Table 3.

Comparison of the three nodes.

Node Name	Control Rules	Description	Hardware
Node 1	Works continually without any control.	Has a constant sampling interval of 30 s and communicating interval of 5 min.	All nodes have hardware similar to those mentioned.
Node 2	Makes the communication device sleep after a certain period to approximately suit the electric quantity of the battery.	Has a constant sampling interval and communicating interval same as those of Node 1. However, the communicating device enters a dormancy state for 0.5 h after working continually for 2 h.
Node 3	Uses the approach proposed in this paper.	Self-configures the sampling interval and communicating interval or enters a dormancy state with the decision of the reasoning engine, which considers four rules mentioned in Section 3.3.