Cylinder position determination using fiber optic shape sensing

摘要

A system for determining the stroke of a hydraulic cylinder is provided. The hydraulic cylinder includes a barrel with a rod that slidably extends therefrom. A fiber optic shape sensing system is positioned to determine the stroke of the rod relative to the barrel. An interrogation module is fixed to a reference frame. A fiber bundle is joined to the interrogation module at a proximal end and a fiber termination at a distal end, which is joined to the connecting end of the rod. A signal conditioning module connected to the interrogation module is configured to compute the location of at least one position of the fiber bundle relative to the reference frame; and provide an output indicative of the stroke of the connecting end relative to the barrel.

主权项

1. A system for determining the stroke of a hydraulic cylinder comprising:
a hydraulic cylinder comprising:
a rod having a piston end and a connecting end;said rod slidably extending from a barrel, said barrel fixed to a reference frame; a fiber optic shape sensing system associated with the hydraulic cylinder comprising:
an interrogation module fixed to said reference frame;a fiber bundle having a proximal end and a distal end;said proximal end joined to said interrogation module;said distal end having a fiber termination that is joined to said connecting end of said rod;a signal conditioning module connected to said interrogation module and configured to:
compute the location of at least one position of the fiber bundle relative to the reference frame; andprovide an output signal indicative of the stroke of said connecting end relative to said barrel.