Research On The Key Techniques Of Circuitry Design In Uuncooled Thermal Imaging Spectroscopy

We have already got the key technology of visible, shortwave infrared Imagingspectrometers of high-performance multi-spectral, hyperspectral, the Imagingspectrum technology has been quite mature, and the research of long-waveinfrared Fourier transform imaging spectroscopy of high resolution also has beenincluded in the agenda. Carrying out the study of key technologies ofhigh-resolution Fourier transform imaging spectroscopy and addressing theconstraints of high-resolution hyper-spectral imaging technology, such ashigh-performance imaging circuit, reserves the necessary technology of space-suithigh-resolution hyper-spectral imager. Aiming at the long-wave infrared detectorwith large arrays, designed an imaging circuit of the long-wave infrared imagingspectrometer.Summarized the significance of Fourier transform imaging spectroscopy and itsinternational progress, the development of long-wave infrared detectors, the basictheory of infrared radiation and imaging and the composition of the long-waveinfrared imaging spectrometer. Introduced the2nd-generation infrared focal planearray device, summarized the working mechanism and performance of thelong-wave infrared uncooled microbolometer detectors.The core component of the long-wave Fourier transform imaging spectroscopyis ULIS384*288long-wave infrared uncooled detectors.Analyzed the workprocess and input-output characteristics of the microbolometer and the functionmodule of the imaging circuits.Discussed the components used in the powersupply,the detector drive,analog signal amplification and digitalization,temperature control,FPGA,image signal output function modules and its hardwareimplementation in detail. Completed FPGA-based logic design of detector drivingand image processing, and showed the simulation waveform to verify theaccuracy of logic design.Carry out a series experiments about imaging circuit,electronic andphotoelectric system debugging. Analysis of experimental problems and introduceits solutions.Designed imaging circuit is of high reliability and low powerconsumption,obtained image is clear and contrast of the image meets the targetrequirements.