Logistics system

A logistics system, comprising a processor coupled to a non-transitory memory storing instructions for executing:

• a control unit configured to execute an arrival time estimation process for calculating estimated arrival time of transport vehicles toward a logistics center, an estimated arrival time correction process for calculating a corrected estimated arrival time of each transport vehicle toward the logistics center, and an item assortment plan making process for making an item assortment plan;
• an actual arrival time acquisition section configured to acquire a time when each transport vehicle has arrived at the logistics center as an actual arrival time of each transport vehicle;
• a storage section;
• a conveying device controller;
• and
• a conveying device,
• wherein said arrival time estimation process includes a process for calculating said estimated arrival time based on a variation of location information of each transport vehicle over time, a time when a distance between the logistics center and each transport vehicle becomes shorter than a predetermined distance, and said predetermined distance,
• wherein said estimated arrival time correction process includes a process for calculating said corrected estimated arrival time based on said estimated arrival time and actual difference information,
• wherein said item assortment plan making process includes a process for making said item assortment plan based on said corrected estimated arrival time,
• wherein said control unit is further configured to calculate an estimated arrival time of a first transport vehicle by executing said arrival time estimation process,
• wherein said storage section is further configured to store said actual difference information calculated based on a difference between said estimated arrival time of said first transport vehicle and an actual arrival time of said first transport vehicle acquired by said actual arrival time acquisition section,
• wherein said control unit is further configured to calculate an estimated arrival time of a second transport vehicle by executing said arrival time estimation process,
• wherein said control unit is further configured to calculate a corrected estimated arrival time of said second transport vehicle by executing said estimated arrival time correction process,
• wherein said control unit is further configured to make an assortment plan corresponding to said second transport vehicle by executing said item assortment plan making process,
• wherein said control unit is further configured to transmit, to said conveying device controller, instructions for instructing item assortment work to collect a plurality of items to be loaded in the transport vehicle currently traveling toward the logistics center based on the item assortment plan,
• wherein said conveying device controller is configured to transmit, to the conveying device, operation commands for conveying the plurality of items based on the instructions, and
• wherein the conveying device comprises a picking conveyor that conveys the plurality of items toward a picking work area, the picking conveyor receiving the operation commands from said conveying device controller for said conveying the plurality of items.