Method and system for multi-functional embedded sensors

Patent metadata

Field	Value
Publication number	US-9482585-B2
Application number	US-201213467139-A
Country	US
Kind code	B2
Filing date	May 9, 2012
Priority date	May 16, 2011
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A system and method for monitoring system including a three dimensional embedded sensor coupled to an article, wherein the three dimensional embedded sensor is a direct write embedded sensor using a high temperature light emitting material. A camera system detects illumination signals from the embedded sensors. A processing section processes the illumination signals and determines gas/surface temperatures and strain data for the article.

First claim

The invention claimed is:

1. A monitoring system comprising:
a light emitting sensor in direct contact with an article;
a high-speed image acquisition system for detecting an optical image of the light emitting sensor; and
a high-speed data processing system for analyzing the image to determine strain of the article,
wherein the light emitting sensor is disposed on a surface of the article in the form of a geometric pattern, wherein the geometric pattern is in the form of a grid, an array of marks, a Moiré pattern, or combinations thereof, and wherein the light emitting sensor comprises features of about 70 microns in diameter and 40 microns in height, and spacing between the features is about 70 microns.

2. A monitoring system according to claim 1 , additionally comprising a pulsed light source for exciting the light emitting sensor.

3. A monitoring system according to claim 2 , wherein the pulsed light source comprises a light emitting diode (LED) array or a laser.

4. A monitoring system according to claim 1 , wherein the light emitting sensor is formed on the article by a direct-write process.

5. A monitoring system according to claim 1 , wherein the light emitting sensor comprises a temperature sensitive light emitting ceramic material.

6. A monitoring system according to claim 5 , wherein the temperature sensitive light emitting ceramic material comprises a rare earth oxide or chromium oxide.

7. A monitoring system according to claim 1 , wherein the light emitting sensor comprises chromium oxide.

8. A monitoring system according to claim 1 , wherein the light emitting sensor comprises alumina doped with chromium.

9. A monitoring system according to claim 1 , wherein the light emitting sensor comprises a rare earth oxide.

Assignees

• Singh Prabhjot
• Wang Guanghua
• Cheverton Mark Allen
• Popielarczyk Jeffrey Joseph
• Shiang Joseph John
• Gen Electric

Inventors

• Singh Prabhjot
• Wang Guanghua
• Cheverton Mark Allen
• Popielarczyk Jeffrey Joseph
• Shiang Joseph John

Classifications

• Y02T50/671

  Cross-Sectional Technologies · mapped topic

• G01D5/34

  the beams of light being detected by photocells · CPC title

• G01K13/02

  for measuring temperature of moving fluids or granular materials capable of flow · CPC title

• Y10T29/49124

  On flat or curved insulated base, e.g., printed circuit, etc. · CPC title

• G01B11/165

  by means of a grating deformed by the object · CPC title