SYSTEM OF SENSOR NETWORK, SENSOR NODE AND THE CONTROLLING METHOD THEREOF

摘要

PURPOSE: A sensor network system, a sensor node, and a control method thereof are provided to improve transmitting and receiving efficiency with a sync node. CONSTITUTION: A plurality of sensor nodes(200) collects status information of an adjoining region. A plurality of sensor nodes transmits the collected state information through first frequency. One or more sink node(100) receives the state information transmitted through the first frequency. A first sync node transmits the state information to an external manager of a sensor network through the first frequency and the second frequency.