共查询到20条相似文献,搜索用时 62 毫秒
1.
介绍了利用nRF401芯片进行无线传输的设计思想和实现方法,从实际应用角度介绍了nRF401与单片机AT89S51组成的无线切削温度检测系统,并给出了硬件原理图和部分程序源代码。 相似文献
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nRF401为单片无线收发芯片,施工升降机是高层建筑施工必备的运输设备之一,施工升降机自动控制系统包括楼层呼叫信号系统和吊笼主控系统。利用nRF401芯片很好地解决了施工升降机楼层呼叫信号系统与吊笼主控系统之间的信号传输及两吊笼主控系统之间运输协调.提高了施工升降机的运输效率。 相似文献
3.
基于ATmega16L和nRF401实现的数据采集无线传输系统 总被引:1,自引:0,他引:1
介绍了一种基于ATmega16L和nRF401实现的数据采集无线传输系统,以温度、湿度、压力的信号采集为例,详细地叙述了系统设计原理与软硬件的实现方法。 相似文献
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介绍了一种基于ATmegal6L和nRF401实现的数据采集无线传输系统,以温度、湿度、压力的信号采集为例,详细地叙述了系统设计原理与软硬件的实现方法。 相似文献
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介绍了一种基于无线数据传输芯片nRF2401的人体消化道微型诊查系统,系统由“胶囊装微型诊查系统”、“体外数据记录装置”、“数据处理系统”三部分组成。利用传感器采集温度和压力数据,采用C8051F311单片机控制nRF2401芯片进行发送和接收数据。经动物实验证明,系统功能基本实现,数据传输安全可靠。 相似文献
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介绍基于nRF401无线数据传输芯片的数据传输模块的设计与实现,给出微控制器与nRF401芯片的接口原理图;解决了微控制器串行口不足的问题,用软件模拟实现了一个串行口,并得出了51系列单片机波特率自适应功能的定时器初值设定方法,给出了计算公式. 相似文献
9.
基于无线传输的桥式起重机安全监测系统研究 总被引:5,自引:0,他引:5
针对桥式起重机常见的故障,提出了基于无线收发芯片nRF401进行无线传输的桥式起重机安全监测系统。该系统由主梁安全监测子系统、电气控制安全监测子系统、电动葫芦安全监测子系统、钢丝绳断丝检测子系统组成。各模块与数据处理中心之间的通信通过nRF401来完成,通过RS-232完成与上位机的通信。该系统具有人机界面友好、保护功能完善、可靠性高等特点,并具有一定的自诊断功能。 相似文献
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介绍了一种心电无线遥测系统.以C8051F005单片机和nRF401为无线发送和接收芯片,通过该系统达到了对心电信号的高精度实时传输和心脏疾病的诊断. 相似文献
11.
S. Shaw 《Journal of Computer Assisted Learning》1993,9(2):93-99
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. 相似文献
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European Community policy and the market 总被引:1,自引:0,他引:1
C. Lloyd 《Journal of Computer Assisted Learning》1993,9(2):86-91
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. 相似文献
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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。 相似文献
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Wayne O’Brien Author Vitae 《Journal of Systems and Software》2008,81(11):1997-2013
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. 相似文献
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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. 相似文献
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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 相似文献
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David Poole 《Computational Intelligence》1989,5(2):97-110
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. 相似文献
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Watts S. Humphrey 《Annals of Software Engineering》2002,14(1-4):39-72
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. 相似文献
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基于复小波噪声方差显著修正的SAR图像去噪 总被引:4,自引:1,他引:3
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。 相似文献
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R. NOSS 《Journal of Computer Assisted Learning》1987,3(1):2-12
Abstract This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development. 相似文献