MULTIPLICATION OF SENSITIVITY OF A RESONANT SENSOR

The invention relates to a multiplier of sensitivity of a resonant sensor (quartz crystal) used in specific applications for a quartz crystal microbalance. According to the invention, the multiplier comprises a QCM oscillator () whose output signal is applied to a frequency multiplier (), followed b...

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Hauptverfasser: TUNYAGI ARTHUR ROBERT, POPESCU OCTAVIAN, SILAGHI ANDREEA MARIA, BURDA IOAN, SIMON SIMION
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The invention relates to a multiplier of sensitivity of a resonant sensor (quartz crystal) used in specific applications for a quartz crystal microbalance. According to the invention, the multiplier comprises a QCM oscillator () whose output signal is applied to a frequency multiplier (), followed by a mixer () where a signal () from a reference oscillator () is also applied, at the mixer output () there is placed a low-pass filter () which restores the signal () on the resonance frequency of the quartz crystal. Invenţia se referă la un multiplicator de sensibilitate pentru un senzor rezonant (cristal de cuarţ) utilizat în aplicaţii specifice pentru o microbalanţă cu cristal de cuarţ. Multiplicatorul conform invenţiei este constituit dintr-un oscilator () QCM, al cărui semnal de ieşire este aplicat unui multiplicator () de frecvenţă, urmat de un mixer () unde este aplicat şi un semnal () de la un oscilator () de referinţă, la ieşirea mixerului () se află un filtru () trece jos ce reface semnalul () pe frecvenţa de rezonanţă a cristalului de cuarţ.