High level modeling and simulation of a sensor system for vapor trace detection of Explosives

In this work we describe a high-level Matlab model of a sensor system for vapor trace detection of different molecules in the air using an array of differently functionalised capacitive sensors and an extremely sensitive electronic detection system. The model includes the adsorption/desorption process of differently modified sensors in response to different molecules in the air around the sensors, together with high level model of a low noise analog and digital signal processing electronics. The proposed model makes it possible to study the interactions, selectivity, and sensitivity of the sensor system in an efficient way, and forms the basis for the efficient design of modules of the sensor system for vapor trace detection of different molecules in the air.