * | 1980-05-27 | 1982-04-06 | The Bendix Corporation | Pressure measuring system |
US4457179A (en) * | 1981-03-16 | 1984-07-03 | The Bendix Corporation | Differential pressure measuring system |
US4398426A (en) * | 1981-07-02 | 1983-08-16 | Kavlico Corporation | Linear capacitive pressure transducer system |
DE3128032A1 (de) * | 1981-07-16 | 1983-02-03 | Robert Bosch Gmbh, 7000 Stuttgart | Anordnung zur erfassung eines druckes |
GB2123157B (en) * | 1982-06-22 | 1986-10-15 | Peter Caleb Frederi Wolfendale | Load cells |
JPS6165114A (ja) * | 1984-09-06 | 1986-04-03 | Yokogawa Hokushin Electric Corp | 容量式変換装置 |
US4763063A (en) * | 1985-07-26 | 1988-08-09 | Allied-Signal Inc. | Compact digital pressure sensor circuitry |
-
1989
- 1989-10-03 US US07/416,698 patent/US4987782A/en not_active Expired - Lifetime
-
1990
- 1990-10-02 JP JP2513841A patent/JPH0774767B2/ja not_active Expired - Lifetime
- 1990-10-02 EP EP90914824A patent/EP0494926B1/de not_active Expired - Lifetime
- 1990-10-02 WO PCT/US1990/005600 patent/WO1991005232A1/en active IP Right Grant
- 1990-10-02 DE DE69006740T patent/DE69006740T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4987782A (en) | 1991-01-29 |
JPH0774767B2 (ja) | 1995-08-09 |
DE69006740T2 (de) | 1994-06-16 |
EP0494926B1 (de) | 1994-02-16 |
JPH05500569A (ja) | 1993-02-04 |
WO1991005232A1 (en) | 1991-04-18 |
EP0494926A1 (de) | 1992-07-22 |
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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 |