Water leak detection method, water leak detection system, and sensor terminal used therefor

摘要

【Task】 (EN) Provided are a water leak detection method, a water leak detection system, and a sensor terminal used for the water leak detection method capable of highly reliable water leak determination with a single sensor terminal without being restricted by a wireless communication environment. [Solution] Obtaining measurement data from a vibration sensor, obtaining an autocorrelation coefficient from the measurement data, extracting a peak position information set consisting of a plurality of peaks of the autocorrelation coefficient, and extracting by repeating the above processing a plurality of times. A plurality of obtained peak position information sets are acquired, and water leakage determination is performed based on the relationship between the plurality of peak position information sets. [Selection diagram] Figure 4