Lead-Free Piezoelectric Ultrasonic Transducer and Its Application in Car Reversing Aid System
Lead zirconate titanate (PZT) and related composites have dominated the application of high performance piezoelectric actuators and transducers owing to their superior dielectric, piezoelectric properties, and electromeohanical coupling coefficients. However, PZT contains more than 60 weight percent lead, which is toxic to environment. The paper is dedicated to develop a lead-free ultrasonic transducer used for car reversing aid system. We have developed a leadfree ultrasonic transducer with BaTiO3-based piezoelectric ceramic, and then an excellent signal processing circuit is designed to match the new transducer. The lead-free ultrasonic ranging system is tested and shows a good performance with a measuring range larger than 200 cm and an absolute error within 2 cm.
piezoelectric ultrasonic transducer car reversing aid system lead-free
Ligang Wang Yi Yang Tianling Ren Yufeng Wang Litian Liu Jialiang Zhang Chunlei Wang
Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technolog School of Physics & Microelectronic Shandong University Jinan, China
国际会议
三峡
英文
838-841
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）