Title: Safety Architecture Proposal for Low-Latency Sensor/Actuator Networks using IO-Link Wireless
Authors: Doebbert, Thomas Robert 
Cammin, Christoph 
Scholl, Gerd 
Language: eng
Keywords: Functional Safety;IIoT;Industrial wireless networks;Industry 4.0;IO-Link Wireless;Safety critical systems;Wireless sensor networks
Issue Date: Jan-2022
Document Type: Article
Journal / Series / Working Paper (HSU): IEEE Access
Volume: 10
Page Start: 3030
Page End: 3044
In the field of production automation, IO-Link Wireless (IOLW) offers energy-efficient and cost-effective solutions for networking wireless sensors and actuators close to the machines on the industrial shop-floor. In this paper, a concept is presented to enhance IOLW with security-for-safety and safety features in order to make safety critical systems in industrial environments with performance characteristics dedicated to demanding applications feasible. As data security is of paramount importance, security mechanisms already implemented in other wireless protocols are investigated and security-for-safety mechanisms for IOLW are introduced. Potential cryptographic algorithms are evaluated for IOLW with respect to energy consumption and timing. Taking performance parameters into account, which are crucial for industrial manufacturing processes, a safety protocol data unit (SPDU) is described and evaluated for different payload length and cycle times. Finally, an outlook towards the implementation of a demonstrator setup completes this work.
Organization Units (connected with the publication): Elektrische Messtechnik 
ISSN: 2169-3536
Publisher DOI: 10.1109/ACCESS.2021.3128758
Appears in Collections:3 - Reported Publications

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