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| What is Electronic Access Control? |
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Access Control is a matter of whom, where, when and what for. An access control system determines who is allowed to enter or exit, where they are allowed to exit or enter, and when they are allowed to enter or exit. Historically this was partially accomplished through keys and locks.
When a door is locked only someone with a key can enter and/or exit through the door depending on how the lock is configured. Mechanical locks and keys generally do not allow restriction of the key holder to specific times or dates. Mechanical locks and keys do not provide records of the key used on any specific door and the keys can be easily copied or transferred to an unauthorized person. When a mechanical key is lost or the key holder is no longer authorized to use the protected area, the locks must physically be changed.
Access control systems like the name suggests, allow you to control the access of visitors and staff to office buildings, schools, and other sensitive areas through the use of ID tags, proximity cards, fingerprints, scanners and keypads. Electronic access control uses the power of computers to solve the limitations of mechanical locks and keys. A wide range of credentials can be used to replace mechanical keys. The electronic system determines whether to grant access to the protected area based on the credentials presented and when it is presented.
If access is granted, the door is unlocked for a predetermined time period and the transaction is recorded. If access is refused, the door remains locked and the attempted access is recorded. The system will also monitor the door and sound an alarm if the door is forced open or held open too long after being unlocked. |
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| Access Control System Operation |
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Sometimes the best way to understand an Access Control system is to walk through a typical use of the system. In access control this typically begins when the user presents the assigned credential to the appropriate reader. The reader conveys the credential's information to the device that makes the access decision. In most electronic access control systems this is a highly reliable independent control panel. The control panel is aware of the current time and date and decides whether the holder of the presented credential is allowed access at this door at this time and date. Whether access is granted or denied, the transaction is recorded providing a history that can be consulted when questions arise about who was in the protected area.
An access control point can be a door, turnstile, parking gate, elevator, or other physical barrier where the granting of access can be electrically controlled. Typically the access point is a door and the access is controlled through either a magnetic lock or an electric door strike. Electronic access control systems today range from standalone single door controllers to complex networked systems integrated with closed circuit television systems, burglar alarm systems and other building control systems. The selection of the proper credentials and readers the system features needs, with the many choices available for installation and implementation can require complex planning and difficult decisions.
Contact DGX today to help you define your needs and choose an appropriate solution.Call Today for a Quote! |
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