Intelligent control system of double speed gearbox of dredge pump and control method thereof

The invention discloses an intelligent control system of a double speed gearbox of a dredge pump and a control method thereof. The control system comprises an input shaft rotating speed sensor, an output shaft rotating speed sensor, a gear shifting state detecting element, an electrical control element of a gear shifting mechanism and a main controller, wherein a signal input end of the main controller is electrically connected with the input shaft rotating speed sensor, the output shaft rotating speed sensor, an electrical control system of a clutch of the dredge pump and the gear shifting state detecting element; and a signal output end of the main controller is electrically connected with a control signal input end of the electrical control element of the gear shifting mechanism. The control method comprises the following steps: after the main controller receives a gear shifting command input by a user, the main controller judges whether the rotating speeds of a power input shaft and a power output shaft a