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:
Apr. 03, 2018
Filed:
Nov. 27, 2015
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Institut National DE LA Sante ET DE LA Recherche Madicale (Inserm), Paris, FR;
Alexandre Fouchard, Grenoble, FR;
Stephane Bonnett, Lyons, FR;
Olivier David, Le Sappey, FR;
Pascale Pham, Crolles, FR;
Commissariat à l'énergie atomique et aux énergies alternatives, Paris, FR;
INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM), Paris CEDEX 13, FR;
Abstract
An EIT or differential EIT method in which measurements of voltage differences between electrodes are performed according to a measurement configuration in which at least one of the electrodes injecting a current in the medium being investigated is also used for performing a measurement of the voltage difference. The contact impedances of the different electrodes are measured thanks to a counter-electrode having a contact area with the medium much higher than the contact area of a unit electrode. The measurement of a contact impedance is performed by impedance spectroscopy by comparison with the impedance spectrum of an equivalent circuit. The contact impedances allow voltage drops in the injection electrodes to be calculated the voltage differences between these electrodes and to be corrected. Alternatively, the contact impedances can be used to correct or complete the direct model.