An intelligent control method for centralized supply system for electrolyzed oxidizing water, the system comprising a water softener (1), a plurality of electrolyzed oxidizing water generators (2) connected in parallel, liquid storage tanks and delivery pumps, characterized in that:
- a central controller (10) is arranged and performs independent control to each of the plurality of electrolyzed oxidizing water generators (2) connected in parallel, liquid level sensors (9) are arranged in the liquid storage tanks and are connected with the central controller (10) through data acquisition cables (12), and steps of the control method performed by the central controller (10) are:
- 1) at regular interval ΔT, the central controller (10) calculates the liquid volume V in the liquid storage tank based on signals of the liquid level sensors (9), simultaneously calculates the change quantity ΔV1 of the liquid volume in the liquid storage tank and the change rate ΔV of the liquid volume in the liquid storage tank in ΔT, wherein ΔV=ΔV1/ΔT;
- 2) the water level in the liquid storage tank is divided into three levels:
- low water level, general water level and standard water level, and corresponding liquid volume is represented with Vlow, Vcom. and Vstd. respectively with the relationships being Vlow<Vcom.<Vstd., and the change rate of the liquid volume in the liquid storage tank is divided into fast variance, slow variance and generally no change and corresponding change rate of the liquid volume in the liquid storage tank is represented with Δfast, Δslow and Δnone with the relationships being Δfast>Δslow>Δnone;
- 3) the central controller (10) performs control to each of the plurality of electrolyzed oxidizing water generators (2) connected in parallel in accordance with the following situations:
- (3.1) when V≦Vlow, ΔV<0, |ΔV|≧Δslow, that explains the water consumption is relatively large, and the instantaneous water consumption is also relatively large, and all electrolyzed oxidizing water generators (2) should be started to manufacture water for supplement;
- (3.2) when V≦Vlow, ΔV<0, |ΔV|≧Δnone, that explains the instantaneous water consumption gradually reduces, thus a small part of electrolyzed oxidizing water generators (2) can be stopped and only a large part of electrolyzed oxidizing water generators (2) should be started to manufacture water;
- (3.3) when V≦Vlow, ΔV≧Δfast, that explains the water manufacture amount is larger than the instantaneous water consumption amount, water quantity in the liquid storage tank increases quickly, thus only a part of electrolyzed oxidizing water generators (2) should be started to manufacture water;
- (3.4) when V≦Vcom., ΔV<0, |ΔV|≧Δfast, that explains the instantaneous water consumption is relatively large, water quantity in the liquid storage tank decreases quickly, thus more electrolyzed oxidizing water generators (2) should be started to manufacture water;
- (3.5) when V≦Vcom., ΔV<0, |ΔV|≧Δnone, that explains the instantaneous water consumption gradually decreases, thus number of the electrolyzed oxidizing water generators (2) to be started can be reduced;
- (3.6) when V≦Vcom., ΔV≧Δfast, that explains water quantity in the liquid storage tank continuously increases, thus only a small part of or a single electrolyzed oxidizing water generator (2) should be started to manufacture water;
- (3.7) when V≦Vcom., ΔV≧Vnone, that explains the instantaneous water consumption gradually decreases, water quantity in the liquid storage tank slowly increases, thus only a small part of or a single electrolyzed oxidizing water generator (2) should be started to manufacture water;
- (3.8) when V≧Vstd., all electrolyzed oxidizing water generators (2) should be stopped;
- (3.9) when V>Vcom., ΔV<0, |ΔV|≧Δfast, that explains the instantaneous water consumption increases, thus a small part of or a single electrolyzed oxidizing water generator (2) should be started to manufacture water;
- (3.10) when V>Vcom., ΔV≧Δnone, that explains water quantity in the liquid storage tank slowly increases, and all electrolyzed oxidizing water generators (2) should be stopped;
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- 4) the central controller (10) starts/stops each of the plurality of electrolyzed oxidizing water generators (2) through performing mechanism in accordance with the above controlling signals.