title: Exploitation of Ubiquitous Wi-Fi Devices as Building Blocks for Improvised Motion Detection Systems.
abstract: This article deals with a feasibility study on the detection of human movements in indoor scenarios based on radio signal strength variations. The sensing principle exploits the fact that the human body interacts with wireless signals, introducing variations of the radiowave fields due to shadowing and multipath phenomena. As a result, human motion can be inferred from fluctuations of radiowave power collected by a receiving terminal. In this paper, we investigate the potentialities of widely available wireless communication devices in order to develop an improvised motion detection system (IMDS). Experimental tests are performed in an indoor environment by using a smartphone as a Wi-Fi access point and a laptop with dedicated software as a receiver. Simple detection strategies tailored for real-time operation are implemented to process the received signal strength measurements. The achieved results confirm the potentialities of the simple system here proposed to reliably detect human motion in operational conditions.
authors.affiliation: Institute for Electromagnetic Sensing of the Environment, National Research Council, Via Diocleziano 328, Napoli 80124, Italy. soldovieri.f@irea.cnr.it.
authors.forename: Francesco
authors.initials: F
authors.lastname: Soldovieri
authors.affiliation: Institute for Electromagnetic Sensing of the Environment, National Research Council, Via Diocleziano 328, Napoli 80124, Italy. gennarelli.g@irea.cnr.it.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Gennarelli
mesh_terms: D004574:Electromagnetic Fields; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation / Q000379:methods*; D009068:Movement / Q000502:physiology*; D011846:Radio Waves; D012984:Software; D059015:Wireless Technology / Q000295:instrumentation*
keywords: improvised motion detection system; wireless signals