The research of sensor node power management

Wireless sensor networks consist of small sensor nodes and are able to sense the environment in a distributed fashion. And embedded system is a kind of special computer system which is suitable for application system with strict requirements on the functionality, cost, size and power consumption. Hence the application of embedded systems will become increasingly important. Also the amount of data to be dealt with in the embedded system will continue to increase, so database processing technology is needed to the embedded system. In other words we need embedded database to manage large amount of data. In this paper, we present effective management method of sensor nodes are installed in various locations to collect environmental information. This method can monitor whether sensor node passes wrong environmental information or sensor node to lack of battery power. On this basis, we design sensor node power management system based on embedded system and use SQLite as database.