HVAC Controller Performance Log with Selective Data Storage
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Solution Overview
Problem
Diagnosing and addressing the loss of efficiency in HVAC systems over time is challenging due to the complexity of monitoring and analyzing performance data from various components.
Innovation Solution
An HVAC controller that logs and records performance parameter data over time, allowing users to retrieve and display specific subsets of data, stores only minimum and maximum values to conserve memory, and adapts data formats based on system configurations, enabling efficient data management and user-friendly diagnostics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the HVAC controller stores detailed performance parameter data for long periods, then diagnostic capability is improved, but memory storage requirements increase
Solution Approach 1:
The patent extracts only the most critical performance parameters (minimum and maximum values) from the complete set of possible HVAC system data, storing only these essential metrics in memory while maintaining comprehensive diagnostic capability through selective data capture
Solution Approach 2:
The patent transforms the complete performance data set into a simplified representation by tracking parameter extremes (minimum and maximum values) over time periods, converting detailed continuous data into discrete boundary values that consume less storage space while preserving diagnostic information
2Loss of information
If the HVAC controller displays all available performance data, then information completeness is improved, but user interface complexity increases
Solution Approach 1:
The patent segments the performance data into distinct time periods (e.g., 24-hour, 7-day, 30-day periods) and allows users to select which period to view, organizing comprehensive data into manageable chronological segments that reduce interface complexity while maintaining information completeness
Solution Approach 2:
The patent implements a dynamic user interface that adapts to user selections, allowing users to choose different time periods and the interface automatically adjusts the displayed data range, creating a flexible viewing experience that maintains simplicity while providing access to all available information
Data Source
AI summary
An HVAC controller is configured to log and record performance related data related to a performance of an HVAC system over a period of time in one or more performance logs stored in a memory of the HVAC controller. In some cases, the HVAC controller may be configured to retrieve at least some of the performance related data from the performance log that corresponds to a selected period of time that may be selected by a user, and display the retrieved performance related data on a display of the HVAC controller.