We propose a new approach for the extraction of the equivalent parameters of quartz tuning forks used as sensors by means of noise measurements. Noise is used as the test signal for the determination, by means of spectral analysis, of the frequency response of a circuit including the quartz tuning fork whose parameters need to be determined. A new approach for the analysis of strongly peaked noise spectra was developed in order to allow the correct measurement of the strongly peaked noise spectrum at the output of the system, which is the result of the high-quality factor of any quartz tuning fork-based sensor. With the approach we propose, the best compromise in terms of accuracy and measurement time can be obtained in a single measurement run. The performances of the approach we propose are discussed in comparison with those that can be obtained from a swept spectrum approach in the same operating conditions.

中文翻译：

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窄带谱估计的精确QTF传感方法

我们提出了一种通过噪声测量来提取用作传感器的石英音叉的等效参数的新方法。噪声被用作测试信号，用于通过频谱分析确定电路的频率响应，该电路包括需要确定参数的石英音叉。开发了一种用于分析强峰值噪声频谱的新方法，以允许在系统的输出端正确测量强峰值噪声频谱，这是任何基于石英音叉的高质量因子的结果。传感器。通过我们提出的方法，可以在一次测量中获得最佳的精度和测量时间折衷。