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公开(公告)号：US20190056131A1
公开(公告)日：2019-02-21
申请号：US15680632
申请日：2017-08-18
Applicant: Google Inc.
Inventor： Daniel Adam Warren , Eric Marschalkowski , William Alan Saperstein
Abstract: A smart-home device may include an energy-storage element that stores energy that is harvested from an environmental system and a solid state relay (SSR) switching integrated circuit (IC). The SSR switching IC may include switching elements that operate in a first state and a second state. The IC may also include a control circuit that causes the switching elements to operate in the first state to activate a function of the environmental system until the energy-storage element has dropped below a threshold. The control circuit may also cause the switching elements to operate in the second state and harvest energy from the environmental system, determine that a first time has elapsed since the switching elements began operating in the second state, and cause the one or more switching elements to again operate in the first state.
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公开(公告)号：US09733127B2
公开(公告)日：2017-08-15
申请号：US15000067
申请日：2016-01-19
Applicant: Google Inc.
Inventor： Aveek Ravishekhar Purohit , William Alan Saperstein
CPC classification number: G08B13/2494 , G06K9/00771 , G08B13/19 , G08B29/18
Abstract: A system is disclosed for determining the size and location of an object in a monitored area. The system includes a passive infrared sensor (PIR) configured to detect infrared radiation in a monitored area, a lens system including a plurality of lenslets, the plurality of lenslets encoded to create a mask area within the monitored area, a reflective element configured to focus the infrared radiation in the monitored area onto the PIR sensor, and a processor. The processor is configured to detect a moving object in the monitored area, initiate the movement of the reflective element, generating an object signature over time as the reflective element is moved, and the size and location of the object is determined based on the object signature.
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公开(公告)号：US20170205288A1
公开(公告)日：2017-07-20
申请号：US15000067
申请日：2016-01-19
Applicant: Google Inc.
Inventor： Aveek Ravishekhar Purohit , William Alan Saperstein
CPC classification number: G08B13/2494 , G06K9/00771 , G08B13/19 , G08B29/18
Abstract: A system is disclosed for determining the size and location of an object in a monitored area. The system includes a passive infrared sensor (PIR) configured to detect infrared radiation in a monitored area, a lens system including a plurality of lenslets, the plurality of lenslets encoded to create a mask area within the monitored area, a reflective element configured to focus the infrared radiation in the monitored area onto the PIR sensor, and a processor. The processor is configured to detect a moving object in the monitored area, initiate the movement of the reflective element, generating an object signature over time as the reflective element is moved, and the size and location of the object is determined based on the object signature.
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