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Time-Sensitive Networking to Improve the Performance of Distributed Functional Safety Systems Implemented over Wi-Fi
Alberto Morato1, Stefano Vitturi1, Federico Tramarin2
1National Research Council of Italy, CNR-IEIIT, 35131 Padova, Italy.
Sensors (Basel, Switzerland)
|September 28, 2023
Summary
Time-Sensitive Networking (TSN) enhances functional safety for wireless industrial networks. Integrating TSN with Wi-Fi improves human-machine interaction and safety performance in smart factories, but requires careful protocol coordination.
Area of Science:
- Industrial automation and control systems.
- Wireless networking protocols.
- Functional safety engineering.
Background:
- Industry 4.0 and Industry 5.0 have advanced smart factories through the Industrial Internet of Things (IIoT), emphasizing human-machine interaction.
- Distributed and interconnected industrial environments necessitate robust functional safety systems.
- Wireless networks offer flexibility but introduce latency, potentially degrading safety performance.
Purpose of the Study:
- To investigate the integration of Time-Sensitive Networking (TSN) for enhancing functional safety protocols in wireless industrial networks.
- To evaluate the performance improvements offered by TSN in a Wi-Fi-based industrial setting.
- To address the challenges of latency and uncertainty in wireless safety systems.
Main Methods:
- Implementation of a reference functional safety protocol using TSN over Wi-Fi.
- Performance analysis of the integrated system using relevant indexes.
- Simulation of a standard industrial warehouse case study.
Main Results:
- TSN demonstrates significant advantages in improving functional safety for wireless industrial networks.
- The study highlights the necessity of meticulous coordination between TSN and the Wi-Fi MAC layer protocol.
- Performance evaluations confirmed the potential of TSN to enhance safety behaviors.
Conclusions:
- TSN is a promising technology for enabling reliable functional safety in flexible, wireless industrial environments.
- Effective implementation requires careful integration with existing wireless communication protocols like Wi-Fi.
- Further research into protocol coordination is crucial for maximizing TSN benefits in industrial safety.
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