초록 ▼

A non-invasive flow analysis system and method wherein a sensor, such as an acoustic sensor, is coupled to a conduit for transmitting a signal which varies depending on the characteristics of the flow in the conduit. The signal is amplified and there is a filter, responsive to the sensor signal, and

A non-invasive flow analysis system and method wherein a sensor, such as an acoustic sensor, is coupled to a conduit for transmitting a signal which varies depending on the characteristics of the flow in the conduit. The signal is amplified and there is a filter, responsive to the sensor signal, and tuned to pass a narrow band of frequencies proximate the resonant frequency of the sensor. A demodulator generates an amplitude envelope of the filtered signal and a number of flow indicator quantities are calculated based on variations in amplitude of the amplitude envelope. A neural network, or its equivalent, is then used to determine the flow rate of the flow in the conduit based on the flow indicator quantities.

대표청구항 ▼

[ What is claimed is:] [1.] A flow analysis system comprising:a sensor in communication with a conduit including a flow therein for transmitting a signal which varies depending on the characteristics of the flow in the conduit;a filter, responsive to said signal, tuned to pass a narrow band of frequ

[ What is claimed is:] [1.] A flow analysis system comprising:a sensor in communication with a conduit including a flow therein for transmitting a signal which varies depending on the characteristics of the flow in the conduit;a filter, responsive to said signal, tuned to pass a narrow band of frequencies proximate the resonant frequency of the sensor;means for generating an amplitude envelope of the filtered signal;means, responsive to the amplitude envelope, for calculating a plurality of flow indicator quantities representative of the flow in the conduit; andmeans, responsive to the flow indicator quantities, for determining the flow rate of the flow in the conduit.