Linkage water pump control system

The utility model relates to the technical field of water pump control systems, and discloses a linkage water pump control system which comprises a base and a linkage water pump arranged above the base, a power supply control box, a current sensor and a potentiometer are arranged on the base, a switch is arranged on the power supply control box, and the power supply control box is connected with the potentiometer through a bus. The bus serves as a power supply line of the water pump and penetrates through the current sensor, and the potentiometer is connected with the linkage water pump through a cable. The current sensor is used for detecting load current of the bus and then controlling the potentiometer and the switch, the PWM duty ratio of the potentiometer is controlled according to the load current so as to adjust the rotating speed of the motor, the load current of the bus is in direct proportion to water flow in the linkage water pump, and the rotating speed of the motor is automatically controlled acc