A temperature measurement method based on dual-frequency magnetic field magnetic nanomagnetization

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 of a dual-frequency magnetic field. Background technique [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 into the living body in large quantities; t...

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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 into the living body in large quantities; there are non-contact temperature measurement methods using infrared rays or ultrasonic waves as the medium, but the infrared method can only measure the temperature on the surface of the living body, and cannot obtain the temperature in the living body. Ultrasonic The method is not mature enough, and the measurement results cannot meet the accuracy requirements; nuclear magnetic resonance technology is relatively mature, and it can also be used to measure temperature in principle, but it needs to select a temperature reference point, and then obtain the actual temperature through the temperature difference, resulting in Measurement accuracy is relatively low

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