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1. WO2022212592 - ULTRASONIC LIQUID LEVEL SENSING

Publication Number WO/2022/212592
Publication Date 06.10.2022
International Application No. PCT/US2022/022666
International Filing Date 30.03.2022
IPC
G01F 23/2962 2022.1
G01F 23/2965 2022.1
A47J 31/00 2006.1
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
31Apparatus for making beverages
B67D 1/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
67OPENING OR CLOSING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
DDISPENSING, DELIVERING, OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
1Apparatus or devices for dispensing beverages on draught
B67D 3/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
67OPENING OR CLOSING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
DDISPENSING, DELIVERING, OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
3Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
G01F 23/284 2006.1
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of 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
28by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
284Electromagnetic waves
CPC
A47J 31/4482
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
31Apparatus for making beverages
44Parts or details ; or accessories; of beverage-making apparatus
4482Details allowing to adapt the beverage-making apparatus to the size of the brewing vessel or the beverage container, e.g. with adjustable support for the beverage container or adjustable hot water outlet
B67D 1/1238
BPERFORMING OPERATIONS; TRANSPORTING
67OPENING, CLOSING ; OR CLEANING; BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
1Apparatus or devices for dispensing beverages on draught
08Details
12Flow or pressure control devices or systems ; , e.g. valves, gas pressure control, level control in storage containers
1202Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed
1234to determine the total amount
1238comprising means for detecting the liquid level in vessels to be filled, e.g. using ultrasonic waves, optical reflexion, probes
G01F 23/284
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of 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
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
284Electromagnetic waves
G01F 23/292
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of 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
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
284Electromagnetic waves
292Light ; , e.g. infra-red or ultra-violet
G01F 23/2962
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of 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
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
296Acoustic waves
2962Transit time measurement
G01F 23/2965
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of 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
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
296Acoustic waves
2965measuring wave attenuation
Applicants
  • CHIRP MICROSYSTEMS, INC. [US]/[US]
Inventors
  • YANG, Cristabel
  • PRZYBYLA, Richard J.
  • KLINE, Mitchell
Agents
  • SWIATEK, Maria S.
Priority Data
17/707,68829.03.2022US
63/168,07530.03.2021US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ULTRASONIC LIQUID LEVEL SENSING
(FR) DÉTECTION ULTRASONORE DE NIVEAU DE LIQUIDE
Abstract
(EN) Systems and methods for ultrasonic liquid level sensing. A circuit causes an ultrasonic transducer to transmit a sequence of ultrasonic pulses and receive a sequence of reflected signals. Each reflected signal includes at least one first reflection associated with at least one non-moveable surface and at least one second reflection associated with a moveable surface. A digital controller, for each reflected signal: determines at least one of a magnitude and a variance of the respective signal to form at least one output signal, identifies, in the at least one output signal, at least one first pulse indicative of the at least one non-moveable surface and at least one second pulse indicative of the moveable surface, and determines a distance of the moveable surface relative to the at least one non-moveable surface based on the identified first and second pulses.
(FR) Systèmes et procédés de détection ultrasonore de niveau de liquide. Un circuit amène un transducteur ultrasonore à transmettre une séquence d'impulsions ultrasonores et à recevoir une séquence de signaux réfléchis. Chaque signal réfléchi comprend au moins une première réflexion associée à au moins une surface non mobile et au moins une seconde réflexion associée à une surface mobile. Un dispositif de commande numérique, pour chaque signal réfléchi : détermine une amplitude et/ou une variance du signal respectif pour former au moins un signal de sortie ; identifie, dans le signal ou les signaux de sortie, au moins une première impulsion indiquant la surface ou les surfaces non mobiles et au moins une seconde impulsion indiquant la surface mobile ; et détermine une distance de la surface mobile par rapport à la surface ou aux surfaces non mobiles sur la base des première et seconde impulsions identifiées.
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