Water leak sensing system and method

A water leak sensing system comprising:

• a plurality of sensor terminals that include sensors each installed in a pipeline in a pipeline network and detecting a vibration of the pipeline as a signal, the pipeline buried in ground and allowing a fluid of water or another substance to flow;
• and
• a computer that communicates with the plurality of sensor terminals, senses a leak of the fluid from the pipeline based on detection signal data of a plurality of the sensors of the plurality of sensor terminals, and outputs a result, wherein
• the pipeline of the pipeline network is either a first pipeline not covered by a pipe covering member or a second pipeline covered by the pipe covering member, wherein a first vibration intensity of a first sound of a first leak in the first pipeline is greater than a second vibration intensity of a second sound of a second leak in the second pipeline, and
• based on the first and second vibration intensities of the first and second sounds of the first and second leaks in the first and second pipelines, respectively, the first leak in the first pipeline is detectable by the sensors at a first distance from a first leak point, and the second leak in the second pipeline is detectable by the sensors at a second distance, longer than the first distance, from a second leak point,
• the computer determines at least one of presence or absence of the first leak or the second leak and a leak amount of the fluid from the first or second pipeline based on signals from the plurality of sensors, and makes a determination by applying different conditions depending on whether there is the first leak from the first pipeline or the second leak from the second pipeline.

A water leak sensing method in a water leak sensing system, which includes:

• a plurality of sensor terminals that include a sensor installed in a pipeline in a pipeline network and detecting a vibration of the pipeline as a signal, the pipeline buried in ground and allowing a fluid of water or another substance to flow;
• and a computer that communicates with the plurality of sensor terminals, senses a leak of the fluid from the pipeline based on detection signal data of a plurality of sensors of the plurality of sensor terminals, and outputs a result, the pipeline of the pipeline network being either a first pipeline not covered by a pipe covering member or a second pipeline covered by the pipe covering member, wherein a first vibration intensity of a first sound of a first leak in the first pipeline is greater than a second vibration intensity of a second sound of a second leak in the second pipeline, based on the first and second vibration intensities of the first and second sounds of the first and second leaks in the first and second pipelines, respectively, the first leak in the first pipeline is detectable by the sensors at a first distance from a first leak point, and the second leak in the second pipeline is detectable by the sensors at a second distance, longer than the first distance, from a second leak point, the method comprising arranging the plurality of sensors in the pipeline network at an interval based on the first distance in a first area including the first pipeline in the pipeline network, and at an interval based on the second distance in a second area of the pipeline network including the second pipeline based on pipeline information including information on presence or absence of the pipe covering member in the pipeline network, and arranging a density of the sensors in the first area including the first pipeline to be greater than a density of the sensors in the second area including the second pipeline.