Analysis of embedded gas detection system based on nano-porphyrin arrays |
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| Authors: | LUO Xiao gang BAI Xing hong HOU Chang jun HUO Dan qun FA Huan bao and YANG Mei |
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| Institution: | Key Laboratory of Biological Evolution Science and Technology, Ministry of Education,Chongqing University, Chongqing 400044, P. R. China;Key Laboratory of Biological Evolution Science and Technology, Ministry of Education,Chongqing University, Chongqing 400044, P. R. China;College of Bioengineering,Chongqing University, Chongqing 400044, P. R. China;College of Bioengineering,Chongqing University, Chongqing 400044, P. R. China;College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China;College of Bioengineering,Chongqing University, Chongqing 400044, P. R. China |
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| Abstract: | In view of the necessity of gas detection in environment, an embedded gas detection system is designed based on the basic principles of chromatography change of chemical reaction between nano-porphyrin arrays and micro-gas, which takes ARM9 S3C2440A as the core and nano-porphyrin array as the sensors. The overall program, the circuit organization and control software of the main function module such as spectrum signal acquisition, processing and monitoring are presented. With energy conservation differential equation, the control model of temperature and flow rate in the sample chamber is established, which can precisely control the detection conditions of chemical sensors. Some typical trace gases such as ammonia, enanthaldehyde, cyclohexane and hexanal are tested by the system, and the results show that the system can achieve rapid and accurate detection of trace volatile gas. |
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| Keywords: | nanometer porphyrin array trace ARM9 |
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