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Material heat conduction analysis device based on fluorescence method

An analysis device and fluorescence method technology, applied in the field of thermal property analysis of materials, can solve problems such as being susceptible to electromagnetic interference and unable to be widely used in industrial measurement fields, and achieve good anti-electromagnetic interference ability, good measurement accuracy, and simple measurement principle Effect

Active Publication Date: 2013-06-05
南京五石金传感技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These measurement methods are susceptible to electromagnetic interference because they use electronic components as temperature sensitive components, so certain protection measures are required. Even if protection measures are taken in design, this type of temperature measurement method is still not suitable for specific complex environments that are easily affected by the outside world. Interference, cannot be widely used in the field of industrial measurement

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  • Material heat conduction analysis device based on fluorescence method
  • Material heat conduction analysis device based on fluorescence method
  • Material heat conduction analysis device based on fluorescence method

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Effect test

Embodiment 1

[0044] An embodiment of the application of the fluorescence method material heat conduction analysis device of the present invention to the measurement of gas thermal diffusivity, refer to Figure 4 , 5 , which works as follows:

[0045] First, the probe 1 is placed in the gas atmosphere 10 to be measured. After the power is turned on, the light source 4 starts to work, and the light source 4 emits excitation light to be transmitted along the optical fiber 2, and then focused to the fluorescent sensing material 9 through the optical lens 8; The sensing material emits corresponding fluorescence after being excited, and the fluorescence is coupled into the photoelectric module through the optical lens along the optical fiber 2, and then the optical detector 5 demodulates the optical signal into an electrical signal. Then the electrical signal enters the signal conditioning and data processing circuit, and the corresponding temperature value is obtained after processing.

[004...

Embodiment 2

[0051] An embodiment of the fluorescence method substance heat conduction analysis device of the present invention can be applied to measure the thermal diffusivity of solid materials, refer to figure 2 , 4 , 6 and 8, the principle of the measurement is: firstly, the measured solid material is pressed Image 6 As shown fixed, the fluorescent sensing material 7 is closely attached to the surface of the solid material 11 to be measured, and then the light source 4 emits a strong laser to heat the area where the fluorescent sensing material 7 is located; after the fluorescent sensing material 7 is heated, the fluorescent sensing The temperature of the part where the material 7 is located rises, and the temperature change process of the fluorescent sensing material 7 can be recorded after the temperature measurement process starts, and the thermal diffusivity of the measured solid material 9 can be obtained after processing and analysis; then only need to know the measured The h...

Embodiment 3

[0053] The present invention can be applied to a kind of embodiment of measuring the thermal diffusivity of liquid sample, refer to figure 2 , 4 , 7 and 8, the principle of its work is: first place the fluorescent sensing material 7 in the liquid sample 10 to be measured, so that the light energy passing through the optical lens 6 is converged on the fluorescent sensing material 7; the purpose of using the optical lens 6 The purpose is to quickly heat the fluorescent sensing material, and at the same time increase the intensity of the fluorescent light entering the optical fiber and improve the signal-to-noise ratio.

[0054] When the light source drive circuit adjusts the light source to output high-energy laser to heat the fluorescent sensing material 7, the system enters the temperature measurement process: the light source 4 continuously sends excitation pulses, and the fluorescent sensing material 7 emits fluorescence after being excited, and the fluorescent light ente...

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Abstract

The invention relates to a material heat conduction analysis device based on a fluorescence method, and belongs to the field of material thermal property analysis. The material heat conduction analysis device comprises a probe (1), a photoelectric module and a data processing module. The probe (1) is used for detecting fluorescence sensing materials (7) on an object to be tested and transmitting detected optical signals to the photoelectric module through optical fibers (2). The photoelectric module coverts the received optical signals into electric signals, and converts the electric signals into temperature signals and then transmits the temperature signals to the data processing module. The data processing module obtains a temperature change curve according to the temperature signals, obtains a thermal diffusion coefficient of the detected object through comparison with standard data, and transmits the thermal diffusion coefficient to an upper computer for heat conduction analysis. The material heat conduction analysis device can be applied to measurement of thermal diffusion coefficients of gas, liquid and solid, is simple in structure, high in flexibility, and has the advantages of being better in measurement accuracy and anti-electromagnetic interference capacity, and achieving functions of miniaturization, intellectualization and online monitoring.

Description

technical field [0001] The invention relates to a material heat conduction analysis device based on a fluorescence method, which can be used to measure the thermal diffusivity of gas, liquid and solid, and further obtain the thermal conductivity of the material, belonging to the field of material thermal property analysis. Background technique [0002] Thermal diffusivity is a very important thermophysical parameter of matter, and thermal diffusivity characterizes the temperature homogenization speed of a material with uneven temperature. Each substance has an intrinsic thermal diffusivity value, and by measuring the thermal diffusivity of the substance, the thermal conductivity properties of the substance can be calculated. [0003] The meaning of thermal conductivity of a substance is the ratio of the heat flow and temperature gradient of a substance per unit area per unit time, which represents a kind of ability of a substance to transfer heat. The one-dimensional Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
Inventor 严跃王大明周宇穆永超吴江冯晶晶瞿帅王泽军
Owner 南京五石金传感技术有限公司
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