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:
Mar. 17, 2015
Filed:
Apr. 11, 2011
Somnath Mukherjee, Milpitas, CA (US);
Somnath Mukherjee, Milpitas, CA (US);
Fluid Management Systems, Inc, Lexington, KY (US);
Abstract
An apparatus and method is described for measuring non-invasively level of contents inside an array of containers without setting up any electrodes or attaching sensors around the containers, or inserting of a probe inside. Electromagnetic waves are launched from the bottom of the containers using launchers embedded in a tray the containers rest on. These waves travel through the bulk of the contents inside the container using a mode of propagation similar to dielectric waveguides or optical fibers and set up standing waves due to reflection at the content-air interface. The level inside the container is a function of the complex reflection coefficient (magnitude and phase) at the launcher input and can be thus determined by measuring the complex reflection coefficient.