High-accuracy measurement of pulse amplitudes for new applications of ultrasonic sensors

摘要

The paper presents a high-accuracy method to measure the peak-to-peak value of short pulses that are received by piezoceramic transducers, opening new applications for ultrasonic sensors. By employing a digital technique, 12-bit accuracy is achieved for a transducer with 2 MHz centre frequency. In the first step the signal is digitized; in the second step a fast digital comparator determines the peak-to-peak value. The complete digital part could be integrated in a single integrated circuit. # 1998 Elsevier Science S.A. All rights reserved.