Method and system for fluid surface detection
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United States of America Patent
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Sep 20, 2016
Grant Date -
Jun 5, 2014
app pub date -
Nov 27, 2013
filing date -
Dec 4, 2012
priority date (Note) -
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Abstract
The present invention pertains to a method for detecting a fluid surface, comprising the following steps: providing at least one probe having an electric capacitance with respect to its surroundings; moving the probe into or out of a fluid; charging the probe by applying a periodic first electric signal to the probe for activating the probe; applying a periodic third electric signal to one or more electrically conductive regions different from the probe simultaneously with applying the first electric signal to the probe, wherein the third electric signal corresponds to the first electric signal or an amplified/damped first electric signal; at least partially discharging the probe so as to obtain a discharging current; detecting a second electric signal based on the discharging current; analyzing the second electric signal or a signal derived from the second electric signal with respect to the capacitance of the probe; identifying the fluid surface of the fluid based on a change of the capacitance of the probe. It further relates to a corresponding system adapted to perform the method.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ROCHE MOLECULAR SYSTEMS INC | 4300 HACIENDA DRIVE PLEASANTON CA 94588 |
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Zuppiger, Adelrich | Siebnen, CH | 4 | 20 |
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