Development of Moving Mirror Assembly in the Spectroscopic Sensor for Remote Gas Monitoring

Soil vapour intrusion is now commonly evaluated as part of human health risk assessments at contaminated sites where buildings or other structures are located in close proximity to volatile organic chemicals (VOCs) in subsurface soils and groundwater. Investigation of the vapour intrusion pathway often requires that VOC concentrations in the soil gas adjacent to buildings and structures be characterized as part of the risk assessment process. This paper presents the design of a new soil gas monitoring well and a sampling procedure that effectively eliminate concerns about soil gas sample dilution due to short-circuiting of atmospheric air and help to ensure the collection of representative soil gas samples. The results of a parametric numerical modelling study that was applied to address the air short-circuiting issue and the technical rationale for the new soil gas monitoring well (SGMW) design are presented in this paper along with recommended soil gas sampling procedures in various soil conditions. The SGMW design rationale and methodology outlined in this paper considered the effects of soil moisture content and permeability, the depth to the sampling screen interval, and the soil gas sample extraction rate.

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Mine gas monitoring data analysis

Proceedings of the 2014 15th International Carpathian Control Conference (ICCC) ◽

10.1109/carpathiancc.2014.6843683 ◽

2014 ◽

Cited By ~ 1

Author(s):

V. Vancura ◽

L. Otte ◽

R. Danel ◽

D. Letavkova ◽

Z. Seliga

Keyword(s):

Data Analysis ◽

Monitoring Data ◽

Gas Monitoring ◽

Mine Gas

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Study on Coal Mine Gas Monitoring System Based on Arduino

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.2173 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 2173-2176 ◽

Cited By ~ 1

Author(s):

Hui Chun Gao ◽

Chao Jun Fan ◽

Jun Wen Li ◽

Ming Kun Luo

Keyword(s):

Monitoring System ◽

Coal Mine ◽

Low Cost ◽

Gas Monitoring ◽

Underground Coal Mine ◽

Gas Concentration ◽

Coal Mine Gas ◽

Good Market ◽

Mine Gas ◽

Sd Card

Aimed at the frequency gas accident of coal mine, we designed a coal mine gas monitoring system based on Arduino microcontroller. The MQ-4 gas sensor was used to collect gas concentration, wireless ZigBee was used to transfer data of gas concentration to PC. The system can display gas concentration real-timely by LCD and use SD card to store the data. The system will send out sound and light alarm when the gas concentration overruns. Industrial tests have been carried out in Wuyang coal mine. Results show that gas monitoring system can well adapt to environment of underground coal mine and the measurement is accurate. The system is real-time monitoring and early warning. It has the characteristics of low power consumption, low cost, wireless, good market prospect.

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