The design of rapid prediction system on coal sae m gas content
LIU Yong-tao
LIU Jia
MA Shang-quan
DI Wei
Abstract：In this paper ,coal seam gas content forecast needs to test and analyse the gas content of the coal sample.Gas desorption rate of coal sample gradually reduced with time extension ,so we need to use a very low pressure loss of the gas flow sensor for testing.In order to adapt to the demand ,the instrument design uses micro electro mechanical system ( MEMS) flow sensor FS4001 , to realize the collection of gas flow through the mixed signal processor 12 bit A/D conversion.According to coal sample gas desorption power function relation-ship between the rate changing over time ,automatic matching is deduced under the natural state sample total coal desorption of gas.This instrument has realized the data acquisition , storage of more groups , curve dis-play, time setting, desorption rate total logic deduction , the loss in fitting and so on in the field of micro gas measurement with its good application prospect.
Keywords：MEMSflow sensorcurve fittingleast square method
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 5-8 )