Patent ID: 6941809

Claim:
A method for accelerometer measurement by determination of the value, compensated as a function of temperature, of an acceleration on the basis of determinations of frequencies made on at least one accelerometer device having two vibrating resonators of similar geometries working respectively in stress states of opposite signs, characterized in that it comprises the steps which follow: the device being subjected to a component of acceleration (γ), the frequencies f 1 (at 10 ) and f 2 (at 11 ) of the respective vibrations of the two vibrating resonators are determined, given that the respective values of these two frequencies are influenced by the acceleration (γ) and by the temperature (T); the sum f 1 +f 2 of the two determined frequencies is determined (at 12 ), given that this sum is influenced by the temperature; on the basis of a pre-established correlation of the variation of the quantity f 1 +f 2 as a function of temperature (at 14 ), the possible temperature values T i corresponding to the value of the above determined sum f 1 +f 2 are plotted (at 13 ); the value (G mes ) of a magnitude representative of the temperature in proximity to the device having two vibrating resonators is measured; with the aid of a previously established transfer function H, an estimated value G estimated =H(G mes ) of above said magnitude is determined on the basis of said measured value (G mes ), this estimated magnitude being representative of the estimated temperature of the vibrating resonators; on the basis of the estimated value (G estimated ) of said magnitude and of the possible temperature values (T i ), the probabilities P(T i ) that each possible value (T i ) is the exact value of the temperature of the resonators is determined (at 18 ), for each possible value (T i ); a weighted value T of the temperature of the vibrating resonators is calculated (at 19 ) T=ΣP(T i )×T i ; and on the basis of one or more determined frequencies f 1 and f 2 and of the weighted value T of the temperature, the temperature-compensated value of the acceleration undergone by the accelerometer device is determined (at 21 ).