Public Address SystemDUBAI INTERNATIONAL AIRPORT EXPANSION (PHASE III) CONTRACT No. AX466
System OverviewThe system is based on 6 RX4000 main frames that work in independent way: twounits for low priority call and four units for high priority.The system can manage a total of 18 zones (expandable to 64).The system includes 3 independent BGM sources (back ground music) that canbe routed everywhere in any combination of zone or group of zone and selectedexternally. There are also 4 analogue busses for connecting a number of localconsoles in the gates, police, etc… and addressed to the specified area only.On other part of the CP4100 there are : one emergency, monitored, high prioritymicrophone with a PTT button for general call and two buttons to trigger 2messages; 4 paging microphones with 16 programmable buttons, 16 logic contactsto be connected to the fire alarm system, in order to trigger up to 4 differentmessages ( evacuation, alert, test, rest) that can be sent in different zones orgroup of zones ( two simultaneously) and stored in the VB4133 boards; 16 logiccontacts and 2 analogue inputs to be connected to the flight information system.Also the system includes two master announcement units (BM 4764) eachincludes 64 programmable buttons and LCD screen for programming, status andfault monitoring.
System block dig. Main announcer 1 Zone 1 Main announcer 2 Zone 2Fireman call station Zone 3 FIS (ASA)+ Red. Zone 4PC Workstation 1 Zone 5 High priority mainPC Workstation 2 framesMaintenance stationPC BGM + Red. Low – highMusic source CD 1 Priority AmplifiersMusic source CD 2FAS INT. switchLocal call station 1Local call station 2 Zone Low priority main Zone N -2 frames Zone N-1 Zone NLocal call station XnLocal call station Xn
RedundancyThe system designed to have a lot types of redundancy to insure theperformance of the proposed Public Address system1. Power supply redundancy Each main frame of the PA system includes two power supplies working on hot swap in case of malfunction.2. Main Processing units redundancy each main frame units (RX4000) is comply with EN 60849 (British standards for alarm routing massaging system, and for even further readability another mainframe units with each functional units have been added in case of malfunctioning of the processing unit.
Redundancy Mainframe Redundancy Connection to the other mainframes Priority Switch High & Low Active Inputs Standby Connection to the other mainframes
Redundancy3. Fall back redundancy in case of malfunction of the main digital network system (RX4000) and override system for eight zones with independent paging microphone console and an interface to the fire alarm, the fall back system connected directly to the amplifiers.
Redundancy4. Amplifier redundancy each amplifier is equipped with special electronic card (RB3300) to monitor the amplifier performance and to switch to a reserve amplifier in case of failure. For each 6 amplifier an amplifier is reserved as a backup unit.
Redundancy5. Amplifier switching card and monitoring speaker lines and automatic SPL levelling each amplifier is equipped with two special electronic cards (SB3300 & LB3300) to monitor the impedance of the speaker line and give an alarm in case of a faulty speaker, and the other card connected to the noise sensor microphones distributed in the airport areas and automatically adjusting the amplifier power level for the respective speakers connected to that area.
Redundancy6. Speaker line Class A connection for speaker connection in case of physical speaker line disconnected and odd and even connection to amplifiers . Power amplifier (Odd) 1 3 5 7 SB. / RB. / LB. board Power amplifier (even) 2 4 6 8 SB. / RB. / LB. board
Redundancy7. Server redundancy with each servers a hot swap redundancy server on standby mode is included
Announcement Zones types The system configuration is divided into depends on the type :1. Paging/BGM Zones2. Fire Alarm Zones3. Automatic Flight Information Announcement (Automatic interface with the FIDS) 1-Security related announcements 2-General Purpose announcements Z.C3.U2.212 3-Departure flight information announcements 1.5 4-Arrival flight information announcements 5-Area Local Restricted announcements 6-Prayer announcements
Public Address System paging microphone type-1
Public Address System paging microphone type-2
Public Address System paging microphone type-3
Call Stations I. Main Call Stations BM 4764The BM 4764 is desk mounted paging consoles and 64 programmable keys and indicators is ideal foruse in fire control rooms and comply fully with the part 8 and BS EN 60849.The unit provides the following functions;* High quality gooseneck cardioids condenser microphone.* Selection of loudspeaker zones or groups of zones for paging.* Selection of loudspeaker zones or groups of zones for music or other audio inputs.* Selection of pre-recorded messages and playing them in pre-set groups of zones.* Indication of status of loudspeaker zones.* LCD display showing system status and faults (if selected).* Support for up to eight users with different PINs. Engineer, fire officer, supervisor, unregulated andfour definable users.*Option to enter the fire officer user mode by operating a manual call point or similar monitored switch.
I. Main Call StationsThere are 3 ways a button can be defined;1. Functions Button – This is a key to carry out a certain function, for example send BGM to zones 4, 5and 7. One key – one job.2. Zone Button. This type of key defines zones to act on, but does not carry out any specific action.The zones accessed can stretch over any number of mainframes.3. Mode Button (including push-to talk-PTT). These carry out a specific operation to all the zonesactivated by any currently active zone buttons.
I. Main Call StationsUsers and PIN numbers.The unit support up to eight users, four of which are special and four general-purpose.Unregulated – no PIN number.This is the default for the unregulated user, the one who is current if no other user is logged in.* Fire Officer’s PIN – default 3333.The fire officer can log in by using the PIN, which can be changed if required.* Supervisor – default 2222This special number allows access to different functions than a general user. For instance, thesupervisor may be able to see fault information and adjust volume levels for paging and music.* Engineer – default 4444This special PIN controls the entire configuration, and has access to everything.*User 1, User 2, User 3, User 4Default 0001, 0002, 0003, and 0004.
Call Station II. Local (Gates) Paging Stations BM 3067a table-top stand with a dynamic microphone featuring high sensitivity and a wide-range frequencyresponse.The MB 3067 is used for controlling the unit’s “Alarm” and “General Call” functions and also makes itpossible to choose in which of the dedicated audio zones the microphone announcement is to bemade, interrupting the background music where present.
III. Fireman emergency call station BM 4631WMThe unit comprises a wall-mounted red steel case with a glazed door that contains a close-talkingnoise-canceling fist microphone plus ancillary electronics.When used with the Integral VA system, it is connected to a control card and, even in case ofmicroprocessor failure.The microphone is designed for use in noisy environments and incorporates a lip-guide to help theuser position the microphone close, but no too close, to his mouth.The front door is secured by a cam lock key.
IV. PC paging systemRecording Audio massages and sending it toAutomatic announcement system, by choosingthe dedicated zone through the AVIAVOX.
Call Station (Fall Back System) IIV. Paging console (8 zones fall back system) BM 8001The BM 8001 control consoles, from which each operator can send announcements to specific audiozones.The announcements can be made directly from the console microphone, or messages can be sentwhich have been pre-recorded on other equipment.The BM 8001 console also includes an alarm button which sends pre-recorded message number 1with absolute priority over messages from any other console, and enables a subsequent microphoneannouncement in all zones of the system.
• Speaker solution Two-way hi-efficiency directivity controlled speaker system90 X 60 constant directivity and to simple accessories it can be combined inclusters of 2 or more pieces to get wide and smooth coverage and to reduce theinstallation points. It is suitable for both indoor and outdoor installations (IP 65).The tweeter is a horn-loaded compression driver with phase plug, the only way toget real and crispy intelligible voice reproduction even in wide and noisyenvironments.The enclosure is constructed of high density UV resistant self-extinguishingpolystyrene with robust steel grill.PL8 X is available in white (PL8 XP-W), black (PL8 XP-B) or silver (PL8 XP-S)color, all models can be easily re painted to match any decor .
• 1 PL8 X High power ceiling• speaker• Compact design, light weight and limited depth makes the RCF PL8 X 2-way ceiling monitor loudspeakers ideal for use in any PA systems and background/foreground music systems where the good sound is required. The woofer is a high-excursion, PP coated paper cone – rubber surround design mounted in a tuned enclosure. The fabric dome tweeter is loaded on a constant Q wave guide to provide natural, smooth sound reproduction on a wide dispersion angle. The enclosure is constructed of high density UV resistant self-extinguishing polystyrene and includes a protective perforated steel grille. Back dome is made of aluminum.
• 2 PL 70/BS Ceiling speaker The PL 70 BS is a ceiling speaker featuring a flameproof steel bottom designed for recess installation in false ceilings or panels. It is especially suitable for broadcasting alarm messages thanks to highly intelligible sound reproduction and is resistant to the high temperatures reached during fires. The terminal connection boards are in ceramic material for input and output flameproof cables. A thermal fuse, protects the integrity of the line in case of heat affecting the speaker. Ground screw. Cables inside speaker made using flameproof leads.
• 2 PL 70/BS Ceiling speaker • Steel structure with white metal protection grid RAL 9003. • In conformity with British Standard BS5839 part 8, for speakers used to broadcast alarm messages.
Acoustical Study1 IntroductionSome areas of the airport are considered difficult and critical by the acoustical pointof view. So an acoustic simulation is required. (using Ray trace Method)• AREA 1: Departure, consisting of passenger control area, x ray area, boarding lounge• AREA 2: Check in area, including departure hall and check in area• AREA 3: Baggage, including arrival hall and baggage claim2. The GoalThe goal is to achieve an SPL between 80 and 85 dB with 60% of amplifierpower, and a STI better than 0.5 in public areas with 30% occupancy.
The integration in principle (PHASE-1) / step-1 1- Supply new PAS with the speakers for Area (1) 2- connect the existing L/R audio from the existing PAS (area-2). Audio feed NEW PAS
The integration in principle (PHASE-1) / operation All area are working without interruptions Audio feed NEW PAS
The integration in principle (PHASE-1) / steps T-3 C-2 Console console 1-Connect existing BOSCH consoles to existing PAS @ T2 cobraNet CP 2- No conversions required Console Internet (same protocol) 3- Integration-1 (Done) C3 Console cobraNet NEW (departure) Departure Arrival AREA-1 AREA-2 AREA-3 NEW BOSCH PAS
The integration in principle (PHASE-2) / steps T-3 C-2 Console console 1-Suppy D/A & Relay switch @ area 3 and connect it to the cobraNet New PAS-Rack2 (area-1) CP 2- convert cobraNet to GPI Console Internet 3- use the existing speakers (area3) without interruptions) C3 Console cobraNet 4- Integration-2 (Done) NEW (departure) Demolished Arrival Rack1 Rack2 AREA-1 GPI AREA-2 AREA-3 CON D/A NEW NEW (Relays PAS PAS (Switch)
The integration in principle (PHASE-3) / steps T-3 C-2 Console console 1-Suppy new speakers for area-2 and connect them to NEW PAS cobraNet area-1 CP 2- Connect AVIAVOX to new PAS Console Internet 3- Integration-3 (Done) C3 Console cobraNet NEW (departure) Arrival Demolished Rack1 Rack2 AREA-1 GPI AREA-2 AREA-3 CON D/A NEW NEW (Relays PAS PAS (Switch)
The integration in principle (PHASE-3) / steps T-3 C-2 Console console 4-Suppy new speakers for area-3 and connect them to NEW PAS cobraNet area-1 CP 5- Connect AVIAVOX to new PAS Console Internet 6- Integration-(completed) C3 Console cobraNet NEW (departure) Arrival Rack1 Rack2 AREA-1 GPI AREA-2 AREA-3 CON NEW NEW PAS PAS
The integration in principle (PHASE-3) All areas are working without interruptions