The reconstruction of three-dimensional temperature field is a difficult problem. But three-dimensional temperature measurement can be simplified by the reconstruction of the flow cross-section temperature. In this paper, a theory of reconstruction is proposed and a simulation test system is implemented by MATLAB based on emission spectra tomography (EST) and radiation temperature measurement, which also take the emission and absorption characteristics in the processing of radiative transfer under consideration. Finally, by analyzing the difference of the original temperature and reconstructed temperature we can get the accuracy of the reconstruction theory.
This paper introduces the design of a DSP-based video image acquisition and real-time processing system. In this paper, as the main embedded processor TMS320DM642 build real-time edge detection hardware platform. TVP5150PBS video decoder is adopted to acquire video signal and data stream ,and CPLD device is configured for system logic Control, achieve real-time video image acquisition and processing. Experiments show that the system can effectively carry out edge detection, to meet the real-time. The research is supported by the Key Laboratory of Nondestructive Test Ministry of Education. The author appreciates the state natural science fund(60577016), Aero-Science fund (2009ZD56008) and province fund (2009GZW00251).
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