Development of wireless sensor network for museum environmental monitoring

Wireless Sensor Network (WSN) has been adopted in many contests, such as healthcare or industrial. In museum scenario, WSN has been introduced for environmental monitoring, to control temperature and relative humidity. Nowadays, the development of low-cost micro-scale sensing units, opened to new possibilities for WSN development, including other environmental measurements of interest, such as: gaseous pollutant, relative humidity, temperature, light intensity, air flow, vibration. The present work is part of the overarching goal of the development of a low-cost and minimally invasive WSN designed for a museum scenario. The here proposed WSN node, based on a ZigBee-IEEE802.15.4 standard, gathers signals provided by: a 9-axis MIMU, a sensor for temperature and relative humidity, and a lux-meter. In this paper, we present performances of the WSN node in detecting structure tilt that can be due to structure deformations and/or seismic vibrations.