The Research Of Optical Signal Processing Techniques Based On Virtual Instrument

Photoelectric detection technology is an important method to obtain a photoelectricconversion information,fast, high-precision photoelectric detection technology has been oneof the research focus at home and abroad. The purpose of the photoelectric detection isobtained a accurate value of the optical signal, while the photoelectric sensitivity of thephotoelectric converter parts by ambient temperature, noise and other factors, optical signaldetection, ambient temperature changes and noise interference make photoelectric converterperformance changes affected the obtained value of the optical signal is no longer atheoretical value, in the same illumination, the optical data at different temperatures is not thesame. For the above, the optical signal data error correction, in order to achieve a moreaccurate value of the optical signal.Based on the advantages of LabVIEW signal processing, relying on the Functionspalette rich math modules, set up a virtual instrument data acquisition and processing system.In the data acquisition system, application, database access tool based on ADO technologypackage LabSQL LabVIEW and connection to the database, real-time acquisition of opticaldata is saved into a spreadsheet. On the basis of the analysis of the main factors affect theaccuracy of photoelectric conversion and common error compensation method, usingLabVIEW’s powerful graphical programming and data processing functions of the advantagesof error correction processing of optical data collected to provide a viable,accurate and fastoptical information and data error correction method. The method of illumination test dataobject as compensation, and optical data corresponding to different temperatures for the leastsquares fitting operation and precise output of the light intensity value. The results show thatthe light intensity values in the amended can be a good approximation of the ideal lightintensity value, and results were compared by treatment with the commonly used errorcompensation method to verify the feasibility of this approach, the effectiveness of.