Evaluation of Graphical User-Interfaces for Order Picking Using Head-Mounted Displays

摘要

Order picking is the process of collecting items from an assortment in inventory. It represents one of the main activities performed in warehouses and accounts for about 60% of the total operational costs of a warehouse. In previous work, we demonstrated the advantages of a head-mounted display (HMD) based picking chart over a traditional text-based pick list, a paper-based graphical pick chart, and a mobile pick-by-voice system. Here we perform two user studies that, suggest that adding color cues and context sensing via a laser rangefmder improves picking accuracy with the HMD system. We also examine other variants of the pick chart, such as adding symbols, textual identifiers, images, and descriptions and their effect on accuracy, speed, and subjective usability.