Research On Data Management Over Sensor Network

Studying the technology of processing sensor datas is the important route of effectively using sensor netoworks. This paper analyzes and improves both of the sensor data storage and the query processing method. Finally a Sensor Data Management System is designed.This paper elaborates the concept of the sensor networks, and its main characteristics. After analysis geography route agreement GPSR and data-central storage method, a grographic hash table techonology used geography route agreement GPSR is proposed. Through analyzing the local storage method, external storage method and the data-centric storage, the reason why use data-centric storage method is explained. This paper also proposes a part query processor applied the thchnology of continuously adaptive continuous queries over infinite real-time sensor data streams. The syntax of query languang over sensor datas is proposed. This paper also makes improvement to the PSoup query processing method, and proposes a new query processing mechanism. Finally, this paper compares the sensor data management system with the traditional database system, a Sensor Data Management System is proposed. The function of each module to the sensor network software, including the catalogue of sensor node, mode manager, query processor, storage manager and the network topology manager is discussed. Examples are given to elaborate how the query processing mechanism works and how to query optimizes. The main characteristic of the Sensor Data Management System is described at last.