黑夜中的“千里眼”——利凌（LILIN）PIH-7640IR 300米红外高速云台摄像机实测

关键词一：外型独特 PIH-7640IR外型十分独特,电机和一体化机芯采用隔仓设计,摄像机模块转动通过轴承带动。电机部分的外型类似圆形,外壳采用高级聚碳酸酯．结构扎实,防破坏性强。一体化摄像机模块上方采用了隐蔽式红外灯板自动开合设计．白天红外灯板合起．变成摄像机的遮阳罩．夜晚红外灯板自动或手动打开（如图1）。在测试过程中．我们将该摄像机、     

新型汽车红外夜视系统的研究与开发

通过对新型汽车红外夜视系统的原理分析、系统设计和技术研究，对现有红外夜视技术及相关器件进行了借鉴、移植与改造，并对摄像机的选型、红外灯的改进以及视频处理电路的制作等从理论与实践上进行了深入探索。所提出的设计思路与技术方法，可为相关行业研究人员提供参考。     

ET5106智能一体化设备

双视窗,可自由组合多种搭配方式：摄像机配红外灯,摄像机配热像仪,双摄像机等。强力弹簧及橡胶组合减振系统,可抗冲击载荷,适合车载环境使用。多重安装方式选择,如磁吸、螺栓安装等。拥有近距,远距双红外灯,其最大照射距离可达100M。红外灯可联动摄像机的光线,可手动关闭。     

基于MSP430单片机的云台控制系统设计与实现

为了满足当前监控领域中对高速、高精度球形摄像机的大量需求,提出了基于MSP430单片机及两相步进电机细分驱动芯片A3977的球形摄像机云台控制系统实现方案,并详细阐述了系统组成结构、软硬件设计。实践结果表明该系统具有调速范围宽、定位精度高、成本低及可靠性好等优点,具有良好的市场应用前景。     

浅谈低照度摄像机

在有大量红外光的场景中，没有办法很好做到精确的白平衡，所以一般的彩色摄像机在Sensor之前都会有红外滤镜以起到过滤红外光的作用。红外摄像机在红外灯开启时，存在大量的红外光，此时肯定不会使用红外滤镜过滤掉红外光，只能使用全透滤镜并切换成黑白图像。     

960H摄像机产品精选

CT—601Tescom700线可见（红外）照明室外摄像机 史上最高清模拟60H;史上红外光场最均匀;智能防止人脸红爆;高清晰,分辨率达700线;可调角度（白光）红外灯     

全方位的监控守望者11款网络快球摄像机评测专辑——大华（DAHUA）DH-SD6A82C-HN红外网络高速智能球

1、设计紧密 厚实可靠 大华DH—SD6A82C—HN设计沉稳大气,厚实的铝合金外壳搭配白色喷漆涂装．结构合理．球罩中间是其醒目的品牌LOGO,而摄像机镜头两侧配备了欧司朗高性能红外灯．     

基于多媒体处理芯片的矿井网络摄像机的设计

针对煤矿井下用模拟摄像机的不足之处,文章提出了一种基于数字化技术的网络摄像机的设计方案,详细介绍了数字化网络摄像机的设计与实现。该数字化网络摄像机硬件以Z228多媒体处理芯片为核心、软件以Linux为核心,不仅实现了矿井视频监控系统的数字化、网络化和智能化,提高了矿井视频监控系统的性能及稳定性,还具有集成度高、结构简单、易于开发、成本低、使用简便等特点。     

电路板红外图像多目标提取算法

电路板红外图像芯片提取是电路板红外图像故障检测系统中的重要环节,传统的芯片发热区域提取方法或多或少需要人工干预,在芯片较多和热辐射情况复杂电路板中人工参与效果不是很理想．基于电路板红外图像特征提出了一种自适应多目标区域增长算法,将该多目标区域增长算法与GVF—Snake模型相结合用于电路板红外图像芯片提取．利用多目标区域增长算法将每一块芯片的发热区域和辐射区域一并提取,再利用区域增长确定GVF-Snake模型初始轮廓,利用GVF模型进行芯片发热区域提取．实验表明,这种算法能够无人工干预的准确提取电路板红外图像所有芯片发热区域,具有一定的实用性和鲁棒性．     

基于PWM技术的LED线性调光电路的设计

LED灯因为稳定性高、无污染、效率好等优势已经成为新一代的照明光源。文中基于PWM技术调光技术,采用TL494芯片,设计一种了实用的LED调光电路。实验证明,所设计的LED调光技术,电路简单、发光效率高、功耗低、寿命长、成本低、性能优越。     

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