Methods and Computer Program Products for Detecting Fallen Containers

摘要

Methods, systems, computer program products, apparatus and circuits are configured to detect fallen containers upstream or proximate an intake zone suitable for automated evaluation apparatus using different sensors, including at least one lower sensor and at least one upper sensor which is positioned to project an optical signal at a height corresponding to a top portion of an upright container to thereby allow an increased reliability in detection of different orientations and positions of fallen containers. An optional second lower sensor may be used which is longitudinally spaced apart from the first lower sensor and the lower sensors can transmit optical signals across the container travel path that do not intersect.

主权项

1. A method of controlling loading systems having a conveyor that merges into a rotating wheel, comprising:
transmitting at least one lower optical signal across a travel path of elongated containers at a height that is below a medial portion of upright container, the at least one lower optical signal including a first optical signal that projects across a receiving pocket of a rotating wheel at a load position, the wheel having a plurality of circumferentially spaced apart receiving pockets, each pocket configured to receive one upright container at the load position; concurrently transmitting at least one upper optical signal at a height that is above the at least one lower optical signal, the at least one upper optical signal configured to cross a cap portion of an upright container in the receiving pocket at the load position; electronically detecting fallen containers or blockages proximate and in a receiving pocket of the wheel at the load position based on data associated with the optical signals; automatically controlling a drive system associated with the wheel so that the wheel does not rotate if a fallen container is detected in the pocket of the wheel at the load position; and reversing or stopping the conveyor if a bridge of abutting containers is detected proximate the wheel based on data associated with at least one of the optical signals.