Abstract
The authors have presented a new sensing device that employs a piezoelectric thickness vibrator operating in a trapped-energy mode for detecting slight variation in liquid level. To simulate its sensor operation, the device should be expressed by an equivalent electric network. In this study, the sensor is modeled by modifying an equivalent electric network representing the propagation of a thickness-vibration mode along the piezoelectric plate, and thereby its operation is simulated. The variation in G with the liquid level has been computed using this network model, and the feasibility of the model is confirmed.
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