Differential motion sensor

摘要

A differential motion sensor includes a base and a cradle. The base includes a first surface that extends along a first axis to define a length and a second axis to define a width. The base further includes at least one hinge that pivots about a rotational axis extending along the first axis. The cradle is pivotably coupled to the at least one hinge and is configured to move in the direction of the second axis when pivoting about the hinge. The differential motion sensor is configured to operate in a first mode when the cradle is aligned with the base and a second mode when the cradle is pivotably displaced with respect to the base.

主权项

1. A differential motion sensor configured to detect a shear force applied to an aircraft, comprising:
a base including a first surface extending along a first axis to define a length and a second axis to define a width, and including at least one hinge that pivots about a rotational axis extending along the first axis; a cradle pivotably coupled to the at least one hinge and configured to move in a direction of the second axis when pivoting about the hinge; and at least one conductive fuse extending along a third axis that is perpendicular to both the first axis and the second axis, the at least one conductive fuse including first and second fuse portions connected to one another at a fracture region; wherein the fracture region extends along the second axis such that the first and second fuse portions are configured to sever at the fracture region when a shear force applied to the differential motion sensor along the second axis exceeds a force threshold of the at least one conductive fuse, and wherein the differential motion sensor is configured to operate in a first mode when the cradle is aligned with the base and a second mode when the cradle is pivotably displaced with respect to the base, a first conductive terminal connected to the first fuse portion and a second conductive terminal connected to the second fuse portion, the first and second conductive terminals configured to deliver electrical current through the at least one conductive fuse, wherein the differential motion sensor is configured to operate in a first mode in response to the current flowing through the at least one conductive fuse and a second mode in response to fracturing the at least one conductive fuse at the fracture region such that the current does not flow through the at least one conductive fuse.