Research On Reconstruction System Of Temperature Field Based On DSP And ARM Infrared Optical Fiber Bundle Tomography

Based on the principle of infrared temperature measurement and EmissionSpectral Tomography, Infrared Optical Fiber Bundle Tomography were exploredand used for temperature field reconstruction in this paper. The combination of theprinciple of infrared temperature measurement and Emission Spectral Tomographyis used to measure the temperature and reconstruct temperature field. EmissionSpectroscopy Tomography (Emission Spectral Tomography, referred EST) is themeasurement technique that is non-interference and broken the measured fielddistribution. And the measurement technique includes the radiation measurementtechniques and Optical Computed Tomography (OpCT). There is a variety of thereceiving mode of receiving radiation rays in the EST. The inversion precision ofEST based on parallel beam is the highest. Infrared optical fiber bundle is used as away of data acquisition for getting the ideal parallel beam. So the Emission SpectralTomography of receive data that used infrared optical fiber bundles is calledInfrared Optical Fiber Bundle Tomography (IOFBT).In this paper, the planar array of infrared optical fiber bundle, the DSPacquisition system and ARM temperature field reconstruction system are designedto explore the Infrared Optical Fiber Bundle Tomography. In the design of DSPacquisition system, digital signal processor (DSP) selects TMS320F28335,andTMS320F28335is mainly responsible for control of64roads infrared fibercollecting radiation information and then the collected radiation information data aretransfer ed to ARM S3C6410., these data is used for temperature field reconstructionon the S3C6410development board. And the temperature field reconstruction data issent to the PC’s display system. The study of DSP-ARM temperature fieldreconstruction system mainly includes hardware design and software design.Hardware design includes the planar array of infrared optical fiber bundle, weaksignal processing, TMS320F28335’s data acquisition system, ARM S3C6410reconstruction systems and the temperature calibration system of infrared optical fiber bundle. Software part mainly includes data acquisition program, the dataexchange program of DSP and ARM, and ARM reconstruction algorithm program.Based on infrared optical fiber bundle tomography, DSP-ARM temperature fieldreconstruction system is studied in this paper. The system has powerful dataprocessing capabilities, real-time reconstruction of three-dimensional temperaturefield. And the system that has the capability of data acquisition and control canaccurately control the64roads infrared optical fiber signals and collect the data ofinfrared optical fiber signals. In this paper, temperature calibration experiment wascarried out for the system through low temperature blackbody furnace. Theexperimental results show that infrared optical fiber bundle tomography is feasible,and that the precision of the temperature field reconstruction is improved. Meanwhilethe entire DSP-ARM temperature field reconstruction system is controlled by ARM,almost out of control of the PC.