Patent Document ID: 9606520
Application ID: 13439779
Patent Flag: 1

Claim One:
1. A computerized method for detecting outliers in a building management system having multiple operating modes, the method comprising: receiving, at a building management system, a data set containing a plurality of observed points for a variable of the building management system, wherein each of the plurality of observed points is associated with a binning parameter indicating an operating mode of the building management system at a time when the observed point was generated, wherein the operating mode comprises high energy consumption mode and low energy consumption mode; organizing the data set into multiple bins based on the binning parameters, each bin representing a subset of the data set and containing a plurality of the observed points for the variable of the building management system, wherein the observed points within each bin are related to each other by the binning parameters associated therewith, wherein each bin corresponds to a different operating mode of the building management system and contains the observed points that were generated when the building management system was operating in the corresponding operating mode; calculating, for each bin, a target parameter and an estimator of scale for the observed points contained within the bin, each of the bins having a different target parameter and a different estimator of scale; generating, for each bin, an upper control limit by adding a multiple of the calculated estimator of scale to the calculated target parameter for the bin and a lower control limit by subtracting a multiple of the calculated estimator of scale from the calculated target parameter for the bin, each of the bins having a different upper control limit and a different lower control limit; detecting, for each bin, an outlier of the building management system by comparing a data point of the bin to the upper control limit and the lower control limit for the bin, wherein an outlier is detected if the data point is not within a bin-specific control limit interval between the upper control limit and the lower control limit, each of the bins having a different bin-specific control limit interval which characterizes operation of the building management system in the corresponding operating mode, wherein at least one of the bin-specific control limit intervals increases a likelihood of detecting the outlier relative to a control limit interval generated by performing the calculating and generating steps for an entirety of the data set; outputting an indication of one or more of the outliers to at least one of a memory device, a user device, or another device on the building management system; and wherein the variable of the building management system comprises a controllable variable and an uncontrollable variable; wherein the controllable variable comprises at least one of occupancy of an area, space usage, and occupancy hours; wherein the uncontrollable variable comprises at least one of outdoor air temperature, solar intensity, and degree days.