| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To manage history data without deficiency and the latest observation data while reducing the power consumption of a sensor node. <P>SOLUTION: In a sensor net system configured of a sensor terminal and a management server, the sensor terminal transmits observation data acquired by using a sensor to the management server, and the management server is provided with a latest data storage management part for managing the latest observation data among the observation data received from the sensor terminal; a history data storage management part for managing the history from the observation data at an arbitrary time received from the sensor terminal to the latest observation data as history data; and a data deficiency management part for managing the deficiency of the history data, and for completing the deficiency of the history data based on a prescribed rule. When receiving the request for observation data, the management server outputs at least either the latest observation data managed by the latest data storage management part or the history data whose deficiency is completed, and managed by the history data storage management part in response to the type of the request. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
