| 摘要 |
PURPOSE:To make it possible to know a point of accident by one detecting means or two detecting means requiring no synchronization for a fluid pipeline, by measuring periodically signals from a pressure gage and a flowmeter of the fluid pipeline, and by transmitting them to a data processing unit. CONSTITUTION:A pressure gage 13 and a flowmeter 14 are provided on a water pipeline 1, and a signal p(t) from the pressure gage 13 and a signal g(t) from the flowmeter 14 are measured at every period DELTAtau and are transmitted to a receiving and data-processing unit 17 by a transmitting unit 15. Received signals are once stored in data accumulating unit 16. Next, data stored in a prescribed terms before the present are taken out and processed by a data processing unit 17. Data of (n+1) items in all containing the present pressure measurement data p(t) and the past data p(t-2DELTAtau), p(t-2iDELTAtau), ... p(t-2nDELTAtau) are adopted as the data for the prescribed term. Data obtained by the flowmeter are employed in the same way. The point of a bursting accident is detected from these data. |
