Ethernet – the communication infrastructure for your mission critical safety system?
By D Kowensky, H3iSquared
Electricity+Control, February 2015 (pages 4 – 6)
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The amount of automation on industrial and utility sites is rising in order to increase production and safety, with control of the various outlying areas generally handled from a central control room. The presence of a proper, reliable, mission critical safety system is becoming mandatory in order to properly monitor and protect the site and personnel. Although the name, a mission critical safety system, is pretty self-explanatory, it is important to understand what exactly this type of mission critical safety system provides; the importance of communications within the mission critical safety system, and how Ethernet can cater for mission critical safety systems communications.
When we talk about a mission critical safety system, we are referring to a mission critical safety system covering a full site (or tying together multiple geographical sites) made up of various end devices (PLCs, RTUs, cameras, telephony products etc) that provides safety in the form of monitoring areas, providing visual and audio communications to remote areas as well as access control and other subsystems, such as fire detection.
- The amount of automation on industrial and utility sites is rising.
- Control of the various outlying areas takes place from a central control room.
- Ethernet is a fit for mission critical safety system for the protection of the site and its personnel.
Rise of IP-based camera surveillance systems
By R Alves, Axis Communications
Electricity+Control, April 2015 (pages 8 – 9)
Enquiries: Visit www.axis.com
As the cost of bandwidth goes down, the appeal of IP-based camera systems goes up for companies that require a flexible, cost-effective surveillance solution with enhanced functionalities such as remote accessibility and better scalability.
Within CCTV (closed-circuit television) surveillance images are captured and recorded on a digital video recorder (DVR), with the images being relayed through analogue cables going from the cameras to the DVR in the surveillance room. IP-based surveillance cameras store their data on more common PC storage devices by way of a wireless network or wired set-up (CAT-5 network cables), thus helping businesses save on installation costs as existing network infrastructure can be repurposed for surveillance.
Unlike an analogue system, IP security cameras can be installed at any location, no matter the distance from the surveillance room housing the storage equipment and can also be easily moved from one location to the next, without any cabling needing to be replaced.
• IP security cameras can be installed at any location.
• Any amount of recordings per camera can take place simultaneously.
• There are advantages and challenges in IP surveillance.