Application of Lead-free piezoelectric materials for car reversing aid system
Xian（2009）
Abstract
The ultrasonic ranging system is widely used in automobiles, mobile robots, industrial control systems, etc. Ultrasonic transducer is the core component of car reversing aid system (CRAS). At present, Lead Zirconate Titanate (PZT) is generally used as piezoelectric material for ultrasonic transducer. In this paper, a method of successful use of Barium Titanate (BT) material in transducer application is proposed. Actual measurement shows the measurement error is within 2 cm, and the measurement range is larger than 170 cm.
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Key words
piezoelectric materials,distance measurement,batio3,measurement errors,ultrasonic transducer,barium compounds,measurement error,automotive electronics,ultrasonic ranging system,ultrasonic transducers,car reversing aid system,lead-free piezoelectric materials,lead,piezoelectric material,transducers,acoustics,band pass filters,materials,mobile robot
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