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. 15, 2011
Filed:
Oct. 26, 2006
Volodia Naydenov, Louvain-La-Neuve, BE;
Volodia Naydenov, Louvain-La-Neuve, BE;
Inergy Automotive Systems Research (S.A.), Brussels, BE;
Abstract
Capacitive gauge for fuel tank comprising a measurement capacitor, a reference capacitor and at least one standard capacitive device, fed by and connected to an electronic interpretation circuit comprising switches for charging and discharging the capacitors and the capacitive device at a certain frequency; an integrator to which the charges of the measurement or reference capacitor can be transmitted and accumulated before being discharged into the standard capacitive device; a comparator for comparing an output value of the integrator with a threshold value; a counter; and a processor or computation unit for calculating the level of liquid in a fuel tank according to the equation:/()]·[()/],where n are the values read by the counter respectively for the capacitance of the reference capacitor when empty (n), for the capacitance of the reference capacitor immersed in the fuel (n), for the capacitance of the measurement capacitor when empty (n) and for the capacitance of the measurement capacitor in the liquid to be measured (n); the standard capacitive device comprising at least two standard capacitors with electrical connections to the measurement capacitor.