A5.1 - Dual-Mode Telemetry for Industrial Monitoring: Data Integrity between USB and LoRaWAN
- Event
- ETTC 2026 - European Test and Telemetry Conference
2026-06-09 - 2026-06-11
Nuremberg - Chapter
- RF Spectrum II
- Author(s)
- A. Shahzad, J. Biswas, T. Leibner, M. Haid - Darmstadt University of Applied Sciences, Darmstadt (Germany), T. Kohl, T. Behnecke - DEKOMTE de Temple Kompensator-Technik GmbH, Seligenstadt (Germany)
- Pages
- 81 - 88
- DOI
- 10.5162/ettc2026/A5.1
- Price
- free
Abstract
Expansion joints are safety-critical components in thermal power plants, petrochemical facilities and district-heating networks. The traditional inspection routine for these components is invasive, timeconsuming and has limited diagnostic capability. The Smart Kit provides an alternative way to monitor expansion joints by turning the joint itself into a sensor node and continuously streaming its thermal load profile to a cloud backend, where artificial-intelligence-based (AI-based) assessment methods may use the data. The node supports two transmission paths: a wired USB link, which acts as a deterministic reference, and a wireless LoRaWAN link, intended for the actual industrial deployment. Both paths share the same firmware, the same data structure, and the same backend schema in InfluxDB, so that any difference between the two streams may be attributed to the communication layer. Tests in a lab environment and on a turbine test rig show that a properly sized LoRaWAN network, with two gateways and 15 nodes at Spreading Factor 7 (SF₇) in the EU₈₆₈ band, reaches a Packet Delivery Ratio (PDR) of 99.4 % and stays within sensor accuracy limits when compared to the USB reference.