Thermostat with startup temperature estimation

    公开(公告)号:US11480356B2

    公开(公告)日:2022-10-25

    申请号:US16140235

    申请日:2018-09-24

    Abstract: A thermostat is disclosed. The thermostat can include one or more temperature sensors configured to measure a plurality of temperature values within a building. The thermostat can include a processing circuit coupled to the one or more temperature sensors. The processing circuit can receive the plurality of measured temperature values from the one or more temperature sensors. The processing circuit can determine, based on a time invariant Non-Linear Least Squares (NLSQ) technique and the plurality of measured temperature values, a compensated temperature value within the building, wherein the compensated temperature value accounts for an unknown temperature state of the thermostat when the thermostat is turned on.

    SYSTEMS AND METHODS FOR HVAC FILTER REPLACEMENT TYPE RECOMMENDATION

    公开(公告)号:US20210041124A1

    公开(公告)日:2021-02-11

    申请号:US17080297

    申请日:2020-10-26

    Abstract: An HVAC system within a building including an HVAC device having an air filter, a number of sensors, and a control device. The control device has a processor that is configured to determine a current air quality metric based on air quality measurements received by the sensor. The control device is further configured to calculate an average air quality metric based on the current air quality metric and a set of previous air quality metrics. The control device is further configured to store the average air quality metric. The control device is further configured to generate an air filter type recommendation based on the average air quality metric.

    THERMOSTAT WITH STARTUP TEMPERATURE ESTIMATION

    公开(公告)号:US20190178521A1

    公开(公告)日:2019-06-13

    申请号:US16140235

    申请日:2018-09-24

    Abstract: A thermostat is disclosed. The thermostat can include one or more temperature sensors configured to measure a plurality of temperature values within a building. The thermostat can include a processing circuit coupled to the one or more temperature sensors. The processing circuit can receive the plurality of measured temperature values from the one or more temperature sensors. The processing circuit can determine, based on a time invariant Non-Linear Least Squares (NLSQ) technique and the plurality of measured temperature values, a compensated temperature value within the building, wherein the compensated temperature value accounts for an unknown temperature state of the thermostat when the thermostat is turned on.

    THERMOSTAT WITH STEADY STATE TEMPERATURE ESTIMATION

    公开(公告)号:US20190178511A1

    公开(公告)日:2019-06-13

    申请号:US16139882

    申请日:2018-09-24

    Abstract: A thermostat is disclosed. The thermostat can include one or more temperature sensors configured to measure one or more temperature values. The thermostat can include a processing circuit. The processing circuit can receive the one or more temperature values from the one or more temperature sensors. The processing circuit can receive one or more central processing unit (CPU) usage values, wherein the one or more CPU usage values indicate computing usage of the processing circuit. The processing circuit can determine, based on an empirical model comprising one or more gain values and one or more filters and based on one or more signals, a temperature of the building. The one or more signals comprise the one or more temperature values and the one or more CPU usage values. The empirical model accounts for dynamics of heat generated by the processing circuit and airflow acting on the thermostat.

    THERMOSTAT WITH OCCUPANCY DETECTION VIA PROXY

    公开(公告)号:US20180299158A1

    公开(公告)日:2018-10-18

    申请号:US15953012

    申请日:2018-04-13

    Abstract: A controller for controlling an environmental condition of a building space includes a proxy sensor configured to measure a proxy value indicating whether an occupant is within the building space and an occupancy sensor configured to measure an occupancy value. The controller includes a processing circuit configured to determine whether the occupant is within the building space based on the occupancy value of the occupancy sensor, generate a proxy parameter based on a first proxy value measured via the proxy sensor in response to a determination that the occupant is not within the building space based on the occupancy value of the occupancy sensor, determine whether the occupant is within the building based on a second proxy value measured via the proxy sensor and the generated proxy parameter, and control one or more pieces of building equipment to control the environmental condition of the building space.

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