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. 07, 2015
Filed:
Nov. 25, 2010
Nicolas Geneste, Paris, FR;
Gwénaël Esteve, Paris, FR;
Nicolas Geneste, Paris, FR;
Gwénaël Esteve, Paris, FR;
Sagem Defense Securite, Paris, FR;
Abstract
A method of detecting a fault of a frequency sensor having a bias resistor and associated with a rotary member. The following steps are performed while the rotary member is stationary: injecting into the bias resistor of the sensor inverted alternating signals (S, S) comprising at least one first alternation (A) and at least one second alternation (A), the first alternation being of amplitude greater than the amplitude of the second alternation; and detecting a frequency of an output signal (S″) from the sensor. A measurement circuit implementing the method is also provided.
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