CAJ | 학술논문

针对无线传感器网络环境监测应用中的能量受限问题,提出一种基于Bezier曲线的无线传感器网络等值线监测方法--SENS-T.利用等值线来表示环境监测值的分布信息,即将等值线划分为若干Bezier曲线段,每条曲线段的信息由一个代表节点负责传回汇聚中心,汇聚中心再根据网络节点坐标与接收的曲线信息进行等值线还原.汇聚节点的数量由划分的Bezier曲线段的段数决定,从而改良了传统方法中等值线上所有节点都要进行汇聚的做法.仿真表明,SENS-T可有效节省网络能量和带宽,与传统等值线监测方案相比,在达到相同等值线绘制精度的同时,可节省约45%的网络能量.
침대무선전감기망락배경감측응용중적능량수한문제,제출일충기우Bezier곡선적무선전감기망락등치선감측방법--SENS-T.이용등치선래표시배경감측치적분포신식,즉장등치선화분위약간Bezier곡선단,매조곡선단적신식유일개대표절점부책전회회취중심,회취중심재근거망락절점좌표여접수적곡선신식진행등치선환원.회취절점적수량유화분적Bezier곡선단적단수결정,종이개량료전통방법중등치선상소유절점도요진행회취적주법.방진표명,SENS-T가유효절성망락능량화대관,여전통등치선감측방안상비,재체도상동등치선회제정도적동시,가절성약45%적망락능량.
A novel contour mapping scheme based on Bezier curves for wireless sensor networks, SENS-T, is presented to solve the problem of energy limits in using wireless sensor networks to monitor environments. The scheme uses contours to represent the distribution of environment at-tribute value, that is, the contour is divided into pieces of Bezier curves, the shape and the posi-tion information of each Bezier curve is collected to one deputy node and is reported to the sink; and the sink uses the nodes coordinates and the received curve information to rebuild the contour curve. The number of report nodes is determined by the number of Bezier curve segments so that the traditional method that reports the information of all nodes on the contour is reformed. Simu-lation results show that the energy and bandwidth of network are saved efficiently by SENS-T, and a comparison with the traditional method at the same accuracy of counter mapping shows that the SENS-T saves approximately 45% network energy.