Digital multifunctional special fire water supply device controller

The invention relates to a digital multifunctional special fire water supply device controller, comprising a programmable logic controller, a pressure sensor and a PID adjustor; wherein, the programmable logic controller is provided with a steering instruction receive port, a fire pump control port and a frequency conversion control port, the steering instruction receive port is used to receive digital steering instructions, the fire pump control port is used to be connected to a fire pump main control loop to control startup and stop of the fire pump, and the frequency conversion control port is used to be connected to a frequency converter to control operation of the frequency converter; the pressure sensor is used to be connected to a fire water supply network to detect network pressure and generate simulated pressure signals; the PID adjustor is used to process the simulated pressure signals and then transmit the signals to the frequency converter to control output frequency of the frequency converter and