Now showing 1 - 3 of 3
  • Publication
    Metadata only
    Safety Architecture Proposal for Low-Latency Sensor/Actuator Networks using IO-Link Wireless
    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.
  • Publication
    Metadata only
    IO-Link Wireless Device Cryptographic Performance and Energy Efficiency
    (Institute of Electrical and Electronics Engineers Inc., 2021-03-10) ;
    Krush, Dmytro
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    Jockram, Jonas
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    In the context of the Industry 4.0 initiative, Cyber-Physical Production Systems (CPPS) or Cyber Manufacturing Systems (CMS) can be characterized as advanced networked mechatronic production systems gaining their added value by interaction with different systems using advanced communication technologies. Appropriate wired and wireless communication technologies and standards need to add timing in combination with security concepts to realize the potential improvements in the production process. One of these standards is IO-Link Wireless, which is used for sensor/actuator network operation. In this paper cryptographic performance and energy efficiency of an IO-Link Wireless Device are analyzed. The power consumption and the influence of the cryptographic operations on the trans-mission timing of the IO-Link Wireless protocol are exemplary measured employing a Phytec module based on a CC2650 system-on-chip (SoC) radio transceiver. Confidentiality is considered in combination with the cryptographic performance as well as the energy efficiency. Different cryptographic algorithms are evaluated using the on chip hardware accelerator compared to a cryptographic software implementation.
  • Publication
    Metadata only
    Coexisting wireless sensor networks in cyber-physical production systems
    (IEEE, 2016) ;
    Krush, Dmytro
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    ; ;
    Schulze, Christopher
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    Tiede, Sebastian
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    Herrmann, Christoph
    The increase of wireless devices due to the implementation of wireless sensor networks, cyber-physical systems with wireless communication interfaces and mobile monitoring as well as the installation of diagnosis applications into the shop floor improves real-time transparency of machine conditions and production processes. For a minimal invasive integration of such technologies into the brownfield the proposed solution has to consider wireless coexistence, e.g. wireless spectrum-sharing. This paper presents a communication concept dedicated to wireless sensor networks in production environments. As evidence of the functionality of the developed solution measurement results are presented and discussed.