In this paper, a high
frequency driving circuit of surface acoustic wave transducer has been designed
to separate oil from oil/water mixed droplet. The transmission frequency of the
surface acoustic wave transducer driving circuit can be up to 1 MHz. The
transmit frequency of conventional ultrasonic driving circuit is mostly 40 kHz.
However, the high transmit frequency driving circuit presents a good stability
and accuracy. By establishing the surface acoustic wave driving circuit model,
the actual circuit and
debugging verification, the driving circuit can excite the frequency signal
required for the experiment. Thus, the surface acoustic wave driving circuit
could provide necessary technical support for application in other fields.
Yamamoto. M., Tamura, K., Yanagisita, S. and Inagaki, S. (2009) An Ultrasonic Flow Measurement System for Sewage and Waste Water. Transactions of the Society of Instrument & Control Engineers, 14, 564-571.
Agostini, M., Grecoa, G. and Cecchini, M. (2018) A Rayleigh Surface Acoustic Wave (R-SAW) Resonator Biosensor Based on Positive and Negative Reflectors with Sub-Nanomolar Limit of Detection. Sensors and Actuators B: Chemical, 254, 1-7.
Schmitt, M., Stich, S., Fromm, S., Fischer, F. and Lindner, G. (2010) Detection and Removal of Droplets on Non-Piezoelectric Substrates via Mode Conversion of Lamb Waves. British Journal for the Philosophy of Science, 143, 304-308.
Watanabe, S., Matsumoto, S. and Higurashi, T. (2015) Almost Complete Separation of a Fluid Component from a Mixture Using Burgers Networks of Microseparators. Journal of the Physical Society of Japan, 84, Article ID: 043401 (1-4).