Research On Energy-Based Efficient Query Processing Over Wireless Sensor Networks

Wireless sensor networks integrate sensor technology with embedded computing technology, distributed information processing technology and wireless communication technology. It can collaborate in real-time monitoring, information sensing and monitoring of a variety of environments. Ultimately it transmits the information to the interested users. Sensor networks are widely used in national defense and military, national security, environmental monitoring, traffic management, health care, manufacturing, anti-terrorism disaster and other fields.Data storage and access are important in wireless sensor networks because it is a data-centric network.1) wireless sensor network can be viewed as a distributed database, whose logical view and web view can be separated, users only need to care about the logical structure; 2) there are differences between sensor networks database and traditional distributed database. Energy of sensor nodes are limited, and the number of sensor nodes is large. It is difficult to use database management of traditional distributed database. Some research has been done for data management in wireless sensor network. The main work focused on solving the following appointment:(l)Because of the large data volume, an energy efficient query algorithm based on super sensor node over wireless sensor network is proposed to improve the query efficiency.(2)"Hot point" problem is solved by cooling technology. Nodes with low energy transmit data to other nodes to prevent premature consumption of energy and prolong the life of sensor networks.In this paper, we proposed a series of algorithms to optimize query process. The experimental results show the effectiveness and efficiency of this method; facts proved that the algorithm has theoretical and practical significance.