DE2809340A1 - Verfahren und vorrichtung zur pegelstandsbestimmung - Google Patents

Verfahren und vorrichtung zur pegelstandsbestimmung

Info

Publication number
DE2809340A1
DE2809340A1 DE19782809340 DE2809340A DE2809340A1 DE 2809340 A1 DE2809340 A1 DE 2809340A1 DE 19782809340 DE19782809340 DE 19782809340 DE 2809340 A DE2809340 A DE 2809340A DE 2809340 A1 DE2809340 A1 DE 2809340A1
Authority
DE
Germany
Prior art keywords
signal
stage
duration
measuring
time
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.)
Withdrawn
Application number
DE19782809340
Other languages
German (de)
English (en)
Inventor
Willy Ab Egg
Alfred Schuler
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.)
HELIOS ELEKTROAPP
Original Assignee
HELIOS ELEKTROAPP
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 HELIOS ELEKTROAPP filed Critical HELIOS ELEKTROAPP
Publication of DE2809340A1 publication Critical patent/DE2809340A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/266—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/96072—Phase comparison, i.e. where a phase comparator receives at one input the signal directly from the oscillator, at a second input the same signal but delayed, with a delay depending on a sensing capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
DE19782809340 1977-03-11 1978-03-03 Verfahren und vorrichtung zur pegelstandsbestimmung Withdrawn DE2809340A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH306077A CH610658A5 (en) 1977-03-11 1977-03-11 Method and device for monitoring or measuring a level

Publications (1)

Publication Number Publication Date
DE2809340A1 true DE2809340A1 (de) 1978-09-21

Family

ID=4247711

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782809340 Withdrawn DE2809340A1 (de) 1977-03-11 1978-03-03 Verfahren und vorrichtung zur pegelstandsbestimmung

Country Status (3)

Country Link
CH (1) CH610658A5 (zh)
DE (1) DE2809340A1 (zh)
FR (1) FR2383436A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902107A1 (de) * 1989-01-25 1990-08-02 Kessler Franz Kapazitive fuellstands- und niveaumesseinrichtung
DE10023850A1 (de) * 2000-05-16 2001-11-29 Alfred Haupt Kapazitives Meßsystem mit automatischer Kompensation der Kabellänge und des kabelbedingten Temperaturfehlers bei einer kontinuierlichen kapazitiven Füllstandsmessung
DE19728280C2 (de) * 1996-11-21 2001-12-20 Alfred Haupt Kapazitätssonde und dazugehörige Auswerteschaltung
DE10324731A1 (de) * 2003-05-31 2004-12-16 Braun Gmbh Verfahren und Schaltungsanordnung zur Detektion eines Füllstands einer Flüssigkeit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058364B (en) * 1979-09-01 1983-03-23 Ferranti Ltd Capacitance measuring apparatus
IT1131315B (it) * 1980-06-13 1986-06-18 Logic Spa Sistema di rilevamento e segnalazione della quantita' di carburante contenuto in un serbatoio di veicoli,particolarmente di veicoli aerei
IT1211347B (it) * 1987-07-31 1989-10-18 Fiat Auto Spa Dispositivo di misura del quantitativo di liquido contenuto all interno di un serbatoio
EP1860776A3 (en) * 2006-05-26 2010-08-11 Fujikura Ltd. Proximity sensor and proximity sensing method
JP4970129B2 (ja) * 2006-05-26 2012-07-04 株式会社フジクラ 近接検知センサ及び近接検知方法
PL1862806T3 (pl) * 2006-06-01 2018-01-31 Electrolux Home Products Corp Nv Sposób i urządzenie do pomiaru pojemności elektrycznej elementu pojemnościowego

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902107A1 (de) * 1989-01-25 1990-08-02 Kessler Franz Kapazitive fuellstands- und niveaumesseinrichtung
DE19728280C2 (de) * 1996-11-21 2001-12-20 Alfred Haupt Kapazitätssonde und dazugehörige Auswerteschaltung
DE10023850A1 (de) * 2000-05-16 2001-11-29 Alfred Haupt Kapazitives Meßsystem mit automatischer Kompensation der Kabellänge und des kabelbedingten Temperaturfehlers bei einer kontinuierlichen kapazitiven Füllstandsmessung
DE10023850B4 (de) * 2000-05-16 2005-02-10 Alfred Haupt Kapazitives Meßsystem mit automatischer Kompensation der Kabellänge und des kabelbedingten Temperaturfehlers bei einer kontinuierlichen kapazitiven Füllstandsmessung
DE10324731A1 (de) * 2003-05-31 2004-12-16 Braun Gmbh Verfahren und Schaltungsanordnung zur Detektion eines Füllstands einer Flüssigkeit
US7378857B2 (en) 2003-05-31 2008-05-27 Braun Gmbh Methods and apparatuses for detecting the level of a liquid in a container

Also Published As

Publication number Publication date
FR2383436B1 (zh) 1982-06-18
CH610658A5 (en) 1979-04-30
FR2383436A1 (fr) 1978-10-06

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination