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Automatic carbon dioxide-methane gas sensor based on the solubility of gases in water.

Cadena-Pereda RO, Rivera-Muñoz EM, Herrera-Ruiz G, Gomez-Melendez DJ, Anaya-Rivera EK - Sensors (Basel) (2012)

Bottom Line: 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 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.

View Article: PubMed Central - PubMed

Affiliation: 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

ABSTRACT
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.

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Block diagram of the carbon dioxide-methane gas sensor with the digital system.
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f1-sensors-12-10742: Block diagram of the carbon dioxide-methane gas sensor with the digital system.

Mentions: The design of the hardware developed is divided into several components: an RS-232 Interface, an Activation State Timer, the Control, proportional integral derivative (PID) Temperature Control, Data Processing, Sampling Time Base, Data Acquisition and Distribution and Polynomial Linearization. A general block diagram of the complete digital system for the automatic carbon dioxide-methane gas sensor is shown in Figure 1.


Automatic carbon dioxide-methane gas sensor based on the solubility of gases in water.

Cadena-Pereda RO, Rivera-Muñoz EM, Herrera-Ruiz G, Gomez-Melendez DJ, Anaya-Rivera EK - Sensors (Basel) (2012)

Block diagram of the carbon dioxide-methane gas sensor with the digital system.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472854&req=5

f1-sensors-12-10742: Block diagram of the carbon dioxide-methane gas sensor with the digital system.
Mentions: The design of the hardware developed is divided into several components: an RS-232 Interface, an Activation State Timer, the Control, proportional integral derivative (PID) Temperature Control, Data Processing, Sampling Time Base, Data Acquisition and Distribution and Polynomial Linearization. A general block diagram of the complete digital system for the automatic carbon dioxide-methane gas sensor is shown in Figure 1.

Bottom Line: 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 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.

View Article: PubMed Central - PubMed

Affiliation: 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

ABSTRACT
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.

Show MeSH
Related in: MedlinePlus