The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2019
Filed:
Aug. 17, 2017
Ksr Ip Holdings, Llc, Wilmington, DE (US);
Joong K. Lee, Chatham, CA;
Ryan W. Elliott, Chatham, CA;
KSR IP Holdings, LLC, Wilmington, DE (US);
Abstract
The present current steering bridge may be used as a sensor for detecting a level of fluid within a single reservoir or multiple reservoirs. The sensor is a modified LC oscillator with a four-megahertz exciting signal creating a low impedance output and has ratio-metric processing capabilities. Because of the low impedance output, a high signal to noise ratio is achievable. This high signal to noise ratio enables accurate measurement of small changes of liquid level. Further, ratio-metric processing permits the analysis of the ratio of current reference to signal output. As such, this arrangement provides an output that is independent of temperature, EMC, aging and other environmental noises. Further, the sensor references the existing environment, and is fluid independent within a specified range of dielectric constant. As such, feedback can compensate for dielectric constant changes of the liquid, allowing the same sensor to work in different liquids.