[PDF] Top 20 The coverage problem in a wireless sensor network

... of the fundamental issues in sensor networks is the coverage problem, which reflects how well a sensor network is monitored or tracked by ...sensors. ... See full document

... define a new k-angle object coverage problem in a wireless sensor ...Each sensor can only cover a limited angle and range, but can freely rotate to any ... See full document

... analyze the event detection latency. Specifically, we are given a sensing field, on which there are n homogeneous ...Each sensor has a sensing distance of ...form a connected ... See full document

... 法，節點 A 會用廣播的方式寄出封包給感測 範圍內的其他節點，在工作中的節點收到封 包，回應 Reply 封包，代表此感測範圍已經 有節點在工作，節點 A 就會進入到休眠的狀 態，每隔一段時間節點 A 甦醒會在廣播出封 包來確認感測範圍中是否有工作的節點，當 沒有工作的節點回應的時候，節點 A 就會進 入到工作的狀態，進行感測任務直到節點死 亡。PEAS ... See full document

... on the first page or initial screen of a display along with the full ...work in other works requires prior specific permission and/or a ... See full document

... Introduction Wireless sensor networks are composed of a large number of tiny sensor nodes, which consist of sensing, data processing, storage capacity, limited memory, and communicating ... See full document

... model, wireless sensor network, optimum number of ...(wireless sensor network, WSN) 是由多個具有通訊能力的無線 感測器 (sensor node, SN) 所組成的。一個SN是 一種具備偵測、感應與傳輸能力的電子裝置。隨 ... See full document

... for the considered WMN, subject to the user throughput requirement. In the ring-based WMN, a simple ring-based frequency planning scheme has been employed to reduce collisions, and to ... See full document

... Abstract In this paper, we investigate the network expanded prob- lem which optimally assigns new adding and splitting cells in PCS (Personal Communication Service) network to switches ... See full document

... the network routing. The data is formed and aggregated by many sensor nodes and transmitted to sink by way of wireless transmission or to base station by way of ...These sensor ... See full document

... outlining the contaminated region of the diffusing poisonous gas (due to BIS feature), then sense and warn any entrant to leave away from this ...challenges in maintaining MBC for dynamic objects. ... See full document

... to the BMD problem. In real environments, signal strengths may be influenced by many factors, such as hardware difference, remaining battery, multipath propagation, and dynamic signal ...determine ... See full document

... to the design of power-saving mechanisms such that the total power consumption in a WSNET is minimized and the network lifetime is ...maximized. In this paper, the ... See full document

... ONCLUSION In this paper, we studied the multi-hop clustering problem for a given wireless sensor network, which is defined as d- MCHS ...presented a distributed, ... See full document

... First, the centralized heuristic clusters event locations, from a global view, when there are fewer mobile sensors, while the distributed heuristic always clusters event locations into fixed ... See full document

... The problem if formulated as ...deployed in F. Deployment of S is assumed to be dense enough so that the low-tier network is always ...thus the high-tier network could be ... See full document

... to a variety of causes, including the following: the routing path might experience a break; the WSN sensing area might experience a leak; the batteries of some ... See full document

... 2.1. Wireless-Sensor-Network-Based Sensor The self-developed WSN-based ISN operates according to the ZigBee protocol and contains a tri- axial accelerometer as well as ... See full document

... However, the in-network processing characteristic of sensor networks has posed new challenges to this ...issue. In this paper, we develop several tree structures for in- ... See full document

... of wireless communication and embedded microsensing MEMS technologies has made wireless sensor networks ...possible. In light of storage in sensors, a sensor ... See full document