Patent ID: 6325093
Filing Date: 2001-12-04
Classification: G05D,Y10T

Abstract:
A system for controlling a water distributing installation with a filtration plant and a reservoir for distributing water to an area, the system comprising:means for supplying water from the filtration plant to the reservoir, said supplying means including at least one pump;a level gauge arranged in the reservoir to measure a water level in the reservoir;a first flowmeter arranged between the reservoir and said supplying means to measure a water supply directed to the reservoir;a second flowmeter arranged between the reservoir and the area to measure a water delivery directed to the area;a short-term demand prediction part that receives said water delivery, said short-term demand prediction part accumulating in a time-series way said water delivery as integrated data per unit time and embedding past time-series data on said water delivery in a state space of n dimension and t hours lagged so as to form short-term demand prediction data; anda controller that receives said water level, said water supply, said water delivery and said short-term demand prediction data, said controller controlling said at least one pump, said controller including a first part for calculating a predicted water level after one unit of time in accordance with said short-term demand prediction data, a second part for controlling said supplying means in accordance with said predicted water level wherein said second part decreases a pumping rate of one pump when said predicted water level is higher than a highest set water level within a range of a preset prediction effective number and increases a pumping rate of one pump when said predicted water level is lower than a lowest set water level within said range of said preset prediction effective number, and a third part for decreasing rotating speed of said at least one pump when said predicted water level is higher than said highest set water level within said range of said preset prediction effective number and increasing said rotating speed of said at least one pump when said predicted water level is lower than said lowest set water level within said range of said preset prediction effective number.