User Manual

Total Building Solution (TBS)

Building Technologies 049_Archives_and_Libraries_A6

V10271399_a_en.doc

Fire Safety & Security Products 03.2009

5.5.4 Principle of the RFID system

Active Tags send Radio Frequency and Infrared signals at constant intervals to RF

and IR Readers placed on the ceiling or walls. At exit points, LF exciters send a

low-frequency signal, picked up by the tag and sent to the RF or IR readers as well

to control exits and choke points.

Tags are monitored at all times against disappearance (beacon signal), removal

(sabotage sensor) and low battery.

5.5.5 Key Components

Wireless tags: come in different format factors according to application:

– Asset tag: The Asset Tracking Tag is a miniature, unified active long-range Ra-

dio Frequency (RFID) and Infrared device designed for the real-time tracking of

mobile assets or people. The Asset Tag is screwed or fixed on valuable goods

or equipment. Asset, belt & pendant mounting clips available

– Staff tag: The Active Identity Badge is designed for staff or lone worker identifi-

cation and safety, hands-free door access, time & attendance or asset escorting

applications. Features up to 5-year estimated battery life, two emergency and/or

duress signaling push buttons, IP66 water rated housing, plus an onboard LF

receiver. Usable as a clip-on photo-ID personnel badge or with its open-front

card holder may be bundled together with a credit-card size access control card.

Readers and Exciters:

– RF reader: A supervised; 433MHz fixed receiving device that detects and relays

'Location' & 'State' data in real-time from Active RFID Tags to host applications.

Supports wired and wireless Ethernet/Wi-Fi networks, RS-485 and XML mes-

saging. RF readers exist as indoor versions (ceiling/wall mount) with up to 20m

radius range (through concrete walls) or as outdoor versions (150-250m range

open field).

– IR reader: the High-Definition IR Reader is a supervised, fixed infrared locating

device. The reader is designed to detect and relay sub-room ‘Location’ and

‘State’ data in real-time from Active RFID IR-Enabled Asset or Personnel Tags

to host applications. The IR reader ensures a room precision location (indirect

line of sight required).

– LF exciter: Low Frequency (LF) Exciters emit user adjustable, electromagnetic

(125KHz) fields that are designed to cover interior or exterior doorways, gates

and other limited access chokepoints. As a result, whenever an individual or as-

set bearing an Active RFID Tag enters the exciter's magnetic field; the mobile

tag is prompted to transmit its pre-programmed data messages. These mes-

sages are detected by the RF reader infrastructure and are either locally proc-

essed or relayed over the network to the EIRIS server machine in support of the

configured tracking or security application. LF Exciters can be regulated to gen-

erate a 50cm to 3m coverage.

– Server: the Eiris software manages system logic, floor plans, zones, rights, as-

sociation models, alarm scenarios, forwarding of alarms onto pagers, etc.