Spraying fire extinguishing device control method, device and system

The invention relates to a spray fire extinguishing device control method, device and system, and the method comprises the steps: determining the volume ratio of smoke in a specified space range based on collected smoke data and space parameter information of the pre-configured specified space range when smoke is detected in the pre-configured specified space range, the specified space range is an action space range of a single sprayer; based on a pre-configured threshold parameter, performing threshold comparison on the volume ratio; and based on a threshold comparison result, if the volume ratio is greater than a pre-configured threshold parameter, controlling a sprayer corresponding to a specified space range to start spraying. Compared with the prior art, the spraying system is controlled to be opened or closed according to the space proportion of the smoke occupying the responsible area of the spraying system and the size of the trigger threshold value, the problem that the spraying action is lagged due