Flow calculation device and calculation method

Abstract

The embodiment of the invention discloses a flow calculation device and a flow calculation method. The flow calculation device comprises a signal transmitting and receiving module, a transduction module and a control module; the signal transmitting and receiving module is electrically connected with the control module; the signal transmitting and receiving module comprises a signal transmitting end and a signal receiving end; the control module is used for controlling the transduction module to be connected with the signal receiving end and controlling the transduction module to be disconnected with the signal transmitting end so as to measure noise information of a to-be-measured medium and obtain noise components; the control module is further used for controlling the transduction module to be conducted with the signal transmitting end and the signal receiving end at the same time so as to measure flow information of the to-be-measured medium and obtain a measured flow value, and determining a real flow value of the to-be-measured medium according to the noise components and the measured flow value. Therefore, the real flow value of the to-be-measured medium can be obtained by completely removing the noise components when the real flow value is calculated, error interference generated by the noise components in a detection environment is reduced, and the flow calculation precision of the to-be-measured medium is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of flow monitoring, and in particular, to a flow calculation device and calculation method. Background technique [0002] Most of the existing acoustic Doppler velocity and flow calculations use the Doppler frequency shift principle to measure the corresponding flow velocity by measuring the signal frequency shift of the product during the ultrasonic transmission process, and then calculate the corresponding flow. [0003] The characteristics of this measurement method are: there must be an acoustic transmitting transducer and an acoustic receiving transducer (there are also transmitting and receiving sharing an acoustic transducer, time-division multiplexing acoustic transducer). Among them, the acoustic transmitting transducer is specially used to transmit ultrasonic signals of a certain frequency, and the acoustic receiving transducer is specially used to receive the diffracted u...

AI Technical Summary

Problems solved by technology

Among them, the acoustic transmitting transducer is specially used to transmit ultrasonic signals of a certain frequency, and the acoustic receiving transducer is specially used to receive the diffracted ultrasonic signals. The two modules are independently controlled and work separately. They are not interchangeable during the working process. There is noise and external electromagnetic interference of small signals on the circuit, resulting in low accuracy of flow calculation

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