AU2003250104A1 - Capacitive pressure sensor - Google Patents

Capacitive pressure sensor

Info

Publication number
AU2003250104A1
AU2003250104A1 AU2003250104A AU2003250104A AU2003250104A1 AU 2003250104 A1 AU2003250104 A1 AU 2003250104A1 AU 2003250104 A AU2003250104 A AU 2003250104A AU 2003250104 A AU2003250104 A AU 2003250104A AU 2003250104 A1 AU2003250104 A1 AU 2003250104A1
Authority
AU
Australia
Prior art keywords
membrane
electrode
pressure sensor
capacitive pressure
pressure
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.)
Abandoned
Application number
AU2003250104A
Inventor
Ulfert Drewes
Frank Hegner
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of AU2003250104A1 publication Critical patent/AU2003250104A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0618—Overload protection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

Disclosed is a capacitive pressure sensor (1) comprising a base element (10), one side of which is provided with a supporting membrane bed (11) having a concave central area, and a membrane (17) that is connected in a pressure-proof manner to the base element along a joining location, said membrane (17) covering the membrane bed 11. A measuring electrode (13) is disposed in the central area. A reference electrode (14) is arranged in a ditch (12) in order to increase the distance to a counter-electrode (18) on the membrane (17), which makes the reference capacity between the reference electrode and the counter-electrode less sensitive to pressure-related excursions of the membrane (17), resulting in an increased sensitivity of the pressure sensor.
AU2003250104A 2002-07-31 2003-07-18 Capacitive pressure sensor Abandoned AU2003250104A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10235046.9 2002-07-31
DE10235046A DE10235046A1 (en) 2002-07-31 2002-07-31 Capacitive pressure sensor
PCT/EP2003/007843 WO2004013593A1 (en) 2002-07-31 2003-07-18 Capacitive pressure sensor

Publications (1)

Publication Number Publication Date
AU2003250104A1 true AU2003250104A1 (en) 2004-02-23

Family

ID=30128590

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003250104A Abandoned AU2003250104A1 (en) 2002-07-31 2003-07-18 Capacitive pressure sensor

Country Status (6)

Country Link
EP (1) EP1537395B1 (en)
CN (1) CN100353153C (en)
AT (1) ATE319984T1 (en)
AU (1) AU2003250104A1 (en)
DE (2) DE10235046A1 (en)
WO (1) WO2004013593A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI119785B (en) * 2004-09-23 2009-03-13 Vti Technologies Oy Capacitive sensor and method for making capacitive sensor
CN101661012B (en) * 2009-08-11 2013-03-13 南京理工大学 Microfilm capacitive type surface stress sensor used for biochemical detection and manufacture method thereof
DE102009046844A1 (en) * 2009-11-18 2011-05-19 Endress + Hauser Gmbh + Co. Kg Capacitive ceramic pressure cell
DE102010000915A1 (en) * 2010-01-14 2011-07-21 Endress + Hauser GmbH + Co. KG, 79689 Capacitive ceramic pressure sensor i.e. absolute pressure sensor, for container opening to measure absolute pressure on measuring membrane, has electrode and counter electrode between which space is formed and smaller than joint thickness
SG182731A1 (en) * 2010-02-02 2012-08-30 Mks Instr Inc Capacitive pressure sensor
DE102010028773A1 (en) * 2010-05-07 2011-11-10 Endress + Hauser Gmbh + Co. Kg Counter bearing with aspherical membrane bed, pressure sensor with such an abutment and method for their preparation
DE102012111533A1 (en) 2012-11-28 2014-05-28 Endress + Hauser Gmbh + Co. Kg Pressure measuring cell
CN103344381B (en) * 2013-06-08 2016-03-30 天津大学 Wide region vacuum optical fiber sensor with multiple stage rank and preparation method thereof
DE102014201529A1 (en) * 2014-01-28 2015-07-30 Siemens Aktiengesellschaft Method for operating a pressure transmitter and pressure transmitter
US9410861B2 (en) * 2014-03-25 2016-08-09 Honeywell International Inc. Pressure sensor with overpressure protection
DE102014104506A1 (en) * 2014-03-31 2015-10-01 Endress + Hauser Gmbh + Co. Kg pressure sensor
DE102014108748A1 (en) * 2014-06-23 2015-12-24 Endress + Hauser Gmbh + Co. Kg Capacitive differential pressure sensor and method for its manufacture
CN105222931B (en) * 2014-06-25 2019-02-19 香港科技大学 MEMS capacitive pressure sensor and its manufacturing method
HUE042666T2 (en) * 2014-10-17 2019-07-29 Grieshaber Vega Kg Method for determining a pressure measurement signal and corresponding pressure gage
CN105333938B (en) * 2015-11-30 2018-12-14 蚌埠大洋传感系统工程有限公司 A kind of hydraulic weighing sensor of condenser type
EP3173760A1 (en) * 2015-11-30 2017-05-31 VEGA Grieshaber KG Relative pressure sensor
US10732056B2 (en) 2016-06-09 2020-08-04 Tri-Force Management Corporation Force sensor
DE102016124752A1 (en) * 2016-12-19 2018-06-21 Endress+Hauser SE+Co. KG Capacitive pressure sensor
CN108593198A (en) * 2018-04-23 2018-09-28 武汉华星光电技术有限公司 Capacitance diaphragm gauge and dry etching apparatus chamber pressure test system
DE102018222712A1 (en) * 2018-12-21 2020-06-25 Robert Bosch Gmbh Micromechanical component for a capacitive pressure sensor device
CN110044537A (en) * 2019-03-27 2019-07-23 西人马联合测控（泉州）科技有限公司 Pressure sensor and its manufacturing method
CN110715757A (en) * 2019-11-05 2020-01-21 中国计量大学 Capacitive pressure sensor based on carbonized cotton fabric film electrode
CN114279622A (en) * 2021-11-30 2022-04-05 浙江中控技术股份有限公司 Differential pressure sensor
CN117213668A (en) * 2023-09-19 2023-12-12 湖南大学 Ceramic capacitive pressure sensor and manufacturing method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1259600B (en) * 1960-07-01 1968-01-25 Onera (Off Nat Aerospatiale) Device for measuring the pressure by means of a membrane forming one layer of an electrical capacitor and a method for partially manufacturing the device
FR2614986B1 (en) * 1987-05-07 1989-08-18 Otic Fischer & Porter CAPACITIVE CELL STRUCTURE FOR MEASURING DIFFERENTIAL PRESSURES
CN87209178U (en) * 1987-06-17 1987-12-30 天津大学 High temp.-resistant and vibration-proof capacitance pressure transducer
DE3909185A1 (en) * 1989-03-21 1990-09-27 Endress Hauser Gmbh Co CAPACITIVE PRESSURE SENSOR AND METHOD FOR THE PRODUCTION THEREOF
US4972717A (en) * 1989-09-18 1990-11-27 Texas Instruments Incorporated Pressure transducer apparatus and method for making same
CN1020526C (en) * 1990-07-19 1993-05-05 涂相征 Silicon film capacitor pressure sensor and its making method
US5381299A (en) * 1994-01-28 1995-01-10 United Technologies Corporation Capacitive pressure sensor having a substrate with a curved mesa
ATE203326T1 (en) * 1998-12-14 2001-08-15 Endress Hauser Gmbh Co CAPACITIVE PRESSURE OR DIFFERENTIAL PRESSURE MEASUREMENT CELLS AND METHOD FOR THE PRODUCTION THEREOF
DE10036433A1 (en) * 2000-07-26 2002-02-07 Endress Hauser Gmbh Co Capacitive pressure sensor has membrane connected to base body via joint and groove to measurement capacitor connects to end of joint in base body

Also Published As

Publication number Publication date
EP1537395B1 (en) 2006-03-08
WO2004013593A1 (en) 2004-02-12
DE50302624D1 (en) 2006-05-04
EP1537395A1 (en) 2005-06-08
ATE319984T1 (en) 2006-03-15
DE10235046A1 (en) 2004-02-12
CN100353153C (en) 2007-12-05
CN1672023A (en) 2005-09-21

Similar Documents

Publication Publication Date Title
AU2003250104A1 (en) Capacitive pressure sensor
US7392716B2 (en) Piezoresistive strain concentrator
KR900010373A (en) Differential Capacitive Detector with Overpressure Protection
EP0990885A3 (en) Capacitive pressure sensor
LU90286B1 (en) Force transducer
ATE333836T1 (en) STETHOSCOPE TRANSDUCER
DE19833712B8 (en) Pressure sensing device with metal diaphragm
EP1219940A3 (en) Capacitive pressure sensors
SE9600334D0 (en) Combined flow, pressure and temperature sensor
DE69807876D1 (en) CAPACITIVE PRESSURE TRANSDUCER WITH IMPROVED ELECTRODE CARRIER
WO2004016164A3 (en) Sensors for monitoring biological sounds and electric potentials
EP1488744A4 (en) Bedsore main-factor measuring device
WO2003088135A3 (en) Touch sensitive display device
ATE435422T1 (en) ARRANGEMENT OF CHEMICALLY SENSITIVE CAPACITORS
TW200508582A (en) Capacitance manometer having a relatively thick flush diaphragm under tension to provide low hysteresis
DE60305326D1 (en) STRAIN GAUGE
EP1128173A3 (en) Capacitive semiconductor pressure sensor
DE50206033D1 (en) CAPACITIVE DIFFERENTIAL PRESSURE SENSOR
ATE501424T1 (en) DIFFERENTIAL PRESSURE SENSOR
ATE252726T1 (en) LEAK DETECTOR ARRANGEMENT AND SYSTEM
CA2401008A1 (en) Pressure-sensitive switch, its method of calibration and use in a hydrophone array
ATE232294T1 (en) DYNAMIC PRESSURE SENSOR, PHOTOACOUSTIC GAS DETECTOR, MICROPHONE, HYDROPHONE AND PRODUCTION METHOD THEREOF
ATE264500T1 (en) MEMBRANE FOR PRESSURE GAUGES
WO2005066599A3 (en) Modified dual diaphragm pressure sensor
KR101407742B1 (en) Structure for attaching load detecting device and sheet device

Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase