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The paper describes the hardware and software implementation of combustible gas detection and alarm equiped STC12C5410AD microcontroller and catalytic combustion sensor. The select catalytic combustion sensor and design of high-precision differential amplifier circuit can meet the requirements of industrial and mining for combustible gas detection at room temperature. The measurement accuracy can...
In order to predict the spontaneous combustion in Donghuantuo coal mine exactly, the concentration of CO, C2H4 and C2H6 changed disciplinarily with the temperature by the analysis of oxygenation under low temperature in experiment were described. According to the rules of selecting the identification gases, the gases and the data of oxygenation under low temperature were analyzed. The results show...
The ability to identify, via remote sensing, the identity of materials prior to self-ignition is important for fire safety. We have developed a system to monitor, in real time, the thermal and chemical properties of specific materials under well controlled heating conditions. Our goal is to develop a library of the pre-combustion ??signature?? of materials commonly present in buildings. These signatures...
A real-time electronic nose system is designed to analyze methane (CH4), hydrogen (H2) and their mixtures, the main combustible gases in the environment. The system is based on a single chip for acquiring measurement data from a gas sensor array. Four Fe2O3 gas sensors with little humidity effect are employed in the gas sensor array. A principal component regression (PCR) method is applied to process...
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