ULTRASONIC MEASUREMENT DEVICE AND A METHOD FOR OPERATING THE SAME

摘要

A method for operating an ultrasonic device comprising a first and second ultrasonic transducers, includes driving the first and second transducers at a driving frequency such that the first and second transducers generate a first and a second signals, respectively. The method also includes sensing the second signal at the first transducer to produce a first measurement signal and sensing the first signal at the second transducer to produce a second measurement signal. The method further includes identifying a first set of data-points in the first measurement signal and a second set of data-points in the second measurement signal. The method also includes generating a frequency data-series using the first set of data-points and a corresponding data-point in the second set of data-points. The method also includes performing statistical operations based on the frequency data-series and configuring an operating frequency for driving the first and second transducers using the operations.