Patent ID: 7797116

Claim:
An audible system to detect and locate water discharge from a fire sprinkler comprising: a plurality of fire sprinklers mounted in a building, a plurality of said fire sprinklers each having an audio sensing module connected thereto, programmable processor connected to each audio sensing module; said processor providing a first plurality of time based records of audio received by a first plurality of said audio sensing modules; said processor selecting audio sensing modules from the first plurality of audio sensing modules that exceed a predetermined threshold thereby said processor providing a second plurality of audio sensing modules; said processor selecting audio sensing modules from the second plurality of audio sensing modules that exceed a second predetermined threshold thereby said processor providing a third plurality of audio sensing modules; and said processor selecting audio sensing modules from the third plurality of audio sensing modules by determining which members of the third plurality of audio sensing modules exhibit at least first, second and third temporally spaced amplitude parameters with the first and third amplitude parameters being larger than the second parameter.