Sensor for measuring large mechanical strains in shear or lateral translation
First Claim
1. A capacitive strain sensor for sensing strain of a structure, the sensor comprising:
- a first section attached to the structure at a first location, the first section comprising a capacitor plate electrically isolated from the structure, wherein the first section is a core having an outer diameter, and wherein the capacitor plate is mounted to the core;
a second section attached to the structure at a second location, the second section comprising two electrically isolated capacitive plates, both of the plates being electrically isolated from the structure, wherein the second section is a ring having an inner diameter greater than the outer diameter of the core and the two electrically isolated capacitive plates are mounted to the ring; and
a component configured to flexibly connect the first section to the second section,wherein the capacitor plate of the first section is separated from the two capacitive plates of the second section by at least one capacitive gap, and wherein the first section is axially movable relative to the second section.
4 Assignments
0 Petitions
Accused Products
Abstract
A capacitive strain sensor for sensing strain of a structure. The sensor includes a first section attached to the structure at a first location and a second section attached to the structure at a second location. The first section includes a capacitor plate electrically isolated from the structure and the second section includes two electrically isolated capacitive plates, both of the plates being electrically isolated from the structure. A flexible connector connects the first section to the second section. The capacitor plate of the first section is separated from the two capacitive plates of the second section by at least one capacitive gap. When strain is experienced by the structure, a change occurs in the capacitive gap due to relative motion between the first and second sections. The first section includes a core and the second section includes a ring that receives the core.
64 Citations
20 Claims
-
1. A capacitive strain sensor for sensing strain of a structure, the sensor comprising:
-
a first section attached to the structure at a first location, the first section comprising a capacitor plate electrically isolated from the structure, wherein the first section is a core having an outer diameter, and wherein the capacitor plate is mounted to the core; a second section attached to the structure at a second location, the second section comprising two electrically isolated capacitive plates, both of the plates being electrically isolated from the structure, wherein the second section is a ring having an inner diameter greater than the outer diameter of the core and the two electrically isolated capacitive plates are mounted to the ring; and a component configured to flexibly connect the first section to the second section, wherein the capacitor plate of the first section is separated from the two capacitive plates of the second section by at least one capacitive gap, and wherein the first section is axially movable relative to the second section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A landing gear assembly comprising:
-
a strut piston; a torque linkage; and a capacitive strain sensor for sensing strain of at least one of the strut piston or the torque linkage, the sensor comprising; a first section attached to the at least one of the strut piston or the torque linkage at a first location, the first section comprising a capacitor plate electrically isolated from the at least one of the strut piston or the torque linkage, wherein the first section is a core having an outer diameter, and wherein the capacitor plate is mounted to the core; a second section attached to the at least one of the strut piston or the torque linkage at a second location, the second section comprising two electrically isolated capacitive plates, both of the plates being electrically isolated from the at least one of the strut piston or the torque linkage, wherein the second section is a ring having an inner diameter greater than the outer diameter of the core and the two electrically isolated capacitive plates are mounted to the ring; and a component configured to flexibly connect the first section to the second section, wherein the first section is axially movable relative to the second section, and wherein the capacitor plate of the first section is separated from the two capacitive plates of the second section by at least one capacitive gap. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification