Wenpeng Deng,Jan Bennett,David Healy,Andrew Nicholas Dames,James William Evett
申请号：
US16117578
公开号：
US10627273B2
申请日:
2018.08.30
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A method for an ultrasonic time-of-flight flow meter (1) includes driving an ultrasonic transducer (2, 3) using a first waveform (V1(t)) for a first duration (Δ；t1), the first waveform (V1(t)) configured to cause oscillation (21) of the ultrasonic transducer (2, 3). The method also includes driving the ultrasonic transducer (2, 3) using a second waveform (V2(t)) for a second duration (Δ；t2). There is a discontinuity between the first waveform (V1(t)) and the second waveform (V2(t)). The second waveform (V2(t)) and the second duration (Δ；t2) are configured to maintain a voltage (VT(t)) across the ultrasonic transducer (2, 3) within a predetermined range (VH, VL).
