Estimation of maximum surface temperature of shovel for stationary gas turbines advanced near infrared (with reflection)

摘要

Method for estimating the maximum temperature of a surface of a body located in a surrounding environment, the method comprising: using a radiation sensor to receive heat radiated from the surface; creating from heat radiated received corrected for non-uniformity (NUC) of the surface, the image comprising a plurality of pixels, each pixel having a pixel value image; and transforming each pixel value to a value corresponding estimated temperature using a map reverse calibration temperature of a wavelength band direct wave approximated by a polynomial function of lower order, in which the correspondence of inverse temperature calibration of wavelength band direct wave is based on the value of observed pixels to temperatures known surface and includes a correction radiation from the surrounding environment reflected by the surface so that such radiation does not contribute to the estimated maximum surface temperature based correction on the following model: where e is the radiation received by the radiation sensor, s (l) is the spectral sensitivity of the radiation sensor, and (l) is the spectral emissivity of the surface, B (T, l) is the spectral radiance of Planck's law of the surface, g is a geometric factor comprising the ratio d the area of ​​the surrounding environment which contributes to the radiation received by the radiation sensor T0 relative to the total area of ​​the surrounding environment, and is the average temperature of the surrounding environment.