Weighing and water adding system of asphalt mixing station

The invention discloses a weighing and water adding system for an asphalt mixing station. The weighing and water adding system comprises a mechanical module, a PLC terminal module and a server module; the mechanical module comprises a water storage bin, a mixing bin, a sewer pipe and an electromagnetic valve; the sewer pipe is arranged between the water storage bin and the mixing bin, the sewer pipe is provided with the electromagnetic valve, and the electromagnetic valve is controlled by the PLC terminal module; the PLC terminal module controls the terminal module and comprises water adding information inquiry, water adding information statistics, water adding information early warning and water adding state display; by arranging a PLC control system, automatic water adding is conducted, the automation degree is high, time and labor are saved, and the water adding efficiency is improved; and a flow monitoring system is arranged in the sewer pipe, flow data are analyzed and processed, and the accuracy of flow