The baggage system of the airport includes departure subsystem and arrival subsystem. Departure subsystem includes conveyor, baggage recognition, automatic Sorting machine, horizontal shunt, vertical shunt, electronic control equipment and network link equipment. The baggage is transported to the collection conveyor through the check-in counter, the transportation of the ordinary conveyor, the tracking and identification of the RFID system, the primary sorting of the horizontal splitter and the vertical splitter, the baggage is transported to the designated automatic sorting machine for precise sorting, and the automatic sorting machine will transport the baggage to the departure turntable of the corresponding flight for packing according to the division of the flight. DCV baggage handling system, also known as intelligent destination code car system, mainly assumes the task of high-speed transportation of passenger baggage, the system has multiple redundant paths for baggage sorting, baggage sorting can be run according to the optimal path, and the fastest arrival of the corresponding sorting destination is only 2min, which minimizes the baggage delivery time.

The baggage system is 32km long (belt system 14km, pallet system 18km), with about 4,800 cars. The baggage system is equipped with 11 check-in islands, 22 collection lines, 42 departure turntables, 21 arrival turntables, 2 early arrival systems with a total capacity of 4,000 pieces of luggage, 2 transfer systems, 11 three-level security screening rooms, and 2 transfer and re-ticket systems. The system's designed outbound baggage handling capacity is 15,400 pieces /h, and inbound baggage handling capacity is 7,900 pieces /h, meeting the passenger throughput of 45 million passengers.

At the same time, the baggage system is equipped with RFID electronic tag identification system, which records the personal information of passengers, departure, arrival, flight number and other information. Through the RFID card reader, passenger baggage information can be read at high speed, solving the problem that bar code labels are blocked or there are multiple bar codes in the luggage, and realizing efficient tracking and sorting. The Early Arrival system is an independent sorting system with a pallet-type storage mode that can hold up to 4,000 pieces. It can also accurately and efficiently extract single or multiple early-arrived luggage according to the system setting, improving the sorting function of the system.

The new terminal has two check-in islands equipped with fully self-service baggage drop facilities, evenly divided between domestic and international use. Passengers using domestic self-service check-in equipment need to check in at the self-service check-in equipment and print baggage labels, and baggage can be self-checked with labels tied. International self-service can print the baggage barcode label in one device, and tie the baggage barcode under the guidance of the device to complete the consignment process. If the baggage needs to be checked for security reasons, there will be corresponding prompts on the screen to direct the passenger to the corresponding opening room for inspection.

Baggage handling system process

The check-in counter is equipped with a three-stage check-in conveyor. The first section consists of a scale conveyor belt with load and weighing functions as well as labelling functions, the second section is used for conveying control of the counter X-ray security screening machine, and the third section is responsible for transporting the waiting baggage to the collection belt.

Disposable RFID baggage tags will be used at the check-in counter. In addition to the baggage code, the RFID chip in the tag is also written into additional user-defined information in addition to the IATA barcode at the time of printing. Luggage with irregular shape and soft bag nature that is easy to roll and slip on the conveyor belt surface should be loaded into the empty luggage basket before being transported.

The second stage of the check-in conveyor, that is, the counter type security inspection machine conveyor, is controlled by the baggage handling system and needs to achieve self-locking and interlocking functions, that is, the security inspection machine shall not enter the next piece of baggage before waiting for the result of the baggage in the channel, and only one piece of baggage is allowed to enter the double-channel security inspection machine at the same time.

After the baggage passes through the security check machine, the security check will check the items in the baggage. After the check is completed, the baggage will stay in the third check-in line to wait for the baggage security result. As a result, baggage that is safe to pass through will be introduced into the collection line, which will be tracked to ensure that it is always in a safe condition and loaded onto the DCV tray and transported to the departure shipment turntable at the destination.

There is a timeout limit for baggage waiting for security check interpretation, the default is 2min, and the status will be sent to the baggage security system after the timeout, and the baggage will be sent to the opening room for processing. The baggage rejected by the security check is also imported into the collection line and routed through the splitter to the checked baggage opening room at the end of the check-in island for bag opening inspection. Baggage that requires further inspection is also diverted to an open room for processing, where it is further checked by security personnel to ensure its safety before entering the baggage system. Baggage that passes this process will be re-scanned and returned to the baggage handling system. After the baggage is imported into the check-in collection belt, the baggage handling system tracks the baggage through the PLC retroactive algorithm before the sorting point in the opening room.

The baggage tag reading device is set at the sorting point before the opening of the baggage room, which reads the RFID tag of the baggage and receives the interpretation result sent by the communication server of the baggage security system. By comparing the execution signal of the on-site security checking machine with the PLC tracking of the above baggage handling system, it can determine whether the baggage should be diverted to the sorting room. Lost baggage will be sent to the compartment when security checks trace it at the drop-off point in the compartment. The entrance conveyor line of the open compartment is installed in a prominent position to distinguish the status of baggage entering the open compartment, including tracking loss, and various rejection states, and the indicator light is accompanied by the relevant type of identification information. All the information in the tag is read by the barcode /RFID ATR before the baggage is loaded into the pallet, and it is finally tied to the pallet information of the DCV for transportation and sorting.

High intelligent logistics data system

The intelligent data management system tracks passengers' baggage transportation, sorting, packing, installation, unloading and other links in real time. Passengers can query the location information of their luggage through the APP. Airports and airlines can check, monitor, track and find tens of thousands of pieces of luggage every day through the big data operation system. Some domestic airports attach a chip to the baggage bar code, and implant the flight information and baggage information of passengers' baggage into the chip. When passengers' baggage enters the baggage system, the information is read into the baggage system through high-precision baggage identification device (RFID), which is used as the basis for baggage tracking, transportation and sorting in the baggage system: Baggage information can be read through the staff's handheld terminal, which is an important basis for the allocation of packing, loading, unloading and arrival baggage information. Meanwhile, baggage data information can be shared with passengers, and passengers can track their baggage through the whole process by logging in to the APP.

High reliability mechanical equipment and backup system

The baggage handling system of civil aviation airport has high requirements for the timeliness and accuracy of baggage transportation and sorting, so it has high requirements for the mechanical equipment and devices of the baggage system, especially the reliability of the mechanical equipment and devices. The design of the processing system is unreasonable, the reliability of the system is low, and the frequent equipment failure leads to the interruption or inefficiency of baggage transportation and sorting, which will bring serious consequences such as baggage transportation delay, flight delay, and passenger complaints. In addition, the backup principle of mechanical equipment and devices and other systems should be considered in the design of baggage handling system. The baggage flow direction can be changed through horizontal shunt and vertical shunt, and the luggage can be sorted by multiple sorters in backup mode. Multiple systems can operate the luggage sorting separately, coordinate the luggage sorting at the same time during the baggage peak, and switch the baggage processing between each other when the fault occurs. Thus, the system backup redundancy design is achieved.