Specifications

page 39
Access control systems allow access or egress to all forms
of premises, these include offices, apartments, schools
and high security areas etc. where controlled / secure
areas are required.
VIDEX manufacture 3 specific product ranges
of access control.
SYSTEMS THAT OPERATE USING A DIGITAL
CODE (CODELOCKS).
These fall into two groups:
Self contained (stand alone) codelocks.
Serial codelocks connected to a control unit
housed in a secure area.
SYSTEMS THAT OPERATE USING PROXIMITY
KEY READERS (VPROX)
These fall into two groups:
Self contained (stand alone) Vprox.
Serial Vprox readers with control unit housed
in a secure area.
SYSTEMS THAT USE BIO (FINGER PRINT)
READING TECHNIQUES (BIO ACCESS).
These fall into two groups.
Self contained (stand alone) Bio Access.
Serial Bio Access with control unit housed
in a secure area.
Access Control Systems
On digital “stand alone” codelocks, the “control circuits”
and “door open” relays are housed within the codelock.
The user operates the system by entering the access code
via the keypad, if the code is correct, the relevant relay
will be enabled.
On serial digital codelocks, the keypad is the interface
through which the user operates the system. The “control
circuit” and “door open” relays are housed within the control
equipment which should be installed in a secure area. A user
enters the access code through the keypad, the keypad
transmits the code to the control unit. If the code is correct
this will enable the relevant relay. These systems offer a
higher level of security than stand alone codelocks.
Where proximity key systems are used, the keypad of a
codelock is replaced with “proximity keys”. The application
of the proximity system will determine whether the control
electronics is self contained or remote from the proximity
reader, higher security applications will require the control
electronics and lock relays to be housed in a secure area,
the proximity reader will communicate with its associated
control unit through a serial connection. Where internal
applications for proximity access are required, this may
allow for the proximity reader, its control electronics and
lock relays to be housed within the same unit. Where more
complex and secure systems are required, a PC database
can be employed to record all transactions.
Bio Access (finger print reader) is the most recent addition
to the Videx 4000 series of modules.
Bio Access offers an even higher degree of security than
either codelock or proximity as the system is reliant on an
individuals finger print. The new range of modules are
equipped with a finger print reader (thermal sensor) and are
currently available in either a stand alone version storing up
to 950 finger prints., or as a distributed system controlling
up to 64 Bio access readers, storing up to 3000 finger prints.
The readers are connected using an industry standard
RS485. A PC can also be connected for remote storing of
finger prints and logging of all transactions using
an RS232 connection.
Access Control Systems