WANG Yu-tian, WANG Yan-ting. Research on fluorescence fiber gas sensor based on LabVIEW[J]. 2009, 28(4): 21-22+26. DOI: 10.13873/j.1000-97872009.04.036.
A testing system for the concentration of sulfur dioxide for atmosphere contamination based on virtual instrument technology and UV fluorimetry is described.The analog signals which reflect the sulfur dioxide volume fraction is detected by the double optical path detecting system.Through the USB—6009 data acquisition card and single channel data acquisition VI
and powerful data processing function of LabVIEW
a sulfur dioxide volume fraction testing system based on virtual instrument technology is achieved.The research on the gases of various volume fraction is carried out which are obtained through the match gas system designed by ourselves
and liner fitting of the obtained data is made through making use of Liner Fit.vi.The feasibility of the system is proved after calculation with the largest linear deviation of 1.35%
which is in the required error range.The experiment testifies its feasibility.