Research on sound pressure-vibration velocity sensor based on acoustic thermal field effects

Rongji Xie; Haiding Zhang; Bo Long; Xiaolong Wang; Tao Wu

doi:10.1117/12.3038668

22 July 2024 Research on sound pressure-vibration velocity sensor based on acoustic thermal field effects

Rongji Xie, Haiding Zhang, Bo Long, Xiaolong Wang, Tao Wu

Proceedings Volume 13222, International Conference on Signal Processing and Communication Security (ICSPCS 2024); 132220R (2024) https://doi.org/10.1117/12.3038668
Event: Third International Conference on Signal Processing and Communication Security (ICSPCS 2024), 2024, Chengdu, China

Abstract

A sound vibration velocity measurement structure based on acoustic thermal field effects was studied. The measurement structure uses two parallel and suspended slender platinum wires, which are heated and cause proportional resistance changes under the disturbance of sound waves. The difference in resistance between the two platinum wires is detected to obtain the sound particle vibration velocity. The acoustic thermal field of the acoustic vibration velocity measurement structure was simulated and calculated using finite element method. New sensors are formed by integrating sound vibration velocity sensors and sound pressure transducer. The performance of the sensor was experimentally tested in an anechoic chamber. The experimental results indicate that the sound pressure-vibration velocity sensor has good frequency response characteristics, sensitivity characteristics, and directionality. Therefore, this sensor can be widely used in various near-field acoustic measurements, sound arrays, and sound source localization fields.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Rongji Xie, Haiding Zhang, Bo Long, Xiaolong Wang, and Tao Wu "Research on sound pressure-vibration velocity sensor based on acoustic thermal field effects", Proc. SPIE 13222, International Conference on Signal Processing and Communication Security (ICSPCS 2024), 132220R (22 July 2024); https://doi.org/10.1117/12.3038668

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