Industrial roll with triggering system for sensors for operational parameters

摘要

A method of determining a rotative position of an industrial roll includes: (a) providing a rotating industrial roll having a longitudinal axis, the industrial roll having mounted on one end thereof an accelerometer, the industrial roll further including a plurality of sensors; (b) determining a pre-trigger angular position of the roll based on a first gravity vector provided by the accelerometer; then (c) determining a trigger angular position of the roll based on a second gravity vector provided by the accelerometer, the magnitude of the second gravity vector differing from the magnitude of the first gravity vector by more than the magnitude of a typical noise signal; and (d) gathering data from the sensors after the roll has passed the trigger angular position; and (e) matching the data gathered in step (d) with a respective sensor of the plurality of sensors based on the determination of the trigger angular position.

主权项

1. A method of determining a rotative position of an industrial roll, comprising the steps of:
(a) providing a rotating industrial roll having a longitudinal axis, the industrial roll having mounted on one end thereof an accelerometer; (b) detecting a gravity vector generated in the accelerometer; (c) comparing a magnitude and direction of the gravity vector detected in step (b) to a predetermined pre-trigger gravity vector; (d) if an absolute value of the gravity vector detected in (b) has not reached an absolute value of the pre-trigger gravity vector, repeating steps (b) and (c); otherwise, proceeding to step (e); (e) detecting the gravity vector generated in the accelerometer; (f) comparing the magnitude and direction of the gravity vector detected in (e) to a predetermined trigger gravity vector, the absolute value of the magnitude of the trigger gravity vector differing from the absolute value of the magnitude of the pre-trigger gravity vector by an amount greater than a typical noise signal generated by the accelerometer; (g) if the absolute value of the magnitude of the gravity vector detected in step (f) reaches the absolute value of the magnitude of the trigger gravity vector, repeating steps (e) and (f); otherwise, proceeding to step (h); and (h) determining the rotative position of the roll based on the gravity vector detected in step (e).