US 11,691,824 B2
Slip and wrap detection systems for a conveyor belt of an agricultural header
Jeffrey C. Trowbridge, Stevens, PA (US); and Cory Douglas Hunt, Millersville, PA (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Feb. 5, 2020, as Appl. No. 16/782,245.
Prior Publication US 2021/0237982 A1, Aug. 5, 2021
Int. Cl. B65G 43/04 (2006.01); A01D 41/14 (2006.01); A01D 57/20 (2006.01); A01D 61/02 (2006.01); B65G 43/08 (2006.01)
CPC B65G 43/04 (2013.01) [A01D 41/141 (2013.01); A01D 57/20 (2013.01); A01D 61/02 (2013.01); B65G 43/08 (2013.01); B65G 2201/0202 (2013.01); B65G 2203/0291 (2013.01); B65G 2203/044 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A detection system for an agricultural header, the detection system comprising:
a belt comprising at least one physical feature;
a roller configured to drive rotation of the belt, wherein the roller is configured to rotate at a roller rotational speed;
a sensor configured to detect the at least one physical feature as the at least one physical feature passes the sensor during the rotation of the belt, wherein the sensor is positioned relative to the belt and the roller such that the at least one physical feature passes the sensor while the at least one physical feature travels along an outer surface of the roller; and
a controller configured to:
receive a signal from the sensor, wherein the signal comprises a first pulse indicative of a first time at which the at least one physical feature passes the sensor during the rotation of the belt and a second pulse indicative of a second time at which the at least one physical feature passes the sensor during the rotation of the belt;
determine a pulse frequency based on the first time and the second time;
calculate a belt rotational speed based on the pulse frequency;
compare the belt rotational speed to the roller rotational speed; and
provide an output in response to determining that a variation between the belt rotational speed and the roller rotational speed exceeds a threshold.