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    Systems and methods for heat rise compensation
    2.
    发明授权
    Systems and methods for heat rise compensation 有权

    公开(公告)号：US11493220B2

    公开(公告)日：2022-11-08

    申请号：US16424821

    申请日：2019-05-29

    Applicant: Johnson Controls Technology Company

    Inventor： Michael J. Ajax ,  Justin J. Seifi

    IPC: F24F11/30 ,  F24F11/523 ,  F24F11/54 ,  F24F11/58 ,  F24F11/64 ,  F24F11/65 ,  F24F11/88 ,  G05B19/042 ,  F24F11/00 ,  F24F140/50 ,  F24F110/10 ,  F24F110/12 ,  F24F130/20 ,  F24F130/30

    Abstract: A HVAC controller includes a housing and one or more heat-generating components contained within the housing. The heat-generating components cause a temperature inside the housing to exceed a temperature outside the housing. The controller includes a temperature sensor configured to measure the temperature inside the housing and a controller event detector configured to detect, for at least one of the heat-generating components, a controller event that generates heat inside the housing. The controller further includes a temperature compensation module configured to identify a steady-state temperature gain associated with the detected controller event, to calculate a temperature offset using a summation of the steady-state temperature gain, to determine the temperature of the building zone outside the housing by subtracting the temperature offset from the temperature measured inside the housing, and to store the temperature offset.

    THERMOSTAT WITH OCCUPANCY MODELING
    3.
    发明申请
    THERMOSTAT WITH OCCUPANCY MODELING 审中-公开

    公开(公告)号：US20190178523A1

    公开(公告)日：2019-06-13

    申请号：US16139794

    申请日：2018-09-24

    Applicant: Johnson Controls Technology Company

    Inventor： Nathan M. Zimmerman ,  Michael J. Ajax

    IPC: F24F11/66 ,  G06N7/00 ,  G06N99/00 ,  F24F11/523

    Abstract: The present disclosure includes a thermostat for controlling HVAC equipment of a building based on occupancy of the building. The thermostat includes an occupancy sensor configured to detect a presence of an occupant. The thermostat includes a processing circuit. The processing circuit can receive occupancy data for one or more points in time from an occupancy sensor. The occupancy data indicates the presence of an occupant at the one or more points in time. The a processing circuit can train an occupancy model based on the occupancy data, wherein the occupancy model predicts a probability of the presence of the occupant

    Feedback control system with normalized performance indices for setpoint alarming
    4.
    发明授权
    Feedback control system with normalized performance indices for setpoint alarming 有权

    公开(公告)号：US10197977B2

    公开(公告)日：2019-02-05

    申请号：US14961747

    申请日：2015-12-07

    Applicant: Johnson Controls Technology Company

    Inventor： Timothy I. Salsbury ,  Carlos Felipe Alcala Perez ,  Michael J. Ajax

    IPC: G05B11/42 ,  F24F11/62 ,  F24F11/30

    Abstract: A setpoint alarming system includes a feedback controller that monitors a process variable provided as a feedback signal from a plant and uses an error signal representing a difference between the process variable and a setpoint to generate a control signal for the plant. The plant uses the control signal to affect the process variable. The system includes a normalized index generator that uses the error signal to generate a normalized performance index for the plant. The system includes an expected value estimator that estimates a value of the normalized performance index expected to occur when a setpoint error of a predetermined magnitude has persisted for a predetermined duration. The system includes an alarm manager that compares the normalized performance index to the expected value and generates an alarm in response to the normalized performance index dropping below the expected value.

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