Title:	Performing safety functions to monitor the protected area using a light curtain
Authors:	Ždánský, Juraj Medvedík, Milan
Citation:	2019 International Conference on Applied Electronics: Pilsen, 10th – 11th September 2019, Czech Republic, p. 187-192.
Issue Date:	2019
Publisher:	Západočeská univerzita v Plzni
Document type:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35541
ISBN:	978–80–261–0812–2 (Online) 978–80–261–0813–9 (Print)
ISSN:	1803–7232 (Print) 1805-9597 (Online)
Keywords:	bezpečnostní světelná opona;úroveň integrity bezpečnosti;SIL;pravděpodobnost;CTMC
Keywords in different language:	safety light curtain;safety integrity level;SIL;probability;CTMC
Abstract in different language:	In many applications, a light curtain is used to detect the intrusion of a human (or other protected object) into the danger zone. After detecting the interruption of the light curtain, a safety function is activated to bring the danger zone into a safe state (non-human). If the space taken by the light curtain is at the same time a working space, it is necessary to distinguish whether the light curtain interrupt is caused by man or material (material flows cannot cause the dangerous zone to be put into a safe state). There are several ways how to achieve this resolution, but additional (optional) sensors are commonly used. The paper deals with the parameters of additional sensors and how to connect them to the achieved Safety Integrity Level (SIL) of the safety functions realized by the help of the light curtain.
Rights:	© Západočeská univerzita v Plzni
Appears in Collections:	Applied Electronics 2019 Applied Electronics 2019

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