包装车间数字化无线视频监控系统的研究与实现

传统的模拟视频监控系统具有成本高,需要铺设专用线路,无法联网,存储量大等特点.随着网络技术和图像处理技术的发展,无线视频监控系统得到了广泛应用.介绍了基于WLAN的远程无线数字视频监控系统的组成、原理及实现方法,阐述了实现无线监控系统的关键技术.最后结合实际情况,给出了监控系统在包装车间的实现.     

无线红外监控系统在露天矿山爆破现场的应用

针对露天矿山爆破作业区域监控方式单一、人工投入大的问题,提出采用无线红外监控系统,来实现信息化远程监控。无线红外监控系统主要是由数字微波通信技术和无线红外对射光墙技术构建的无线红外光墙报警系统,为了证明该系统的应用效果,在分析了无线红外光墙报警系统的结构、特点和优势之后,阐述了以攀枝花白马铁矿为工程背景,进行相应工程实践的过程。实践证明,无线红外监控系统可安全高效地实现爆破作业区域无人化监管,对大规模矿山爆破现场监管具有一定的借鉴作用。     

Efficient monitoring approach for reputation system-based trust-aware routing in wireless sensor networks

Trust-aware routing in wireless sensor networks (WSNs) is a crucial problem that has drawn the attention of researchers. The motivation for tackling this problem arises directly from the highly constrained nature of a WSN and its easy exposure to insecure conditions. In this regard, reputation-based solutions are used to provide trust-aware routing. However, this approach requires that a node needs to continuously monitor its environment to detect misbehaviour events. This is considered to be a costly operation for WSN nodes because of its resource scarcity. Here, the authors propose a reputation system-based solution for trust-aware routing, which implements a new monitoring strategy called an efficient monitoring procedure in a reputation system (EMPIRE). EMPIRE is a probabilistic and distributed monitoring methodology that tries to reduce the monitoring activities per node while maintaining the ability to detect attacks at a satisfactory level. The proposed procedure has been evaluated using the Monte Carlo simulation. New evaluation methodologies are introduced to test and explore the efficiency of our proposed procedure. Simulation results of the reputation system show that reducing monitoring activities with EMPIRE does not have a significant impact on system performance in terms of security.     

移动成型鼓无线通信数传技术研究

设计应用无线数传技术实现数据传输的组合式成型生产线的监控系统,采用分布式结构建立统一协议模型实现不同终端设备的数据联网传输.研究符合组合式成型生产线的无线通讯技术,可以满足移动成型鼓工作时对电压、电流、运行速度、液压系统压力、故障状态等电气参数的网络传输.该技术已得到成功的实验测试并在其它行业得以应用,能有效提高系统监控与管理的效率.     

浅谈智能无线WIA技术在建筑能源管理云系统中应用

论文介绍智能无线WIA测控系统在建筑能源管理云系统中的优势及应用。该技术面向设备间短程、低速率信息交互的无线通信技术,具有很强的抗干扰能力、超低能耗、实时通信等技术特征,与传统的有线测控系统相比,具有低成本、高可靠、易维护、高灵活、易使用的特点。人们可以以较低的投资和使用成本完成建筑能源系统的建设,获取那些因成本原因而无法在线监测的重要建筑能耗数据,并以此为基础实施优化控制,实现提高建筑能效和节能降耗的目标。     

基于GSM/GPRS的无线监控系统设计

介绍了以嵌入式监控终端、用户手机和远程监控中心计算机构建的无线监控系统的设计.着重论述了无线模块在嵌入式系统中的应用方法.介绍了通过无线模块发送和接收短消息以实现对现场设备的监控方法;分析了如何依靠无线模块经过GPRS网络与接入Internet的固定IP计算机建立连接并进行通讯.结果表明,在现有的移动通讯网络覆盖的区域,利用本系统可以完成对现场设备的在线数据采集、远程无线数据传输与监控.在露天场所、野外、移动作业环境或有线网络无法接入的地点建立数据采集与监控系统时,基于GSM/GPRS网络的嵌入式远程无线监控解决方案具有突出的优势.     

基于物联网的爆破振动无线监测系统

针对工程爆破振动监测系统不断提出的新要求,基于新兴的物联网概念,结合无线网络技术,设计并研制了基于物联网的无线爆破振动监测系统。采用ARM为主控芯片的嵌入式操作系统,内嵌无线传输模块实时传输爆破数据,具有RFID设备认证功能和GPS全球卫星定位和精确定时功能,用户仅需登陆终端爆破监测管理系统即可获取爆破现场实时数据。基于物联网的爆破振动无线监测系统,能够大大地降低人工现场布线工作量、组网灵活、综合成本低,可广泛应用于各个领域的工程爆破振动监测,极具应用前景和市场推广价值。     

基于物联网的爆破振动无线监测系统

针对工程爆破振动监测系统不断提出的新要求,基于新兴的物联网概念,结合无线网络技术,设计并研制了基于物联网的无线爆破振动监测系统。采用ARM为主控芯片的嵌入式操作系统,内嵌无线传输模块实时传输爆破数据,具有RFID设备认证功能和GPS全球卫星定位和精确定时功能,用户仅需登陆终端爆破监测管理系统即可获取爆破现场实时数据。基于物联网的爆破振动无线监测系统,能够大大地降低人工现场布线工作量、组网灵活、综合成本低,可广泛应用于各个领域的工程爆破振动监测,极具应用前景和市场推广价值。     

A Parallel Simulated Annealing Architecture for Model Updating in Wireless Sensor Networks

In recent years, wireless sensing technologies have provided a much sought-after alternative to expensive cabled monitoring systems. Wireless sensing networks forego the high data transfer rates associated with cabled sensors in exchange for low-cost and low-power communication between a large number of sensing devices, each of which features embedded data processing capabilities. As such, a new paradigm in large-scale data processing has emerged; one where communication bandwidth is somewhat limited but distributed data processing centers are abundant. By taking advantage of this grid of computational resources, data processing tasks once performed independently by a central processing unit can now be parallelized, automated, and carried out within a wireless sensor network. By utilizing the intelligent organization and self-healing properties of many wireless networks, an extremely scalable multiprocessor computational framework can be developed to perform advanced engineering analyses. In this study, a novel parallelization of the simulated annealing stochastic search algorithm is presented and used to update structural models by comparing model predictions to experimental results. The resulting distributed model updating algorithm is validated within a network of wireless sensors by identifying the mass, stiffness, and damping properties of a three-story steel structure subjected to seismic base motion.     

基于无线技术的生理参数采集系统及其设计

应用无线技术的生理参数采集系统减少了系统间的电缆连接,具有携带方便、应用灵活等优点,在病人监护和运动医学中具有重要的意义.文中实现了以8051为主控芯片,PTR8000无线数据传输漠块为核心,围绕PC机构建的无线生理参数采集系统,具体阐述了系统的总体设计框图、硬件电路设计和软件编程.该系统实现了人体脉搏波的远程无线测量,传输性能稳定,可靠工作距离达100 m,对周围电子仪器干扰小,显示了很好的应用前景.     

基于WIA无线网络技术的热网计量监测系统的应用

主要介绍基于GPRS/3G无线网络传输技术的热网无线计量监测系统。该系统利用基于WIA技术的EDC无线数据采集设备集成现场仪表数据,通过无线网络将数据传输至热网计量监测软件平台,实现对热网系统的实时运行监测与高效管理。并结合案例详细描述该系统在热网监测领域的应用情况与优势。     

A Novel Multi-Hop Algorithm for Wireless Network with Unevenly Distributed Nodes

Node location estimation is not only the promise of the wireless network for target recognition, monitoring, tracking and many other applications, but also one of the hot topics in wireless network research. In this paper, the localization algorithm for wireless network with unevenly distributed nodes is discussed, and a novel multi-hop localization algorithm based on Elastic Net is proposed. The proposed approach is formulated as a regression problem, which is solved by Elastic Net. Unlike other previous localization approaches, the proposed approach overcomes the shortcomings of traditional approaches assume that nodes are distributed in regular areas without holes or obstacles, therefore has a strong adaptability to the complex deployment environment. The proposed approach consists of three steps: the data collection step, mapping model building step, and location estimation step. In the data collection step, training information among anchor nodes of the given network is collected. In mapping model building step, the mapping model among the hop-counts and the Euclidean distances between anchor nodes is constructed using Elastic Net. In location estimation step, each normal node finds its exact location in a distributed manner. Realistic scenario experiments and simulation experiments do exhibit the excellent and robust location estimation performance.     

一种新型的搓纸轮自动包装控制系统设计

目的针对搓纸轮生产企业人工包装成本高、效率低、包装精度差等问题,设计一种新型的搓纸轮自动包装控制系统。方法系统综合应用PLC和单片机,通过多个机械手的协同工作完成搓纸轮的自动包装;应用基于GPRS网络的无线通信技术,实现系统故障的手机短息提醒,并通过DTU将系统数据上传到云监控服务平台;基于WinCC开发人机交互界面,实现对系统运行的现场级监控;基于Labview开发监控系统,并综合应用云监控服务平台,实现对系统运行的远程控制端监控。结果该控制系统包装效率可达4个/min,包装故障率低于1%,无线通信故障率低于0.1%。结论实际测试表明,该控制系统具有良好的可靠性和稳定性,符合工业应用需求。     

复杂地质下圆弧形边坡控制爆破的应用研究

针对某铁矿水平巷道掘进爆破效率较低的问题,确定了掏槽方式和爆破参数是其主要影响因素。通过施工现场的试验结果对双楔形、单螺旋、九孔三种掏槽方式加以比较,选取最为合理的掏槽方式和爆破参数。实践表明,采用单螺旋掏槽方式提高了平巷掘进爆破效率,取得了良好的经济效益。     

基于动态差分GPS的滑坡位移监测系统

针对目前滑坡位移监测中的难点以及野外应用中的高度自动化、全天候、不受天气影响等要求,综合比较了各类滑坡位移监测方法和已有的监测系统,基于动态差分GPS算法,结合GPRS无线传输网络,设计了一种低成本的滑坡位移实时监测系统.将安置在滑坡监测现场的两台GPS接收机通过无线网络把观测到的原始数据传输至监控中心,然后在计算机上作差分解算,并实时显示出基线长度的变化曲线.实验结果表明该系统的测量精度能够满足滑坡位移监测的要求.     

Job partition and allocation using the prediction model in non-dedicated heterogeneous wireless network environments

Adapting wireless devices to communicate within grid networks empower users. This makes deployment of a wide range of applications possible within appropriate limits, including intermittent network connectivity and non-dedicated heterogeneous system capacity. The performance prediction model is used to improve the performance of the mobile grid job scheduling algorithm (MG-JSA). The proposed algorithm predicts the response time for processing the distributed application in each mobile node, although considering wireless network environments and inherent non-dedicated heterogeneous system capacity. Using this prediction model, the algorithm partitions and allocates the distributed jobs to available mobile nodes for rapid job processing. The efficiency of the MG-JSA model is demonstrated by evaluating its performance.     

爆破振动远程监测系统及应用

互联网时代为爆破振动远程实时监测提供了有力支持,最新开发的TC-4850N无线网络测振系统实现了远程遥控和数据实时传输,不仅改善了振动监测工作条件,还使振动监测更加高效、客观、公正。工程应用实例验证了TC-4850N无线网络测振系统非常有效,其具有良好的推广应用前景。     

烟气在线监测系统及思考

固定污染源排放的烟气会对环境造成污染,对其进行科学监测至关重要。本文介绍了现有的烟气在线监测系统,包括空气质量自动监测系统、烟气排放连续监测系统、差分光学吸收光谱法在线连续监测系统、物联网下无线传感器网络技术在线监测系统等,介绍了每个系统的组成、技术特点、监测方法、实际应用和发展方向,并从量值溯源和远程校准两个方面对烟气在线监测系统与计量系统的关系进行了阐述。     

Three-Dimensional Distance-Error-Correction-Based Hop Localization Algorithm for IoT Devices

The Internet of Things (IoT) is envisioned as a network of various wireless sensor nodes communicating with each other to offer state-of-the-art solutions to real-time problems. These networks of wireless sensors monitor the physical environment and report the collected data to the base station, allowing for smarter decisions. Localization in wireless sensor networks is to localize a sensor node in a two-dimensional plane. However, in some application areas, such as various surveillances, underwater monitoring systems, and various environmental monitoring applications, wireless sensors are deployed in a three-dimensional plane. Recently, localization-based applications have emerged as one of the most promising services related to IoT. In this paper, we propose a novel distributed range-free algorithm for node localization in wireless sensor networks. The proposed three-dimensional hop localization algorithm is based on the distance error correction factor. In this algorithm, the error decreases with the localization process. The distance correction factor is used at various stages of the localization process, which ultimately mitigates the error. We simulated the proposed algorithm using MATLAB and verified the accuracy of the algorithm. The simulation results are compared with some of the well-known existing algorithms in the literature. The results show that the proposed three-dimensional error-correction-based algorithm performs better than existing algorithms.     

道路温度场的远程监测系统设计

针对传统道路温度场监测设备存取数据不便、运行维护成本高、不适于野外长期工作的缺点,设计了道路温度场远程监控系统,论述了系统的整体结构,完成了远程终端软、硬件的低功耗设计以及可靠传输软件的设计,实现了对温度场的长期、可靠监控.实际运行情况表明,系统工作高效稳定、数据远程传输可靠、运行成本低,适于长期野外无人监测.