On-line software solution for power consumption monitoring on WSN nodes

Energy consumption is a critical issue in wireless sensors. In this paper we describe a method used for power consumption monitoring, on each WSN node, during network employment. It provides the actual power consumption to be utilized by the applications running on sensor nodes, the time when switched to actual consumption profile and also the overall current consumption since the node is in service. These results can be integrated with a battery model for the on-line determination of the energy available in batteries at a node level. Contributions of this paper are related to the dynamic consumption profiles which are linked not only to the states of the sensor modules but rather to the presence of relevant factors for power consumption.