Systems and methods for detecting changes in energy usage in a building
AssigneeJohnson Controls Technology Company
InventorsKirk H. Drees, Michael J. Wenzel
Life of this patent
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Abstract
A computer system for use with a building management system for a building includes a processing circuit configured to automatically identify a change in a building's energy usage model based on data received from the building management system. The processing circuit may be configured to communicate the identified change in the static factor to at least one of (a) a module for alerting a user to the identified change and (b) a module for initiating an adjustment to the energy model for a building in response to the identified change.
Claims23
A computer system for use with a building management system in a building, comprising:
- a processing circuit configured to automatically identify a change in the building's energy usage model based on data received from the building management system;
- wherein the processing circuit is configured to communicate the identified change in the building's energy usage model to at least one of (a) a module for alerting a user to the identified change and (b) a module for initiating an adjustment to the energy model for the building in response to the identified change.
A method for identifying changes that affect a building's energy usage during a baseline period being used to generate a baseline energy usage model, comprising:
- calculating energy usage models for varying windows of time within the baseline period;
- comparing coefficients of the calculated energy usage models for varying windows of time;
- outputting an indication that the change has occurred based on the comparison.
A method for identifying changes that affect a building's energy usage during a reporting period after an energy conservation measure has been applied to the building, comprising:
- calculating a first energy usage model for a first portion of the reporting period;
- calculating a second energy usage model a second portion of the reporting period;
- determining whether a change that affects the building's energy usage has occurred by on comparing the model coefficients as associated with the first energy usage model to the model coefficients as associated with the second energy usage model;
- and
- outputting the result of the determination to a building management system component.
Computer-readable media with computer-executable instructions embodied thereon that when executed by a computer system perform a method for use with a building management system in a building, wherein the instructions comprise:
- instructions for using historical data from the building management system to select a set of variables estimated to be significant to energy usage in the building;
- instructions for applying a regression analysis to the selected set of variables to generate a baseline model for predicting energy usage in the building;
- instructions for monitoring data of the building management system after installation of energy conservation measures to determine whether the baseline model can accurately be used to estimate the energy that would have been used by the building prior to the installation of energy conservation measures;
- and
- instructions for outputting at least one of:
- (a) an indication that an energy use factor of the building has changed, and (b) an indication that the baseline model should be adjusted.
A computer system for use with a building management system in a building, comprising:
- a processing circuit configured to automatically identify a change in the building's resource consumption model based on data received from the building management system;
- wherein the processing circuit is configured to communicate the identified change in the building's resource consumption model to at least one of (a) a module for alerting a user to the identified change and (b) a module for initiating an adjustment to the resource consumption model for the building in response to the identified change.
Dependencies are inferred from the claim text.