Robotic testing of radio frequency devices designed for industrial safety

Ruz, Mario L.; Vázquez, Francisco; Salas-Morera, Lorenzo; Cubero-Atienza, A.J.

doi:10.1016/j.ssci.2012.03.018

Cited by 9 publications

(7 citation statements)

References 20 publications

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“…Therefore, efforts are required to improve and develop new safety units to cover the safety requirements of a constantly growing industry. The performance of new safety devices, based on wireless technology, has been analysed by Ruz et al (2012).…”

Section: Remarksmentioning

confidence: 99%

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Overall availability and risk analysis of a general robot–safety device system

Vanderperre¹,

Makhanov

2013

International Journal of Systems Science

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We analyse the availability of a general robot-safety device system characterised by the feature of cold standby and by an admissible risky state. In contrast to the previous literature, we allow a general failure-free time distribution for the robot and, as an example, we present computational results for Coxian failure and repair time distributions. In order to decide whether the risky state is admissible, we introduce a risk criterion based on the notion of rare events. The criterion is always satisfied in the case of fast repair.

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Section: Remarksmentioning

confidence: 99%

“…Email: makhanov@siit.tu.ac.th dangerous neighbourhood of the robot (see e.g. Ruz, Vazquez, Salas-Morera, and Cubera-Atienza 2012). Eventually, the safety device can send a stop signal to the robot.…”

Section: Introductionmentioning

confidence: 99%

Overall availability and risk analysis of a general robot–safety device system

Vanderperre¹,

Makhanov

2013

International Journal of Systems Science

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“…WSNs can provide new capabilities for improved safety for several military and civilian applications. Triggering alarms and/or stopping machines when human intrusions into dangerous areas are detected could be achieved by knowing the position of the workers [3]. Localization of personnel in underground operations, such as those carried out in the mining industry, can be extremely useful in case of an accident.…”

Section: Introductionmentioning

confidence: 99%

“…The connectivity (whether two nodes can communicate) can also be used for localization purposes. Ultra-wideband (UWB) technology is a promising solution due to its potential for high accurate localization [3,5,8,9,10], specifically with time-based positioning techniques due to the high time resolution of UWB signals. Regardless of the technology employed, the previously mentioned signal metrics are susceptible to different sources of errors that must be considered to carry out the location task with high accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…If the localization task can be implemented as described in Figure 2, innovative applications can be developed in different areas. As already mentioned, within the context of industrial safety and manufacturing environments, the development of WSNs in closed spaces, such as the mining industry or other types of indoor facilities can increase the safety of workers by their detection inside unsafe areas [3]. In extreme cases, such as collapse situations in mining operations, knowledge of the position of workers can be critical in rescue operations.…”

Section: Introductionmentioning

confidence: 99%

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Simulation Tool for the Analysis of Cooperative Localization Algorithms for Wireless Sensor Networks

Ruz

Garrido

Jiménez-Hornero

et al. 2019

Sensors

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Within the context of the Internet of Things (IoT) and the Location of Things (LoT) service, this paper presents an interactive tool to quantitatively analyze the performance of cooperative localization techniques for wireless sensor networks (WSNs). In these types of algorithms, nodes help each other determine their location based on some signal metrics such as time of arrival (TOA), received signal strength (RSS), or a fusion of them. The developed tool is intended to provide researchers and designers a fast way to measure the performance of localization algorithms considering specific network topologies. Using TOA or RSS models, the Crámer-Rao lower bound (CRLB) has been implemented within the tool. This lower bound can be used as a benchmark for testing a particular algorithm for specific channel characteristics and WSN topology, which allows determination if the necessary accuracy for a specific application is possible. Furthermore, the tool allows us to consider independent characteristics for each node in the WSN. This feature allows the avoidance of the typical “disk graph model,” which is usually applied to test cooperative localization algorithms. The tool allows us to run Monte-Carlo simulations and generate statistical reports. A set of basic illustrative examples are described comparing the performance of different localization algorithms and showing the capabilities of the presented tool.

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