Title:
MEASUREMENT METHOD AND MEASUREMENT DEVICE FOR REMAINING QUANTITY OF LIQUID IN LIQUID STORAGE CONTAINER
Document Type and Number:
WIPO Patent Application WO/2024/029764
Kind Code:
A1
Abstract:
The present invention is a measurement method for the remaining quantity of liquid in a liquid storage container, the method comprising the steps of: discharging liquid in a liquid storage container to the outside through a suction pipe inserted into the liquid storage container; observing, by a vision device directed to a light-transmission portion of the suction pipe, the size or number of bubbles contained in liquid passing through the light-transmission portion; estimating the remaining quantity of liquid on the basis of the observed size and number of bubbles. In addition, the method further comprises a remaining quantity estimation step using returning ultrasound waves, and the remaining quantity estimation step using returning ultrasound waves comprises the steps of: oscillating ultrasound waves from an ultrasonic generator to the inside of the liquid storage container; receiving ultrasound waves returned after the oscillation and analyzing the waveform of the ultrasound waves; and estimating the remaining quantity of liquid by comparison of the waveform of the ultrasound waves with pre-provided reference data.
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Inventors:
LEE JAE CHAN (KR)
Application Number:
PCT/KR2023/009764
Publication Date:
February 08, 2024
Filing Date:
July 10, 2023
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01F23/292; G01F23/296; G01F23/80; G01N15/02; G06N20/00
Domestic Patent References:
| WO2021053856A1 | 2021-03-25 |
Foreign References:
| KR20130040948A | 2013-04-24 | |||
| JP2002519704A | 2002-07-02 | |||
| JP2011038975A | 2011-02-24 | |||
| JP2004333314A | 2004-11-25 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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