一种可用于危险品运输的智能车载终端设计与实现

设计了一种针对危险品运输车辆的智能车载终端,在STM32平台上实现车辆定位、车况监控、自动报警等功能,具有友好的人机交互界面.文章简要介绍系统的硬件结构,详述了车载终端软件系统驱动层和应用层的实现过程,对设定加速度传感器中断阈值做了从理论到实际的具体说明,并通过自主搭建的实验平台加以验证.该车载终端智能化程度高,具有较好的实际应用价值,尤其适用于危险品运输车辆的追踪监控管理需求.     

一种基于多传感器数据融合的移动主体运行轨迹捕捉机制

目前军事、医疗、科技、电影、游戏等很多应用领域都需要对移动主体的运行轨迹进行捕捉。现有的移动主体轨迹识别与绘制机制一般对设备的要求较高,且算法复杂,实时性不够理想。为此,提出一种基于多传感器数据融合的移动主体运行轨迹捕捉机制,以智能移动终端为载体,联合采用加速度传感器和姿态传感器采集数据,通过对加速度传感器和姿态传感器采集的数据进行处理和融合,并应用物理学中加速度和位移以及数学中曲线和直线的关系,准确识别移动主体的行动轨迹;然后利用光学透视投影的原理将轨迹投影到二维空间,并在智能终端的屏幕上绘制出来。实测结果表明,该机制具有较高的准确性和实时性,且具有理想的时空复杂度。     

物联网和区块链在智能工厂中的应用

"工业4.0"聚焦于智能工厂和智能生产,各国都在积极探索实践智能工厂。目前,基于物联网的智能工厂存在传感器端数据污染、传感器节点之间协同困难、传感器数据的传输层和应用层安全漏洞、物联网设备信息和位置信息泄露、物联网业务系统的多元异构等问题。文章提出了一个基于物联网和区块链智能工厂运行平台,利用区块链的分布式、可追溯、数据共享的特性及共识机制和智能合约,且通过在汽车行业应用进行分析,展现出区块链技术在智能工厂的产品全生命周期中实时传输、数据驱动、信息交互应用的潜力,以及降低管理风险和成本的优势。     

广电智能终端操作系统安全模型及技术实现

随着“三网融合”地不断推进,智能终端上承载的内容日趋多样化.如何确保下一代广播电视网络TVOS操作系统在智能电视终端平台上运行的各种数字电视业务的安全性、满足广电运营商对智能电视终端安全的要求是目前急需解决的关键技术问题.操作系统自身的安全尤为重要,本文从技术及安全角度对下一代广播电视网络TVOS智能电视操作系统的安全机制、安全体系架构加以分析论述,提出了广电智能终端操作系统自身的安全模型及技术实现方案.     

基于多屏协同的智能电视人机交互系统

基于多屏协同的智能电视人机交互系统定义了移动设备对智能电视的远程操控和文本输入的通信机制,以解决用户对智能电视的操作不灵活的问题,尤其改善用户的文本输入操作体验。该通信机制稳定、可扩展性强,适用于不同平台的远程操控和文本输入需求。该系统基于UPnP协议实现了快速连接移动设备和智能电视,并且以Android系统广播机制和输入机制为依据,提出了基于虚拟驱动的输入扩展机制,达到了原生鼠标键盘事件的效果,实现了利用移动设备对智能电视进行交互控制的设计。实验证明,该人机交互系统,具有无缝连接、操作简单的优点,尤其适合用户进行文本输入操作。     

车载终端车联网中间件技术研究与实现

为了解决因车身网络的数据协议差异造成的车载智能终端不能在多个车型上通用的问题,提出了一种车载智能终端中间件架构;在该架构中,采用多层结构隔离应用与网络直接访问;采用组件结构实现了应用的抽象与复用,降低应用开发难度;采用消息总线,负责管理组件之间的数据通信,为应用层提供一个统一接口的虚拟车身网络环境;通过消息的数据通信实现车载终端应用间的数据交互,底层采用通信服务层屏蔽了各种车身网络的差异性,解决了车载终端在不同网络协议车型上使用的通用性问题;最后,通过搭建实际的测试平台验证了该设计的可行性和有效性。     

影音分享者 华硕SDRW 08D3S-U外置刻录机

随着手持移动智能终端设备的普及,越来越多的用户将传统PC端上获得快乐的方式转移到新一代智能设备上。特别是智能电视的出现,通过46英寸以上屏幕获得试听感受肯定比PC效果更佳,但是复杂的连线与操作却让入门级用户困惑不解,     

数据驱动的智能交通虚拟仿真系统研究与设计

主要研究大数据环境下数据驱动的智能交通虚拟仿真系统体系结构及其关键技术。首先对数据驱动进行简要描述,并引出相关研究的现实意义。随后提出数据驱动的智能交通虚拟仿真系统体系结构,从面向智能交通虚拟仿真的数据处理、数据驱动技术、决策支持理论与方法、虚拟仿真环境等方面讨论了实现数据驱动的智能交通虚拟仿真所需解决的主要问题和关键技术,支持交通工程研究和应用。     

基于 Android 智能手机的健康监护终端研究

移动通信、智能计算等技术的飞速发展和智能终端的日益普及为移动医疗的实施和广泛应用提供了机遇。本文设 计并实现一种基于 Android 手机的人体生理参数监护终端。生理信号采集传感器与手机终端之间利用蓝牙无线通讯技术组 成躯域传感器网络,实际应用表明该终端可实现对患者的监护、诊断和健康管理。     

访问时间自调节的终端隐私数据保护方法

人们依赖智能终端获取网络服务以满足生活需求,智能终端也因此获得了用户隐私数据的长期使用权,若这些智能设备超出用户可控范围,用户隐私信息也随之泄漏,因此保证终端获取的隐私数据的安全尤其重要。针对以上需求,本文提出了一种访问时间自调节的终端隐私数据保护方法。该方法提供了一种基于滑动时间窗口的细粒度访问控制方法,应用了基于临时参数的动态有限授权规则,并使用临时参数对用户进行身份认证和访问控制,采用数据脱敏对敏感数据进行安全保护,可满足客户端获取的数据的安全性,同时满足了数据的可用性。将本文提出的基于访问控制、授权时间和数据脱敏的方法与现有的数据保护方法进行了对比,结果表明了本方法的可行性和有效性。     

A design and implementation of a framework for games in IoT

Interconnection of the sensing and actuating devices providing the ability to share information across platform through a unified framework for enabling innovative applications. This is achieved by seamless ubiquitous sensing, data analytics and information representation as the unifying framework. Extending the current internet with interconnected objects and devices and their virtual representation has been a growing trend in recent years. Internet of Things (IoT) services are becoming a popular services. This will be supported challenges in a large of aspects such as smart health, green energy, smart home and personalized applications. So, the IoT plays more and more important issue in lifestyle through entertainment such as Games. As of yet, there has not been much research done on IoT environment games as a service. In this paper, we propose schemes of the design and implantation of IT convergence framework for games as a service of IoT. First of all, we discussed what to consider when design and implementation of IT convergence framework for games through contents using user’s mobile devices and various sensors in IoT environment and suggest related techniques. Then, we showed the possibility of games in the IoT environment by creating games and measuring the interactions of users in the IoT environment.     

User interface guidelines for the control of interactive television systems via smart phone applications

There are a growing number of smart phone applications allowing the user to control their television, set-top box or other entertainment devices. The success of these applications is limited. Based on findings from media studies in Austria and France focusing on how people currently use their TV and iTV systems and associated devices, this article describes recommendations for the design of a smart phone application enabling users to control Internet Protocol Television (IPTV) systems including all connected entertainment devices. Recommendations include the need to allow users to control devices that are related to the IPTV experience (not only the set-top box or television set) and the focus on scenarios of usage like supporting listening to music, enjoying a movie or controlling the connected home. Based on similarities and differences found in the two samples, future smart phone applications for controlling TV will only succeed if they provide meaningful functionalities that satisfy the (varying) user needs, support personalisation and personal usage and respect the limitations of mobile phones with respect to possible parallel activities performed.     

PalmRC: leveraging the palm surface as an imaginary eyes-free television remote control

User input on television (TV) typically requires a mediator device such as a handheld remote control. While this is a well-established interaction paradigm, a handheld device has serious drawbacks: it can be easily misplaced due to its mobility and in case of a touch screen interface, it also requires additional visual attention. Emerging interaction paradigms such as 3D mid-air gestures using novel depth sensors (e.g. Microsoft Kinect), aim at overcoming these limitations, but are known to be tiring. In this article, we propose to leverage the palm as an interactive surface for TV remote control. We present three user studies which set the base for our four contributions: We (1) qualitatively explore the conceptual design space of the proposed imaginary palm-based remote control in an explorative study, (2) quantitatively investigate the effectiveness and accuracy of such an interface in a controlled experiment, (3) identified user acceptance in a controlled laboratory evaluation comparing PalmRC concept with two most typical existing input modalities, here conventional remote control and touch-based remote control interfaces on smart phones for their user experience, task load, as well as overall preference, and (4) contribute PalmRC, an eyes-free, palm-surface-based TV remote control. Our results show that the palm has the potential to be leveraged for device-less eyes-free TV remote interaction without any third-party mediator device.     

Development of a virtual aquarium system interacting with a smart device

New applications of smart devices interacting with other computing devices are recently providing interesting and feasible solutions in ubiquitous computing environments. In this study, we propose an interactive virtual aquarium system that interacts with a smart device as a user interface. We developed a virtual aquarium graphic system and a remote interaction application of a smart device for building an interactive virtual aquarium system. We performed an experiment that demonstrates the feasibility and the effectiveness of the proposed system as an example of a new type of interactive application of a smart display, where a smart device serves as a remote user interface.     

Lightful user interaction on smart wearables

Smart wearables are body-worn small devices that require novel user interaction due to its compactness and wearability. Current UI/UX of smart wearables is rooted in a smartphone-like UI/UX that is inadequate in many cases constrained by such small form factors. To overcome these limitations, research efforts are invested for augmenting wearable devices with various sensors and improving efficiency of existing input modalities through careful orchestration. In this paper, we propose a new concept called lightful user interaction exploiting a readily available ambient light sensor as a novel and alternative user interface for smart wearables. We design and model lightful user interaction based on typical usages of representative smart wearables. Then, we demonstrate the proposed lightful user interaction through three implemented applications such as PIN entry, morse code, and control indicator, respectively. At the end, we evaluate the concept and applications in terms of occluded display area, input expressivity and lightweight implementation aspects to make a case for a promising novel and alternative UI for smart wearables.     

基于对称多项式的智能家居设备安全认证方案研究

智能家居设备中大部分传感节点计算能力较弱,而如何保证节点身份合法和数据传输安全是一个急需解决的新问题。基于对称多项式,提出一种匿名节点配对打分机制的认证方案。该方案预先在本地服务器生成节点之间的随机配对表,当节点向服务器发送消息时,首先通过配对表向相关联节点发送有服务器标志的认证信息,关联节点根据此认证消息分析是否含有自己的身份信息,然后返回给服务器该节点的身份可靠度分数,服务器进一步收集信息并计算该节点的可靠系数。当该系数低于一定的阈值时,则证明节点异常,从而及时清除该节点。该方案有效地解决了传统对称多项式加密被暴力破解而引发的节点身份安全问题,保证了接入节点的合法性。     

Automated discovery and integration of semantic urban data streams: The ACEIS middleware

With the growing popularity of Internet of Things (IoT) technologies and sensors deployment, more and more cities are leaning towards smart cities solutions that can leverage this rich source of streaming data to gather knowledge that can be used to solve domain-specific problems. A key challenge that needs to be faced in this respect is the ability to automatically discover and integrate heterogeneous sensor data streams on the fly for applications to use them. To provide a domain-independent platform and take full benefits from semantic technologies, in this paper we present an Automated Complex Event Implementation System (ACEIS), which serves as a middleware between sensor data streams and smart city applications. ACEIS not only automatically discovers and composes IoT streams in urban infrastructures for users’ requirements expressed as complex event requests, but also automatically generates stream queries in order to detect the requested complex events, bridging the gap between high-level application users and low-level information sources. We also demonstrate the use of ACEIS in a smart travel planner scenario using real-world sensor devices and datasets.     

An energy-efficient video transport protocol for personal cloud-based computing

Recently, we are surrounded by a collection of heterogeneous computing devices such as desktop computers, laptops, smart phones, smart televisions, and tablet PCs. Each device is operated with its own host operating system, has its own internal architecture, and performs its independent tasks with its own applications and data. A common property amongst these devices, namely that of internet-connectivity, allows them to configure personal virtual cloud system by interconnecting each other through an intermediate switching device. The personal cloud service should provide a seamlessly unified computing environment across multiple devices with synchronized data and application programs. As such, it allows users to freely switch their workspace from one device to another while continuing the interaction with the available applications. In order to support video applications, the cloud system should provide seamless video synchronization among the multiple devices. However, we note that the current cloud services do not provide efficient data flow among devices. In this paper, we propose and develop a new reliable transport protocol to support video synchronization for the personal virtual cloud system. In order to cope with battery limitation of many mobile devices in personal virtual cloud system, the proposed protocol is designed to provide energy efficient video communications. Our simulation results show that the proposed protocol can reduce end users power consumption up to 25 % compared to the legacy TCP with given packet loss probabilities and the average length of error bursts.     

SPH haptic interaction with multiple-fluid simulation

Physics-based fluid interaction plays an important role in computer animation, with wide applications in virtual reality, computer games, digital entertainment, etc. For example, in virtual reality education and games, we often need fluid interactions like acting as an alchemist to create a potion by stirring fluid in a crucible. The traditional input devices such as a mouse and keyboard can basically input 2D information without feedback. In recent years, the continuous development of haptic device not only can achieve six degrees-of-freedom input, but also can calculate the force in virtual scenes and feedback to the user to make a better virtual experience. How to use haptic device in different kinds of virtual fluid scenarios to provide better experience is an important issue in the field of virtual reality. On the other hand, the researches on multiple-fluid interaction especially based on smoothed particle hydrodynamics (SPH) method are very lacking. Therefore, we study the key techniques of haptic interaction with SPH multiple-fluid to compensate this defect in computer graphics community. Different from the single-phase flow, interaction with multiple-fluid flow has difficulties in the realization of properties of different phases. After adding the multiple-fluid simulation, it is also important to keep haptic interaction real time. Our research is based on the mixture model. We guarantee the authenticity of multiple-fluid mixing effect while changing the drift velocity solver to improve efficiency. We employ a unified particle model to achieve rigid body–liquid coupling, and use FIR filter to smooth feedback force to the haptic device. Our novel multiple-fluid haptic simulation can provide an interactive experience for mixing liquid in virtual reality.     

An object-based middleware supporting efficient interoperability on a smart home network

This paper proposes a novel object-based home network middleware for supporting the interoperability among home devices and smart grid devices. This middleware provides various types of abstract objects for flexible representation of heterogeneous home devices, which are classified based on their characteristics. It is also flexible enough to allow addition of new protocols and message conversion between different protocols through an abstraction layer, which are not supported by existing home network middlewares so that various protocols can be supported. As a result, it can be utilized to provide the interoperability among a variety of devices from sensors to typical home appliances as well as smart grid devices such as a home electric generator and a battery, which adopt different protocols. In order to demonstrate that home devices and smart grid devices are interoperable through the proposed middleware, we implement applications based on the middleware on a target platform consisting of embedded boards, sensors and laptops for emulation purposes of a home network. According to our emulation, this middleware can provide efficient interoperability among home devices and smart grid devices for future energy efficient home.