期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
DRILOG随钻测井井下仪器系统总线接口设计 被引量:3
1
作者 姜天杰 李辉 +2 位作者 姚文彬 刘建强 党煜蒲 《电子测量技术》 北大核心 2021年第7期26-30,共5页
DRILOG随钻测井系统是中海油田服务股份有限公司(中海油服)在十二五期间研制。由于井下特殊的高温高压环境以及仪器之间特殊连接方式,仪器之间的互联需要采用一种单芯总线,该单芯总线除了用于供电外还用于传输信号,仪器的机械钻铤外壳... DRILOG随钻测井系统是中海油田服务股份有限公司(中海油服)在十二五期间研制。由于井下特殊的高温高压环境以及仪器之间特殊连接方式,仪器之间的互联需要采用一种单芯总线,该单芯总线除了用于供电外还用于传输信号,仪器的机械钻铤外壳相连作为系统地,实现供电信号复用。重点针对单芯TBUS(TOOL BUS)总线关键器件参数对总线带载能力的影响问题,分析并研究了关键器件参数设计选择方法。设计了一种供电和信号耦合的物理层接口,通过现场实验和300井次的作业测试,结果表明该物理接口设计能有效降低总线信号波形畸变,提升总线系统的带负载能力。 展开更多
关键词 随钻测井 供电信号复用 单芯总线 信号耦合 畸变 带载能力
下载PDF
Research on Network-on-chip Dynamic and Adaptive Algorithm and Choice Strategy
2
作者 Dong Li 《International Journal of Technology Management》 2013年第2期15-19,共5页
With further increase of the number of on-chip device, the bus structure has not met the requirements. In order to make better communication between each part, the chip designers need to explore a new structure to sol... With further increase of the number of on-chip device, the bus structure has not met the requirements. In order to make better communication between each part, the chip designers need to explore a new structure to solve the interconnection of on-chip device. The paper proposes a network-on-chip dynamic and adaptive algorithm which selects NoC platform with 2-dimension mesh as the carrier, incorporates communication energy consumption and delay into unified cost function and uses ant colony optimization to realize NOC map facing energy consumption and delay. The experiment indicates that compared with random map, single objective optimization can separately saves (30% - 47 %) and ( 20% - 39%) in communication energy consumption and execution time compared with random map, and joint objective optimization can further excavate the potential of time dimension in mapping scheme dominated by the energy. 展开更多
关键词 NETWORK-ON-CHIP system on chip energy consumption DELAY MAP
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部