Design and Implementation of a Dynamic Module and Self-Maintaining Mecahnism in Wireless Sensor Network Operating System

Abstract

The purpose of sensor node is to detect the around environment, and to process the gathered data or deliver the data to data-gathering machine through sensor network. In many applications, sensor nodes are distributed over wide environment. It is very difficult to retrieve them for maintenance or software update when the application of sensor nodes change or system occur unusual behavior. How to make sensor node have the self-maintenance capability is becoming an important issues. Besides, the ability of sensor network OS at present is too simple to deal with new sensor network application in the future. In this paper, we design and implement the first sensor network operating system which has self-maintaining ability. Our system has the following features: light-weight dynamic module mechanism, fault detection, self-recovery and self-update ability. The experiment results show that our system can operate correctly and efficiently.