Stress measurement device, stress measurement system, and stress measurement method

Patent metadata

Field	Value
Publication number	US-11761833-B2
Application number	US-202017085403-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Apr 26, 2017
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A stress measurement device includes a first obtaining unit obtaining thermal data including information indicating a temperature of a measuring region, a second obtaining unit obtaining data related to stress occurring in one part of the measuring region, and a controller finding stress occurring in the measuring region from the thermal data and the data related to the stress. The controller finds, first waveform data respectively on the one part and a part other than the one part based on a change with time of the thermal data, and second waveform data based on a change with time of the data related to the stress. The controller finds, disturbance data through a deduction of the second waveform data from the first waveform data on the one part, and stress data indicating stress occurring in the part through a deduction the disturbance data from the first waveform data on the part.

First claim

What is claimed is:

1. A stress data outputting method executed by at least one processor, the stress data outputting method comprising:
outputting a stress data indicating pressure occurring in a target area of a region that is different from a predetermined area of the region based on:
a first thermal data indicating temperature obtained from the target area, and
a relational data generated by a relation between
(1) a second thermal data indicating temperature obtained from the predetermined area of the region, and
(2) a measured stress data measured in the predetermined area of the region,

wherein the relational data is synchronized timewise with the first thermal data, and
wherein the predetermined area is a location within and is smaller than the target area.

2. The stress data outputting method according to claim 1 , wherein the relational data is generated based on a difference between the second thermal data and the measured stress data.

3. The stress data outputting method according to claim 1 , wherein the relational data expresses a disturbance of the predetermined area of the region.

4. The stress data outputting method according to claim 1 , wherein the second thermal data and the measured stress data are obtained chronologically.

5. The stress data outputting method according to claim 1 , wherein the stress data is a stress waveform indicating the pressure occurring in the target area.

6. A stress data outputting method executed by at least one processor, the stress data outputting method comprising:
obtaining, from an infrared camera, a first thermal data from a target area of a region;
obtaining, from the infrared camera, a second thermal data from a predetermined area of the region, the predetermined area being different from the target area;
measuring, by a laser displacement meter, a stress data in the predetermined area of the region;
generating a relational data generated by a relation between the second thermal data, and the measured stress data, the relational data being synchronized timewise with the first thermal data; and
outputting a target stress data occurring in the target area based on the first thermal data and the relational data.

7. The stress data outputting method according to claim 6 , wherein the relational data is generated based on a difference between the second thermal data and the measured stress data.

8. The stress data outputting method according to claim 6 , wherein the relational data expresses a disturbance of the predetermined area of the region.

9. The stress data outputting method according to claim 6 , wherein the second thermal data and the measured stress data are obtained chronologically.

10. The stress data outputting method according to claim 6 , wherein the predetermined area is a location within and is smaller than the target area.

11. The stress data outputting method according to claim 6 , wherein
the first thermal data indicates temperature obtained from the target area,
the second thermal data indicates temperature obtained from the predetermined area, and
the target stress data is a stress waveform indicating pressure occurring in the target area.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Irie Yousuke

Classifications

• H04N23/11

  for generating image signals from visible and infrared light wavelengths · CPC title

• G01M5/0008 Primary

  of bridges · CPC title

• G01L1/248 Primary

  using infrared (G01L1/241, G01L1/242 take precedence) · CPC title

• G01N25/20

  by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity (calorimeters per se G01K) · CPC title

• G01N25/72

  Investigating presence of flaws · CPC title