Thermoreflectance test method and system
A reflection coefficient, photothermal technology, applied in thermometers, measuring devices, measuring heat and other directions, can solve the problem of difficulty in ensuring the measurement effect of different materials, and achieve the goal of being suitable for large-scale promotion and use, improving accuracy and temperature measurement efficiency, The effect of improving accuracy
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Embodiment 1
[0039] The photothermal reflection temperature measurement method in this embodiment is described in detail as follows:
[0040] The light and heat reflectance coefficient C of the area to be tested TR calibration;
[0041] Modulate the outgoing light of light sources with different wavelengths, and project the modulated outgoing light to the area to be tested;
[0042] Receive the reflected light of the area to be tested, and demodulate the reflected light to obtain reflected light signals of different wavelengths;
[0043] Calculate the reflected light signals of different wavelengths to obtain temperature test information.
[0044] The photothermal reflection temperature measurement method of this embodiment uses multi-wavelength probe light to simultaneously measure the temperature of the area to be measured including a variety of different materials, and select C according to the characteristics of different materials. TR The largest wavelength is used for temperature ...
Embodiment 2
[0059] see figure 1 , the photothermal reflection temperature measurement method in the present embodiment is described in detail as follows:
[0060] S101: Measure the light and heat reflection coefficient C of the area to be measured TR calibration;
[0061] S102: By controlling the excitation signal of the light source, the sinusoidal amplitude modulation of the outgoing light of two light sources with different wavelengths is realized, and the modulated outgoing light is projected to the area to be measured;
[0062] S103: Receive the reflected light of the area to be measured, convert the optical signal of the reflected light into a digital signal, and demodulate it through a coherent demodulation method to obtain digital signals of reflected light of different wavelengths;
[0063] S104: Calculate the digital signals of reflected light with different wavelengths to obtain temperature test information.
[0064] Preferably, see figure 2 , step S101 includes:
[0065]...
Embodiment 3
[0073] see image 3 , the photothermal reflection temperature measurement method in the present embodiment is described in detail as follows:
[0074] S201: Measure the light and heat reflection coefficient C of the area to be measured TR calibration;
[0075] S202: By controlling the external modulator of the light source, switching and modulating the outgoing light of two light sources with different wavelengths is realized, and projecting the modulated outgoing light beam to the area to be measured;
[0076] S203: Receive reflected light of different wavelengths in the area to be measured through a synchronization mechanism, and convert the reflected light into a digital signal of reflected light through a low-pass filter and an A / D converter;
[0077] S204: Calculate the digital signals of reflected light with different wavelengths to obtain temperature test information.
[0078] Preferably, see Figure 4 , step S201 includes:
[0079] S2011: Under the same conditions...
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