Flow Rate Measurements Using Flow-Induced Pipe Vibration

Abstract

This paper investigates the possibility of developing a nonintrusive, low-cost, flow-rate measurement technique. The technique is based on signal noise from an accelerometer attached to the surface of the pipe. The signal noise is defined as the standard deviation of the frequency-averaged time-series signal. Experimental results are presented that indicate a nearly quadratic relationship over the test region between the signal noise and flow rate in the pipe. It is also shown that the signal noise–flow rate relationship is dependent on the pipe material and diameter.

Wireless Sensing, Monitoring and Optimization for Campus-Wide Steam Distribution

“…Figure 7 clearly shows that there is a strong correlation between the energy signature parameter, , and flow rates and they can be fit by a quadratic equation. This agrees with the main conclusion of Evans et al, 10 which states that sound and vibration signals recorded by the accelerometer mounted to the surface of a pipe has a strong (deterministic) relationship with the flow rate. Based on the real-time vibrations as recorded by the accelerometers, we can then estimate the steam flow rate by computing the overall using Eqs.…”

Optimization of flow rate measurement using piezoelectric accelerometers: Application in water industry

“…Evans et al [8] have combined analytical, numerical and experimental methods, in order to confirm the feasibility of the FIV technique by verifying that the standard deviation of the signal from the accelerometer. Initially, a second-degree polynomial represents the best relation between the vibration and the flow rate.…”

“…Mass of a fluid may be indirectly estimated by means of the acceleration that it transmits to another body [8], based on the laws of movement of Newton. Evans et al [8] have combined analytical, numerical and experimental methods, in order to confirm the feasibility of the FIV technique by verifying that the standard deviation of the signal from the accelerometer.…”

A Nonintrusive and Single-Point Infrastructure-Mediated Sensing Approach for Water-Use Activity Recognition

“…The main idea behind infrastructure-mediated sensing technique is: A person's daily activities can be recognized by monitoring the infrastructures (e.g. water, electric, heat, ventilating, air conditioning [1][2][3][4][5][6][7]) in the house.…”