Management system user interface for comparative trend view

摘要

Methods, mediums, and systems include use of a system manger application in a data processing system to manage a building automation system, to display a trend view chart on a graphical user interface, based on a trend view definition, showing the changing value of point data over time from a building automation system device, and to automatically display a comparative chart, based on the trend view definition, of historical point data from the building automation system device upon selection of a predefined comparative trend view button and an offset time period.

主权项

1. A method for creating a comparative trend view in a graphical user interface of a building management system comprising the steps of:
maintaining a system manager application in a data processing system of a management system configured to perform building management system functions and to provide a graphical user interface; running the system manager application; displaying a trend view chart on the graphical user interface using a trend view definition selected by a user; acquiring trend data associated with the trend view definition from a trend database in the data processing system, the trend data values comprising measured values from a building automation system device acquired over a first time period; populating the trend view chart with the trend data values associated with the trend view definition; displaying a predefined comparative trend view button on the graphical user interface; displaying a comparative trend view chart on the graphical user interface next to the trend view chart based on the trend view definition of the trend view chart upon selection of the predefined comparative trend view button by the user; displaying one or more predefined time offset buttons on the graphical user interface, wherein selection of one of the one or more predefined offset buttons creates an offset time period of the comparative trend view chart from the trend view chart based on a time interval specified by the one or more predefined offset buttons, and wherein the predefined offset buttons include an option to change the offset time period between forward in time and backwards in time; acquiring historical trend data values from the trend database in the data processing system based on the offset time period selected by the user, the historical trend data values comprising measured values from the same building automation system device acquired over a second time period that is offset from the first time period by the offset time period; and populating the comparative trend view chart with the historical trend data values; and in response to receiving a change in a time range represented by the trend view chart, automatically updating the comparative trend view chart according to the change in the time range and the offset time period.