KR960015068B1 - 브릿지 회로에서 동작되는 플로우 탐침을 갖는 회로 장치 - Google Patents

브릿지 회로에서 동작되는 플로우 탐침을 갖는 회로 장치 Download PDF

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Publication number
KR960015068B1
KR960015068B1 KR1019890701839A KR890701839A KR960015068B1 KR 960015068 B1 KR960015068 B1 KR 960015068B1 KR 1019890701839 A KR1019890701839 A KR 1019890701839A KR 890701839 A KR890701839 A KR 890701839A KR 960015068 B1 KR960015068 B1 KR 960015068B1
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KR
South Korea
Prior art keywords
circuit
voltage
oscillator
output
input
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
Application number
KR1019890701839A
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English (en)
Korean (ko)
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KR900700863A (ko
Inventor
클라인한스 요제프
Original Assignee
로베르트 보쉬 게엠베하
클라우스 포스, 랄프 베렌스
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Application filed by 로베르트 보쉬 게엠베하, 클라우스 포스, 랄프 베렌스 filed Critical 로베르트 보쉬 게엠베하
Publication of KR900700863A publication Critical patent/KR900700863A/ko
Application granted granted Critical
Publication of KR960015068B1 publication Critical patent/KR960015068B1/ko
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
    • G01F1/6986—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters with pulsed heating, e.g. dynamic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Inverter Devices (AREA)
KR1019890701839A 1988-02-06 1988-12-13 브릿지 회로에서 동작되는 플로우 탐침을 갖는 회로 장치 Expired - Fee Related KR960015068B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3803609A DE3803609A1 (de) 1988-02-06 1988-02-06 Schaltungsanordnung mit einer in brueckenschaltung betriebenen stroemungssonde
USP3803609.6 1988-02-06
PCT/DE1988/000761 WO1989007242A1 (fr) 1988-02-06 1988-12-13 Agencement de connexion a sonde d'ecoulement actionnee par un circuit en pont

Publications (2)

Publication Number Publication Date
KR900700863A KR900700863A (ko) 1990-08-17
KR960015068B1 true KR960015068B1 (ko) 1996-10-24

Family

ID=6346790

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890701839A Expired - Fee Related KR960015068B1 (ko) 1988-02-06 1988-12-13 브릿지 회로에서 동작되는 플로우 탐침을 갖는 회로 장치

Country Status (6)

Country Link
US (1) US5063352A (https=)
EP (1) EP0400012A1 (https=)
JP (1) JPH03502362A (https=)
KR (1) KR960015068B1 (https=)
DE (1) DE3803609A1 (https=)
WO (1) WO1989007242A1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764067A (en) * 1995-05-10 1998-06-09 Rastegar; Ali J. Method and apparatus for sensor signal conditioning using low-cost, high-accuracy analog circuitry
US6647777B1 (en) * 1997-10-15 2003-11-18 Mitsui Mining & Smelting Co., Ltd. Flow rate sensor, flow meter, and discharge rate control apparatus for liquid discharge machines
US6198296B1 (en) 1999-01-14 2001-03-06 Burr-Brown Corporation Bridge sensor linearization circuit and method
JP4212767B2 (ja) 2000-12-21 2009-01-21 旭化成エレクトロニクス株式会社 高速電流スイッチ回路および高周波電流源
JP4790405B2 (ja) * 2005-12-16 2011-10-12 三菱電機株式会社 熱式流量センサ
US7653503B2 (en) * 2006-04-20 2010-01-26 Tao Of Systems Integration, Inc. Temperature-compensating sensor system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603147A (en) * 1969-11-05 1971-09-07 Thermo Systems Inc Pulsed anemometer circuit
DE2214114C3 (de) * 1972-03-23 1974-12-05 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Umwandlung einer Verstimmung einer Widerstandsbriicke in eine dazu proportionale Frequenzänderung eines RC-Oszillators
US3928800A (en) * 1973-06-25 1975-12-23 Sperry Rand Corp Calorimetric resistance bridges
US4043195A (en) * 1975-03-13 1977-08-23 Hunting Curtis J Digital thermodynamic flow-meter
CH624484A5 (https=) * 1978-07-14 1981-07-31 Terraillon
US4334186A (en) * 1979-10-03 1982-06-08 Hitachi, Ltd. Apparatus for driving hot-wire type flow sensor
JPS5866018A (ja) * 1981-10-16 1983-04-20 Hitachi Ltd 空気流量計
DE3608538A1 (de) * 1986-03-14 1987-09-17 Bosch Gmbh Robert Schaltungsanordnung mit einer in brueckenschaltung betriebenen stroemungssonde
US4884215A (en) * 1987-02-27 1989-11-28 Jabil Circuit Company Airflow sensor and control circuit

Also Published As

Publication number Publication date
EP0400012A1 (de) 1990-12-05
WO1989007242A1 (fr) 1989-08-10
KR900700863A (ko) 1990-08-17
JPH03502362A (ja) 1991-05-30
US5063352A (en) 1991-11-05
DE3803609A1 (de) 1989-08-17
DE3803609C2 (https=) 1990-03-29

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