Systems and methods for virtual sub-metering
AssigneeHoneywell International Inc.
InventorsPradeep Shetty, Rangesa Arakere
Life of this patent
Estimating the term…
Abstract
The present inventors devised, among other things, systems and methods for estimating the energy usage of individual appliances based on cumulative household energy usage data and energy consumption profiles of the appliances. One exemplary system receives cumulative or aggregate energy usage for a building or other structure including a set of two or more appliances having different load ratings. Based on the aggregate energy usage and predefined usage profiles for the appliances, the exemplary system estimates individual energy usage of the appliances. In one embodiment, the system estimates individual energy usage of the appliances using a Bayesian estimator and displays the usage estimates, referred to as virtual submeter readings, on a graphical user interface.
Claims15
Apparatus for estimating energy usage of two or more electrical devices, the apparatus comprising:
- computer processor means for receiving usage profile data for at least first and second electrical devices, with the first and second electrical devices having different load ratings;
- computer processor means, responsive to an aggregate energy usage value measured by an electric meter and based at least on energy usage of the first and second devices, and responsive to the usage profile data for the first and second electrical devices, for estimating electrical usage of each of the first and second devices, wherein the means includes a Bayesian estimator;
- and
- a graphical user interface for inputting the usage profile data for the first and second electrical devices, wherein the interface is configured to receive respective first and second load ratings for the first and second electrical devices and prevents input of first and second load ratings that are equal.
A system comprising:
- first and second electrical loads having respective first and second different load ratings, the first and second electrical loads comprising household and business electrical appliances;
- an electric meter electrically coupled to the first and second electrical loads for providing an aggregate energy usage value based in part on a sum of first and second energy usage values for the respective first and second electrical loads;
- a server including a processor and memory, the memory including machine-executable instructions for determining respective first and second estimates of the first and second energy usage values based on the aggregate energy usage value and respective first and second sets of load profile information for the first and second electrical loads;
- a display, responsive to the server, for displaying the first and second estimates of the first and second energy usage values;
- and
- a graphical user interface for inputting the first and second sets of load profile information, wherein the interface is configured to receive respective first and second load ratings for the first and second electrical devices and prevents input of first and second load ratings that are equal.
A method implemented using at least one processor coupled to a memory, the method comprising:
- receiving an aggregate energy usage reading associated with an electric meter coupled to the first and second electrical devices having different load ratings, with the aggregate energy usage reading based at least in part on respective first and second energy usage values for the first and second electrical devices;
- estimating respective first and second energy usage values for the first and second devices, based on the aggregate energy usage read and respective first and second sets of profile information for the first and second electrical devices;
- and
- receiving user input defining the first and second sets of profile information, wherein the profile information includes respective first and second load ratings for the first and second electrical devices, and preventing input of first and second load ratings that are equal.
Dependencies are inferred from the claim text.