Evaluating MQ Sensors in Gas Leakage Detection Systems

Gas leakage detection systems are crucial for ensuring safety and preventing accidents in both domestic and industrial environments. The effectiveness of these systems largely depend on the performance of the gas sensors used, which are responsible for detecting gas concentrations. This review evaluates the various MQ sensors employed in gas leakage detection systems, focusing on their capabilities, limitations, and applications. The survey shows that while MQ2 and MQ5 sensors are versatile for domestic environments, MQ4 and MQ6 sensors are more specialized for methane and LPG detection. Also, MQ9 provides high-resolution detection of carbon monoxide and methane, whereas MQ135 is optimal for broader air quality monitoring. By analyzing these MQ series sensors, we have provided insights into their suitability for various gas detection needs and highlighted the potential areas for future research and development.