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Electronics



It is a real time monitoring of the accesses at the site . It is an on-line system consisting of :
-Powerful Central Host Computer
-Satellite workstations = repeaters for CHC (Control Host Computer)
 -Pair data capturing workstations
 -Editing the cards .
Setting up card holders data back .
Several loops of control panels .
Door locking devices .
 -Electromagnetic locks .
 -Electric strikes .
Exit devices .
 -Emergency exit bars
 -Egress buttons
 -Push buttons
Door closures with electric release ( Fire rated doors ) .
Annunciation panels.
Many other components and interfaces.


The CCTV system is a closed circuit television. This system is mainly used by security personnel to monitor the traffic in a facility. The system is able to switch any input video signal to any output monitor, using the video switching matrix.

Also, it is possible to switch any sequence of pictures to any video output, with no limits on simultaneous switching. The video output module of the video-switching matrix amplifies the video signals and interfaces with the control unit CPU/MX from which it receives the switching commands and to which it provides information about its own status.

The CPU/MX coordinates the activities of all its sub-system, so as to obtain from the system as a whole the desired functioning.





The Intercom system in RHIAB project, Building C1 , provide connection between a central room and existing lifts.
The system is based on the following:

.A Digital Annunciator Panel displays incoming calls from lifts and link faults.

.A flush mounted master station which, via its keypad, allows the operator to call any particular lift, other master station, and even to pass into Conference and all call features.

.The main module of the system supervises all the incoming and outgoing calls, it is installed in Central Control room.

.A Digital Network Adapter offers the possibility of interfacing the system to computer utilities. It is installed in Central Control room.  

The Fire Alarms Systems are present in all Rafik Hariri International Airport - Beirut facilities complex. Two different Fire Alarm Technology are being implemented :
- Analogue Addressable System . It is exclusively installed in C1 terminal building and VIP pavilion.
- Analogue conventional system. This kind of system is installed in all Annex Buildings, Run Way Substations, and Under Passes sub stations.

Analogue Addressable system
The analogue Addressable system is based on state of the art analogue software addressable technology. This Fire Alarm is divided into three main blocks located in the central room, east satellite repeater room, and west satellite repeater room, all networked via RS-485. The Fire Alarm System monitors and controls more than 2500 devices distributed through the terminal building and it is interfaced to other low currents systems and other Fire Alarm system in some Annex buildings.

Analogue Conventional System
Most of the buildings are equipped with a fire alarm system which consists of a multi zones satellite fire alarm cabinet, alarm initiating devices ( detectors and manual pull station) and alarm devices (Horn, Bells).
The fire alarm control LSS4 itself consists of conventional class B detection zones, 6 alarm signaling circuits, power supply/charger and standby sealed lead with batteries . It is a self contained fire alarm control system designed for medium size local system applications. The other buildings have another kind of Fire Alarm System of smaller capacities.


The Announcement Control Systems integrate the flexibility and the reliability of digital technology into the professional audio field. These systems are multi-function, professional announce system, whose operations and digital processing are controlled by microprocessors.

The existent Public Address System in RHIAB is a computer controlled audio switching matrix. The heart of the system is the Announcement Control System. The ACS is configured for more than 50 microphone inputs and more than 100 speaker zone outputs. Each speaker zone output from the ACS is fed through one of the 3rd octave equalizer which are located in the card frame rack. In zones where there is a large influx of people, there is Ambient Noise Sensor System, which job to raise and/or lower the level of the public address system in that zone automatically, depending on the noise level in the area.

An important function of the ACS is the Digital Recorded Playback and Permanent Digital Recorded Playback systems.

The RLG AUTOMATED GUIDE-IN SYSTEM has been developed to guide in and stop aircraft in a precise position at airport terminals . The system is designed to accommodate all aircraft types on a single docking device, without error factor involved with changes in height of aircraft due to variation in gross weight.

After proper arriving aircraft has been selected and system test procedures have been followed, the system is completely automatic. Lights on the control panel and LCD screen will monitor aircraft indicator and light housing .

When aircraft arrives at the beginning of the centerline, the laser scans and acquires the nose of approaching aircraft and commences tracking. The acquisition of the aircraft is tracked until the final stop.

After acquisition, the docking system measures the distance between the laser head and the nose of the aircraft . Throughout the docking process, the communication unit calculates the closing rate information and displays it on the display unit, enabling the pilot to properly dock the aircraft.









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