| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainfall volume arithmetic unit which finds the volume of a rainfall collected in an aquiferous reservoir and pipes from variation in the water level of the aquiferous reservoir due to a rainfall. SOLUTION: This unit is provided with an aquiferous reservoir area storage part 12 stored with the area of the aquiferous reservoir, a water level input part 11 which inputs the water level from the bottom of the aquiferous reservoir, a water level storage part 13 which stores the water levels of the aquiferous reservoir before and after a rainfall, a pipe information storage part 14 which stores the diameter, tilt and length of a pipe and the height from the bottom of the aquiferous reservoir, an aquiferous reservoir rainfall volume arithmetic part which calculates the rainfall volume of the aquiferous reservoir from the area of the aquiferous reservoir and the water levels of the aquiferous reservoir before and after a rainfall, a pipe rainfall volume arithmetic part 16 which calculates the rainfall volume of the pipe from the levels of the aquiferous reservoir before and after the rainfall, the diameter, tilt, and length of the pipe, and the height where the pipe is connected to the aquiferous reservoir, and a rainfall volume output part 17 which outputs the total of the rainfall volume based upon the arithmetic result of the aquiferous reservoir rainfall volume arithmetic part and the arithmetic result of the pipe rainfall volume arithmetic part.
|
