Title:
CONTROLLING METHOD FOR NUMBER OF OPERATED PUMPS
Document Type and Number:
Japanese Patent JPS57211601
Kind Code:
A
Abstract:
PURPOSE:To operate an equipment efficiently, by calculating and comparing operation durations per one wake-up of all pumps to make integral values of operation durations and integral values of the number of times of wake-up of all pumps uniform. CONSTITUTION:An operation duration integral value Hi (i=1-5) and a wake-up number integral value Si of each of plural water pumps 3 are calculated, and an operation duration Hi/Si per one wake-up of each pump 3 is calculated. If calculated results in all pumps 3 are equal to one another, a circuit 8 which determines the number of operated pumps on a basis of the signal from a water gauge 6 of a reservoir 4 and an operation order setting circuit 10 give a pump control command 13 to each pump through a pump controller 12 in accordance with a predetermined initial operation order. If calculated results Hi/Si in all pumps are not equal to one another, such operation order is determined in the circuit that pumps are operated in order from the pump having the minimum Hi/Si, and the command 13 is given to each pump 3 through the controller 12. Thus, operation integral times per one wake-up of all pumps are made uniform, and the concentration of the burden of the operation time and the wake-up frequency to a specific pump is prevented.
Inventors:
KATOU TAKATOSHI
Application Number:
JP9702081A
Publication Date:
December 25, 1982
Filing Date:
June 23, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G05B19/02; F04B49/04; F04B49/06; G05B11/18; (IPC1-7): F04B49/02; G05B11/18; G05B19/02
Domestic Patent References:
| JPS5475019A | 1979-06-15 |
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