On the Feasibility of Wireless Communications for Safety Applications in Industry

被引：1

作者：

Sanz, Pablo ^{[1
]}

Seijo, Oscar ^{[1
]}

Canto, Martin ^{[1
]}

Montalban, Jon ^{[2
]}

Angueira, Pablo ^{[3
]}

Val, Inaki ^{[1
]}

机构：

[1] Basque Res & Alliance BRTA, Ikerlan Technol Res Ctr, Arrasate Mondragon 20500, Spain

[2] Univ Basque County, Dept Elect Technol, UPV EHU, Bilbao 48013, Spain

[3] Univ Basque Country, Dept Commun Engn, UPV EHU, Bilbao 48013, Spain

来源：

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS | 2023年 / 19卷 / 03期

关键词：

802.15.4; IEC; 61508; 61784-3; redundancy; SHARP; SIL; safety wireless; safety-related systems; COHERENCE BANDWIDTH; RADIO CHANNELS; PROBABILITY; ERROR;

D O I：

10.1109/TII.2022.3160631

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This article presents a methodology to characterize the reliability and safety capabilities of redundant wireless systems planned for an industrial application. The equations that describe the residual error are presented and studied in situations that model an industrial wireless scenario. We propose different voting systems and their performance is evaluated analytically and by simulations. Likewise, a voting system based on a combination of filtering and cross-checking techniques is proposed. This solution significantly reduces the probability of undetected dangerous events while maintaining availability under control. Moreover, an improved version with triple redundancy is also presented. The results demonstrate that it is possible to fulfill the requirements of standard IEC 61508 without compromising system availability statistics. The solutions have been implemented on hardware wireless prototypes to illustrate the effectiveness of the proposed voting systems.

引用

页码：2432 / 2441

页数：10

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