Cold-Chain Monitoring Network
Connected temperature sensors and a monitoring dashboard that protect vaccines and medicines from storage to delivery.
- Industry
- Healthcare Logistics
- Category
- IoT, Healthcare
- Type
- Concept project
This is a concept project created to demonstrate YARWELL's approach. It does not describe a client engagement, and the interface shows illustrative data only.
Project details
Vaccines and many medicines lose potency outside safe temperature ranges. Manual temperature logs are checked infrequently, so excursions are often discovered too late.
ESP32-based sensor units report over MQTT at regular intervals and buffer readings locally during outages. The platform evaluates thresholds in real time, escalates alerts by SMS and email, and keeps a full history for compliance reporting.
- Continuous temperature and humidity monitoring
- Local buffering during connectivity loss
- Threshold alerts with escalation rules
- Facility- and refrigerator-level status views
- Excursion history and compliance reports
- 1DevicesESP32 sensor units with local storage and battery backup
- 2IngestionMQTT broker and Node.js stream processing
- 3DataPostgreSQL time-series tables and alert rules
- 4InterfaceReact dashboard with SMS and email notifications
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