1. Project Background
The office building includes multiple subsystems:
- HVAC and chilled/hot water systems
- Electrical distribution rooms
- Office environments across multiple floors
- Plumbing and drainage systems
Existing issues:
- Environmental data collected manually
- Hidden risks such as leakage are not detectable in real time
- Systems operate in isolation without unified integration
2. System Objectives
The goal is to build a low-maintenance, scalable monitoring system enabling:
- Real-time environmental sensing
- Infrastructure risk detection
- Unified data integration
- Event-based alerting
3. System Architecture
Built on ThinkLink, the system consists of four layers:
1. Sensor Layer
- Temperature & humidity sensors
- Pipe temperature sensors
- Rope-type water leakage sensors
2. Edge Access Layer (DIN-rail DTU)
- Multi-sensor data aggregation
- Protocol conversion and normalization
- Local anomaly detection (e.g., water leakage)
- Offline buffering and retransmission
3. LoRaWAN Network Layer
Based on LoRaWAN:
- Multi-floor building coverage
- Low-power long-term operation
- Reduced cabling complexity
- Suitable for harsh indoor environments
4. ThinkLink Platform Layer
- Device management
- Real-time visualization
- Alarm and event handling
- Historical data analytics
4. Results
- Early detection of water leakage events
- Visibility into HVAC pipeline conditions
- Continuous environmental monitoring
- Shift from inspection-based to event-driven maintenance
5. Key Takeaway
The value of the system lies not in adding sensors, but in restructuring the monitoring logic:
- From fragmented systems → unified platform
- From manual inspection → automated sensing
- From reactive maintenance → real-time alerting
- From experience-based → data-driven operations