作业现场危害气体智能预警穿戴系统的设计与实现

工矿企业或市政施工现场的作业人员因作业环境中毒害气体超标导致中毒或窒息引起伤亡事件时有发生。为实时监测和预警作业环境中的毒害气体并及时反馈给作业人员和现场负责人,设计开发了一种用于作业现场危害气体的智能预警穿戴系统。首先给出该系统的架构设计,再进行硬件和软件子系统设计,其中硬件部分包括系统主控平台和电化学气体(ECG)传感模块,软件部分包括系统主控平台程序和安卓平台。本系统具有体积小、携带方便、成本低、检测气体种类灵活可变等特点,可以实时监测作业环境中的气体浓度值并及时告警,从而保障作业人员的人身安全。     

基于stm32的手持式气体检测仪

在日常生活及工作中,为了对有害气体进行有效的实时监测,避免长期处于有害气体的环境中从而对人员健康产生危害,针对目前国产气体检测仪最小检测浓度过高、响应时间过长、检测误差较大的问题设计了一种基于STM32的手持式气体检测仪;主要从内部硬件设计以及软件设计两个方面完成了手持式气体检测仪的设计,硬件方面的主控芯片选择STM32F103芯片,软件方面基于嵌入式系统开发实现对于VOC气体、温度、大气压力的测量、显示、数据存储以及数据分析,主要利用C语言来实现其功能;通过对整个检测仪系统的调试,证明这一系统能够对100ppb以下气体浓度进行响应、响应时间能够小于20s、检测误差能够小于5%FS;本气体检测仪除了普通环境的气体浓度监测,还能应用在有气体泄漏或空气质量要求的化学、工业、农业、动植物培育等场景。     

远程空气质量监测系统设计

为满足对城市空气质量的实时监测,设计了基于GPRS通信的远程空气质量监测系统.系统终端节点利用电化学空气传感器和MSP430F149单片机分别完成对气体浓度的检测和数据处理,然后将数据经GPRS通信模块送至中心服务器.中心服务器建立了数据库存储数据,并配置了专用软件完成查询、统计和绘图等操作.系统采用模块化设计,使用方便灵活.     

基于GPRS的输油管道实时监控系统

为了确保输油管道的安全运行,设计了基于GPRS的输油管道实时监控系统,系统采用"负压波"法进行泄露检测,通过RTU控制数据采集,利用GPRS无线传输通信实现现场RTU与监控室数据通信,从而完成对输油管道实时监控功能。     

基于GPRS的下水道气体远程监测系统设计

为了提高城市下水道气体监测的实时性和可靠性,设计了基于GPRS的下水道气体远程监测系统;该系统主要包括前端气体采集模块、GPRS数据无线传输模块、数据接收模块及监控中心;气体采集模块由气体传感器和数据采集单片机组成;单片机实时采集气体传感器中的数据,并将采集到的数据通过GPRS无线传输模块进行实时上传;数据接收模块把接收到的数据传送至监控中心服务器,由服务器对数据进行处理、显示、存储和统计等;通过对18个监测点的监测实验效果表明,该系统运行稳定可靠,能实现对下水道气体远程采集、无线传输和实时监测的目的。     

基于GPRS的油井远程监控系统设计

针对当今油井现场作业情况监控的缺陷,研究、设计并实现了基于GPRS模块的油井远程监控系统。系统综合应用了先进MCGS工控组态软件、GPRS模块、信号检测与处理等技术对油井现场进行了有效地监控,能对各种数据进行方便地统计和查询。通过模拟调试验证了结合上位机和下位机对油井大钩负荷、原油油管压力和油管内原油温度的远程监测和现场监控。     

基于GPRS的输油管道阴极保护远程监测系统设计

为实现输油管道阴极保护系统的远程自动化监测与参数集中管理,开发了一种基于GPRS的分布式管道阴极保护参数远程监测系统;设计监测终端检测现场保护点的阴极电位、恒电位仪电压和阴极保护电流,采用GPRS无线网络以TCP/IP方式远传数据至监测中心工控机,实现了分布式多监测点阴极保护状态的在线监测与参数管理;运行测试结果表明,该系统稳定可靠,实现了对多站点、多通道数据的远程集中监测,阴极电位的检测精度达到了0.5%,可满足输油管线阴极保护的远程自动化监测需求。     

一种可移动有害气体检测装置的软件设计

为克服固定式气体检测装置移动性差和便携式气体检测装置不能进行远程监测的不足,设计了基于SRV1可移动平台的气体检测装置,在完成硬件平台设计的基础上,提出了系统软件设计方案,包括整个软件系统架构及客户端程序和A/D转换等各主要功能子模块的实现过程,实现了通过客户端对气体检测装置的远程控制,达到了对装置所在区域气体浓度的实时检测的目的.     

作业现场便携式粉尘监测与预警系统的设计与验证

煤矿或各类工厂生产车间现场因作业环境中粉尘浓度超标导致爆炸事故引起伤亡事件时有发生。为实时监测和预警作业环境中的粉尘浓度并及时反馈给作业人员和管理负责人,设计开发了一种便携式的粉尘监测与预警系统。首先给出该系统总体架构的设计方案,再分别进行硬件和软件子系统设计,其中硬件部分包括粉尘传感模块和系统主控平台,软件部分包括系统主控平台驱动程序和用户平台应用程序。该系统具有体积小、携带方便、人机界面友好、成本低等特点,可以实时监测作业现场的粉尘浓度值并及时告警,从而确保人身安全,减少粉尘危害。     

基于WSN和RFID的矿井作业人员健康监测系统设计

针对煤矿井下工作场景恶劣复杂、人员健康及环境参数监控难度大、易造成安全事故等问题,采用物联网技术,设计了一种基于无线传感器网络（WirelessSensorNetworks,WSN）和射频识别（RadioFrequency Identification,RFID）的矿井作业人员健康监测系统。该系统利用WSN实时监控人体的心率、血氧及井下环境温湿度、气体浓度等数据;利用RFID技术定位井下作业人员;将所采集信息数据传输至服务器实时检测,实现安全预警并及时定位救援,从而远程监测作业人员健康。     

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     

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。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。