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1. 发明授权

US11561150B2 Passive leak detection for building water supply 有权
公开(公告)号：US11561150B2
公开(公告)日：2023-01-24
申请号：US16989451
申请日：2020-08-10
申请人： Phyn LLC
发明人： Salil P. Banerjee , Raul I. Ramos-Garcia , Aanand Esterberg , Shwetak N. Patel
IPC分类号： G01M3/28 , G01M3/00
摘要： 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.

2. 发明授权

US10527516B2 Passive leak detection for building water supply 有权
公开(公告)号：US10527516B2
公开(公告)日：2020-01-07
申请号：US15818562
申请日：2017-11-20
申请人： Phyn LLC
发明人： Salil P. Banerjee , Raul I. Ramos-Garcia , Aanand Esterberg , Shwetak N. Patel
IPC分类号： G01M3/28 , G01M3/00
摘要： 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.

3. 发明申请

US20220113217A1 EGRESS POINT LOCALIZATION 有权
公开(公告)号：US20220113217A1
公开(公告)日：2022-04-14
申请号：US17510091
申请日：2021-10-25
申请人： Phyn LLC
发明人： Salil P. Banerjee , Brady C. Houston , Babak Abbasi Bastami , Ryan Yong Kim , Shwetak N. Patel
IPC分类号： G01M3/28 , G01M3/26 , E03B7/07
摘要： 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.

4. 发明申请

US20180127957A1 SYSTEM AND METHOD FOR LEAK CHARACTERIZATION AFTER SHUTOFF OF PRESSURIZATION SOURCE 审中-公开
公开(公告)号：US20180127957A1
公开(公告)日：2018-05-10
申请号：US15344458
申请日：2016-11-04
申请人： Phyn LLC
发明人： Miroslav Enev , Salil Banerjee , Shwetak Patel
IPC分类号： E03B7/07 , G01M3/28
CPC分类号： E03B7/071 , G01M3/2815
摘要： The system including a sensing device including a pressure sensor configured to measure pressure of water in a water system of a structure during a testing interval when a system shutoff valve of the water system is closed. The sensing device can be configured to generate pressure measurement data representing the pressure of the water as measured by the pressure sensor. The system also can include one or more processing units comprising one or more processors and one or more non-transitory storage media storing machine-executable instructions configured when run on the one or more processors to perform estimating an orifice size of a leak in the water system based on the pressure measurement data. Other embodiments are provided.

5. 发明授权

US10962439B2 Water leak detection using pressure sensing 有权
公开(公告)号：US10962439B2
公开(公告)日：2021-03-30
申请号：US16508166
申请日：2019-07-10
申请人： Phyn LLC
发明人： Miroslav Enev , Salil Banerjee , Shwetak N. Patel
IPC分类号： G01M3/28 , E03B7/07
摘要： A method including measuring pressure of water in a water system of a structure at a single location in the water system using a pressure sensor of a sensing device to generate pressure measurement data representing the pressure of the water as measured by the pressure sensor. The method also can include communicating the pressure measurement data to one or more processors. The method additionally can include detecting a non-cyclical pressure event corresponding to a water leak in the water system of the structure during a first time period based on an analysis of information including the pressure measurement data. The information analyzed in the analysis does not include flow measurement data that represents a total amount of flow of the water in the water system of the structure during the first time period. Other embodiments are described.

6. 发明授权

US10352814B2 Water leak detection using pressure sensing 有权
公开(公告)号：US10352814B2
公开(公告)日：2019-07-16
申请号：US14937831
申请日：2015-11-10
申请人： Belkin International, Inc.
发明人： Miroslav Enev , Salil Banerjee , Shwetak N Patel
IPC分类号： G01M3/28 , E03B7/07
摘要： A system including a sensing device including a pressure sensor configured to measure pressure of water in a water system of a structure. The sensing device can be configured to generate pressure measurement data representing the pressure of the water as measured by the pressure sensor. The system also can include one or more processing units including one or more processors and one or more non-transitory storage media storing machine executable instructions configured when run on the one or more processors to perform detecting a non-cyclical pressure event corresponding to a water leak in the water system of the structure during a first time period based on an analysis of information including the pressure measurement data. The information analyzed in the analysis does not include any flow measurement data that represents a total amount of flow of the water in the water system of the structure during the first time period. The pressure sensor can be coupled to the water system of the structure at a single location of the water system of the structure when measuring the pressure of the water in the water system of the structure. Other embodiments are provided.

7. 发明授权

US11635342B2 Building type classification 有权
公开(公告)号：US11635342B2
公开(公告)日：2023-04-25
申请号：US16272233
申请日：2019-02-11
申请人： Phyn LLC
发明人： Salil P. Banerjee , Babak Abbasi Bastami
IPC分类号： G01M3/28 , G06F16/901 , G06F16/906 , G01M3/24 , E03B7/07
摘要： 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.

8. 发明授权

US11499856B2 Freeze prediction, detection, and mitigation 有权
公开(公告)号：US11499856B2
公开(公告)日：2022-11-15
申请号：US16562862
申请日：2019-09-06
申请人： Phyn LLC
发明人： Salil P. Banerjee , Ryan Yong Kim
IPC分类号： G01F1/7084 , G01M3/28 , E03B7/07 , G01M3/24 , G01M3/00
摘要： 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.

9. 发明申请

US20190331547A1 WATER LEAK DETECTION USING PRESSURE SENSING 审中-公开
公开(公告)号：US20190331547A1
公开(公告)日：2019-10-31
申请号：US16508166
申请日：2019-07-10
申请人： Phyn LLC
发明人： Miroslav Enev , Salil Banerjee , Shwetak N. Patel
IPC分类号： G01M3/28 , E03B7/07
摘要： A method including measuring pressure of water in a water system of a structure at a single location in the water system using a pressure sensor of a sensing device to generate pressure measurement data representing the pressure of the water as measured by the pressure sensor. The method also can include communicating the pressure measurement data to one or more processors. The method additionally can include detecting a non-cyclical pressure event corresponding to a water leak in the water system of the structure during a first time period based on an analysis of information including the pressure measurement data. The information analyzed in the analysis does not include flow measurement data that represents a total amount of flow of the water in the water system of the structure during the first time period. Other embodiments are described.

10. 发明授权

US10094095B2 System and method for leak characterization after shutoff of pressurization source 有权
公开(公告)号：US10094095B2
公开(公告)日：2018-10-09
申请号：US15344458
申请日：2016-11-04
申请人： Phyn LLC
发明人： Miroslav Enev , Salil Banerjee , Shwetak Patel
IPC分类号： F16K31/02 , E03B7/07 , G01M3/28
摘要： The system including a sensing device including a pressure sensor configured to measure pressure of water in a water system of a structure during a testing interval when a system shutoff valve of the water system is closed. The sensing device can be configured to generate pressure measurement data representing the pressure of the water as measured by the pressure sensor. The system also can include one or more processing units comprising one or more processors and one or more non-transitory storage media storing machine-executable instructions configured when run on the one or more processors to perform estimating an orifice size of a leak in the water system based on the pressure measurement data. Other embodiments are provided.

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