Telebag is an innovative system in terms of baggage handling but it is based on straightforward concepts and standard components. With the Telebag system all bags that are captured on the cart are trackable and traceable at all times, from the check in desk to delivery chute. It is today's technology that is satisfying the some times conflicting demands of the ever changing needs of Airlines, government security requirements and international regulations. LLA made the decision that Telebag suited the operational and performance requirements better than alternative proposals.
The Telebag System comprises "smart" carts with on-board control and communications running on plug-together sections of track. It is important to emphasise the benefit of carts that are controllable. Plus, they are all standard factory manufactured and assembled tested products.
Each cart is designed to carry securely one bag in a wide range of sizes, shapes, and degrees of dilapidation. The cart bed consists of a conveyor section used to centralise the load and provide robust transfer to and from the cart. Underneath, two linear motors with no moving parts power the cart. In the unlikely event of motor failure, a single motor can power the cart. A process logic controller communicates with the central control computer. Control is continuous throughout a cart's journey, and operates on two levels.
Level One, the "Mission Statement", is concerned with information defining the onboard bag and its destination within the system. This is constantly refreshed throughout the journey to take in new information such as security status ie "has a bag passed its X-ray test or has it been rejected". Level Two, Controls. This function concerns stopping, starting, speed and the "pitch" - the space set between carts.
The track itself carries bus bars for power and communication, and is made up of modular straights, curves with up to two metre radius, merges, emerges and two kinds of maintenance section which allow carts to be removed from or injected into the system quickly and easily.
In the central control room, Telebag system information is displayed on PC screens alongside X-ray monitor images. The position and status of every bag can be called up instantly, as can reports on any part of the system. Also instantly accessible is information on speeds and bag flows with the ability to modify the cart management to suit system demands. These facilities assist operators to "drive" the system to suit peaks and troughs in passenger or aircraft
movement enabling smoothing out peaks generated by
increased activity such as check-in or dispatch.
Information from the system is also collated and analysed by computer to help statistical analysis of passenger and baggage movement and system performance. Several enhancements were made to the Telebag system product during the development of the solution for Luton including touch screen technology at check-in connected to the FIS (Flight Information System). A menu of possible destinations is presented to the check-in clerk, so that bags can be assigned without the need for scanning of barcodes or other ID devices. A 100% accuracy of sortation is achieved, collecting the sortation data electronically and eliminating the need to Tag read. The screen can also relay information to the clerk about system status, which can, if relevant, be passed on, removing some of the frustration at checkin.
The system is simple to grow. At concept the layout installed and was simulated to provide a further 60% capacity just with the addition of extra carts; passenger numbers are now exceeding 7million from the 4 million at concept. Modular extension is possible by adding further primary and Telebag loops. Alternatively, the system track could be extended to deliver bags at head of stand or to pick up at car parks or railway station.
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