This second method allowed for four parcels instead of three.īoth of these methods needed multiple trays to pass before another parcel could be discharged from the same lane. This was the naive utilization method.Īs for the optimized utilization method, where the size of the parcels was taken into consideration, the red parcel would be placed on the larger tray. The current logic with the different sizes of the lanes did not consider the size of the parcels related to the size of the trays.Īs illustrated in the picture below, if the red parcel was first, the greedy algorithms would place it on two smaller trays, followed by the yellow and blue parcels. That was major for parcel sorting facilities and distribution centers of big retailers when they were overrun during the holidays. The way parcels were assigned to trays using FIFO logic decreased total throughput by 10%. Recirculating parcels that prevented new parcels from entering the systemīy making smarter decisions and using another induction lane to put packages on these trays, the recirculation could be avoided. This created a bottleneck that should not exist. Recirculating parcels prevented new parcels from entering the system. When the FIFO assignment was used, if the second yellow parcel was placed after the first one going to the same destination, the second parcel was going to recirculate. This could be from one to four trays, depending on the speed of the conveyor and the size of the object that was removed. After one parcel was discharged, some time was required to reset that lane. Moreover, discharges could not happen back-to-back. Additionally, the trays could have different lengths. Without optimization, suboptimal, greedy FIFO assignment used more trays than necessary. The parcel sorting systems were mostly built using the first in, first out (FIFO) logic. In practice, the tilt tray sorters typically had multiple induction areas. Automation Intelligence, together with Noorjax Consulting, worked on improving the parcel sorting systems. Noorjax Consulting is a simulation consulting company that generates feasible solutions for diverse industries. When the parcels reach their destination, trays tilt, and the parcels get ejected.Īutomation Intelligence is a consulting company delivering value-engineered solutions in the areas of automation, machine learning, and artificial intelligence. The parcels get inducted onto trays and move along the conveyor. The automated parcel sorting consists of several processes. Tilt tray sorters are commonly used in automated parcel sorting, distribution, order fulfillment centers, and baggage handling. A tilt tray sorter is a high-speed sortation device that sorts small and medium-sized parcels.
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