CAJ | 학술논문

提出一种逆向捕获时间差的声源定位协议，可以使传感器网络在大部分时间里处于射频体眠状态，因此具有显著的节能效果；在利用时间差数据求解声源位置时，引入Voronoi图理论对搜索空间进行裁剪，以提高算法搜索求解的效率和成功率。理论分析和实验结果表明该声源定位机制具有明显的能量有效性、定位解算的精确性、快速收敛性和顽健性，适用于能量受限无线传感器网络中动态声源的实时精确定位。
제출일충역향포획시간차적성원정위협의，가이사전감기망락재대부분시간리처우사빈체면상태，인차구유현저적절능효과；재이용시간차수거구해성원위치시，인입Voronoi도이론대수색공간진행재전，이제고산법수색구해적효솔화성공솔。이론분석화실험결과표명해성원정위궤제구유명현적능량유효성、정위해산적정학성、쾌속수렴성화완건성，괄용우능량수한무선전감기망락중동태성원적실시정학정위。
An acoustic source localization protocol based on counter captured time difference was presented. It can drive the sensors in network to "sleep" in most of the time, so as to achieve energy saving obviously. In the stage of computing the acoustic source position with the time difference data, Voronoi diagram was introduced to reduce the searching space to improve the success percentage and convergence speed of the algorithm. Both the theoretical analysis and experiment results demonstrate that this acoustic localization mechanism is energy efficient, in real-time and robust in localization comnutine. So it is suitable for dynamic acoustic source accurate localization in WSNs.