Intelligent Multimodal Sensors Integrating Gas, Barometric Pressure, and Temperature Sensing

We present new intelligent multimodal sensors that integrates various sensing and in-memory computing (IMC)-based processing functions. The sensor linearly combines barometric pressure $(P)$ sensing signals using IMC and utilizes temperature $(T)$ sensing signal to provide a reliable $P$. By utilizing multimodal sensing signals and an IMC-based capacitive binarized neural network, the sensor provides highly accurate gas alarms (97.8%) for mixed gases even with varying $T$ and $P$, and variations in sensing signals $(\sigma/\mu=0.1)$.