Method and apparatus for wavelet-based propagation time measurement of ultrasonic pulses

摘要

The method involves selecting base wavelet and sending an ultrasonic measurement pulse through the passage of a measuring section. The sent ultrasonic measuring pulse is received and sampled as a received signal. The received signal is scaled to an accuracy value to determine the signal propagation time. The wavelet transformation is performed based on the selected base wavelet and the scaled reception signal. The duration of the ultrasonic pulse is determined from the measurement result of the wavelet transformation. An independent claim is included for device for determining transit times of ultrasonic pulse.