Accurate and rapid detection of harmful gas concentrations is crucial in industrial production, environmental monitoring, and urban infrastructure maintenance. Traditional gas detectiontechnologyLimited accuracy、Poor anti-interference ability, frequent calibration required, and other issues，Difficult to meet the precise monitoring needs in complex environments. In order to address this issue, the Resilient City Limited Space team conducted extensive selection testing and ultimately selected a microelectromechanical system based solution（MEMS）Gas sensitive sensors for technology.

MEMSThe core of gas sensors lies in miniaturizing, integrating, and intelligentizing traditional gas detection modules. Its core structure is composed of micrometer level semiconductor gas sensitive materials, which undergo selective adsorption reactions with target gas molecules through nanometer level sensitive membranes. When specific gases such as methane and hydrogen sulfide come into contact with the surface of the sensor, they can cause significant changes in the material's electrical conductivity. This change in microscopic physical properties is converted into quantifiable electrical signals through high-precision circuits.

Unlike traditional sensors that rely solely on a single detection threshold,MEMSSensors integrate multidimensional data parsing capabilities. Its built-in intelligent algorithm continuously learns gases from the feature database through continuous learning“fingerprint”Information that can distinguish the difference between the target gas and other interfering components in real time. This identification mode based on big data training enables sensors to autonomously eliminate cross interference, fundamentally solving the problem of traditional equipment being easily affected by environmental gases.

MEMSThe micro nano structure design of the sensor exponentially increases the surface area of its sensitive unit, enabling detection of as low asppmChanges in gas concentration at the level of one millionth. Shorten the response time from perception to output results to seconds, truly achieving gas leakage“Second level warning”.In addition,sensorstill able toBy analyzing multidimensional characteristic parameters such as gas adsorption kinetics, temperature and humidity compensation, and concentration gradient changes, interference gases such as carbon dioxide and volatile organic compounds are automatically identified and filtered to ensure the detection of key indicators such as methane and hydrogen sulfideaccuracy.

In today's accelerated urbanization process, this innovative achievement that integrates microelectronics technology, materials science, and artificial intelligence provides key technological support for building resilient cities. With the continuous optimization of feature databases and algorithm iterations, this“A thoughtful electronic nose”We will protect the security line of more hidden corners.