Figure 12From: Energy-efficient border intrusion detection using wireless sensors network−1< Q k ≤0. This case the active sensor is No.1,2,3,5,7,9,10,11,12,13. So the No.3 could replace No.4, No.5 could replace No.6, No.8 could replace No.9 and so on. This means such couples have abundant energy than others. Thus the area they covered has less possibility to be the weak zone.Back to article page