FIELD: measurement technology.
SUBSTANCE: ultrasound flowmeter comprises two acoustic channels for upstream and downstream, a switch, a microcontroller and ADC. Moreover, it introduced a signal generator with linear frequency modulation, a bandpass filter, a mixer, a delay measurement unit with the following compounds: generator output is connected by data line with the switch and with the second input of the mixer, the inputs and outputs of the first and of the second piezoelectric elements respectively, the first and the second acoustic channels through a switch are connected in series with the ADC, a bandpass filter, a mixer and a unit delay measurements to the signal input of the microcontroller, and its control output parameterization bus is connected with the input chirp generator, and its data output is the output of the flowmeter.
EFFECT: improving accuracy measurement and convenience of system operation.
6 dwg
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