3 results about "Monochromatic radiation" patented technology

The invention discloses a section temperature and non-gray absorption coefficient reconstruction method based on multi-camera spectral imaging. The method comprises the following steps: measuring flame monochromatic radiation intensity under multiple wavelengths by using multiple multi-spectral cameras; setting an initial absorption coefficient, and calculating a DRESOR coefficient matrix under each wavelength through a DRESOR method; the DRESOR coefficient matrix and a modified Tikhonov regularization method are combined to solve medium radiation source item distribution, an absorption coefficient is updated through a Newton iteration method, and medium radiation source item distribution under multiple wavelengths is output; simultaneously reconstructing temperature and absorption coefficient distribution from a radiation source item by using an L-M polynomial fitting method; and if the relative error minimization condition is met or the maximum number of iterations is reached, outputting a final flame section temperature and non-ash absorption coefficient distribution result. By means of the scheme, high-precision flame section temperature and absorption coefficient distribution can be obtained based on multispectral image information, the result is reliable, and precision is high.

The facility for detecting at least one characteristic parameter of a medium (M), has A DEVICE (3) illuminating the medium (M) with a visible polychromatic light, a device (4) exciting the medium (M) with a visible-light or infrared monochromatic radiation, a first device (5) collecting and conveying at least a first electromagnetic radiation emitted by the medium (M), a second device (6) collecting and conveying at least a second electromagnetic radiation emitted by the medium (M), at least one visible-band spectrometer (7) obtaining at least one visible-band spectrum of the medium (M) from the at least first electromagnetic radiation, at least one Raman spectrometer (8) obtaining at least one Raman spectrum of the medium (M) from the at least second electromagnetic radiation, and a device (9) detecting the at least one characteristic parameter from the at least one visible-band spectrum and the at least one Raman spectrum.

This invention relates to the field of gas radiation calculation technology, providing a method and system for calculating gas radiation during methanol-coal blending. The method involves obtaining the monochromatic radiation absorption coefficients of each radiating gas component under basic operating parameters during the blending process, then using Planck's law to calculate the total emissivity of the mixed gas under different basic operating parameters during blending, establishing a benchmark database of gas radiation characteristics in methanol-coal blending; fitting the parameters of the mixed gas emissivity calculation model using the benchmark database; and calculating the gas radiation characteristics under any methanol-coal blending condition using a mixed gas emissivity calculation model with defined parameters, based on actual combustion conditions. This improves the accuracy of gas radiation characteristic calculation during blending and provides reliable theoretical support for the optimized design, operating parameter control, and energy saving and carbon reduction of methanol-coal blending systems.