关键词: 无线感知网络 覆盖集 多属性目标 传感器单元

Abstract:

This paper analyses a multi-attribute target coverage problem in sensor networks. Unlike the single target, all the target objects contain multi-attri  bute data in such an area to be detected. To monitor the objects, the sensor node has to set up different types of sensor units. In the application of s  ensor networks, since not only a datum has to be collected in order to completely monitor a target object, the energy-efficient coverage is an important topic. In the paper, the problem is first formalized with an ILP model, and then a distributed algorithm is proposed to obtain the solution. Finally, w  e simulate the approaeh to evaluate its performance. The simulation shows that the distributed algorithm is dose to the solution which directly solves t he ILP in prolonging the network lifetime. Because directly solving the ILP problem needs to rely on a central node, the distributed algorithm is more s  uitable for the wireless sensor networks with limited energy and more nodes.

Key words: （wireless sensor network, coverage set, multi-attribute object, sensor unit）