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US 2025/0076132 A1Published application
Dual-mode coaxial fiber sensor capable of simultaneously measuring temperature and strain, method of manufacturing the same, and measurement system
AssigneeKorea Advanced Institute of Science and Technology
InventorsSeong Su KIM, Won Vin KIM, Seong Yeon PARK, Seung Yoon ON
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Abstract
A dual-mode coaxial fiber sensor has a structure in which a core fiber, a strain sensing layer formed on the core fiber and made of a conductive material, and a temperature sensing layer formed on the surface of the strain sensing layer and made of a conductive material are stacked, thereby simultaneously measuring a temperature and a strain using one sensor.
Claims18
A dual-mode coaxial fiber sensor comprising:
- a core fiber;
- and
- a plurality of coating layers sequentially stacked on the core fiber,
- wherein the plurality of coating layers include:
- a strain sensing layer formed on the core fiber and made of a conductive material;
- and
- a temperature sensing layer formed on the strain sensing layer and made of a conductive material.
4 more elements
A method of manufacturing a dual-mode coaxial fiber sensor, the method comprising:
- preparing a core fiber for a dual-mode coaxial fiber sensor;
- coating the core fiber with a strain sensing layer made of a conductive material;
- coating the strain sensing layer with an elastomer layer;
- removing a portion of a surface of the elastomer layer to form a slit exposing a portion of the strain sensing layer;
- and
- coating the elastomer layer with a temperature sensing layer,
- wherein a junction point is formed between the strain sensing layer and the temperature sensing layer through the slit, and
- a temperature is measured through a thermoelectric voltage measured at the junction point.
5 more elements
A measurement system comprising:
- a dual-mode coaxial fiber sensor in which a core fiber, a strain sensing layer, an elastomer layer, and a temperature sensing layer are sequentially stacked and in which a portion of the surface of the elastomer layer is removed to form a slit exposing a portion of the strain sensing layer;
- a strain measurement unit connected to the strain sensing layer and configured to measure a resistance change according to deformation of the strain sensing layer;
- and
- a temperature measurement unit which is connected to the temperature sensing layer, when a temperature change occurs in the temperature sensing layer, measures a thermoelectric voltage generated at a junction point in the slit between the temperature sensing and the strain sensing layer due to a temperature difference between the temperature sensing layer and the strain sensing layer, and measures a temperature from the thermoelectric voltage.
1 more element
Dependencies are inferred from the claim text.