المؤلفون: Cadena-Pereda RO; Laboratorio de Biotrónica, Departamento de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas S/N, Querétaro 76010, Mexico. omar.cadena@upq.edu.mx, Rivera-Muñoz EM, Herrera-Ruiz G, Gomez-Melendez DJ, Anaya-Rivera EK

المصدر: Sensors (Basel, Switzerland) [Sensors (Basel)] 2012; Vol. 12 (8), pp. 10742-58. Date of Electronic Publication: 2012 Aug 06.

نوع المنشور: Journal Article

بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101204366 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1424-8220 (Electronic) Linking ISSN: 14248220 NLM ISO Abbreviation: Sensors (Basel) Subsets: MEDLINE

مواضيع طبية MeSH: Carbon Dioxide/*analysis , Chemistry Techniques, Analytical/*instrumentation , Chemistry Techniques, Analytical/*methods , Methane/*analysis , Signal Processing, Computer-Assisted/*instrumentation , Water/*chemistry, Algorithms ; Biofuels/analysis ; Equipment Design ; Solubility

مستخلص: Biogas methane content is a relevant variable in anaerobic digestion processing where knowledge of process kinetics or an early indicator of digester failure is needed. The contribution of this work is the development of a novel, simple and low cost automatic carbon dioxide-methane gas sensor based on the solubility of gases in water as the precursor of a sensor for biogas quality monitoring. The device described in this work was used for determining the composition of binary mixtures, such as carbon dioxide-methane, in the range of 0-100%. The design and implementation of a digital signal processor and control system into a low-cost Field Programmable Gate Array (FPGA) platform has permitted the successful application of data acquisition, data distribution and digital data processing, making the construction of a standalone carbon dioxide-methane gas sensor possible.