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Applications of ultrasonic sensor for flow measurement

Views:4     Author:Site Editor     Publish Time: 2017-09-22      Origin:Site

 Applications of ultrasonic sensor for flow measurement

                                                Applications of ultrasonic sensor for flow measurement

The basic principle of ultrasonic transducer for flowmeter is based on the ultrasonic propagating velocity of the fluid that is equal to the velocity of the fluid and the velocity of the ultrasonic wave. implementation methods (Including difference frequency method, time difference method and phase difference), beam shift method, Doppler sensor method, correlation method, spatial filtering method and noise method, and so on. Scientists have developed a flowmeter based on ultrasonic time difference method, using high-precision TDC-GP2 time-to-digital converter, the efficiency of flow meter measurement is 5%. It has also been designed a cross-correlation theory of ultrasonic gas flow measurement system, the use of DSP as a controller, by collecting the upstream and downstream flow signals to do cross-correlation calculation, calculate the transit time of cross-correlation function peak corresponding. indirectly measuring flow rate, the flow rate is greater than 0.16m / s when the measurement error is less than 3%.

 

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