Connected Equipment Performance Index for Timely Fault Detection
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Solution Overview
Problem
Existing building management systems lack an effective method to generate a comprehensive performance index for connected equipment, which hinders timely fault detection and maintenance, leading to potential performance degradation.
Innovation Solution
A time varying performance indication system that measures monitored variables and status codes, performs performance checks using predetermined rules, and generates an overall performance index for connected equipment, adjusting operations based on this index.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a comprehensive performance index system is implemented, then fault detection capability is improved, but system complexity increases
Solution Approach 1:
The performance indication system is divided into multiple independent performance checks (first performance checks using status codes, second performance checks using monitored variables and predetermined rules). Each check generates separate performance indicators that are then aggregated into an overall performance index, making the complex system manageable and maintainable
Solution Approach 2:
Individual performance indicators serve as intermediaries between the raw performance data (status codes and monitored variables) and the overall performance index. These indicators act as intermediate processing steps that simplify the aggregation process and enable modular system design
2Measurement precision
If multiple performance checks are performed, then measurement precision is improved, but processing time increases
Solution Approach 1:
The system performs multiple performance checks in parallel rather than sequentially. First performance checks using status codes and second performance checks using monitored variables are executed simultaneously, reducing total processing time while maintaining comprehensive assessment accuracy
Solution Approach 2:
The system uses weighted aggregation of individual performance indicators to create the overall performance index. By applying weights to different indicators based on their importance, the system achieves accurate performance assessment without needing to process every possible parameter with equal depth
Data Source
AI summary
A system includes equipment operable to affect, monitor, or control one or more variable states or conditions in a building, a sensor configured to measure a variable relating to performance of the equipment, and a control system. The control system is configured to perform performance checks for the equipment using a measurement from the sensor and determine individual performance check indicators based on the performance checks. The individual performance check indicators indicate events having different timings and severities. The control system is configured to generate an overall performance index for the equipment using the individual performance check indicators and weights based on the different timings and severities of the events indicated by the individual performance check indicators. The control system is configured to cause an adjustment to the equipment by initiating or executing a preventative maintenance action for the equipment based on the overall performance index.