Measuring system having electromechanical resonators, method for manufacturing such a system, and method for reading at least two electromechanical resonators

摘要

A measuring system including: at least two electromechanical resonators each having a resonant frequency varying around an offload resonant frequency according to a physical quantity to be measured; at least one reading device connected to inputs of the resonators and configured to supply an excitation signal on the inputs; and a memory in which is recorded, for each resonator, offload resonance information relating to the offload resonant frequency of the resonator. Each reading device is configured to determine the resonant frequency of one or more resonators selected for reading by configuring at least one element of the reading device using the offload resonance information stored for each selected resonator.

主权项

1. A measuring system, comprising:
at least two electromechanical resonators, each having a resonant frequency varying around an offload resonant frequency according to a physical quantity to be measured, each resonator including:
an input configured to receive an excitation signal,an output configured to supply an output signal in response to the excitation signal, the output signal having resonance at the resonant frequency of the resonator, anda mechanical structure defining the offload resonant frequency, the mechanical structures of the resonators being different from one another so that the offload resonant frequencies are different from one another, all inputs of the resonators being connected together to receive a same excitation signal; an adding device for adding the output signals as a total output signal, a memory in which is recorded, for each resonator, offload resonance information relating to the offload resonant frequency of the resonator, a reading device configured to determine the resonant frequency of one resonator selected for reading, wherein the reading device is configured to receive the total output signal, wherein the reading device includes a closed-loop configured to supply an excitation signal to the resonators according to the total output signal, wherein, for determining the resonant frequency of the selected resonator, the reading device is configured to configure, before reading, at least one element of the closed-loop from the offload resonance information stored for the selected resonator, and wherein, for determining the resonant frequency of the selected resonator, the closed-loop with the configured element is configured to attach, after a time, to the resonant frequency of the selected resonator.