Security Dealer & Integrator

JUL 2018

Find news and information for the executive corporate security director, CSO, facility manager and assets protection manager on issues of policy, products, incidents, risk management, threat assessments and preparedness.

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26 Security Dealer & Integrator / July 2018 corrosion. A standard screw that uses SAE 304 (EN 10088-2 1.4301) stain- less steel will not withstand extreme weather – especially in coastal areas. For higher levels of reliability, SAE 316 (EN 10088-2 1.4401) stainless steel screws should be used. Scratch resistance: A scratch-resis- tant screen is essential for surveillance cameras deployed on the exterior of trains, because the train's slipstream oen causes small stones and grit to get sucked in and collide with the front of the camera. Integrators have two options: 5H tempered glass, which is very hard and provides good scratch resistance but does not effectively protect against deliberate acts of vandalism; or, plas- tic, which is less likely to break when vandalized, but is more susceptible to being scratched. Since the chance of abrasion from small stones and other debris poses more of a risk than vandalism, most train customers will opt to deploy a front casing made from tempered glass as opposed to plastic in order to fulfill project requirements. Challenge: Installation and Maintenance In order to increase the chances of a camera being suitable for a particular deployment, integrators should offer train operators a selection of different lenses, as well as an adjustable pan and tilt function to increase the likelihood of meeting the varied requirements for each project. In addition, it is essential that the camera components fit into a very compact unit to comply with the EN 50155 standard. EN50155 is an international stan- dard covering electronic equipment used on rolling stock for railway appli- cations, including the equipment's temperature, humidity, shock, vibra- tion and related parameters. is applies to video surveillance in that the components of a camera must not move when a train is in motion. e strong vibrations when trains travel at high speeds means any mov- ing parts are weaknesses that are liable to malfunction. is includes features such as pan, tilt and zoom. When a camera is attached to a train, an adjustable pan and tilt func- tion enables the integrator to set the angle the train customer wants, but it must be locked before the train becomes operational. When train operators have this increased flex- ibility, it significantly increases the chances that the installation will meet the project requirements. In some situations, an adjustable pan and tilt function may be insuffi- cient, such as when a train operator needs the camera to record the plat- form and the train door at the same time. Alternatively, they may request multiple cameras on the train that all require different viewing angles. e best way to overcome this problem is to provide the train operator with a variety of different lens options to ensure the cameras can always fulfill the project requirements. Integrators must ensure that all of the different lenses can still fit within the compact housing and that the viewing angle is not impacted by the housing design. ■ » Kevin Shen is product manager for Moxa. Request more information about the company at The camera's angle must be locked before being deployed on trains to ensure it meets the EN 50155 standard. Strong vibrations when trains are traveling at high speeds means moving parts – including features such as pan, tilt and zoom – are liable to malfunction. Video Surveillance © Istock

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