[1]College of Computer Science and Engineering,Northwest Normal University, Lanzhou 730070, China;
[2]Gansu Province Internet of Things Engineering Research Center,Lanzhou 730070, China;
[1]College of Computer Science and Engineering,Northwest Normal University, Lanzhou 730070, China;
[1]College of Computer Science and Engineering,Northwest Normal University, Lanzhou 730070, China;
[2]Gansu Province Internet of Things Engineering Research Center,Lanzhou 730070, China;
[3]College of Educational Technology, Northwest Normal University,Lanzhou 730070, China;
Wireless Sensor Network (WSN); Voronoi diagram; Hybrid node; Barrier coverage; Reference Barrier Lines (RBL); The least square method;