[C3] A Self-powered Wireless Video Sensor Node for Moving Object Surveillance

Abstract

This paper presents a self-powered wireless video sensor node with an energy-harvesting CMOS sensor array and a low-overhead image processor for moving object detection. The CMOS sensor captures an image in a block-wise manner to reduce the latency and area/energy overhead, and harvests energy during its idle period. The image processor incorporates a simple moving object detection algorithm, which significantly reduces transmission energy while ensuring a reliable delivery of information. The results indicate that the energy harvested by the CMOS sensor can self-power the system at a low frame rate.