BR8103257A - Sistema digital de medicao de pressao - Google Patents
Sistema digital de medicao de pressaoInfo
- Publication number
- BR8103257A BR8103257A BR8103257A BR8103257A BR8103257A BR 8103257 A BR8103257 A BR 8103257A BR 8103257 A BR8103257 A BR 8103257A BR 8103257 A BR8103257 A BR 8103257A BR 8103257 A BR8103257 A BR 8103257A
- Authority
- BR
- Brazil
- Prior art keywords
- digital pressure
- medication system
- pressure medication
- digital
- pressure
- Prior art date
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
- G01L9/12—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
-
- 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
- G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
- G01L9/0086—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in capacitance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/153,129 US4322977A (en) | 1980-05-27 | 1980-05-27 | Pressure measuring system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8103257A true BR8103257A (pt) | 1982-02-16 |
Family
ID=22545900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8103257A BR8103257A (pt) | 1980-05-27 | 1981-05-26 | Sistema digital de medicao de pressao |
Country Status (6)
Country | Link |
---|---|
US (1) | US4322977A (pt) |
EP (1) | EP0040996B1 (pt) |
JP (1) | JPS5720634A (pt) |
BR (1) | BR8103257A (pt) |
CA (1) | CA1160348A (pt) |
DE (1) | DE3172204D1 (pt) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4392382A (en) * | 1981-03-09 | 1983-07-12 | Motorola Inc. | Linearized electronic capacitive pressure transducer |
US4457179A (en) * | 1981-03-16 | 1984-07-03 | The Bendix Corporation | Differential pressure measuring system |
US4422335A (en) * | 1981-03-25 | 1983-12-27 | The Bendix Corporation | Pressure transducer |
US4398426A (en) * | 1981-07-02 | 1983-08-16 | Kavlico Corporation | Linear capacitive pressure transducer system |
US4434664A (en) * | 1981-07-06 | 1984-03-06 | The Bendix Corporation | Pressure ratio measurement system |
US4449409A (en) * | 1981-07-13 | 1984-05-22 | The Bendix Corporation | Pressure measurement system with a constant settlement time |
US4532809A (en) * | 1981-10-05 | 1985-08-06 | Allied Corporation | Pressure measuring systems with increased accuracy for a constant resolution |
FI69932C (fi) * | 1984-05-31 | 1986-05-26 | Vaisala Oy | Maetningsfoerfarande foer kapacitanser speciellt foer smao kapacitanser vid vilker man anvaender tvao referenser |
US4618856A (en) * | 1985-05-03 | 1986-10-21 | Allied Corporation | Stall surge detector |
US4747296A (en) * | 1985-09-27 | 1988-05-31 | Design Team Partners | Electronic tonometer with baseline nulling system |
JPS62211533A (ja) * | 1986-03-13 | 1987-09-17 | Yokogawa Electric Corp | 容量式変換装置 |
US5083091A (en) * | 1986-04-23 | 1992-01-21 | Rosemount, Inc. | Charged balanced feedback measurement circuit |
US5051937A (en) * | 1986-05-05 | 1991-09-24 | Texas Instruments Incorporated | Low cost high precision sensor |
US4982351A (en) * | 1986-05-05 | 1991-01-01 | Texas Instruments Incorporated | Low cost high precision sensor |
US4791352A (en) * | 1986-07-17 | 1988-12-13 | Rosemount Inc. | Transmitter with vernier measurement |
US4728931A (en) * | 1986-07-25 | 1988-03-01 | Honeywell Inc. | Charge redistribution capacitance detection apparatus |
US4728932A (en) * | 1986-07-25 | 1988-03-01 | Honeywell Inc. | Detector for capacitive sensing devices |
US4765188A (en) * | 1986-11-24 | 1988-08-23 | Bourns Instruments, Inc. | Pressure transducer with integral digital temperature compensation |
US4860232A (en) * | 1987-04-22 | 1989-08-22 | Massachusetts Institute Of Technology | Digital technique for precise measurement of variable capacitance |
EP0333714A1 (en) * | 1987-09-08 | 1989-09-27 | Panex Corporation | Pressure sensor system |
US4875369A (en) * | 1987-09-08 | 1989-10-24 | Panex Corporation | Pressure sensor system |
US4875368A (en) * | 1987-09-08 | 1989-10-24 | Panex Corporation | Pressure sensor system |
US4878012A (en) * | 1988-06-10 | 1989-10-31 | Rosemount Inc. | Charge balanced feedback transmitter |
US4896100A (en) * | 1988-08-30 | 1990-01-23 | Hitec Products, Inc. | Signal conditioner for capacitive transducer |
US4987782A (en) * | 1989-10-03 | 1991-01-29 | Allied-Signal Inc. | Capacitive pressure transducer system |
US5291534A (en) * | 1991-06-22 | 1994-03-01 | Toyoda Koki Kabushiki Kaisha | Capacitive sensing device |
ES2148235T3 (es) * | 1992-08-10 | 2000-10-16 | Dow Deutschland Inc | Procedimiento y dispositivo para el seguimiento de la excitacion vibracional de un compresor axial. |
EP0654162B1 (en) * | 1992-08-10 | 1999-06-16 | Dow Deutschland Inc. | Process for detecting fouling of an axial compressor |
ES2132243T3 (es) * | 1992-08-10 | 1999-08-16 | Dow Deutschland Inc | Procedimiento y dispositivo para vigilar y controlar un compresor. |
CA2142189A1 (en) * | 1992-08-10 | 1994-02-17 | Hilger A. Walter | Adaptor for mounting a pressure sensor to a gas turbine housing |
US5438275A (en) * | 1994-01-03 | 1995-08-01 | International Business Machines Corporation | Digitizing stylus having capacitive pressure and contact sensing capabilities |
US5705978A (en) * | 1995-09-29 | 1998-01-06 | Rosemount Inc. | Process control transmitter |
US5808198A (en) * | 1997-05-19 | 1998-09-15 | The Charles Stark Draper Laboratory, Inc. | RF balanced capacitive vibration sensor system |
DE19920990C2 (de) * | 1999-05-06 | 2002-02-14 | Siemens Ag | Druckerfassungs-Anordnung |
US20110301569A1 (en) | 2001-01-20 | 2011-12-08 | Gordon Wayne Dyer | Methods and apparatus for the CVCS |
US6516672B2 (en) | 2001-05-21 | 2003-02-11 | Rosemount Inc. | Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter |
JP2003168707A (ja) * | 2001-11-30 | 2003-06-13 | Tokyo Electron Ltd | プローブ装置 |
US6828802B2 (en) * | 2002-08-16 | 2004-12-07 | Rosemount Inc. | Pressure measurement device including a capacitive sensor in an amplifier feedback path |
KR20060037861A (ko) * | 2004-10-28 | 2006-05-03 | 삼성에스디아이 주식회사 | 데이터 구동부, 평판 표시장치 및 데이터 변환 방법 |
US8245562B2 (en) * | 2009-07-31 | 2012-08-21 | Freescale Semiconductor, Inc. | Circuit and method for pressure sensor testing |
CN102645336B (zh) * | 2012-05-10 | 2014-06-04 | 华北电力大学 | 汽轮发电机组汽流激振故障实时辨识方法 |
CN102692303B (zh) * | 2012-05-17 | 2014-07-02 | 华北电力大学 | 汽轮发电机组汽流激振故障高效识别方法 |
KR102622726B1 (ko) * | 2019-05-15 | 2024-01-08 | 스미토모 크라이어제닉스 오브 아메리카 인코포레이티드 | 진공 게이지를 위한 브리지 전압 반전 회로 및 전압 반전 회로를 갖는 압력 게이지 센서 |
CN114279626B (zh) * | 2021-12-06 | 2024-07-16 | 北京晨晶电子有限公司 | 一种基于薄膜电容器的气体真空度检测方法及系统 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3237178A (en) * | 1963-11-01 | 1966-02-22 | Honeywell Inc | Control apparatus |
US3753373A (en) * | 1965-10-22 | 1973-08-21 | Bissett Berman Corp | Transducer system |
US3750476A (en) * | 1967-09-25 | 1973-08-07 | Bissett Berman Corp | Pressure transducer |
US3595084A (en) * | 1970-02-27 | 1971-07-27 | Continental Can Co | Digital transducer system |
US3858097A (en) * | 1973-12-26 | 1974-12-31 | Bendix Corp | Pressure-sensing capacitor |
US3882488A (en) * | 1973-12-26 | 1975-05-06 | Bendix Corp | Analog to digital converter system including computer controlled feedback means |
US4001813A (en) * | 1975-07-02 | 1977-01-04 | The Bendix Corporation | Precision capacitance to digital conversion system |
US4091683A (en) * | 1976-09-27 | 1978-05-30 | Panex, Inc. | Single channel electrical comparative measuring system |
US4153873A (en) * | 1977-10-11 | 1979-05-08 | Rosemount Inc. | Transducer for converting a varying analog current signal to a binary digital signal |
US4133205A (en) * | 1977-11-25 | 1979-01-09 | Rca Corporation | Identification of engine cylinder having fault |
US4289035A (en) * | 1978-02-15 | 1981-09-15 | The Bendix Corporation | Compensated capacitive transducer demodulator circuit |
CA1123225A (en) * | 1978-02-15 | 1982-05-11 | Bendix Corporation (The) | Compensated capacitive transducer demodulator circuit |
US4165650A (en) * | 1978-07-19 | 1979-08-28 | The Bendix Corporation | Dual purpose pressure sensor |
US4214479A (en) * | 1979-05-21 | 1980-07-29 | Simmonds Precision Products, Inc. | Capacitive type fuel probe compensation circuit |
-
1980
- 1980-05-27 US US06/153,129 patent/US4322977A/en not_active Expired - Lifetime
-
1981
- 1981-02-06 CA CA000370277A patent/CA1160348A/en not_active Expired
- 1981-04-30 EP EP81400694A patent/EP0040996B1/en not_active Expired
- 1981-04-30 DE DE8181400694T patent/DE3172204D1/de not_active Expired
- 1981-05-26 BR BR8103257A patent/BR8103257A/pt unknown
- 1981-05-27 JP JP8071581A patent/JPS5720634A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4322977A (en) | 1982-04-06 |
JPS5720634A (en) | 1982-02-03 |
DE3172204D1 (en) | 1985-10-17 |
EP0040996B1 (en) | 1985-09-11 |
CA1160348A (en) | 1984-01-10 |
EP0040996A1 (en) | 1981-12-02 |
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