Title:
TARGET MATERIAL SENSING USING RESONANT CIRCUIT WITH SENSING CAPACITOR AND ELECTRICAL ISOLATION
Document Type and Number:
WIPO Patent Application WO/2019/205085
Kind Code:
A1
Abstract:
A system (100) includes a conductive element (102). The system also includes a resonant circuit (110) having a sensing capacitor (103) arranged such that an amount of target material in a sensing zone (108) of the sensing capacitor (103) changes a capacitance of the sensing capacitor (103), wherein the conductive element (102) is electrically isolated from at least part of the resonant circuit (110). The system (100) also includes a resonant circuit analyzer (114) configured to detect a resonant frequency of the resonant circuit (110) and to output a digitized analyzer signal based on the resonant frequency. The system (100) also includes a processor (116) configured to receive the digitized analyzer signal, to determine a target material estimate based on the digitized analyzer signal, and to output the target material estimate or a signal derived from the target material estimate to an output device (118).
Inventors:
SEIDL MICHAEL (DE)
WANG YICHANG (CN)
WANG YICHANG (CN)
Application Number:
PCT/CN2018/084792
Publication Date:
October 31, 2019
Filing Date:
April 27, 2018
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
F25D21/02
Foreign References:
| JPH0213774A | 1990-01-18 | |||
| US20130024169A1 | 2013-01-24 | |||
| JP2013134227A | 2013-07-08 | |||
| GB2496136A | 2013-05-08 |
Attorney, Agent or Firm:
LEE AND LI - LEAVEN IPR AGENCY LTD. (CN)
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