利用ADμC812实现高频的数字测量

利用ADμC812单片机系统实现高频的数字测量,阐述了其硬件结构与软件设计。     

ADμC812单片机在铝电解槽熔体高度检测系统中的应用

本文介绍新型数据库采集系统芯片ADμC812在铝电解槽熔体高度检测系统中的应用。分析铝电解槽中热电偶感温特点及电解槽内电解质和铝液的传热性能，提出利用电解质和铝液传热性能差异测量熔体高度的方法。使用ADμC812单片机简化了高度检测系统的实现。     

ADμC812在振动监控表中的应用

详细介绍了ADμC812的内部结构和功能,叙述了旋转和往复式机器监测的重要性,并对基于ADμC812的在线振动监测系统进行开发和设计,给出了硬、软件的设计方案。     

基于ADμC812和DSP的机器人数据采集及融合系统设计

提出了基于ADμC812和DSP的双CPU结构的机器人数据采集及融合系统。介绍了该系统的硬件组成、基本工作原理 ,并给出了系统ADμC812的控制程序流程和通信帧格式     

新型高精度水位传感器性能测试系统

设计了一种新型的谐振式水位传感器性能的测试系统,系统的最终目标是测得被测传感器的特性曲线,并以此来判断传感器的性能达标情况。系统以ADμC812作为主控制器;硬件电路主要包括水位高度压力值测量电路、谐振频率的测量电路及气室进气口开闭的控制电路。系统的核心在于采用了一种新型的频率测量方法及数值处理方法来到得传感器的特性曲线,本系统彻底消除了传统传感器检测仪的低精度、高误差的特点,大大提高了系统测量的可靠性和精准度。     

ADμC812内部ADC的应用

介绍ADμC812内部ADC的应用,给出安全应用A/D转换器的电源条件,并详细介绍ADμC812内部ADC的C51驱动程序及ADC转换模块的电路构成中应注意的事项.     

ADμC812内部ADC的应用

介绍ADμC812内部ADC的应用，给出安全应用A／D转换器的电源条件，并详细介绍ADμC812内部ADC的C51驱动程序及ADC转换模块的电路构成中应注意的事项。     

基于ADμC812和DSP的机器入数据采集及融合系统设计

提出了基于ADμC812和DSP的双CPU结构的机器人数据采集及融合系统。介绍了该系统的硬件组成、基本工作原理，并给出了系统ADμC812的控制程序流程和通信帧格式。     

SPI串行总线接口及其实现

本文以ADμC812单片机为例，详细介绍了SPI总线接口的逻辑时序，并运用软件模拟SPI总线时序的方法，实现MCS51系列单片机同ADμC812单片机的SPI总线接口通讯。     

高效无泄漏流程泵测控台数据采集系统

高效无泄漏流程泵主要应用在石油化工行业,是石化产业的未来替代性产品。本文介绍了在高效无泄漏泵测控台中应用ADμC812构造的数据采集系统,特别是ADμC812中的ADCDMA工作方式在多路数据采集中的应用。     

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。     

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.     

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     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

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.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.