Chip-level design for intelligent human position detection based on PIR sensor

Abstract

Purpose This study aims to present a novel technique to localize the human position in a room, to manage people in a specified space. Design/methodology/approach In this study, a real-time human sensing detection and smart lighting control was designed within a single silicon core. The chip has been successfully realized within 1.5 mm2 silicon area using TSMC 0.25 um process. Findings This chip can read the weak signal of pyroelectric infrared (PIR) sensor to find the position of human body in a dark room and then help control the smart lighting system for an intelligent surveillance system. Originality/value This chip presented the retriggering delay control to expand the LED lighting time infinitely to avoid lighting-off suddenly while users stay on a space. This function is very useful in a practical intelligent surveillance system that is mainly based on human detection to better reduce power dissipation and memory space.