Resonance Mode Acoustic Displacement Transducer

Several linear displacement transducers are used in industry and many technical applications. In this research, a linear displacement transducer, which uses a standing acoustic wave within a tube with variable length, is designed, built and tested. A standard PC will be utilized for data processing and storage. The operation principle of this transducer is based on measuring the resonance frequency of the created standing acoustic within tube. A relationship between the tube length and the measured frequency is determined. Besides the designed measurement system for this transducer, three models of transducer prototype will be tested to study the effect of ambient temperature and diameter of the tube on the resulting measured frequency.