A wide-range working condition flow monitoring method and system based on ultrasonic signal analysis

Abstract

This invention relates to the field of fluid measurement technology, specifically disclosing a wide-range flow monitoring method and system based on ultrasonic signal analysis. The aim is to provide a high-precision, low-power, and highly adaptable flow monitoring solution, particularly suitable for flow monitoring under complex operating conditions. The method involves transmitting ultrasonic signals to the flow field under test and receiving echo signals. A signal amplification module performs variable gain amplification on the echo signals, and environmental data collected by a temperature and humidity compensation module is used to process and compensate the echo signals. The ultrasonic transit time signal is extracted through low-pass filtering and matched filtering, and the flow velocity vector is calculated using the ultrasonic time-of-flight method. Finally, a lightweight machine learning model is used for error correction, outputting the optimized flow velocity vector and calculating the final flow value. This method and system can operate stably on resource-constrained embedded platforms, exhibit good environmental adaptability, and are suitable for flow monitoring under various operating conditions, improving measurement accuracy and reliability.

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