Access Control
With increasing frequency today, steps must be taken to restrict unauthorised movement within or entry into buildings. This is crucial where a site houses computers or sensitive company data. At its simplest, it could be access to a social club or a sports club locker room. Entry methods can include digital keypads, magnetic card readers, card and key readers, swipe and proximity readers. In extreme cases, they can also incorporate hand geometry and fingerprint readers. These can be in a simple stand alone operational mode or online controlled by a microprocessor or computer.
On line systems can provide control of access levels time zones and reader terminals. These can start with as little as two readers and go to an unlimited number. They can also incorporate alarm monitoring, time and attendance and graphic map displays. These can operate as a system in their own right or be part of an integrated arrangement. In addition, where required, facilities can be provided for the production of identity photograph badges as part of the access cards used in the system.
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Door Entry
Both audio and video versions are available. These can be in single or multiple configurations. In areas of high vandalism, these units can be custom-built entry panels made of stainless steel. Systems of this nature can be used internally and externally. Facilities such as car parks, computer suites, blocks of flats and retirement homes can all benefit from the installation of this type of equipment.
The current range of products available can also, if required, incorporate small access control systems similar to those detailed elsewhere.
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CCTV
These systems can be as simplistic as one camera feeding into one monitor; equally the systems can be highly involved and complex. Applications of television can include process control, retail environments, crowd control, defence establishments and sports complexes.
Another application is in the monitoring of traffic flow; this can be motorways, railway stations and crossings, sea and airports.
Cameras can include facilities to pan, tilt and zoom into target objects. Operational capability can range from indoor high light situations to star light intensified units.
Where video recording is required, there are a number of options available which are as flexible as the camera systems themselves. This can be as basic as a single video recorder linked in line to the monitor viewing the system. It can be further extended to incorporate the video recorder working together with a conventional analogue multiplexer recording a number of pictures simultaneously. At the absolute extreme, the system can incorporate full digital recording where the images are stored on computer hard disks and where applicable, data support tapes to allow longer terms of times and recording. Systems such as the latter can be operated on a full network basis across the client's own network or alternatively, across the web using a web browser.
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Intergrated Systems
Situations can arise where combinations of one or more of the above electronic systems may have to be installed and integrated together. This would typically involve data being passed between systems to allow one to react to an action emanating from others.
Typical examples would be, an intercom being used at a car park barrier or a building entrance automatically displaying a camera to the operator on a monitor adjacent to the intercom master receiver. Another typical scenario would be an external detection device being used to trigger graphical map displays on an access control system whilst at the same time switching cameras to provide a predetermined series of pictures of the area of intrusion. In very extreme situations, an access control system could be configured such that when a card was operated at a high security entrance point, the card number together with the stored picture would be automatically displayed for verification by a live camera covering the doorway to confirm the cardholder was exactly who the system said they were.
Such types of systems will normally involve the installation of rack mounted centralised hardware located in a given equipment room space. This would then be linked to a relevant control console with the appropriate computer terminals, CCTV monitors, intercom units, telephones etc.
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