Wireless systems for machinery safety

Wollert, Joerg F.

doi:10.1109/rem.2015.7380377

Cited by 2 publications

(3 citation statements)

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“…As indicated in [27], existing wireless solutions often cannot offer sufficient performance with respect to real-time and reliability requirements. Furthermore, energy concerns of wireless safety proposals [31]- [33] as well as the joint transmission of safety and non-safety data are significant. As a result, the extension of IOLW as a wireless safety solution will be presented here.…”

Section: Applications For Iolw Safetymentioning

confidence: 99%

Safety Architecture Proposal for Low-Latency Sensor/Actuator Networks using IO-Link Wireless

2022

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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.

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Section: Applications For Iolw Safetymentioning

confidence: 99%

Safety Architecture Proposal for Low-Latency Sensor/Actuator Networks using IO-Link Wireless

2022

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“…The safety defenses work against specific threats and this mapping is shown in Table 1 . For example, the threat of message repetition due to channel noise, can be mitigated by building the defense mechanisms [4] like sequence number, time stamp and time triggered architecture etc... Thus, building the defenses in the protocol enhances the safety of data communication.…”

Section: Overview On Industrial Functional Safetymentioning

confidence: 99%

“…It is observed in [3] that the value proposition for the Industrial WSN (IWSN) has increased due to its deployment in closed loop control and safety systems. Further, WSN is an inseparable part of industrial IoT and the concept of Industry 4.0 is characterized by flexible manufacturing, collaborative robotics supported by reliable communication between sensors, actuation systems and computing elements [4] , [5] . Hence, we are of the view that WSN systems can be deployed for safety applications after evaluating its end-to-end Safety Integrity Level (SIL) [6] .…”

Section: Introductionmentioning

confidence: 99%