A universal multi-source fusion acceleration sensor for vibration monitoring in irregular space

Acceleration sensors capable of human physiological information and unmanned equipment operating state evaluating have significant applications in advanced sensing and intelligent control. Especially, achieving self-powered sensing of various vibration information in irregular space is still a challenge. Herein, a multi-source fusion self-powered acceleration sensor integrated two triboelectric sensing modules and two electromagnetic sensing modules is successfully proposed via heterogeneous integration strategy and micro-capacitor model, which realizes the high-accuracy and high-reliability vibration acceleration monitoring. In addition, the flexible symmetric structure imparts the device with conformal property, broadening its application scenarios. Combined with customed four-channel acquisition storage circuit and linear fitting algorithm of multi-source sensory data, the developed acceleration sensor has excellent practicality to accurately sense and predict various acceleration states with accuracy of 96%. This capability of the sensing system underscores the practical utility of human sole and unmanned aerial vehicle wing to evaluate physiological and operating state, which addresses the critical acceleration sensory challenges in irregular space by providing a sensitive, reliable and conformal sensing strategy.