In industrial IoT projects, many legacy meters and instruments lack communication capabilities, making integration difficult. Replacing them is costly and inefficient. This article introduces a LoRaWAN solution based on EdgeBus and ThinkLink, enabling wireless connectivity, data collection, and cloud integration without hardware replacement.
1. Challenges of Legacy Device Integration
In industries such as energy, manufacturing, and building management, a large number of legacy devices are already deployed.
Common challenges include:
- No built-in communication capability
- Multiple interfaces (RS485, 4–20mA, DI/AI)
- Diverse and incompatible protocols
- High cost of device replacement
A cost-effective retrofit approach is therefore essential.
2. EdgeBus: Lightweight Edge Logic Engine
EdgeBus is a lightweight virtual machine running on Cortex-M0 MCUs, designed for industrial data acquisition and protocol parsing.
It allows developers to write data logic using TypeScript without firmware development.
Key features:
- Multi-protocol support (CJ/T188, DL/T645, Modbus)
- Data polling and exception handling
- Local logic execution
- Edge preprocessing to reduce cloud load
With EdgeBus, legacy devices can be quickly upgraded to support LoRaWAN communication.
3. ThinkLink: Lightweight IoT Platform with LoRaWAN NS
ThinkLink is an integrated IoT platform with built-in LoRaWAN Network Server.
It supports low-code development using JavaScript for:
- Device models
- Data parsing
- Rule engine and automation
- Scheduled tasks
Platform advantages:
- Supports global LoRaWAN standards
- Flexible deployment (cloud, edge, on-premise)
- Integration with Home Assistant, ThingsBoard, BACnet
- Free tier available for small-scale deployment
4. Typical Applications
Remote Meter Reading
- Water, electricity, and gas meters
- Eliminates manual reading
Environmental Monitoring
- Temperature, humidity, air quality
- Distributed wireless deployment
Industrial Retrofit
- Upgrade RS485 and analog devices
- Enable wireless connectivity
5. Building a Complete IoT Data Loop
The complete architecture:
Device → EdgeBus → LoRaWAN Network → ThinkLink → Third-party systems
Benefits:
- Fast deployment
- Low retrofit cost
- Easy maintenance
- Open ecosystem compatibility
Conclusion
Replacing legacy devices is no longer the only option. With edge computing and LoRaWAN, existing infrastructure can be upgraded efficiently.
EdgeBus and ThinkLink provide a practical and scalable solution for industrial IoT deployment.