A new self-sensing approach for actuation and readout of piezoelectric resonating sensor

In this paper we proposed a new approach to actuate and readout of resonating piezoelectric sensors to realize concept of self-sensing. In the circuit three transistors are used to differentiate between actuation and readout modes. We evaluated a given piezoelectric resonating sensor and the proposed circuit analytically and with simulations. We also evaluated the applicability of our circuit for mass detection purposes and showed that piezoelectric resonant sensor with our proposed circuit can be a good candidate for mass detection in picogram range.