A method of determining the location of a heat source located inside an object
A technique of heat sources, objects, used in radiation pyrometry, thermometers, measuring devices, etc. using electrical/magnetic elements directly sensitive to heat
Active Publication Date: 2017-07-21
COMAC +1
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However, the above-mentioned prior art cannot yet be explained by Fourier's law (heat conduction) and Stephen-Boltzmann's law (heat radiation)
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[0042] Obtain the actual temperature field distribution on the surface of the object
[0043] Use non-contact methods such as three-dimensional far-infrared thermal imaging cameras or contact methods such as high-resolution thermocouple arrays to obtain the actual temperature field distribution on the surface of the object. Xiao et al. disclosed a three-dimensional far-infrared imaging method in "Optical Engineering" Volume 42, Issue 4, which can obtain real-time temperature field information on the surface of the measured object in a non-contact manner. Giansanti D et al. disclosed a thermocouple array in "Medical Engineering & Physics" Volume 30, No. 1, which can obtain real-time information on the surface temperature field of the measured object by contact. The entire contents of the above documents are hereby incorporated by reference.
[0044] Correct the influence of the external environment on the temperature field distribution of the surface of the object
[0045] Th...
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The invention belongs to the non-destructive temperature measurement technology and relates to a method for determining the position of a heat source inside an object. The method for determining the position of the heat source inside the object includes: (a) measuring the actual temperature corresponding to the point coordinates on the object surface to obtain the actual temperature field distribution; (b) correcting the actual temperature field distribution to obtain the point coordinates on the object surface The corresponding ideal temperature Ti is to eliminate the influence of the environment on the temperature field distribution on the surface of the object; (c) the data is fitted to the corresponding isothermal circle curve corresponding to the intersection of the isothermal sphere with the temperature Ti and the surface of the object, so as to obtain the isothermal circle curve Radius di; (d) Calculate the radius Ri of the corresponding isothermal sphere according to the radius di of the isothermal curve; (e) Obtain the coordinates of the heat source according to the point coordinates on multiple isothermal curves and the radius Ri of the corresponding isothermal sphere. The invention can easily measure the actual position and temperature of the spherical heat source.
Description
technical field [0001] The invention belongs to the non-destructive temperature measurement technology, and relates to a method for determining the position of a heat source inside an object, which is applied to the acquisition of the temperature and position of a single-point or single-spherical heat source inside a homogeneous object. Background technique [0002] When any object is above absolute zero (-273°C or 0K), the surface of the object will generate infrared radiation to the outside world. In indoor environments, the science of heat transfer is based on the basic methods of heat transfer and the first law of thermodynamics. The former consists of Fourier's law (heat conduction) and Stefan-Boltzmann's law (heat radiation), and the latter is also called the law of conservation of energy. [0003] U.S. Patent 6,023,637 proposes a method for non-destructive temperature measurement of the internal heat source of an object, that is, assuming that the medium between the ...
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IPC IPC(8): G01B21/00G01J5/00G01K7/02
Inventor 程胜
Owner COMAC