Research and design of resonant mass sensor based on tapered oscillating element

Qing Ding; Jianguo Liu

doi:10.1117/12.837932

23 November 2009 Research and design of resonant mass sensor based on tapered oscillating element

Qing Ding, Jianguo Liu

Proceedings Volume 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications; 75080C (2009) https://doi.org/10.1117/12.837932
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

Resonant sensors have many advantages such as high sensitivity, long term stability and easy interfacing with digital signal processing. In this paper, we design and realize a resonant mass sensor. In order to get resonator of high Q value, tapered and thin oscillating tube is designed as the oscillator. Self-excited oscillation mode and closed-loop driving circuit is used, which enables the oscillating frequency stabilize in the natural frequency of the oscillator. Meanwhile, automatic gain control circuit is designed to keep constant amplitude of oscillating. Finally, this mass sensor achieve successful in measurement of concentration of aerosol. The experimental results show that the mass sensor takes advantages of compact structure, high precision and high reliability.

Citation Download Citation

Qing Ding and Jianguo Liu "Research and design of resonant mass sensor based on tapered oscillating element", Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75080C (23 November 2009); https://doi.org/10.1117/12.837932

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