An ultrasonic flowmeter double-parameter fusion adaptive dynamic threshold adjusting method
By using a dual-parameter dynamic threshold adjustment method, which combines pulse width ratio and transit time to adaptively adjust the threshold voltage, the problem of inaccurate transit time measurement of ultrasonic flowmeters under complex operating conditions is solved, thereby improving the real-time response and accuracy of the measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA JILIANG UNIV
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ultrasonic flow meters struggle to achieve real-time response to signal amplitude changes under complex operating conditions, and threshold adjustment methods cannot accurately identify target characteristic waves, resulting in inaccurate transit time measurements.
A dual-parameter dynamic threshold adjustment method based on pulse width ratio and transit time is adopted. The pulse width ratio is used to quickly determine the amplitude of the echo signal and perform preliminary threshold adjustment. The transit time output is combined to perform consistency verification and post-correction, and the threshold voltage is dynamically adjusted to adapt to different flow conditions.
It achieves real-time response and measurement accuracy of ultrasonic flowmeters under complex working conditions, and improves the accuracy of transit time determination and overall metering performance.
Smart Images
Figure CN122408901A_ABST