Cold and hot water tank water level balancing method based on incremental PID control algorithm

The invention relates to the technical field of liquid flow metering, in particular to a cold and hot water tank water level balancing method based on an incremental PID control algorithm, which comprises the following steps: collecting the liquid levels of a cold water tank and a hot water tank through a high-precision liquid level meter, filtering the collected liquid level data, and comparing the liquid level difference of the two water tanks; opening and closing time between water outlet valves and water return valves of the cold water pipeline and the hot water pipeline is calculated and controlled by utilizing an incremental PID algorithm, so that cold water or hot water can fully return to corresponding water tanks, water level balance and temperature balance stability of the cold and hot water tanks are realized, liquid level and temperature oscillation is avoided, and liquid overflow in a test process is prevented; the system has the advantages of energy conservation, consumption reduction, accurate