An Intelligent General-Purpose Circuit and System for Broad Sensor Array-Based Applications

Here, we present a general-purpose sensor array-based circuit and system design. Firstly, to reduce power consumption and suppress noises, we introduce strategies including multiple bias voltages, low-power self-wake-up mechanism, average-lag filtering and data packetization mechanisms. Then, we implement hardware-friendly algorithms: 1) for the novel strain sensor array, KNN algorithm affiliated with the threshold discrimination mechanism successfully recognizes ten kinds of gestures for deaf and mute person with an accuracy of 99.8%; 2) for the MEMS gas sensor array, combined with the adaptive mean-baseline calibration algorithm, we successfully compensate common problems of the drift.