Description: 利用GPRS网络传输基于Zigbee无线传感器汇节点数据的完整无线网络设计，网络采用星型或MESH网状网络拓扑和需求时唤醒Zigbee模块的通信方式，有效降低了每个Zigbee传感器节点的功耗，减少了传感器节点向汇节点上报数据时相互碰撞的概率，并利用GPRS网络传输汇节点的数据，改变了传统无线传感器网络需要依托有线公共网络进行数据传输的限制，使网络具有非常显著的优点。-Use of GPRS network Zigbee-based wireless sensor nodes exchange data integrity of wireless network design, network using star-shaped or MESH mesh network topology and demand Zigbee module wake-up means of communication, effectively reducing each Zigbee sensor node power consumption, reduce a sensor node to the Department to report data each node the probability of collisions and to make use of GPRS network nodes exchange data, has changed the traditional wireless sensor networks need to rely on the wired public networks for data transmission restrictions, to the network has very significant advantages. Platform: |
Size: 288768 |
Author:罗朝辉 |
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Description: Abstract
This paper talk about the communication protocol named LEACH. The protocol focuses on reducing the power consumption of wireless sensor networks, which can have significant impact on the overall energy dissipation of these networks. LEACH uses localized
coordination to enable scalability and obustness for dynamic networks, and incorporate data fusion into the routing protocol to reduce the amount of information that must be transmitted to the base station. Simulations show that LEACH can achieve as much as a factor of 8 reductions in energy dissipation compared with conventional routing protocols. In addition, LEACH is able to distribute energy dissipation evenly throughout
the sensors, doubling the useful system lifetime for the networks we simulated. Platform: |
Size: 707584 |
Author:Amir |
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Description: Power consumption is an important design criterion in
the design of wireless sensor networks. Hybrid radio
frequency/free space optical wireless sensor networks (RF/FSO
WSN) have been proposed to reduce the energy consumption of
traditional RF-based sensor networks. This paper compares the
performance of such a hybrid sensor network against the wellknown
RF-based low energy adapting clustering hierarchy
(LEACH) WSN proposed in the literature. Network performance
is studied in terms of network lifetime and average network area
coverage. Simulations show that despite not employing data
aggregation, the RF/FSO WSN has a longer lifetime and larger
average network coverage when compared to the LEACH WSN Platform: |
Size: 631808 |
Author:serag |
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Description: Wireless sensor networks with mobile sink are ex-pected to increase the flexibility for gathering information in large-scale sensing and detecting environments. Energy saving becomes one of the most important features of the sensor nodes to extend their lifetime in such networks. A novel tree-based power saving scheme is proposed in this paper to reduce the energy consumption in wireless sensor networks with mobile sink. We adopt a dynamic sorting algorithm to create a tree-cluster routing structure for the sensor nodes. The main goal of this scheme is to reduce the data transmission distances of the sensor nodes by employing the tree structure and multi-hop concepts. Based on the location of mobile sink, the distances between the sensor nodes, and the residual energy of each sensor node, the proposed scheme makes an efficient decision for creating the routing structure. The energy consumption is reduced and the lifetime is extended for the sensor nodes by balancing the network load. Platform: |
Size: 1226752 |
Author:wadgiad |
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Description: that monitor certain conditions in different locations and transfer data
through a network to an endpoint called base station. Because WSN nodes are
often deployed outdoors where a direct power outlet may not be available, energy
efficiency becomes a key factor in the design of WSNs. This work proposes an
antenna transmission power optimisation algorithm (TPOA) which dynamically
adjusts the power level of the transmission according to the last received signal
strength indicator (RSSI). The mechanism was implemented and tested on an
XbeeWSNthat uses a modifiedMixed Hop and signalReceived routing for mobile
Wireless Sensor Networks (MHRWSN) protocol. The energy consumption results
have shown that the proposed system can save as much as 76% of power in Tx
operations while maintaining a packet reception rate of above 85% Platform: |
Size: 1959880 |
Author:elmustafasayed@gmail.com |
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Search - wireless Sensor Networks power consumption