Browsing by Author "Fazal, Kareemullah Khan"

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    Maximizing Sensor Coverage using Displacement to Remove Overlaps
    (North Dakota State University, 2011) Fazal, Kareemullah Khan
    Sensor networks are wireless networks with small, low-cost sensors which collect and disseminate environmental data. They are used for monitoring and controlling physical environments from remote locations with better accuracy. Sensors have a lot of constraints and challenges. One of the main concerns is the coverage and redistribution of the sensors, without any overlap, in order to achieve maximum coverage with limited usage of energy. The first section of the paper gives a brief overview of the sensors, the sensor network, the various applications where sensors are used, and challenges faced in setting up a sensor network. The next section outlines the problems faced in sensor coverage, followed by a description of the random displacement of the mobile sensors during overlap technique. The following section details the application used to generate the prototype of the sensor network. This section is followed by a visualization section where images of the sensor network are described in detail. The subsequent section provides details about the results of the test cases. The last section of the paper lists the assumptions and constraints that were kept in mind while developing the application, finishing with the conclusion and references. In the prototype of the sensor network, the sensors will be deployed in a given geographical area. The sensor nodes being deployed will be static as well as mobile sensors. The assumption made for this project is that the environment in which the sensors are going to deployed is uncontrolled. The deployed sensors will be searched using a particular procedure to find the overlapping mobile and static sensors. The random displacement technique is used to move the mobile sensor when there is an overlap between two sensors in order to avoid overlapping between the two sensors to enhance the quality of service and to increase the coverage in a given area.