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无线传感网中链路级能量有效策略的研究 被引量:5
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作者 姜华 郑春雷 刘海涛 《传感技术学报》 CAS CSCD 北大核心 2006年第6期2738-2742,共5页
无线传感器网络是一组带有无线收发装置的传感器节点组成的临时性的网络自治系统,由于无线传感器网络的节点是用有限寿命的电池来提供的,因此能量有效策略成为无线传感器网络研究的关键问题.由于传感节点的能耗主要集中在数据的接收和... 无线传感器网络是一组带有无线收发装置的传感器节点组成的临时性的网络自治系统,由于无线传感器网络的节点是用有限寿命的电池来提供的,因此能量有效策略成为无线传感器网络研究的关键问题.由于传感节点的能耗主要集中在数据的接收和发送过程,因此研究传感节点之间链路级能量有效策略具有重要意义.主要针对链路级能量有效策略的研究,分析和总结了差错编码和低功耗调制的能量有效策略,提出了新的MAC层协议,并给出了OPNET仿真结果分析. 展开更多
关键词 无线传感网 链路级 能量有效策略 信道接入 OPNET
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基于精细梯度策略的多链路协同数据转发协议 被引量:2
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作者 朱红松 赵磊 +2 位作者 徐勇军 李晓维 孙利民 《软件学报》 EI CSCD 北大核心 2009年第11期3045-3059,共15页
实验表明,无线传感网的链路存在短时时变特性.链路估计方法对中长时链路变化具有路由指示能力,而对短时变化链路表现不佳.在精细梯度模型下提出一种基于ARQ(automatic repeat-request)的多链路协同转发协议(multi-link cooperative forw... 实验表明,无线传感网的链路存在短时时变特性.链路估计方法对中长时链路变化具有路由指示能力,而对短时变化链路表现不佳.在精细梯度模型下提出一种基于ARQ(automatic repeat-request)的多链路协同转发协议(multi-link cooperative forwarding protocol on fine-grain gradient strategy,简称MCFS),通过单发多收和基于随机同步竞争窗的自举应答算法来消除链路短时变化的影响.通过基于非齐次马尔可夫链的短时时变链路模型上的NS2仿真,实验结果表明:MCFS协议能够有效适应短时链路变化;在可控条件下,具有比基于HOP/PRR的单链路优化协议、分离和缠绕多路径更好的网络抵达率和能量效率;这种性能优势与网络规模和部署密度无关. 展开更多
关键词 无线传感器网络 能量效率 多链路协同转发策略 功率调节 短时时变链路 非齐次马尔可夫链
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Toward cost-effective residential energy reduction and community impacts: A data-based machine learning approach
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作者 Adel Naji Badr Al Tarhuni +2 位作者 Jun-Ki Choi Salahaldin Alshatshati Seraj Ajena 《Energy and AI》 2021年第2期66-79,共14页
Many U.S.utilities incentivize residential energy reduction through rebates,often in response to state mandates for energy reduction or from a desire to reduce demand to mitigate the need to grow generating assets.The... Many U.S.utilities incentivize residential energy reduction through rebates,often in response to state mandates for energy reduction or from a desire to reduce demand to mitigate the need to grow generating assets.The assumption built into incentive programs is that the least efficient residences will be more likely take advantage of the rebates.This,however,is not always the case.The main goal of this study was to determine the potential for prioritized incentivization,i.e.,prioritizing incentives that deliver the greatest energy savings per invest-ment through an entire community.It uses a data mining approach that leverages known building and energy characteristics for predicting energy consumption of houses that collectively can be considered representative of all residences within an entire community.From this model,it estimates natural gas consumption and savings,and corresponding implementation costs associated with the adoption of the most impactful energy reduction measures.The resulting savings and cost estimates allow us to develop a sequential energy reduction strategy whereby the most economic measures within the whole utility district are addressed.The results show that an energy reduction of 36%can be achieved at a levelized cost of less than$14 per mmBTU($14,780 per MJ),demonstrating the strong potential of this approach.A corresponding Economic Input–Output Analysis captures the cascading community economic impacts of this strategy.The results show that for the roughly 45,000 single-family residences in the studied region,an initial energy efficiency investment of$26M could result in a total cascading multiplier economic impact of$41M and additional economic impacts of$2.2M for the lifetime of the considered energy efficiency measures. 展开更多
关键词 Building energy efficiency Data mining Machine learning levelized cost of energy saving energy reduction strategy Economic input-output analysis
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