2results about How to "High temperature measurement sensitivity" patented technology

This invention discloses a downconversion fluorescence thermometry method based on bilinear mode, implemented using a hardware system. The hardware system includes a 280nm light-emitting diode, two convex lenses, and a Tb... 3+ :Cs2Na 0.9 Ag 0.1 The system comprises InCl6 temperature-sensing material, a grating spectrometer, an oscilloscope, a signal generator, a computer, and a thermostat. The specific implementation steps are: signal excitation and acquisition; temperature calibration; actual temperature measurement; and high measurement accuracy: VPR mode linear correlation coefficient R² ≥ 0.998, FL mode linear correlation coefficient R² ≥ 0.992, avoiding measurement errors introduced by the exponential bias or correction term of traditional FIR technology, thus fundamentally improving temperature measurement accuracy.

The invention belongs to the technical field of fluorescent materials, and discloses fluorescent powder as well as a preparation method and application thereof. The chemical formula of the fluorescent powder is Ba < 2.92 > Mg < 0.08 > BP3O12: 12% Eu < 2 + > / Eu < 3 + >. The fluorescent powder not only can be applied to the field of optical temperature measurement, but also can be applied to the field of white light LED illumination. When being applied to optical temperature measurement, the optical temperature sensor has the advantages of quick effect, high resolution, high sensitivity, high temperature resistance, no need of direct contact with an object and the like, and can still ensure high discrimination degree of signals while performing high-sensitivity test. The fluorescent powder can be used as a white light LED device after being mixed with commercial fluorescent powder, white light emitted by the prepared LED device is high in color rendering index and high in luminous efficiency, and the light color does not change along with the change of current and temperature and is stable.