Building control system with adaptive user interface

    公开(公告)号:US11429077B2

    公开(公告)日:2022-08-30

    申请号:US16719506

    申请日:2019-12-18

    Inventor: Kirk H. Drees

    Abstract: A building control system has a controller including a processing circuit configured to transition between multiple discrete operating states by executing state transitions, generate an adaptive user interface including a representation of the multiple discrete operating states and the state transitions therebetween, and automatically learn one or more learned behaviors or preferences of the user. The processing circuit is also configured to retrieve, from a descriptive text database, a description of a selected operating state or selected state transition based on the one or more learned behaviors or preferences of the user, the descriptive text database storing multiple different descriptions of the selected operating state or selected state transition, and update the adaptive user interface to provide the description of the selected operating state or selected state transition retrieved from the descriptive text database based on the one or more learned behaviors or preferences of the user.

    Valve assembly with low flow compensation for proportional variable deadband control

    公开(公告)号:US11415335B2

    公开(公告)日:2022-08-16

    申请号:US16516070

    申请日:2019-07-18

    Abstract: A system for controlling a flow rate of a fluid through a valve is provided. The system includes a valve and an actuator. The actuator includes a motor and a drive device that is coupled to the valve for driving the valve between multiple positions. The system further includes a flow rate sensor and a controller that is communicably coupled with the flow rate sensor and the motor. The controller is configured to receive a first flow rate setpoint, determine a first actuator position setpoint using a proportional variable deadband control technique based on the first flow rate setpoint and a flow rate measurement, and receive a second flow rate setpoint. In response to a determination that certain low flow criteria are satisfied, the controller is configured to determine a second actuator position setpoint using the proportional variable deadband control technique based on a low flow compensation setpoint.

    Systems and methods for flow control in an HVAC system

    公开(公告)号:US11092354B2

    公开(公告)日:2021-08-17

    申请号:US16447783

    申请日:2019-06-20

    Abstract: A method for controlling flow in a heating, ventilation, and air conditioning (HVAC) system that imposes an upper limit on the flow of fluid through a heating or cooling coil. Imposing this limit on the flow rate ensures that a temperature change across the coil remains above a minimum threshold and can significantly reduce energy waste. The method includes receiving a first temperature measurement associated with an inlet of the coil, receiving a second temperature measurement associated with an outlet of the coil, and receiving a flow measurement associated with the valve, applying the first temperature measurement, the second temperature measurement, and the flow measurement as input to a model, determining a maximum flow rate that ensures that a difference between the first temperature measurement and the second temperature measurement is above a threshold using the model, and operating the valve in accordance with the maximum flow rate.

    AUGMENTED DEEP LEARNING USING COMBINED REGRESSION AND ARTIFICIAL NEURAL NETWORK MODELING

    公开(公告)号:US20210173360A1

    公开(公告)日:2021-06-10

    申请号:US17179832

    申请日:2021-02-19

    Inventor: Kirk H. Drees

    Abstract: A method for initiating and automatically improving model-driven operations in a low-data scenario includes creating a regression model using pre-operation data prior to initiating the model-driven operations, using the regression model to initiate and perform the model-driven operations during an operational stage, collecting operational data during the operational stage, creating a first artificial neural network model using the operational data, transitioning from using the regression model to perform the model-driven operations to using the first artificial neural network model to perform the model-driven operations responsive to the operational data satisfying a first sufficiency threshold.

    REDUCED LENGTH VALVE ASSEMBLY WITH ULTRASONIC FLOW SENSOR

    公开(公告)号:US20210172777A1

    公开(公告)日:2021-06-10

    申请号:US16709542

    申请日:2019-12-10

    Abstract: A system for controlling a flow rate of a fluid through a valve includes a controller. The controller is configured to receive a raw flow rate measurement from a flow rate sensor assembly configured to measure the flow rate. The controller is further configured to apply a flow rate measurement filter to the raw flow rate measurement to generate a filtered flow rate measurement. The controller is further configured to control actuation of an actuator configured to change the flow rate using the filtered flow rate measurement. The controller is configured to automatically adjust the flow rate measurement filter in response to detecting an event that causes stoppage of the actuation of the actuator.

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