| 摘要 |
PURPOSE:To detect the outflow or inflow quantity of a storage reservoir with good accuracy, by detecting the change in reservoir capacity and the water level component caused by the variation of wave motion and extracting the water level component caused only by the change in reservoir capacity by Fourier analysis. CONSTITUTION:Water level detection input processing 1 for detecting the water level component caused by the change in reservoir capacity is performed and, next, wave motion variation component detecting processing 2 for detecting the water level component caused by the variation of wave motion is carried out. Subsequently, Fourier analytical processing 3 for removing a wave motion component of the longest cycle or less from the water level component caused by the variation of the wave motion by Fourier analysis is performed to extract the water level component caused only by the change in the reservoir capacity. Next, the water level component is added to the water level component caused by the change in the reservoir capacity by water level determination processing 4 to determine a water storage level.
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