城市消防远程监控系统的设计

本文给出了城市消防远程监控系统的设计方案。依据本方案,在不改变建筑物原有火灾自动报警系统的前提下,加入了自动报警网络监控器,按照规定的协议,对各种火灾报警控制系统的报警信号进行转换并统一格式,有效避免了不同火灾报警系统相互独立,不能通信的问题,实现了对联网单位的火灾报警信息进行远程监控。     

火电厂火灾自动报警与监控系统设计

文中对火电厂火灾自动报警与监控系统的设计进行介绍.火电厂火灾自动报警系统按照一级保护对象设计,采用控制中心报警系统,分区域和集中两级监控管理.阐述内容包括火灾报警系统区域划分、系统配置、系统运作模式、自动报警探测器的选择等,并介绍了自动喷水灭火和气体消防为主的自动消防监控系统,阐述了其组成及功能.该文所述火灾报警系统设计在国华宁东矸石电厂一期工程中已通过消防审查,为电厂安全运行提供了保障.     

分布式火灾自动报警网络监控系统的设计与实现

本文讨论利用公共交换电话网将火灾探测报警器连接起来构成分布式火灾自动报警网络监控系统的实现方法和技术，重点介绍了通信控制器的组成和实现，系统建成后使消防报警网络监控中心与各类火灾探测报警控制设备间直接通信，数据共享，透明监控，使消防管理工作由被动式的管理向主动式管理转变，促进了消防管理的科学化和现代化。     

城市建筑消防设施及火灾远程监控系统研究与实现

"城市建筑消防设施及火灾远程监控系统"实时对建筑物消防报警系统进行远程监控,了解建筑物当前的信息,及时准确地掌握楼宇的实际情况.该系统是为各消防自动设施安装使用单位、消防维护保养机构、消防部门提供相应服务的一个平台.     

基于VB的火灾自动报警系统软件设计

火灾自动报警系统需要消防报警主机对整个火灾报警系统进行监控,并实现监控点、火灾信息的数据库存储,同时还需要提供人机界面给操控员进行操控.本文将描述该软件系统的主要几个模块的实现方法.     

基于工控组态软件的火灾自动报警系统

介绍了南海小塘信用社的消防火灾自动报警系统。系统以工控机和控制台实现联动控制,以RS-485网为通讯网络,基于Windows NT的工控组态软件和VB、PB等开发工具做上层监控软件,实现信用社大楼的消防(火灾)实时监控与联动报警。     

城市火灾报警控制的监控系统设计与实现

火灾给人们的财产和生命带来的危害越来越大,特别是在城市的商场、高层建筑以及大型建筑物等人口密集的地方。以往火灾报警主要是通过人工手动通知消防局,这样很可能会导致火灾控制的不及时,给人们带来严重的危害。提出基于嵌入式的火灾报警控制器通用监控终端的实现,能够对配有火灾报警控制器的大型建筑进行监控,并把监控信息发送到消防监控平台上,以弥补人工报警的不足。监控终端采用Linux系统嵌入式体系结构,能够监控不同类型的火灾报警控制器,并同时利用Qt框架提供了友好的用户界面。     

基于ZigBee的森林火灾监控报警系统

为实现低成本森林远程火灾自动报警,设计了一套基于ZigBee、GPRS和太阳能光伏的森林火灾监控报警系统。以CC2430为节点控制传感器采集图像和数据,本地通信时,数据通过ZigBee无线传感网络实现整片森林之间的通信,ZigBee节点间采用网状网络的自组网方式;远程通信时,协调器将处理好的数据通过GPRS技术传到监控中心以实现数据的显示和存储等;出现异常情况时,监控中心开启自动报警系统。系统采用太阳能供电,节约能源、减少布线。实验结果表明,该系统能够快速准确监控远程实时状况,并控制远程协调器,实现自动监控、报警功能,具有广泛的应用前景。     

大型综合商业建筑消防智能控制系统设计与实现

随着大规模,高层次的,复杂的建筑越来越多,消防控制问题是极为重要的,然而,拥挤的大型商场防火问题也不容忽视,随着生活条件越来越好,人们对生活环境的安全性要求就会越来越高,有一个易于管理、能发现火灾并及时报警的火灾自动报警系统显得极其重要。本文所讨论的消防智能控制系统现就是自动化信息技术在智能建筑中应用的实际体现,通过建筑消防自动控制系统设计和实现,能够完成对着火现场的检测、自动报警、消防设备自动控制、电气漏电监控的过程,我们通过某一大型综合商业建筑的消防自动控制系统的设计和实现过程,探索普遍的消防自动控制系统设计的规律。     

公交车辆的监控和调度系统

开发了一个简易多功能的公交车辆监控和调度系统,系统由多功能车载终端和监控调度软件组成;车载终端由超低功耗单片机MSP430F1611、GPS、GPRS和自动计数等模块组成,该终端以最低的硬件资源实现了远程监控、自动报站和超速报警等多项功能;监控调度软件结合GIS平台和智能调度管理,实现对车辆实时动态地监控和智能调度;TCP/IP通讯协议保证了数据交换的实时性和准确性;系统测试证明了该系统的可靠性和稳定性.     

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.     

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.     

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.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

正~~     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate