PC机与MSP430之间多机通信的设计

本文讨论了PC机与MSP430单片机之间构建多机通信系统的问题。在分析了PC机与MSP430单片机串口模块特性的基础上,给出了应用MSP430单片机进行多机通信系统设计的结构图,设计了MSP430与RS485的接口电路,并介绍了MSP430的软件流程图。     

多功能超低功耗的MSP430FG461x微处理器

在简要介绍TI公司MSP430单片机的基础上,主要讨论了TI公司最近推出的新款MSP430FG461x系列超低功耗微处理器.通过与MSP430F44x系列相比较,着重阐述该系列单片机新增加的实时时钟模块和运算放大器模块.     

MSP430和MCS-51单片机在数据采集中的应用比较

针对目前MSP430单片机在国内广泛使用的现实,将MSP430单片机与传统的MCS-51单片机在数据采集方面进行应用比较,得知使用MSP430单片机开发数据采集系统比使用MCS-51单片机要简便方便。同时指出使用MSP430单片机来开发数据采集系统需具备一定的单片机基础,开发者应根据自身的实际情况来选择合适的单片机。     

基于Proteus的MSP430单片机仿真设计

Proteus是单片机学习中广泛应用的仿真软件。本文以MSP430单片机控制花样彩灯为例,主要介绍了基于Proteus的MSP430单片机仿真的设计思路及调试过程,为无硬件支持条件下的MSP430单片机学习提供便捷。     

MSP430DAY研讨会在上海举行

德州仪器（TI）于2007年7月13日在上海举行了MSP430DAY研讨会。TI MSP430业务经理Mark Witt先生向广大媒体朋友详细介绍了MSP430系列产品的最新的技术创新与应用，并就大家关心的问题一一进行了解答。[第一段]     

电能计量芯片CS5460在MSP430中的应用

介绍一种基于TI公司的新型单片机MSP430设计的应用系统,利用MSP430超低功耗和高集成度的优点,通过与带有高速计算功能的串行接口的单相双向功率/电能计量集成电路芯片CS5460的连接实现功率测量,并给出读写C程序,最终实现了MSP430单片机与CS5460芯片的通信.     

新型单相电能表单片机MSP430FE42x

美国德州仪器新推出了一款专用单片机MSP430FE42x。这款单片机将电能计量模块直接嵌入在MSP430十六位单片机内部,相面于把一个电能计量芯片与一个MCU相结合,它使得单相电表的设计进一步简化,成本也得到进一步降低。 MSP430FE42x不是将电能计量模块与MSP430的CPU简单结合,它还提供了对内部模块的控制。如果用在单     

MSP430低功耗运行模式原理及应用

随着微处理器技术的发展,各种类型的单片机层出不穷。MSP430系列单片机以其强大的处理能力、超低功耗等优良的性能得到了广泛的应用。本文概述MSP430系列设备的优点,并着重介绍MSP430x1xx系列设备运行模式的工作原理及应用。     

MSP430系列单片机及MSP430F449单片机在医疗仪器中的应用

TI公司生产的MSP430系列单片机带有flash存储器，使得在线访问和改写数据变得很方便，具有其他单片机无可比拟的优点。本文扼要的介绍了TI公司生产的MSP430系列单片机的特性、各管脚功能以及简单应用，并结合自己的课题，简单介绍了MSP430F449单片机在医疗电子器械中的应用。     

基于DSP和MSP430双核交通监控终端的设计

介绍了由DSP和MSP430单片机组成的双核交通监控系统终端。在该系统采中,MSP430单片机负责交通灯的控制和车辆行进状态检测;DSP负责对违章车辆进行CCD抓拍、图像处理以及数据上传等工作。MSP430单片机与DSP通过主机接口HPI进行通讯;DSP通过GPRS接入互联网,将数据上传至交通违章记实录数据库。     

Expert system verification and validation: a survey and tutorial

Assuring the quality of an expert system is critical. A poor quality system may make costly errors resulting in considerable damage to the user or owner of the system, such as financial loss or human suffering. Hence verification and validation, methods and techniques aimed at ensuring quality, are fundamentally important. This paper surveys the issues, methods and techniques for verifying and validating expert systems. Approaches to defining the quality of a system are discussed, drawing upon work in both computing and the model building disciplines, which leads to definitions of verification and validation and the associated concepts of credibility, assessment and evaluation. An approach to verification based upon the detection of anomalies is presented, and related to the concepts of consistency, completeness, correctness and redundancy. Automated tools for expert system verification are reviewed. Considerable attention is then given to the issues in structuring the validation process, particularly the establishment of the criteria by which the system is judged, the need to maintain objectivity, and the concept of reliability. This is followed by a review of validation methods for validating both the components of a system and the system as a whole, and includes examples of some useful statistical methods. Management of the verification and validation process is then considered, and it is seen that the location of methods for verification and validation in the development life-cycle is of prime importance.     

Web与数据库互连技术的探讨

随着Internet/Intranet的迅猛发展,基于Web的数据应用需求日益扩大。这个应用主要表现为3个层次:信息共享与发布、信息存取以及企业业务处理。这三者均与数据库的支持有着密切的联系。随着应用的深入和趋于复杂,对数据库访问的功能和性能要求就越高。如何满足用户动态查询数据库的要求便成了亟待解决的问题,Web数据库的开发不仅仅是HTML的开发,还涉及到与数据库交互要使用的程序设计语言及技术。其中关键技术之一就是如何将数据库与Web互连,以达到最佳的服务性能。文中将就Web与数据库互连技术进行探讨。为了更好地说明一种技术,给出了一个应用实例。     

Cyberspace as a generator of changes in the aggressive-victim role

The interaction of adolescents’ presential and cyberspace contexts accentuates the emergence of the aggressive-victim role. This profile takes on new dimensions as a result of the many combinations involved in the co-existence of bullying and cyberbullying. The twofold object of the present work was to: (i) determine the prevalence of victim-aggressive in the various forms that this role might be found in the context of bullying and cyberbullying; and (ii) explore the synergistic relationship established between the type and frequency of the abuse suffered and the type and frequency of the aggression perpetrated. The sample consisted of 1648 adolescents of from 12 to 16 years in age. The instrument used to acquire the data was a questionnaire. The results revealed the existence of four categories of aggressive victims: traditional aggressive-victims, aggressivecybervictims, cyberaggresive-victims, and cyberaggresive-cybervictims. The types of bullying suffered and perpetrated were found to be directly related and the frequencies of these two classes of attack were positively correlated. This allows one to predict the cyberspace and presential behaviour that will be displayed by adolescents who are being subjected to certain types of bullying and cyberbullying.     

基于Authorware与Office兼容性课件制作技术研究

对Office及Authorware做了深入的研究和分析,Office有其应用简单、覆盖面广的特点,而课件制作工具Authorware有其交互性强和对多媒体元素较好控制的特性,将两者结合起来,能够制作出操作便捷、使用广范的课件。     

Real-world effectiveness of Ergonomic methods

The way ahead with the practical development and application of Ergonomic methods is through a better anticipation and appreciation of changes to system effectiveness and human work that will be incurred through the introduction of new technologies to the workplace. These improvements will involve an improved awareness by the system of the working context and environment. The argued future is with improvements in the handling and use of knowledge by systems. The development of suitable Ergonomics methods, or the careful adaptation of existing methods, should accompany any technological revolution. Moreover, future methods are needed that are specifically developed to be applicable to the real time study of work considering both work context and the amalgamation of results from the use of many diverse methods throughout the design and development life cycle of a system. Part of this process will be a necessary complementation of both quantitative and qualitative methods and guidelines. Another focus should be on creating improved Ergonomics participation within multidisciplinary system design and development environments throughout the system's life cycle. Only through this avenue can Ergonomics show a consistent and valued contribution to quality design and its development. In parallel to such a contribution will be an acceptance by other engineering disciplines, managers, and customers that such an application of Ergonomics is cost effective.     

空间故障网络的柔性逻辑描述

为使空间故障网络(space fault network, SFN)描述系统故障演化过程(system fault evolution process, SFEP)时能蕴含信息的不确定性和演化特征,克服因素、数据和演化本身的不确定性,提出使用柔性逻辑对SFN进行描述和改造。首先论述了SFN存在的问题和使用柔性逻辑解决这些问题的可能性。使用柔性逻辑描述SFN,应从SFN的最基本单元、事件发生关系、SFN结构方面进行。给出了SFN中与、或和传递关系的柔性逻辑表示。在柔性逻辑条件下给出了SFN的关系组,进而得到SFN最终事件状态的柔性逻辑表示。实例结果蕴含了SFEP中各事件、因素和演化过程之间的柔性逻辑关系及其不确定性,为SFEP的智能化研究提供了新方法论和理论基础。     

Dynamics analysis for a novel 6-DoF parallel manipulator I with three planar limbs

A novel 6-DoF parallel manipulator I with three planar limbs is proposed and its dynamics is analyzed systematically. First, its characteristics and DoF are analyzed and calculated. Second, the formulae for solving kinematics of the moving platform and the planar limbs are derived. Third, the formulae for solving the inertial wrench applied on the planar limbs and the moving platform are derived, and dynamics formula is derived for solving dynamic active forces applied onto the planar limbs. Fourth, a singularity of the proposed parallel manipulator is determined and analyzed. Fifth, an analytic example is given for solving the kinetostatics and dynamics of the proposed parallel manipulator, and the solved results are analyzed and verified by the simulation mechanism. Finally, a workspace is constructed and analyzed by comparing with an existing 6-DoF parallel manipulator.     

Environmental ergonomics: a review of principles, methods and models

A review of the principles, methods and models used in environmental ergonomics is provided in terms of the effects of heat and cold, vibration, noise and light on the health, comfort and performance of people. Environmental ergonomics is an integral part of the discipline of ergonomics and should be viewed and practised from that perspective. Humans do not respond to the environment in a way monotonically related to direct measures of the physical environment. There are human characteristics which determine human sensitivities and responses. Practical methods for assessing responses to individual environmental components are presented as well as responses to ‘total’ environments and current and proposed International Standards concerned with the ergonomics of the physical environment.     

元宇宙中区块链的应用与展望

元宇宙是虚拟数字世界与真实物理世界无缝融合的新生态,近来引发了各界的广泛关注。区块链、人工智能、虚拟现实/增强现实及传感技术、移动通信及泛在计算等各种新型互联网技术愈发成熟,使元宇宙的进一步发展成为可能。关于元宇宙的研究主要涉及产业项目、基础设施、关键技术、隐私安全等方面,这些研究虽然涉及区块链技术,但未具体指出区块链应用于元宇宙的优势及具体应用方式。区块链技术不仅可以为元宇宙提供开放自由的去中心化环境,而且可以为其提供公平合理的数字资产分配机制。主要从区块链赋能元宇宙中数字身份和数字资产管理的角度出发,分析了元宇宙的发展历程和特征,讨论了元宇宙发展所需核心技术及面临的挑战。同时研究了区块链的关键技术,并从区块链的本质特征及与其他技术融合优势两个方面对区块链应用于元宇宙做可行性分析。进一步提出元宇宙生态体系架构,重点详细分析了基于区块链的自我主权身份管理模型、区块链-非同质化通证（NFT,non-fungible token）工作流程及其在元宇宙中的应用。结合区块链和元宇宙的最新研究进展,从基础设施、通信和计算资源管理机制、监管与隐私保护以及区块链可扩展和互操作性4个方面指出区块链应用...     

面向移动互联网的统一通信会议

统一通信是指把计算机技术与传统通信相互融合的一种通信模式,利用先进的技术打破当前通信手段中以设备和网络为中心的限制,使人们只要通过最常使用的通信工具和应用,就可以便捷高效地在企业内部与同事、客户及合作伙伴沟通.本文以现有的企业统一通信的项目为背景,主要研究了会议的模块.对会议模块进行了设计,并相应的介绍了有关的MQTT协议和电话会议多媒体会议的流程与原理.最后再对自己的设计与研究进行了实验,最终实现了电话会议通话和多媒体会议通信的功能.