期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
嵌入式文件系统在移动数据采集器中的实现 被引量:7
1
作者 陈惠滨 陈仅星 《电子器件》 CAS 2005年第3期608-611,共4页
介绍基于Flash存储器的嵌入式文件系统的基本结构和特点,设计了一个应用于手持式移动数据采集器的方案。采用ATMega128和8MB的AT45DB081来实现,通过对文件系统数据存储过程的分析,给出了浮动位置法提高可靠性和交换缓冲区法降低系统资... 介绍基于Flash存储器的嵌入式文件系统的基本结构和特点,设计了一个应用于手持式移动数据采集器的方案。采用ATMega128和8MB的AT45DB081来实现,通过对文件系统数据存储过程的分析,给出了浮动位置法提高可靠性和交换缓冲区法降低系统资源开销,并已在实际应用中得到了验证。 展开更多
关键词 FLASH存储器 嵌入式系统 移动数据采集器 文件系统
在线阅读 下载PDF
ATMega128 IAP技术在移动数据采集器中的应用 被引量:3
2
作者 陈惠滨 黄海 《电子器件》 CAS 2005年第1期101-104,109,共5页
采用ATMeaga128 IAP技术,利用串行或红外通信方式,实现对移动数据采集器的应用软件升级。通过制订上位机(PC)与移动数据采集器的通信协议,规范两者之间阻塞式通信交互过程,及采取 IAP软件升级过程的可靠性和保密性措施,成功实现移动数... 采用ATMeaga128 IAP技术,利用串行或红外通信方式,实现对移动数据采集器的应用软件升级。通过制订上位机(PC)与移动数据采集器的通信协议,规范两者之间阻塞式通信交互过程,及采取 IAP软件升级过程的可靠性和保密性措施,成功实现移动数据采集器在线编程方法的应用软件升级,提高了移动数据采集器可维护性。 展开更多
关键词 ATMEGA128 移动数据采集器 IAP FLASH ROM 阻塞式通信
在线阅读 下载PDF
移动式数据采集器中文人机交互模块的实现
3
作者 尹刚 叶英植 王剑钢 《电子器件》 CAS 2005年第2期325-327,369,共4页
提出了一种应用于移动式数据采集器的中文人机交互模块的设计及实现方案。系统外扩大容量存储器,存放国标汉字库及汉字码表。通过合理地汉字码表编排,降低数字式行列键盘汉字机内码检索算法实现的复杂度。成功地实现对软硬件资源敏感的... 提出了一种应用于移动式数据采集器的中文人机交互模块的设计及实现方案。系统外扩大容量存储器,存放国标汉字库及汉字码表。通过合理地汉字码表编排,降低数字式行列键盘汉字机内码检索算法实现的复杂度。成功地实现对软硬件资源敏感的移动数据采集器的LCD显示屏点阵汉字显示技术和数字键拼音输入法汉字输入技术的中文人机交互平台的设计。 展开更多
关键词 中文人机交互 移动数据采集器 汉字显示拼音输入法
在线阅读 下载PDF
Enabling Energy Efficient Sensory Data Collection Using Multiple Mobile Sink 被引量:3
4
作者 Madhumathy P Sivakumar D 《China Communications》 SCIE CSCD 2014年第10期29-37,共9页
Mobile sink is the challenging task for wireless sensor networks(WSNs).In this paper we propose to design an efficient routing protocol for single mobile sink and multiple mobile sink for data gathering in WSN.In this... Mobile sink is the challenging task for wireless sensor networks(WSNs).In this paper we propose to design an efficient routing protocol for single mobile sink and multiple mobile sink for data gathering in WSN.In this process,a biased random walk method is used to determine the next position of the sink.Then,a rendezvous point selection with splitting tree technique is used to find the optimal data transmission path.If the sink moves within the range of the rendezvous point,it receives the gathered data and if moved out,it selects a relay node from its neighbours to relay packets from rendezvous point to the sink.Proposed algorithm reduces the signal overhead and improves the triangular routing problem.Here the sink acts as a vehicle and collect the data from the sensor.The results show that the proposed model effectively supports sink mobility with low overhead and delay when compared with Intelligent Agent-based Routing protocol(IAR) and also increases the reliability and delivery ratio when the number of sources increases. 展开更多
关键词 sink mobility data gathering rendezvous point biased random walk andwireless sensor network
在线阅读 下载PDF
Energy-Efficient Mobile Data Collection Adopting Node Cooperation in an Underwater Acoustic Sensor Network
5
作者 Yougan Chen Xiaoting Jin Xiaomei Xu 《China Communications》 SCIE CSCD 2017年第6期32-42,共11页
This paper considers an underwater acoustic sensor network with one mobile surface node to collect data from multiple underwater nodes,where the mobile destination requests retransmission from each underwater node ind... This paper considers an underwater acoustic sensor network with one mobile surface node to collect data from multiple underwater nodes,where the mobile destination requests retransmission from each underwater node individually employing traditional automatic-repeat-request(ARQ) protocol.We propose a practical node cooperation(NC) protocol to enhance the collection efficiency,utilizing the fact that underwater nodes can overhear the transmission of others.To reduce the source level of underwater nodes,the underwater data collection area is divided into several sub-zones,and in each sub-zone,the mobile surface node adopting the NC protocol could switch adaptively between selective relay cooperation(SRC) and dynamic network coded cooperation(DNC) .The difference of SRC and DNC lies in whether or not the selected relay node combines the local data and the data overheard from undecoded node(s) to form network coded packets in the retransmission phase.The NC protocol could also be applied across the sub-zones due to the wiretap property.In addition,we investigate the effects of different mobile collection paths,collection area division and cooperative zone design for energy saving.The numerical results showthat the proposed NC protocol can effectively save energy compared with the traditional ARQ scheme. 展开更多
关键词 underwater acoustic sensor networks mobile data collection node cooperation cooperative communications energy efficiency
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部