Abstract: Systems and methods for determining leaks in a water distribution system using water devices within buildings. Pressure readings over time from two or more water devices. Egress readings and possibly other noise are removed from the pressure readings to isolate signals for leaks from outside of the buildings. Using the isolated signals, the location of the leak in the water distribution system can be approximated.

Abstract: A method of identifying a type of plumbing system of a building is provided. The method includes determining a spectral energy ratio as a function of first pressure data acquired during a first time period in which a water flow through a plumbing system of a building is below a threshold. The method also includes determining a multimodal test value as a function of second pressure data acquired during a second time period that includes at least some time during which the water flow through the plumbing system is greater than or equal to the threshold. Further, the method includes identifying a type of the plumbing system of the building as a function of the spectral energy ratio and the multimodal test value.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: Systems and methods for predicting, detecting, and/or mitigating a pipe freeze are provided. A system for analyzing water in a plumbing system includes a sensor that is configured to measure pressure within a pipe in the plumbing system as a function of time, and a processor that is configured to determine a state of water within the pipe by analyzing the pressure within the pipe as a function of time. The state of the water includes a prediction that the water within the pipe will freeze and/or a determination that the water within the pipe has frozen. The sensor is arranged at a first location within the plumbing system that is remote from a second location within the plumbing system that corresponds to the state of the water.

Abstract: A system for determining a location of an egress point in a plumbing system that includes a branched system of pipes within a building is provided. The system includes a first sensor that is configured to measure a first pressure signal as a function of time at a first location within the plumbing system, and a second sensor that is configured to measure a second pressure signal as a function of time at a second location within the plumbing system. The plumbing system includes multiple branch points between the first location and the second location. The system also includes a processor that is configured to determine a temporal difference between a first pressure drop in the first pressure signal and a second pressure drop in the second pressure signal, and use the temporal difference to determine an estimated location of the egress point in the plumbing system.

Abstract: Systems and methods for determining leaks in a water distribution system using water devices within buildings. Pressure readings over time from two or more water devices. Egress readings and possibly other noise are removed from the pressure readings to isolate signals for leaks from outside of the buildings. Using the isolated signals, the location of the leak in the water distribution system can be approximated.

Abstract: A system for determining a location of an egress point in a plumbing system that includes a branched system of pipes within a building is provided. The system includes a first sensor that is configured to measure a first pressure signal as a function of time at a first location within the plumbing system, and a second sensor that is configured to measure a second pressure signal as a function of time at a second location within the plumbing system. The plumbing system includes multiple branch points between the first location and the second location. The system also includes a processor that is configured to determine a temporal difference between a first pressure drop in the first pressure signal and a second pressure drop in the second pressure signal, and use the temporal difference to determine an estimated location of the egress point in the plumbing system.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: Systems and methods for predicting, detecting, and/or mitigating a pipe freeze are provided. A system for analyzing water in a plumbing system includes a sensor that is configured to measure pressure within a pipe in the plumbing system as a function of time, and a processor that is configured to determine a state of water within the pipe by analyzing the pressure within the pipe as a function of time. The state of the water includes a prediction that the water within the pipe will freeze and/or a determination that the water within the pipe has frozen. The sensor is arranged at a first location within the plumbing system that is remote from a second location within the plumbing system that corresponds to the state of the water.

Abstract: Systems and methods for automatically tracking tools and managing tool inventory. Tools may be assigned to a work group or crew. Tools are tracked and monitored to determine whether the tools are with their assigned group, relocated to a different group, missing, or left behind at a job site. For relocated tools, the tool tracking system may identify and output the time and the group to which the tool has been relocated. For tools that are missing, the system may compute and output the group or crew, time, and location in the form of a street address, latitude, longitude, and/or map where the missing tool was last seen. The system may also send out real-time notifications (e.g., SMS text messages, emails, phone calls) to designated personnel so that an appropriate action can be taken. The tool tracking system also acts as an inventory management system for tools.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: A method of identifying a type of plumbing system of a building is provided. The method includes determining a spectral energy ratio as a function of first pressure data acquired during a first time period in which a water flow through a plumbing system of a building is below a threshold. The method also includes determining a multimodal test value as a function of second pressure data acquired during a second time period that includes at least some time during which the water flow through the plumbing system is greater than or equal to the threshold. Further, the method includes identifying a type of the plumbing system of the building as a function of the spectral energy ratio and the multimodal test value.

Abstract: A system for determining a location of an egress point in a plumbing system that includes a branched system of pipes within a building is provided. The system includes a first sensor that is configured to measure a first pressure signal as a function of time at a first location within the plumbing system, and a second sensor that is configured to measure a second pressure signal as a function of time at a second location within the plumbing system. The plumbing system includes multiple branch points between the first location and the second location. The system also includes a processor that is configured to determine a temporal difference between a first pressure drop in the first pressure signal and a second pressure drop in the second pressure signal, and use the temporal difference to determine an estimated location of the egress point in the plumbing system.

Abstract: A method and system for detecting small leaks in a plumbing system is disclosed. A temperature sensor coupled to the water in the plumbing system is used to determine if there is a leak. During times of inactivity for fixtures in the plumbing systems, a flow sensor might measure usage of water that would indicate a leak. For very small leaks, the flow is below a minimum measurable flow of the flow sensor. Embodiments of the invention measure temperature of water within a pipe coupled to the plumbing system. Temperature will generally decay in a particular predicable way when there is flow as the temperature of water upon entry to the building is lower than the air temperature within the building. Signal processing, machine learning and/or statistical approaches are used to analyze the temperature and optionally flow and/or pressure over time to determine when a leak is likely.

Abstract: Systems and methods for automatically tracking tools and managing tool inventory. Tools may be assigned to a work group or crew. Tools are tracked and monitored to determine whether the tools are with their assigned group, relocated to a different group, missing, or left behind at a job site. For relocated tools, the tool tracking system may identify and output the time and the group to which the tool has been relocated. For tools that are missing, the system may compute and output the group or crew, time, and location in the form of a street address, latitude, longitude, and/or map where the missing tool was last seen. The system may also send out real-time notifications (e.g., SMS text messages, emails, phone calls) to designated personnel so that an appropriate action can be taken. The tool tracking system also acts as an inventory management system for tools.

Abstract: Systems and methods for automatically tracking tools and managing tool inventory. Tools may be assigned to a work group or crew. Tools are tracked and monitored to determine whether the tools are with their assigned group, relocated to a different group, missing, or left behind at a job site. For relocated tools, the tool tracking system may identify and output the time and the group to which the tool has been relocated. For tools that are missing, the system may compute and output the group or crew, time, and location in the form of a street address, latitude, longitude, and/or map where the missing tool was last seen. The system may also send out real-time notifications (e.g., SMS text messages, emails, phone calls) to designated personnel so that an appropriate action can be taken. The tool tracking system also acts as an inventory management system for tools.

Abstract: Systems and methods for automatically tracking tools and managing tool inventory. Tools may be assigned to a work group or crew. Tools are tracked and monitored to determine whether the tools are with their assigned group, relocated to a different group, missing, or left behind at a job site. For relocated tools, the tool tracking system may identify and output the time and the group to which the tool has been relocated. For tools that are missing, the system may compute and output the group or crew, time, and location in the form of a street address, latitude, longitude, and/or map where the missing tool was last seen. The system may also send out real-time notifications (e.g., SMS text messages, emails, phone calls) to designated personnel so that an appropriate action can be taken. The tool tracking system also acts as an inventory management system for tools.

Abstract: Systems and methods for automatically tracking tools and managing tool inventory. Tools may be assigned to a work group or crew. Tools are tracked and monitored to determine whether the tools are with their assigned group, relocated to a different group, missing, or left behind at a job site. For relocated tools, the tool tracking system may identify and output the time and the group to which the tool has been relocated. For tools that are missing, the system may compute and output the group or crew, time, and location in the form of a street address, latitude, longitude, and/or map where the missing tool was last seen. The system may also send out real-time notifications (e.g., SMS text messages, emails, phone calls) to designated personnel so that an appropriate action can be taken. The tool tracking system also acts as an inventory management system for tools.