Investigation of High Frequency Ultrasound Imaging Scanner Driven by a Piezoelectric Bimorph

Piezoelectric actuators are widely used in various high-end equipment due to their simple structures, power off self-locking, weak electromagnetic interference and high driving accuracy. In this paper, a high frequency ultrasound imaging scanner driven by a piezoelectric bimorph is presented. In this work, the scanning parameters related to ultrasound imaging performance were theoretically analyzed, the experimental platform was set up and imaging experiments were carried out, and the imaging results of the scanner were compared and analyzed. The results demonstrate that the preliminary imaging of tungsten wire phantom has been realized using the fabricated high frequency ultrasound scanner driven by piezoelectric bimorph, and the scanning speed is fast, which can reach 208 frames/s. Compared to the scanning system with the electromagnetic motor, the presented ultrasound scanner has a higher signal-to-noise ratio due to less electromagnetic interference.