METHOD OF AND SYSTEM FOR DETECTING OBJECT WEIGHING INTERFERENCES

摘要

A POS-based checkout/scale system having (i) a bar code symbol reading subsystem for reading bar code symbols on products being purchased at a retail POS station, and (ii) a produce weigh scale having a weigh scale assembly for weighing one or more produce items on a weigh platter during produce weighing operations carried out at the time of checkout at said retail POS station. The system also includes an automatic produce weighing interference detection subsystem, supporting an IR-based light curtain about the weigh platter, automatically detects when any object is overhanging the weigh platter during produce weighing operations, and generates an alert signal when such conditions are automatically detected.

主权项

1. A system, comprising:
a housing having a horizontal scanning window; a symbol reading subsystem for producing data for objects passed over the horizontal scanning window and processing the data in an effort to read symbols on objects; a weigh scale subsystem comprising a weigh platter above the horizontal scanning window, the weigh scale subsystem for weighing objects placed on the weigh platter and producing weigh data representative of the weight of objects weighed on the weigh platter; and a weighing interference detection subsystem for projecting a pair of IR-based object detection planes about the outer edges of the weigh platter to detect weighing interference conditions and generating control signals indicative of detected weighing interference conditions.