基于CanFestival和μC/OS-Ⅱ的CANopen平台构建

基于开源的CANopen架构CanFestival和嵌入式实时系统μC/OS-Ⅱ,提出了一种构建CANopen从站平台的方法。详细阐述CANopen协议栈的软件结构设计,实现了μC/OS-Ⅱ系统在MC9S12XF512上的移植,并将CANopen从站协议的状态机封装成任务后嵌入到μC/OS-II中运行。该硬件平台采用单片机MC9S12XF512和高速CAN总线收发器TJA1040来实现。通信测试表明CANopen从站通信稳定,实现了DS301通信规范的功能。     

基于CAN总线的混合动力汽车控制系统设计

通过分析奔腾混合动力汽车的整体控制要求以及各控制模块之间的任务分配,论文在研究CAN总线通信技术的基础上,选取MC9S12DP512作控制芯片,并设计了CAN通信模块的硬件电路和软件工作流程,给出了CAN模块的初始化实例。根据HEV发动机和传动系统的特点设计了整车控制策略,并对其整车控制逻辑的软件实现进行了说明。     

电动车车身网络CAN总线通讯实现

本文首先简要介绍了CAN总线的技术特点,同时把针对电动汽车的特点,建立车身网络的拓扑结构.详细的介绍了CAN通讯协议准的拓扑结,制定了CAN总线应用层协议的通讯报文形式.CAN总线通讯的硬件采用MC9S12DP51216单片机.应用LABVIEW软件,定义各个控制量的函数结构,并且建立不同模块的程序框图.为了检验车身网络的通讯数据,建立数据控制面板和显示面板,对通讯数据进行检测.     

基于FlexRay总线的分布式测控系统

介绍了一种高可靠性分布式测控系统设计,采用FlexRay网络作为现场测控网络.该总线采用时间触发方式,并具有数据传输速率高、可靠性高和实时性好等优点,它给工业领域监控系统中原有的RS485、CAN总线等通信方式带来了更新换代的可能性.研究了FlexRay总线技术的硬件结构和通信协议,利用飞思卡尔单片机MC9S 12XF512作为主芯片,实现了多节点间的通信,为FlexRay总线技术在分布式测控系统中的应用奠定了基础.     

基于LTC6802的磷酸铁锂电池采集系统

设计一种基于电池监测芯片LTC6802的磷酸铁锂动力电池组状态采集系统.采用嵌入式微处理器MC9S08DZ32对12串电池组状态数据进行采集,并通过CAN(Controller Area Network)总线上传到主机[1].文中对系统的整体结构和工作原理进行了介绍,并给出了具体的硬件和软件设计方案.     

S12X系列双核单片机的整车控制器CAN结点设计

XGATE内核的MC9S12XE系列双核单片机具有数据处理速度快、反应时间短、功耗低等优点,在汽车电子领域有着很好的应用前景。本文介绍了Freescale公司MC9S12X系列双核单片机在混合动力汽车整车控制器中应用的优点,给出了其进行CAN总线通信的硬件接口设计与执行流程。最后给出了其利用协处理器XGATE管理CAN总线通信的典型配置方法。     

基于MC9S12DP512和μC/OS-Ⅱ的CANopen主站开发

本文给出一种基于MC9S12DP512和μC/OS-Ⅱ的CANopen主站解决方案,主要阐述了μC/OS-Ⅱ的移植、MC9S12DP512底层驱动模块的编写和CANopen主站的结构及测试结果。     

基于FPGA的动力电池管理系统研究与开发

构建了基于单片机芯片MC9S12DG128与FPGA的电池管理系统,实现了数据监测、电池均衡、安全管理、荷电状态( SOC)估计、局域网(CAN)通信等功能.详细介绍了使用该系统模块的电池包的分布式结构特点,电池管理模块的CAN总线接口及硬件和软件功能设计.     

基于CAN通信的烟雾报警监控系统设计

本文介绍了一种基于CAN通信的烟雾报警监控系统。通过飞思卡尔MC9S12C32单片机将烟雾传感器的报警信号转换为CAN通信的方式,再通过上位机实现了对指定区域的烟雾状态监控。文中给出了系统的整体结构,硬件设计和软件设计以及通讯方案。     

基于微控制器MC9S12XEP的整车高压电安全保护控制器

介绍一种基于微控制器MC9S12XEP的整车高压电安全保护控制器的设计.该控制器通过CAN通讯总线与整车高压电动力控制系统连接,负责给整车高压电动力系统安全上下电,当整车高压电动力系统出现严重故障信号时,整车高压电安全保护控制器直接断开高压开关.     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。