Method for controlling piano intelligent system based on keys

The invention discloses a method for controlling a piano intelligent system based on keys, and the method comprises the steps: entering a calibration mode, completely pressing a preset number of keys one by one, and defining an interval from the maximum value to the minimum value of the AD value of each key as a motion interval; when the piano keys are pressed down, the photoelectric detection sensing circuit converts detected key pressing actions into MIDI protocol code signals, and the MIDI protocol code signals are transmitted to the piano intelligent system control center through the communication device. The piano intelligent system control center analyzes and confirms the MIDI protocol code signal to obtain an effective pressed key value; and when a plurality of keys are pressed at the same time and the key values of the effectively pressed keys accord with a specific combination key value preset by a piano intelligent system control center, making a response according to a preset combination key and a