Figure 3.
The flow diagram has five linked boxes. Asset and Sensing Layer lists H V A C components, selective sensors, and critical asset focus. Data Acquisition and Integration lists gateways or edge devices, data consolidation, and basic data validation. Condition Assessment and Analytics lists threshold-based monitoring, degradation trends, and health-status indicators. This leads to Decision Support and Maintenance Planning, which lists alerts and diagnostics, maintenance scheduling, and work-order prioritisation. The final box is Performance and Sustainability Feedback, with energy performance, reliability indicators, and sustainability metrics.Layered architecture of the proposed IoT-based PdM framework for HVAC systems
Source: Author’s own work