Mobile wireless sensor system for tracking and environmental supervision

In this paper a system level analysis and implementation of two-layer mobile wireless sensor network architecture is proposed for tracking and environmental supervision applications. It uses a mobile Master Sensor Node (MSN) that collects information inside a Sensor Area Network (SAN) where many semi-passive Slave Sensor Nodes (SSN) are deployed. The collected information is sent through a Wireless Wide Area Network (WWAN) infrastructure to a central server via TCP/UDP. The communication interface between the user and the MSN is established through out mobile communication services or internet mail services. The communication between the MSN and the SSN is through asymmetric-link Radio Frequency Identification (RFID) based architecture. An MSN prototype has been implemented and tested under real conditions for environmental supervision during the perishable goods transportation.