LEAKAGE EARLY WARNING SYSTEM AND METHOD USING MORNITORING WATER LEVEL GROWTH RATE

摘要

The present invention relates to a leakage early warning system. The leakage early warning system comprises: a water level meter; a signal processing part; a pattern model learning part; a residual generation part; and a false alarm prevention part. The water level meter measures a water level of a water collection tank. The signal processing part receives a measurement signal from the water level meter and removes noise, and then calculates the water level increase rate in real time. The pattern model learning part generates a pattern model by calculating the water level increase rate from past water level signal data and generates a predicted water level increase rate from the pattern model in real time. The residual generation part receives a present value of the water level increase rate and the predicted value of the water level increase rate, and generates a residual which is a difference between the present value and the predicted value. The false alarm prevention part outputs an alarm signal based on a sign of the residual outputted in the residual generation part and an occurrence time of the residual exceeding a normal range.