WO1999020983A3 - Systems and methods using an optical sensor for liquid metering - Google Patents

Systems and methods using an optical sensor for liquid metering Download PDF

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Publication number
WO1999020983A3
WO1999020983A3 PCT/US1998/022192 US9822192W WO9920983A3 WO 1999020983 A3 WO1999020983 A3 WO 1999020983A3 US 9822192 W US9822192 W US 9822192W WO 9920983 A3 WO9920983 A3 WO 9920983A3
Authority
WO
WIPO (PCT)
Prior art keywords
container
liquid
boundary
metering
sensor
Prior art date
Application number
PCT/US1998/022192
Other languages
French (fr)
Other versions
WO1999020983A2 (en
Inventor
Steve Miller
Christopher Kilcoin
Original Assignee
Argonaut Technologies Inc
Steve Miller
Christopher Kilcoin
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 Argonaut Technologies Inc, Steve Miller, Christopher Kilcoin filed Critical Argonaut Technologies Inc
Priority to AU11069/99A priority Critical patent/AU1106999A/en
Publication of WO1999020983A2 publication Critical patent/WO1999020983A2/en
Publication of WO1999020983A3 publication Critical patent/WO1999020983A3/en

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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
    • 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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B01J2219/00389—Feeding through valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00277—Apparatus
    • B01J2219/00351—Means for dispensing and evacuation of reagents
    • B01J2219/00418—Means for dispensing and evacuation of reagents using pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/00583—Features relative to the processes being carried out
    • B01J2219/00585—Parallel processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
    • B01J2219/0068—Means for controlling the apparatus of the process
    • B01J2219/00698—Measurement and control of process parameters
    • C—CHEMISTRY; METALLURGY
    • C40—COMBINATORIAL TECHNOLOGY
    • C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
    • C40B60/00—Apparatus specially adapted for use in combinatorial chemistry or with libraries
    • C40B60/14—Apparatus specially adapted for use in combinatorial chemistry or with libraries for creating libraries

Abstract

A metering assembly uses light refraction to determine the liquid level in a metering container (20). An image of a liquid-air boundary in the metering container (20) is projected onto a sensor (36) which accurately tracks the movement of the boundary. By tracking the location of this boundary, the assembly can determine when the container (20) has the desired level of liquid (6) being metered. In one embodiment, the assembly for use in a combinatorial chemistry synthesis apparatus has a generally transparent or translucent container (20) adapted to hold a liquid (6) and an optical liquid level sensor (30) coupled to the container. The sensor (30) comprises a light source (32), a photosensor (36), and a focusing device (34) positioned at a distance from the light source (32) to reproduce an image of a liquid-air boundary in the container onto the photosensor (36).
PCT/US1998/022192 1997-10-22 1998-10-21 Systems and methods using an optical sensor for liquid metering WO1999020983A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11069/99A AU1106999A (en) 1997-10-22 1998-10-21 Systems and methods using an optical sensor for liquid metering

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US6313797P 1997-10-22 1997-10-22
US60/063,137 1997-10-22
US8704498A 1998-05-29 1998-05-29
US09/087,044 1998-05-29

Publications (2)

Publication Number Publication Date
WO1999020983A2 WO1999020983A2 (en) 1999-04-29
WO1999020983A3 true WO1999020983A3 (en) 1999-08-26

Family

ID=26743085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/022192 WO1999020983A2 (en) 1997-10-22 1998-10-21 Systems and methods using an optical sensor for liquid metering

Country Status (2)

Country Link
AU (1) AU1106999A (en)
WO (1) WO1999020983A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1021669C2 (en) * 2002-10-16 2004-04-20 Paul Bruggeman Liquid level measuring device.
EP1722204A1 (en) * 2005-05-13 2006-11-15 RANCILIO MACCHINE PER CAFFE' S.p.A. Optical device for detecting a liquid level in an infusion machine, related apparatus and method
CN100394147C (en) * 2006-01-19 2008-06-11 昆明利普机器视觉工程有限公司 Water level meter with digital video frequency
US7786457B2 (en) 2006-06-28 2010-08-31 Alcon, Inc. Systems and methods of non-invasive level sensing for a surgical cassette
US7872746B2 (en) * 2006-12-22 2011-01-18 Alcon, Inc. Single light source uniform parallel light curtain
NO328037B1 (en) * 2008-05-22 2009-11-23 Knut Inge Bonvik System for real-time long-term regulation and / or real-time spectroscopy of a given amount of urine in patients
US20100134303A1 (en) * 2008-12-02 2010-06-03 Perkins James T Fluid level detector for an infusion fluid container
RU2726061C2 (en) * 2014-12-22 2020-07-08 Реналсенс Лтд. Methods, device and system for urine analysis
WO2017075153A1 (en) * 2015-10-27 2017-05-04 Haemonetics Corporation System and method for measuring volume and pressure
US10520300B2 (en) 2017-05-17 2019-12-31 A.C. Dispensing Equipment Inc. Optical liquid level measurement system for dispensing apparatus
CN109925979A (en) * 2019-04-24 2019-06-25 四川轻化工大学 Tubular type gas-liquid interface reactor, tube-type chemical luminescence detection apparatus and detection method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636360A (en) * 1968-05-13 1972-01-18 Hitachi Ltd Apparatus for detection of liquid level in transparent tube comprising photocell located to receive light which has been totally reflected
US3908129A (en) * 1974-04-08 1975-09-23 Datagage Systems Inc Manometer level detector
US4223231A (en) * 1977-09-17 1980-09-16 Hajime Sugiyama Liquid level monitor apparatus
US4297588A (en) * 1979-02-06 1981-10-27 Hastbacka Albin A Electro-optical level
US4857050A (en) * 1987-09-23 1989-08-15 Fisher Scientific Company Ratiometric air-in-line detector
US4904878A (en) * 1988-08-12 1990-02-27 Caterpillar Inc. Multi-point refractive liquid level sensor
US4920336A (en) * 1988-11-22 1990-04-24 Fisher Scientific Company Method and apparatus for monitoring the level of the contents in a container
US4989452A (en) * 1987-11-09 1991-02-05 Solinst Canada Ltd. Liquid-level detector
US5724142A (en) * 1996-03-29 1998-03-03 Dade International Inc. Method and apparatus for measuring and controlling the volume of a liquid segment in a tube

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636360A (en) * 1968-05-13 1972-01-18 Hitachi Ltd Apparatus for detection of liquid level in transparent tube comprising photocell located to receive light which has been totally reflected
US3908129A (en) * 1974-04-08 1975-09-23 Datagage Systems Inc Manometer level detector
US4223231A (en) * 1977-09-17 1980-09-16 Hajime Sugiyama Liquid level monitor apparatus
US4297588A (en) * 1979-02-06 1981-10-27 Hastbacka Albin A Electro-optical level
US4857050A (en) * 1987-09-23 1989-08-15 Fisher Scientific Company Ratiometric air-in-line detector
US4989452A (en) * 1987-11-09 1991-02-05 Solinst Canada Ltd. Liquid-level detector
US4904878A (en) * 1988-08-12 1990-02-27 Caterpillar Inc. Multi-point refractive liquid level sensor
US4920336A (en) * 1988-11-22 1990-04-24 Fisher Scientific Company Method and apparatus for monitoring the level of the contents in a container
US5724142A (en) * 1996-03-29 1998-03-03 Dade International Inc. Method and apparatus for measuring and controlling the volume of a liquid segment in a tube

Also Published As

Publication number Publication date
WO1999020983A2 (en) 1999-04-29
AU1106999A (en) 1999-05-10

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