Design of fire detection system in buildings based on wireless multimedia sensor networks

Wireless multimedia sensor networks constitute a powerful technology particularly suitable for environmental monitoring. With regard of fire detection and prevention in buildings, fire images acquired by WMSNs provide visual information of fire, which contributes to a more accurate recognition. This paper presents a design scheme of early fire detection system in buildings based on WMSNs. We adopt the traditional fire detection sensors together with the CMOS image sensors, and process those data at the acquisition side, using DSP chips, instead of at the monitoring side, in which way less data need to be transferred through the wireless network. Thus, it makes a more reasonable and energy saving fire detection system. The traditional fire detection method used is to implement basic detection of suspicious fire area and a fire image detection method, based on the static image features and the dynamic image features of fire, is applied in the system to enhance detection precision.