公开(公告)号：US20220149655A1

公开(公告)日：2022-05-12

申请号：US17581081

申请日：2022-01-21

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Eric Marschalkowski ,  William Alan Saperstein

IPC: H02J50/00 ,  F24F11/30

Abstract: A device may include a rectifier circuit providing a rectified DC signal, a rechargeable energy-storage element, and a power-management integrated circuit (PMIC). The PMIC may include a charging circuit for the rechargeable energy-storage element; a current-sensing circuit that measures a current provided by the rectified DC signal; a programmable current limit; a voltage-sensing circuit that measures a voltage on the rechargeable energy-storage element; and a controller that regulates the current provided to a DC output of the PMIC. the DC output of the PMIC may be regulated based at least in part on the current provided by the rectified DC signal; the programmable current limit; and the voltage on the rechargeable energy-storage element. The DC output of the PMIC may provide energy to a plurality of other energy-consuming subsystems on the device and to the charging circuit for the rechargeable energy-storage element.

公开(公告)号：US20210249900A1

公开(公告)日：2021-08-12

申请号：US17241020

申请日：2021-04-26

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Eric Marschalkowski ,  Nathan Lentz ,  Timothy Lai

IPC: H02J13/00 ,  H02J1/06

Abstract: A circuit for stealing power from an external system without interfering with a communication protocol may include wiring connectors configured to receive wires from the external system; a first voltage regulator to regulate a voltage on the plurality of wiring connectors at a plurality of voltage levels to encode a first multi-bit binary message according to the communication protocol to be sent to the external system; a current monitor to measure a plurality of current levels received through the plurality of wiring connectors and decode the plurality of current levels to determine a second multi-bit binary message sent from the external system according to the communication protocol; and a power converter that adjusts an amount of power stolen from the plurality of wiring connectors based at least in part on the voltage on the plurality of wiring connectors.

公开(公告)号：US20210021153A1

公开(公告)日：2021-01-21

申请号：US17030757

申请日：2020-09-24

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Eric Marschalkowski ,  William Alan Saperstein

IPC: H02J50/00 ,  F24F11/30

Abstract: A device may include a rectifier circuit providing a rectified DC signal, a rechargeable energy-storage element, and a power-management integrated circuit (PMIC). The PMIC may include a charging circuit for the rechargeable energy-storage element; a current-sensing circuit that measures a current provided by the rectified DC signal; a programmable current limit; a voltage-sensing circuit that measures a voltage on the rechargeable energy-storage element; and a controller that regulates the current provided to a DC output of the PMIC. the DC output of the PMIC may be regulated based at least in part on the current provided by the rectified DC signal; the programmable current limit; and the voltage on the rechargeable energy-storage element. The DC output of the PMIC may provide energy to a plurality of other energy-consuming subsystems on the device and to the charging circuit for the rechargeable energy-storage element.

公开(公告)号：US20190227584A9

公开(公告)日：2019-07-25

申请号：US15248725

申请日：2016-08-26

Applicant: GOOGLE LLC

Inventor： Daniel Adam Warren ,  Hugo B. Fiennes ,  Jonathan Alan Dutra ,  David Bell ,  Anthony Michael Fadell ,  Matthew Lee Rogers ,  Ian C. Smith ,  Edwin H. Satterthwaite, JR. ,  Grant Michael Erickson ,  Andrea Mucignat ,  Joseph E. Palmer

IPC: G05D23/19

CPC classification number: G05D23/19 ,  F24D19/1015 ,  F24D19/1039 ,  F24D19/1048 ,  F24F11/30 ,  F24F11/56 ,  F24F11/61 ,  F24F2110/10 ,  F24F2120/14 ,  G05B2219/2614 ,  G05D23/1902

Abstract: A thermostat includes a plurality of HVAC (heating, ventilation, and air conditioning) wire connectors for receiving a plurality of HVAC control wires corresponding to an HVAC system. The thermostat also includes a thermostat processing and control circuit operative to at least partially control the operation of the HVAC system and a powering circuit coupled to the HVAC wire connectors and configured to provide an electrical load power to the thermostat processing and control circuit. The thermostat includes circuitry and methods for maximizing efficiency of energy harvested from the HVAC system connected to the thermostat, and depending on which system is connected to the thermostat, different power schemes can be implemented in order to obtain power from the HVAC system.

公开(公告)号：US10090596B2

公开(公告)日：2018-10-02

申请号：US14328476

申请日：2014-07-10

Applicant: Google LLC

Inventor： Eric Daniels ,  Daniel Adam Warren ,  Hirofumi Honjo

IPC: H01Q9/42 ,  H01Q1/24

Abstract: Various methods related to antennas and embodiments of antennas are presented. The antenna may include an upper arm, wherein the upper arm is substantially parallel to a ground plane and is electrically coupled with at least a ground shorting structure, a support structure, and a feed structure. The antenna may include the ground shorting structure, which may be at a first end of the upper arm. The antenna may include the support structure, which may be at a second end of the length of the upper arm and may support the upper arm. The antenna may also include the feed structure, which is configured to provide a signal for wireless transmission, the feed structure may be attached to a side of the length of the upper arm.

公开(公告)号：US20180191154A1

公开(公告)日：2018-07-05

申请号：US15908560

申请日：2018-02-28

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Brian J. Conner ,  Ian C. Smith

IPC: H02H7/20 ,  G05D23/19 ,  F24D19/10 ,  H05B1/02 ,  F24D5/02 ,  G01R31/07 ,  F24D5/12 ,  H01H85/32 ,  H01H85/02

CPC classification number: H02H7/20 ,  F24D5/02 ,  F24D5/12 ,  F24D19/1009 ,  G01R31/07 ,  G05D23/19 ,  G05D23/1902 ,  H01H85/0241 ,  H01H85/32 ,  H01H2300/03 ,  H05B1/0205 ,  Y02B30/13 ,  Y02B90/224 ,  Y04S20/14

Abstract: A method may include operating a switching circuit in an on state and an off state to actuate a flow of electrical power through a load when switched to the on state; monitoring an electrical property associated with the switching circuit; receiving an enable signal from a processor to power the load; providing a drive signal to the switching circuit to switch to the on state and power the load; determining if an electrical anomaly is present based on the monitored electrical properties; causing the switching circuit to switch to the off state if an electrical anomaly is detected; providing a fault signal to the processor; determining while the switching circuit is off, if the electrical anomaly has been corrected; and after the anomaly has been corrected, causing the switching circuit to switch to the on state.

公开(公告)号：US20180181148A1

公开(公告)日：2018-06-28

申请号：US15897757

申请日：2018-02-15

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Hugo Fiennes ,  Jonathan Alan Dutra ,  David Bell ,  Anthony Michael Fadell ,  Matthew Lee Rogers

IPC: G05D23/19 ,  H01R43/26 ,  F24D19/10

Abstract: A circuit includes a monitoring circuit that monitors a voltage and a switching circuit. Closing the switching circuit causes an external AC load to receive power from an external AC source. The circuit further includes a control circuit that opens the switching circuit for a time interval, where the time interval begins after the voltage is below a lower threshold. The control circuit also ends the time interval after the voltage exceeds an upper threshold, where the time interval is short enough that the operation of the AC load is not affected during the time interval. The circuit also includes a power harvesting circuit that harvests power from the external AC source to raise the voltage during the time interval.

公开(公告)号：US11645894B2

公开(公告)日：2023-05-09

申请号：US17156438

申请日：2021-01-22

Applicant: GOOGLE LLC

Inventor： Daniel Adam Warren ,  Eric Marschalkowski ,  Brian Conner

IPC: G08B3/10 ,  H03K17/082 ,  H03K17/10 ,  H03K17/12 ,  H03K17/08

CPC classification number: G08B3/10 ,  H03K17/0822 ,  H03K17/102 ,  H03K17/122 ,  H03K2017/0806

Abstract: A doorbell chime bypass circuit includes a first node, a second node, and a bi-directional FET switch in series with the first node and the second current node. The bi-directional FET switch includes a first FET and a second FET in series, and is configured to cease conducting current between the first and second nodes when gate voltages of the first and second FETs are below a cut-off threshold. The bypass circuit further includes a sensing circuit configured to determine a level of current flowing through the bi-directional FET switch, and a switch controller configured to set the gate voltages of the first and second FETs to a level below the cut-off threshold when the sensing circuit senses that the level of current meets a doorbell press current threshold, causing the bi-directional FET switch to cease conducting current between the first and second nodes.

公开(公告)号：US11539397B2

公开(公告)日：2022-12-27

申请号：US17131062

申请日：2020-12-22

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Michael Mitchell ,  Nathan Lentz

IPC: H02M7/21 ,  H03K5/00 ,  H04B3/54 ,  H02M7/217

Abstract: A method of powering a controller using an intermediate device with power from an environmental system may include receiving current from a power wire from the environmental system; passing the current from the power wire to a second command wire from the controller; monitoring the current flowing between the power wire and the second command wire while the current is below a threshold indicative of an amount of current used to power the controller from the environmental system; detecting when the current flowing between the power wire and the second command wire exceeds the threshold indicating that the controller is sending a command to the environmental system to perform the function; and sending a command to environmental system using a first command wire from the environmental system after detecting that the current exceeds the threshold.

公开(公告)号：US10819148B2

公开(公告)日：2020-10-27

申请号：US15680632

申请日：2017-08-18

Applicant: Google LLC

Inventor： Daniel Adam Warren ,  Eric Marschalkowski ,  William Alan Saperstein

IPC: F24F11/30 ,  H02J50/00 ,  H02M7/06 ,  H02J7/00 ,  F24F110/10 ,  H02J50/10

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.