AN IMPROVEMENT IN COVERAGE BY SENSORS WITH ADJUSTABLE SENSING RANGES USING DISTRIBUTED GREEDY VERTEX BASED ALGORITHM
Anitha.G 1, Subramanian.K 2
1 PG student, Department of ECE, National Engineering College, Kovilpatti, Tamil Nadu, India.
2 Assistant Professor (SG), Department of ECE, National Engineering College, Kovilpatti, Tamil Nadu, .India.
A fundamental challenge in designing wireless sensor network is to enhance the network lifetime by changing the direction of the sensor. The connectivity and coverage constraints are problems in maximizing network lifetime in Wireless Sensor Networks. The effective sensing range of sensors is characterized by directionality and sensing angle. In proposed work, the range has been adjusted in order to reduce the overlapped coverage. The sensor field is divided into voronoi cells by calculation of sensor. The direction of the sensor is based on the largest vertex distance. Thus the sensor covers more area. The sensor calculates its respective intra-cell coverage sizes of aligning direction with each vertex and selects the vertex having the maximum coverage as its preliminary working direction. This improves the overall intercell coverage ratio in the sensor network environment. Then the range has been adjusted in order to reduce the overlapped coverage. The parameter such as distance of the largest vertex and the maximum area coverage of voronoi cell has been analyzed with the help of matlab and the simulation performance of method was compared. It shows that there is improvement in the adjustable range coverage of the proposed method.
