TELKOMNIKA Telecommunication, Computing, Electronics and Control
Determination of optimum load resistances of MQ-series gas sensor circuit for specific gas concentrations
Dublin Core
Title
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Determination of optimum load resistances of MQ-series gas sensor circuit for specific gas concentrations
Determination of optimum load resistances of MQ-series gas sensor circuit for specific gas concentrations
Subject
Liquefied petroleum gas, MQ-6 gas sensor, Sensor circuit sensitivity, Sensor power dissipation,Sensor resistance
Description
MQ-series gas sensors are frequently used in gas concentration sensing
owing to their high sensitivity and relatively cheap cost. Reportedly, both the sensor’s circuit sensitivity (S) and power dissipation (PS ) are functions of sensor circuit load resistance (RL ). However, there is no well-established standard method for determining RL value that can simultaneously yield maximum sensor circuit sensitivity (SM) and acceptable PS for a given value of gas concentration. To obtain optimum RL , the dependence of S and PS on RL for a given gas concentration was thoroughly investigated. The model equations for determining S, PS and RL at SM (RL,MAX) were derived and Q-6 gas sensor’s response to its associated gases was used for demonstrating the proposed method. Variations of both S and PS with respect to RL were investigated when each of the associated gases has concentration of 1000 ppm. The sensor circuit optimal RL must satisfy the dual conditions of (i) S=SM and (ii) PS < set threshold. Results obtained from the analysis revealed that the values of RL,MAX were 20, 24, 64, 120, and 152 kΩ for liquefied petroleum gas (LPG), CH4, H2, alcohol and CO respectively, corresponding to sensor powers of 0.3125, 0.2589, 0.0977, 0.0521, and 0.0411 mW.
owing to their high sensitivity and relatively cheap cost. Reportedly, both the sensor’s circuit sensitivity (S) and power dissipation (PS ) are functions of sensor circuit load resistance (RL ). However, there is no well-established standard method for determining RL value that can simultaneously yield maximum sensor circuit sensitivity (SM) and acceptable PS for a given value of gas concentration. To obtain optimum RL , the dependence of S and PS on RL for a given gas concentration was thoroughly investigated. The model equations for determining S, PS and RL at SM (RL,MAX) were derived and Q-6 gas sensor’s response to its associated gases was used for demonstrating the proposed method. Variations of both S and PS with respect to RL were investigated when each of the associated gases has concentration of 1000 ppm. The sensor circuit optimal RL must satisfy the dual conditions of (i) S=SM and (ii) PS < set threshold. Results obtained from the analysis revealed that the values of RL,MAX were 20, 24, 64, 120, and 152 kΩ for liquefied petroleum gas (LPG), CH4, H2, alcohol and CO respectively, corresponding to sensor powers of 0.3125, 0.2589, 0.0977, 0.0521, and 0.0411 mW.
Creator
Ajiboye Aye Taiwo, Opadiji Jayeola Femi, Ajayi Adebimpe Ruth, Popoola Joshua Olusogo
Source
DOI: 10.12928/TELKOMNIKA.v20i1.21091
Publisher
Universitas Ahmad Dahlan
Date
February 2022
Contributor
Sri Wahyuni
Rights
ISSN: 1693-6930
Relation
http://journal.uad.ac.id/index.php/TELKOMNIKA
Format
PDF
Language
English
Type
Text
Coverage
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Files
Collection
Citation
Ajiboye Aye Taiwo, Opadiji Jayeola Femi, Ajayi Adebimpe Ruth, Popoola Joshua Olusogo, “TELKOMNIKA Telecommunication, Computing, Electronics and Control
Determination of optimum load resistances of MQ-series gas sensor circuit for specific gas concentrations,” Repository Horizon University Indonesia, accessed November 21, 2024, https://repository.horizon.ac.id/items/show/4266.
Determination of optimum load resistances of MQ-series gas sensor circuit for specific gas concentrations,” Repository Horizon University Indonesia, accessed November 21, 2024, https://repository.horizon.ac.id/items/show/4266.