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:
Oct. 24, 2006
Filed:
May. 24, 2005
Ruth Bernhard, Garching, DE;
Ruth Bernhard, Garching, DE;
GSF - Forschungszentrum für Umwelt und Gesundheit GmbH, Oberschleissheim, DE;
Abstract
In a method and device for determining the moisture content and conductivity in the ground and in bulk materials, a capacitive sensor is disposed in the ground or the bulk material, the sensor is charged from a constant external voltage supply with a given initial current from a given first voltage threshold value to a given second voltage threshold value and either a voltage/time diagram is determined or a first charging time required for charging the sensor from the first to the second voltage threshold values by the constant external voltage supply is determined and a second charging time is determined wherein either the initial current and/or at least one of the two voltage threshold values are altered and the water content and the conductivity are determined by verification of the two charging times or of the voltage/time diagram.