Doppler ultrasonic flowmeter, processor and computer...

Details Doppler ultrasonic flowmeter, processor and computer... Doppler ultrasonic flowmeter, processor and computer...

G - Physics

01

F

G01F 1/66 (2006.01)

Patent

CA 2497607

To enable flow rate measurement with a high precision by calculating the flow rate using a flow rate calculation equation in which a quantization error occurring to a spatial resolution is corrected. An ultrasonic transducer 3 or others transmit/receive ultrasonic pulses, and subject the resulting received signals to A/D conversion after a predetermined process is applied thereto. In a computation control section 10, a flow velocity distribution calculation section 11 then derives a flow velocity distribution. These steps are substantially similar to a conventional manner. Then, calculation of the flow rate in the flow rate computation processing section 12 is performed by using a flow rate calculation equation in which a quantization error occurring to the spatial resolution is corrected.

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