Non-invasive Thermal Dispersion Flow Meter with Fluid Leak Detection and Geo-fencing Control

A device for interrupting a flow of fluid upon detection of a leak, comprising:

• a primary valve having a flow meter and in fluid communication with a fluid conduit delivering fluid to a property having a plurality of water destinations;
• a plurality of unit valves comprising a unit valve for each water destination of the plurality of water destinations, each unit valve having a flow meter;
• a controller configured to establish a geo-fencing boundary about the primary and unit valves and in communication with the primary and unit valves and the flow meters of the primary and unit valves;
• and
• a plurality of occupant sensors configured to detect an occupant within the geo-fencing boundary and output an occupied signal when a person is detected and output a vacant signal when no person is detected for a predetermined period of time, wherein each occupant sensor is in communication with the controller,
• wherein the controller is further configured to monitor the flow meters for an away fluid flow rate threshold upon detection of the vacant signal and output an away leak signal when the away fluid flow rate threshold is met for a water destination, to monitor the flow meters for a home fluid flow rate threshold upon detection of the occupied signal and output a homeleak signal when the away fluid flow rate threshold is met for a water destination, and to close the primary valve upon detection of an away leak signal for at least two units and close the primary valve upon detection of the home leak signal for at least two units, and to close a unit valve of the plurality of unit valves upon detection of the home leak signal or the away leak signal for the corresponding unit.

A device for interrupting a flow of fluid upon detection of a leak, comprising:

• a primary valve having a flow meter and in fluid communication with a fluid conduit delivering fluid to a multi-unit property having a plurality of units;
• a plurality of unit valves comprising a unit valve for each unit of the plurality of units, each unit valve having a flow meter;
• means to detect an occupant at each unit;
• and
• means for detecting an overflow condition in each unit and generating a home leak signal in response thereto when an occupant is present at the unit, and generating an away leak signal in response thereto when no occupant is present at the unit;
• wherein the valve of a unit of the plurality of units closes in response to a home leak signal or away leak signal generated for the unit;
• and
• wherein the primary valve closes when the home leak signal or the away leak signal is detected and indicates a leak in at least two units of the plurality of units.