Unlock instant, AI-driven research and patent intelligence for your innovation.

Object surface temperature measuring method and system combining CCD and thermal infrared imager

An infrared thermal imager, object surface technology, applied in the field of infrared temperature measurement, can solve the problem of low measurement accuracy

Active Publication Date: 2021-09-10
YANSHAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the surface temperature of an object is affected by emissivity in the process of infrared temperature measurement and the measurement accuracy is low, the present invention provides a method and system for measuring the surface temperature of an object that combines a CCD and an infrared thermal imager

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Object surface temperature measuring method and system combining CCD and thermal infrared imager
  • Object surface temperature measuring method and system combining CCD and thermal infrared imager
  • Object surface temperature measuring method and system combining CCD and thermal infrared imager

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] In order to better understand the technical solutions of the present invention, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0075] This application first uses a CCD (Charge-coupled Device,: charge-coupled device) camera, according to the three-primary color temperature measurement method and the principle of double background radiation, under the existing background, use the CCD camera to measure the radiation temperature of the object under test and the reference body respectively , get T respectively r1 and T r3 . To change the ambient radiation, the method is to add a radiation source to project the target, and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an object surface temperature measuring method and system combining a CCD and a thermal infrared imager. The method comprises the steps of S1 determining the value of a correction parameter K in a CCD camera; S2 respectively obtaining average gray values of the single-channel radiation gray-scale maps of the images of a target object and a reference body under a first background and a second background; S3 obtaining a first background target object, a second background target object and a reference body temperature; S4 obtaining the initial emissivity of the target object; and S5 correcting the target temperature to obtain the real surface temperature of the measured object. The system comprises a temperature measuring device, an object heating device and a terminal device; the temperature measuring device comprises a base, an infrared thermal imager and the CCD camera; the heating device comprises a ceramic heating furnace and an external radiation source; and the terminal device is used for receiving the data transmitted by the CDD camera and processing the data. According to the invention, the problems that the temperature measurement process of the thermal infrared imager is influenced by the change of the emissivity of the surface of the object and the CCD temperature measurement result error is too large are solved, and the temperature measurement accuracy is improved.

Description

technical field [0001] The invention relates to the field of infrared temperature measurement, in particular to a method and system for measuring the surface temperature of an object by combining a CCD and an infrared thermal imager. Background technique [0002] In the field of infrared temperature measurement, the measurement of emissivity occupies an important position. It is an important parameter to characterize the thermal radiation ability of the surface of an object. A small change in emissivity can lead to a large measurement temperature error. The emissivity of an object is related to its material, shape, surface roughness, oxidation degree, color, thickness and other factors, and has different values ​​at different temperatures and wavelengths. Therefore, the research status level of emissivity has also become an important symbol of the application and development of infrared radiation technology. With the advancement of science and technology, infrared measureme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01J5/52
CPCG01J2005/0077
Inventor 张玉存刘鑫米松涛付献斌
Owner YANSHAN UNIV