针对传统能量采集器输出功率过低、单一能量采集单元不足以直接驱动传感器节点等负载的问题,设计了一种多路并行可调谐能量采集电路。该电路包括能量采集源模块、全桥整流模块、电容存储模块、电压调整模块和负载模块五部分。Multisim...针对传统能量采集器输出功率过低、单一能量采集单元不足以直接驱动传感器节点等负载的问题,设计了一种多路并行可调谐能量采集电路。该电路包括能量采集源模块、全桥整流模块、电容存储模块、电压调整模块和负载模块五部分。Multisim软件仿真结果表明该电路的最终输出电压相比标准能量采集(standard energy harvesting,SEH)电路提高了1.11倍;实验测试结果显示,采用该电路后输出电压稳定在5 V,最大输出功率为15 m W,比SEH电路提高2.12倍,能量传输与利用效率显著提高。展开更多
A new algorithm W ECOP is presented to effect incremental changes on a standard cell layout automatically.This algorithm deals with cell inserting and cell moving based on rows instead of on cells as most placement a...A new algorithm W ECOP is presented to effect incremental changes on a standard cell layout automatically.This algorithm deals with cell inserting and cell moving based on rows instead of on cells as most placement algorithms usually do.An integer programming problem is formulated to minimize the adjustment on the initial placement and a heuristic method is presented to search for a shifting path so as to optimize the wirelength.Test of W ECOP on a group of practical test cases shows that the algorithm can successfully accomplish incremental placement with good quality and high speed.展开更多
文摘针对传统能量采集器输出功率过低、单一能量采集单元不足以直接驱动传感器节点等负载的问题,设计了一种多路并行可调谐能量采集电路。该电路包括能量采集源模块、全桥整流模块、电容存储模块、电压调整模块和负载模块五部分。Multisim软件仿真结果表明该电路的最终输出电压相比标准能量采集(standard energy harvesting,SEH)电路提高了1.11倍;实验测试结果显示,采用该电路后输出电压稳定在5 V,最大输出功率为15 m W,比SEH电路提高2.12倍,能量传输与利用效率显著提高。
文摘A new algorithm W ECOP is presented to effect incremental changes on a standard cell layout automatically.This algorithm deals with cell inserting and cell moving based on rows instead of on cells as most placement algorithms usually do.An integer programming problem is formulated to minimize the adjustment on the initial placement and a heuristic method is presented to search for a shifting path so as to optimize the wirelength.Test of W ECOP on a group of practical test cases shows that the algorithm can successfully accomplish incremental placement with good quality and high speed.
