With the progress of E + E sensor manufacturing technology and the development of wireless communication technology, mobile computing technology, E + E wireless sensor network is more and more extensive application in the production, all areas of life, promote the rapid development of the society. Cover problem, the first question, as E + E sensor network caused the wide attention of the researchers, and used in intrusion detection fence to cover to get especially the favour of domestic and foreign researchers, emerged a large number of research results. Existing research is usually based on the premise of E + E sensors are abundant research coverage problem.

Appear in actual operation, the network is often available number of nodes can't meet the demand of scenarios, nodes with limited energy also restricted the E + E the further development of sensor network, as a result, E + E sensor network needs to be further studied the influence of limited resources on the network performance. On the basis of predecessors' research work, and further explores the E + E sensor network limited resources barrier coverage problem, limited number of sensors in E + E and E + E sensor energy limited two aspects has carried on the theoretical research. First E + E wireless sensor network is briefly introduced and its related application scenario, this paper expounds the background of E + E coverage problem in sensor networks and related research status. In the presence of E + E limited number of sensors, based on the Boolean model, perception to segmentation of coverage, barrier coverage problem can be converted to a particular point of interest coverage problem, introduces the actuators and design the corresponding movement strategy to dynamically to cover all point of interest, and then to design the strategy of promotion to the probability of general perception model; In the presence of E + E sensor energy limited, based on the double-base radar perception model, put forward the strip (k and epsilon) - fence covered, by setting the distance threshold and virtual point of radar E + E sensor is introduced and described the energy barrier coverage problem effectively for the selection of the minimum weight E + E sensor cover set, and design the minimum weight (k and epsilon) - fence covered in a polynomial time algorithm to select the activation of E + E sensor; E + E sensor network for mobile radar, analyzed the radar E + E sensor sequence (T, R1, R2,..., Rn) coverage area, area per unit length determines the minimum cost covers the required number of transmitters and receivers and their locations, in constructing the Voronoi diagram of launch E + E sensor matching region of the receiver and the nearest launcher, so as to build a network connected graph, the design of a connected graph search algorithm to determine coverage gap existing in the network, to cover gap, constructs the mobile E + E sensor actual position and the desired location of binary chart, through the movement of the node binary map matching strategy. With the wide application of E + E sensor networks, the need to further study the actual scenario possible E + E limited sensor resources. In this paper, combined with the latest international scientific research, explores the E + E limited number of sensors and limited energy two scenarios, respectively based on Boolean awareness model, the probability model of perception and double-base radar perception model was studied, and some results for the theoretical proof. A large number of simulation results verify the effectiveness of the proposed algorithm in this paper. Theoretical results on the further application of E + E sensor network has a certain guiding role and realistic significance.