This invention discloses an IoT-based intelligent
irrigation control system for farmland, relating to the technical field of
irrigation control. It consists of four modules: a
data acquisition module for collecting and preprocessing
environmental data to obtain the initial prediction time span, fractional order, and environmental
gain weights, forming a combination of representative quantities; an optimization module for optimizing the combination of representative quantities using an Empire competition
algorithm to obtain the optimal representative quantity; a decision module for calculating the fractional order compensation term using the optimal representative quantity and discretizing the fractional order compensation term to obtain the
control signal; and an execution module for mapping the
control signal to the control variables of the
actuator, outputting a variable flow rate
water supply curve, and generating
water supply control commands based on the variable flow rate
water supply curve. This enables the
actuator to sense the nonlinear transport characteristics of water in the soil and automatically adjust the flow rate output when approaching the
irrigation target, using a forward-looking
control signal to offset the physical infiltration
delay.