Anti-dither optical container sensor

Details Anti-dither optical container sensor Anti-dither optical container sensor

B - Operations, Transporting

65

B

B65B 65/08 (2006.01) B65B 57/04 (2006.01) G06M 1/10 (2006.01) G06M 7/02 (2006.01)

Patent

CA 2178047

Apparatus for detecting containers of predetermined diameter that includes a pair of optical proximity sensors positioned adjacent to a container conveyor such that light energy from the sensors is incident sequentially on the containers as the containers pass on the conveyor adjacent to the sensors. The sensors are adjustably positionable with respect to each other such that the sensors are spaced from each other in the direction of container motion on the conveyor. An electronic circuit is coupled to the sensors for detecting passage of containers on the conveyor while ignoring dithering of the containers. In the preferred embodiment of the invention, the sensors are mounted on a common support having a scale for measuring separation between the sensors. Printed indicia in units of container diameter, preferably in both English and metric units, is affixed to the support adjacent to the scale. One of the sensors is mounted on the support adjacent to a "zero" reference point on the scale indicia, and the other sensor is adjustably positionable on the support adjacent to the scale. The support in the preferred embodiment of the invention takes the form of a housing enclosing the sensors and having an elongated window parallel to the conveyor through which containers on the conveyor are exposed to the sensors.

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