Temperature measuring method based on dual frequency magnetic field nanometer magnetization intensity

A magnetization and temperature measurement technology, applied in diagnostic recording/measurement, medical science, diagnosis, etc., can solve the problems of inability to obtain temperature in the living body, mediocre measurement results, and low measurement accuracy

Active Publication Date: 2015-08-26
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0002] Temperature is a sign of life activities. In medical treatment, many diseases can be cured by changing the temperature. However, various life activities are going on in the human body or living body anytime and anywhere. It is very difficult to accurately measure and control the temperature.
The traditional temperature measurement technology in the living body has a contact temperature measurement method with a thermocouple or a thermal resistance as the medium. The measurement results of this method are average, and it needs to be implanted in multiple places for accurate measurement, but this is beneficial to the living body. Trauma, for the sake of safety, it cannot be implanted int...

Method used

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  • Temperature measuring method based on dual frequency magnetic field nanometer magnetization intensity
  • Temperature measuring method based on dual frequency magnetic field nanometer magnetization intensity
  • Temperature measuring method based on dual frequency magnetic field nanometer magnetization intensity

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[0081] 1. Simulation model and simulation experiment

[0082] In order to study the effectiveness and superiority of the temperature measurement method based on the dual-frequency magnetic field magnetic nanoparticle magnetic field intensity, this example is simulated under the condition of noise. The dual-frequency single-frequency simulation model is m=n=5, and the column vector formed by the amplitudes of the odd harmonics of frequency a X = A 1 A 3 A 5 A 7 A 9 , Temperature dependent column vector Y = N T N T 3 N T 5 N T 7 N T 9 , Coefficient matrix A = Ms 2 H 0 3 K - Ms 4 H 0 3 20 K 3 5 M s 6 H 0 5 378 K 5 - 7 Ms 8 H 0 7 1728 K 7 7 M s 10 H 0 9 5280 K 9 0 Ms ...

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Abstract

The invention discloses a temperature measuring method based on the dual frequency magnetic field nanometer magnetization intensity, which belongs to the technical field of nanometer measurement, wherein a magnetic nanometer sample is placed on an object to be measured; dual frequency stimulation magnetic field is applied to the area wherein the magnetic nanometer sample is placed; magnetization strength signals of the magnetic nanometer sample stimulated by the dual frequency stimulation magnetic field are collected; every harmonic wave amplitude value is extracted from the signals; and finally, an equation set is established according to the relationship of the harmonic wave and the temperature. According to the invention, the temperature of an object can be measured rapidly and accurately; and the temperature measurement method is especially suitable for non-contact temperature measurement.

Description

Technical field [0001] The invention relates to the technical field of nanometer testing, in particular to a temperature measurement method based on the magnetic nanometer magnetization intensity of a dual-frequency magnetic field. Background technique [0002] Temperature is a sign of life activity. In medical treatment, many diseases can be cured by changing the temperature. However, the human body or living body is undergoing various life activities anytime and anywhere. It is very difficult to accurately measure and control temperature. . The traditional measurement technology of the temperature in the living body is a contact temperature measurement method with a thermocouple or a thermal resistance as the medium. The measurement result of this method is general. For accurate measurement, it needs to be implanted in multiple places, but this is a problem for the living body. Wounds cannot be implanted in a large amount of life for safety; there are non-contact temperature m...

Claims

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Application Information

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IPC IPC(8): A61B5/01
CPCA61B5/01A61B5/7203A61B5/7257
Inventor 魏凯刘文中杜中州黄志兴
Owner HUAZHONG UNIV OF SCI & TECH
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