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Wenzhen Wang

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Proceedings Article | 14 February 2023 Paper

System design of ultrasonic oil production flowmeter based on time difference method

Wenzhen Wang, Kai Yan

Proceedings Volume 12589, 125890J (2023) https://doi.org/10.1117/12.2670205

KEYWORDS: Ultrasonics, Signal processing, Pulse signals, Control systems, Medium wave, Design and modelling, Circuit switching, Time metrology, Signal detection, Data transmission

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The flowmeter uses the TDC-GP22 chip as the acoustic wave processing core, uses the TDC-GP22 module to generate pulse waves, and sends them to the corresponding ultrasonic signal drive circuit to improve the amplitude of the ultrasonic signal. The echo is sent to TDC-GP22 to calculate the forward and reverse time difference; the main control module selects the STM32F407 chip, controls the TDC-GP22 module to transmit forward and reverse ultrasonic signals, enters the signal drive circuit to receive the echo signal and loads it into the TDC -GP22 chip calculates the time difference, and finally sends the corresponding time difference data to the main control module, which is connected to the PC through the serial port to display the measured data; the test is carried out in the fluid circulation device in the laboratory, and the speed of the screw pump is controlled to adjust the pipeline. The mass flowmeter is used as the calibration instrument, and the final test results demonstrate that the measurement accuracy of the ultrasonic flowmeter meets the requirements of oilfield use.

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