Title :
Research on Fitting the Second-harmonic Spectrum of the Coal Mine Gas with Multiple Regression Method
Author :
Mengran, Zhou ; Zhenbi, Li ; Zongjiu, Zhu
Author_Institution :
Anhui Univ. of Sci. & Technol., Anhui
Abstract :
It uses the tunable diode laser absorption spectrum method in the coal mine gas detection which is not only the high precision and the strong selectivity but also the quickly response. The results of experiment indicate that the second-harmonic signal of methane with different density use multiple regression processing and fitting to obtain the density value. It shows that along with the decrease of the density the correlation coefficient reduces more and more, and the lower limit value of density detected is 0.087 mg/m3. As the high sensitivity of the experiment installation it can realize in coal mine that continuous monitoring online and remote sensing.
Keywords :
coal; gas sensors; organic compounds; remote sensing; coal mine gas; continuous online monitoring; gas detection; laser absorption spectrum; methane; multiple regression; remote sensing; second-harmonic spectrum; tunable diode; Absorption; Chemical lasers; Density measurement; Gas lasers; Instruments; Optical sensors; Product safety; Production; Tunable circuits and devices; Wavelength measurement; The coal mine gas; data fitting; multiple-regression; second-harmonic; spectral absorption;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350421
