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:
Nov. 03, 2015
Filed:
Jul. 03, 2012
Régis Quer, Saint Peray, FR;
Sébastien Simoens, Lyons, FR;
Pierre-olivier Lefort, Valence, FR;
Thales, Neuilly sur Seine, FR;
Abstract
A micro-system, for example a micro-sensor, includes a resonatorwith vibrating element(s)receiving an excitation signal E of a loopfor automatic gain control, as a function of an amplitude setpoint (C) and providing as output a signal y(t) defined by a peak amplitude having a nominal value Adependent on the said setpoint and a resonant frequency. The micro-sensor integrates a circuit for measuring a quality factor of the resonator based on a measurement of an attenuation of the output signal during a momentary phase of cutoff of the excitation signal E applied to the resonator. This circuit for measuring the quality factor is configured so as to activate the excitation signal cutoff phase, for a duration of cutoff Tsuch that at the end of the cutoff phase, the peak amplitude of the output signal is attenuated by factor to the nominal peak amplitude Aat the start of the cutoff phase, by a factor k with 1<k≦2.