基于ARM的灭火机器设计

以室内环境为研究对象,设计了一个自主行走的灭火机器人。系统以ARM单片机为核心控制单元,结合避障传感器、红外传感器和灰度传感器等实现了机器人自主行走并灭火。根据环境参数要求,对机器人的设计方案进行了合理的选择和分析,实现了机器人稳定、快速、精确消灭火源。通过实例验证,设计方案稳定可靠,机器人可在10秒内完成寻找火源并灭火。     

基于LPC2119的自主式移动机器人设计

以Philips公司的ARM单片机LPC2119为控制核心,提出了一种自主式移动机器人的设计方案。应用98C1051构成多超声传感器子系统控制电路,由此子系统实现对障碍物的测距及机器人的自主避障行走控制;通过光敏传感器实现机器人对光源的感知和寻找;通过无线通信芯片PTR2000实现移动机器人与计算机之间的无线通信。     

多路径识别的智能循迹机器人设计与实现

智能循迹机器人在多传感器信号融合处理、多路径识别方面尚存缺陷。设计了一种具有多路径识别和测速反馈功能的自主循迹机器人,机器人采用AT89S52单片机作为控制核心,通过红外光电传感器实时检测路径情况,槽型光电传感器检测机器人运行速度,利用优先级判决法处理传感器反馈给单片机的信号,控制机器人的速度及转向。试验结果表明,设计的机器人能够很好地解决多种路径识别与冲突问题,可以自主准确、快速地实现对黑色引导线的判断和处理,使机器人根据引导线走向稳定地行驶。     

基于Atmega16的自主寻线避障智能车设计

设计并实现一种基于ATMEGA16单片机控制的自主寻线、避障、检测火焰并报警的智能小车。该智能车通过火焰传感器检测火焰,红外传感器检测轨道信息,红外对管检测障碍物,传感器将采集到的信息返回到单片机,单片机对信息做出相应的指挥控制,从而实现小车的自主寻线,稳定避障及检测火焰等功能。实验证明该小车寻线稳定、避障准确、检测火焰灵敏。     

基于视觉的高速寻线机器人设计与实现

针对某些机器人比赛中对机器人寻线行走速度方面的特殊要求，本文提出了一种全新的高速寻线行走机器人设计方法，即采用低分辨率摄像头作为寻线传感器，增大寻线预判距离。机器人的核心控制器采用Freescale HCS12 16位单片机，系统利用片内A／D完成视频捕捉，通过视频处理和转向、速度控制，最终实现机器人高速寻线行走。     

基于STM32控制的智能灭火机器人设计

设计的灭火机器人采用ARM作为控制器.在机器人前进过程中,通过红外避障传感器可以有效避免与墙体发生碰撞;通过火焰传感器感受火焰信号,火焰传感器将信号输送给单片机高低电平,由单片机控制机器人的前进方向,自动寻找到火源;当到达火源边界,通过灰度传感器给单片机信号,启动灭火程序,从而有效完成灭火功能.     

新型灭火机器人的设计与实现

该文介绍了一款自主研发的灭火机器人,其控制核心采用ATmega168v单片机,以火焰传感器,红外光电传感器组成检测系统,利用直流电机做驱动,在控制策略上采用"迷宫走法"和"右手法则"配合使用,机器人自动寻找火源,找到火源后,机器人启动风扇进行灭火。     

助行机器人系统设计

提出了一种由行走意图引导和动力驱动的搀扶助行机器人系统ZJU Walker,该机器人系统能够为使用者提供身体支撑、行走辅助,并同时保证行走过程的安全性和舒适性.系统采用扭矩传感器作为人机接口感知使用者行走意图,并通过加速度传感器监测使用者行走步态,采用共享控制的方法结合行走意图以及由超声波传感器、红外测距传感器检测到的环境信息控制机器人的运动.介绍了机器人系统的总体框架、传感器系统以及运动控制算法的设计,并给出了实验数据以证明机器人系统的有效性.     

一种输电线路巡检机器人控制系统的设计与实现

介绍了一种超高压输电线路巡检机器人控制系统的设计与实现方法．根据巡检作业任务的要求，采用遥控与局部自主相结合的控制模式实现巡检机器人沿线行走及跨越障碍．设计了巡检机器人有限状态机模型，实现了机器人遥控与局部自主控制的有机结合．采用基于激光传感器定位的方法实现了巡检机器人的自主越障控制．实验结果表明，该机器人可实现沿线行走及自主跨越障碍，从而验证了控制系统设计的有效性与合理性．     

多传感器信息融合在轮式机器人运动控制中的应用

分析了多传感器信息融合模型的建立和实现的过程,并利用多传感器信息融合技术中的信息协同和信息互补来完成对轮式机器人的运动控制。运行结果表明机器人可以半径范围为40cm～100cm的圆周上自主运行并能够灵活调整轨道半径;当机器人接近擂台边缘约5 cm时会自动检测边缘位置并根据自身的姿态情况及时调整运动方向。该系统运动控制性...     

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)

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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