WO2009148233A3 - 레벨 감지 장치 - Google Patents

레벨 감지 장치 Download PDF

Info

Publication number
WO2009148233A3
WO2009148233A3 PCT/KR2009/002831 KR2009002831W WO2009148233A3 WO 2009148233 A3 WO2009148233 A3 WO 2009148233A3 KR 2009002831 W KR2009002831 W KR 2009002831W WO 2009148233 A3 WO2009148233 A3 WO 2009148233A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
level
circuit board
level sensor
dielectric layer
Prior art date
Application number
PCT/KR2009/002831
Other languages
English (en)
French (fr)
Other versions
WO2009148233A2 (ko
Inventor
박용운
Original Assignee
주식회사 켐트로닉스
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 주식회사 켐트로닉스 filed Critical 주식회사 켐트로닉스
Priority to CN2009801206935A priority Critical patent/CN102057259B/zh
Priority to US12/996,075 priority patent/US8789414B2/en
Publication of WO2009148233A2 publication Critical patent/WO2009148233A2/ko
Publication of WO2009148233A3 publication Critical patent/WO2009148233A3/ko

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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • 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
    • G01F23/265—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 for discrete levels
    • 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
    • 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
    • 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
    • G01F23/268—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 mounting arrangements of probes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

측정물의 레벨을 측정하는 레벨 감지 장치에 있어서, 회로기판, 회로기판의 일면과 타면에 서로 다른 면적으로 형성된 제1전극 및 제2전극, 제1전극 위와 제2전극 위에 각각 다른 두께로 형성된 제1유전층 및 제2유전층 및 회로기판을 통하여 제1전극 및 제2전극과 전기적으로 연결되어 제1전극 및 제2전극으로부터 측정되는 각각의 측정값을 이용하여 측정물의 레벨을 판단하는 판단부를 포함하는 레벨 감지 장치가 제공된다. 본 발명에 의하면 본 발명에 따르면, 온도 등의 주변환경에 영향을 받지 않고 레벨을 정확히 감지할 수 있다.
PCT/KR2009/002831 2008-06-03 2009-05-28 레벨 감지 장치 WO2009148233A2 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2009801206935A CN102057259B (zh) 2008-06-03 2009-05-28 物位检测装置
US12/996,075 US8789414B2 (en) 2008-06-03 2009-05-28 Level sensing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0052150 2008-06-03
KR1020080052150A KR100983465B1 (ko) 2008-06-03 2008-06-03 레벨 감지 장치

Publications (2)

Publication Number Publication Date
WO2009148233A2 WO2009148233A2 (ko) 2009-12-10
WO2009148233A3 true WO2009148233A3 (ko) 2010-03-11

Family

ID=41398647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/002831 WO2009148233A2 (ko) 2008-06-03 2009-05-28 레벨 감지 장치

Country Status (4)

Country Link
US (1) US8789414B2 (ko)
KR (1) KR100983465B1 (ko)
CN (1) CN102057259B (ko)
WO (1) WO2009148233A2 (ko)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101156886B1 (ko) * 2008-11-04 2012-06-21 웅진코웨이주식회사 수위감지장치
US20120291541A1 (en) * 2010-10-15 2012-11-22 Dafan Liu Digital field-induction water-level intelligent sensing system and its implementation method
FR2982362B1 (fr) * 2011-11-09 2014-10-03 Ijinus Dispositif avec antenne capacitive pour mesurer un niveau de liquide
KR101344731B1 (ko) 2012-05-15 2013-12-24 주식회사 켐트로닉스 수위 레벨 센서용 ｐｃｂ
DE102013207446A1 (de) * 2013-04-24 2014-10-30 Skf Lubrication Systems Germany Ag Füllstandsmessanordnung
KR102101489B1 (ko) * 2013-10-29 2020-04-16 엘지전자 주식회사 가습기
TWI476378B (zh) * 2013-11-12 2015-03-11 Finetek Co Ltd Level and temperature sensing device
KR102073011B1 (ko) * 2013-12-18 2020-03-02 삼성전자주식회사 오일 검출 장치, 그를 가지는 압축기 및 압축기의 제어 방법
WO2016057131A1 (en) * 2014-10-08 2016-04-14 Semiconductor Components Industries, Llc Level sensor and method
KR20160123812A (ko) 2015-04-17 2016-10-26 이승영 정수기용 수위 검출 센서 보드 및 이를 이용한 수위 검출 장치
FR3037649B1 (fr) * 2015-06-16 2017-07-07 Coutier Moulage Gen Ind Dispositif et procede de mesure de hauteur de liquide dans un conteneur
ITUA20162704A1 (it) * 2016-04-19 2017-10-19 Bitron Spa Dispositivo sensore per rilevare la presenza di una sostanza elettroconduttiva in una regione spaziale e sue applicazioni.
KR20170003499A (ko) 2016-12-26 2017-01-09 이승영 정수기용 수위 검출 센서 보드 및 이를 이용한 수위 검출 장치
US10935508B2 (en) * 2017-08-28 2021-03-02 Xiamen Eco Lighting Co. Ltd. Liquid detection device and liquid detection system for abnormal liquid on a surface
CN107449488B (zh) * 2017-09-15 2023-11-10 北京帕克莱斯分析仪器有限公司 一种静电物位开关传感器及静电物位开关
KR102260386B1 (ko) * 2019-04-23 2021-06-03 권준모 감지장치
EP3754308B1 (en) * 2019-06-18 2023-08-16 Baumer A/S Sensor system
TWI730579B (zh) * 2020-01-06 2021-06-11 聯陽半導體股份有限公司 液位偵測器及液位偵測方法
US20210325232A1 (en) * 2020-04-17 2021-10-21 Goodrich Corporation Capacitive point source level sensor for potable water systems
KR102635906B1 (ko) 2021-07-22 2024-02-13 온솔텍 주식회사 정전용량 유량송신기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064753A (en) * 1974-12-12 1977-12-27 Drexelbrook Controls, Inc. RF admittance measuring method and apparatus for determining the level of a conductive liquid
KR20010051373A (ko) * 1999-11-19 2001-06-25 에섹 트레이딩 에스에이 용기의 예정된 내용물의 레벨을 감지하기 위한 센서
JP2007298362A (ja) * 2006-04-28 2007-11-15 Yazaki Corp 静電容量式液面レベルセンサ
JP2007298361A (ja) * 2006-04-28 2007-11-15 Yazaki Corp 静電容量式液面レベルセンサ

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO742093L (ko) * 1974-06-10 1975-12-11 Navaltronic As
US4166388A (en) * 1974-12-12 1979-09-04 Drexelbrook Controls, Inc. RF Admittance measuring method and apparatus for determining the level of a conductive liquid
US4749988A (en) * 1986-11-20 1988-06-07 Imtec Products, Inc. Non-invasive liquid level sensor
DE3828441A1 (de) * 1988-08-22 1990-03-15 Heinze Werner Fuellstandmessgeraet fuer blutreservoire, insbesondere von humanmedizinischen geraeten
US5121631A (en) * 1988-10-11 1992-06-16 Euromart Corporation Shielded level sensing system
US5315872A (en) * 1993-05-11 1994-05-31 Edo Corporation, Fiber Science Division Liquid level sensor for electrically conductive liquid
CA2128676C (en) * 1993-09-08 1997-12-23 John D. Sotack Capacitive sensor
US6490920B1 (en) * 1997-08-25 2002-12-10 Millennium Sensors Ltd. Compensated capacitive liquid level sensor
DE19757190A1 (de) * 1997-12-22 1999-06-24 Abb Research Ltd Kapazitiver Füllstandssensor mit integrierter Schmutzfilmdetektion
DE19949985C2 (de) * 1999-10-15 2001-08-16 Sie Sensorik Ind Elektronik Gm Kapazitiver Sensor zur Detektion des Füllstandes eines Mediums in einem Behälter
US6539797B2 (en) * 2001-06-25 2003-04-01 Becs Technology, Inc. Auto-compensating capacitive level sensor
CN2643294Y (zh) * 2003-09-03 2004-09-22 太原理工天成科技股份有限公司 电容式液位传感器
US7064560B2 (en) * 2004-01-06 2006-06-20 Ngk Spark Plug Co., Ltd. Liquid state detecting element and liquid state detecting sensor
CN100420924C (zh) * 2004-05-18 2008-09-24 日本特殊陶业株式会社 静电容量式液状态检测传感器
EP1677083A1 (fr) * 2004-12-22 2006-07-05 Roxer Industries S.A. Capteur de niveau d'un liquide.
JP4746479B2 (ja) * 2005-07-04 2011-08-10 日本特殊陶業株式会社 静電式液体状態検知装置
JP5133667B2 (ja) * 2007-02-23 2013-01-30 エスアイアイ・プリンテック株式会社 残量検知センサおよびそれを用いたインクジェットプリンタ
WO2010010683A1 (ja) * 2008-07-22 2010-01-28 パナソニック株式会社 液位センサ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064753A (en) * 1974-12-12 1977-12-27 Drexelbrook Controls, Inc. RF admittance measuring method and apparatus for determining the level of a conductive liquid
KR20010051373A (ko) * 1999-11-19 2001-06-25 에섹 트레이딩 에스에이 용기의 예정된 내용물의 레벨을 감지하기 위한 센서
JP2007298362A (ja) * 2006-04-28 2007-11-15 Yazaki Corp 静電容量式液面レベルセンサ
JP2007298361A (ja) * 2006-04-28 2007-11-15 Yazaki Corp 静電容量式液面レベルセンサ

Also Published As

Publication number Publication date
CN102057259A (zh) 2011-05-11
CN102057259B (zh) 2012-08-22
US20110259098A1 (en) 2011-10-27
KR100983465B1 (ko) 2010-09-24
KR20090126015A (ko) 2009-12-08
WO2009148233A2 (ko) 2009-12-10
US8789414B2 (en) 2014-07-29

Similar Documents

Publication Publication Date Title
WO2009148233A3 (ko) 레벨 감지 장치
WO2013184416A3 (en) Application of electrochemical impedance spectroscopy in sensor systems, devices, and related methods
WO2006111386A8 (de) Russsensor
WO2012142502A3 (en) Advanced analyte sensor calibration and error detection
CA2933495A1 (en) Non-intrusive temperature measurement assembly
NZ596554A (en) Determining paint sample volume characteristics with a sensor to emit and detect signals reflected from the sample and create data sets relating to the sample and a reference sample
WO2014053350A3 (de) Drucksensor mit deckschicht
MX2012008347A (es) Identificacion de elementos secos del nebulizador.
WO2008103700A3 (en) Process condition measuring device
WO2007112328A3 (en) Measurement of thickness of dielectric films on surfaces
WO2007126716A3 (en) Multi-zone capacitive force sensing device and method
TW200801468A (en) Printed circuit board with integral strain gage
WO2020251931A8 (en) Gas sensor with separate contaminant detection element
JP2016523356A5 (ko)
WO2008054511A3 (en) System for measuring electric signals
WO2014085649A3 (en) Differential proximity sensing and side detection for an electronic device
JP2012237696A5 (ko)
MX2013010528A (es) Dispositivo para medir características físicas y/o cambio en las características físicas en un material de hoja y una hoja adaptada para uso con dicho dispositivo.
WO2008157325A3 (en) Devices, systems, and methods for measuring glucose
WO2013124021A3 (de) Temperaturmessgerät, temperaturmessgerät-set und verfahren zur konfiguration eines mit einem thermoelement betreibbaren temperaturmessgeräts
WO2006023476A8 (en) Multiple axis acceleration sensor
WO2008146757A1 (ja) 物理量計測装置および物理量計測方法
WO2009055355A3 (en) Improved structure for capacitive balancing of integrated relative humidity sensor
BRPI0916212A2 (pt) método de calibragem de um sensor de posição em uma transmissão automotiva
WO2011100306A3 (en) Determination of physical connectivity status of devices based on electrical measurement

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980120693.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09758486

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 12996075

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 09758486

Country of ref document: EP

Kind code of ref document: A2