| 摘要 |
PURPOSE: A USN(Ubiquitous Sensor Network) system for managing heterogeneous devices is provided to store and manage each sensor information in an integrated sensor information database, thereby saving installation fees. CONSTITUTION: A plurality of gateways(121-123) receives sensor information from sensor nodes. The gateways transmit the received sensor information to an upper layer. A plurality of middlewares(141-143) receives the sensor information from the gateways. The middlewares transmit the received sensor information to an upper layer. An integrated middleware(150) receives and organizes the sensor information from the middlewares. The integrated middleware stores the organized sensor information into the integrated sensor information database. [Reference numerals] (130) Communication network; (141) First middleware; (142) Second middleware; (143) Third middleware
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