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1.
魏旻  王平  金基天 《仪器仪表学报》2012,33(7):1453-1459
工业无线技术是满足工业应用高可靠、低能耗等特殊需求的一类无线传感器网络技术。针对WIA-PA(wireless net-works for industrial automation-process automation)工业无线网络的特点,分析了工业无线网络入侵检测的重要性,设计了一种基于全信道分析仪的分层WIA-PA网络入侵检测和安全数据处理架构,提出了一种适用于WIA-PA网络的分层入侵检测方法,在此基础上,设计并实现了基于WIA-PA的安全管理系统。测试表明,基于全信道分析仪的入侵分析系统能够有效检测网络入侵攻击,基于安全管理者的设备安全入网、密钥管理和安全服务能够在无线环境中得到较好的应用,有效地解决了工业无线网络内部资源受限的问题,提高了WIA-PA网络通信的安全性能。  相似文献   

2.
基于"蓝牙"通信的现场控制技术   总被引:11,自引:0,他引:11  
探讨了基于以太网和无线技术的网络化控制系统EPA协议体系,提出了适应工业控制的现场级“蓝牙”通信协议体系,介绍了适应工业现场的“蓝牙”适配器和连接有线控制网络的“蓝牙”接入设备的实现方法。最后,以具体实例说明了软硬件的实现过程。  相似文献   

3.
无线局域网应用于工业控制系统研究   总被引:2,自引:0,他引:2  
该文通过对工业控制网络发展现状的分析,讨论了工业控制网络对无线技术的需求。并详细介绍了IEEE 802.11b无线局域网标准,在此基础上,介绍了基于无线技术的网络化智能传感器的概念及其在工业控制网络中的一种应用方案。  相似文献   

4.
This paper presents a stochastic analysis framework for estimating the system-level first-passage probability of the structural responses of multi-degree-of-freedom structural systems based on experimentally measured uncertainties. The uncertainties are quantified by comparing the measured structural responses using a wireless sensor system and the predicted responses from an analytical model. The wireless sensor network is designed based on a modular design method, and the experimental program details for the measurement of structural responses are provided using the developed wireless sensor network. This framework employs a Monte Carlo simulation (MCS)-based first-passage probability estimation technique in which a structural dynamic analysis is performed in each simulation realization. The framework is applied to a 16-story steel frame structure, and the first-passage probability of 16 locations and the series system passage probability of the entire system have been estimated. The effect of the dependency between the structural responses is considered, and the improvements that need to be made to the presented framework in the future works are discussed.  相似文献   

5.
Wireless sensor networks (WSNs) have recently extended application areas to numerous sectors such as industrial automation, military applications, transportation systems, building management, and environment surveillance. In particular, WSNs provide flexible, reliable, cost-effective solutions to monitor the real-time status of automated manufacturing facilities. A facility-specific WSN for reliable monitoring and efficient management of industrial facilities is called the facility sensor network (FSN). In general, industrial facilities run various electromagnetic devices causing electromagnetic interference (EMI), which disturbs wireless data communication. To obtain accurate and reliable data in such environments, the FSN needs to deal with the EMI by proper deployment of sensor nodes and their validation and fusion. This paper proposes a data processing protocol, called Interfered Sensor Data Processing Protocol (ISDPP) to handle the EMI affecting wireless communication. ISDPP is developed with a data fusion algorithm and an exponentially weighted moving average/fuzzy logic-based error detection method to obtain reliable information from the FSN. To evaluate the performance, experiments in various settings are performed in a test-bed manufacturing facility. The experimental results indicate the interfered data, and outliers can be filtered out even if unexpected interferences occur in the facility. The FSN with the ISDPP can provide efficient real-time monitoring solutions for various industrial applications.  相似文献   

6.
介绍了基于ZigBee协议的无线网络在温度测量系统的研制与开发。系统由网络协调器和多个节点构成,节点的结构和功能设计突出了工业应用的特点,对工业用无线传感器系统的研发具有一定的参考价值。  相似文献   

7.
张旭  陈锋 《仪表技术》2011,(8):1-4,10
环境水质实时监测是实现水污染监控和管理的基础。为了实现大范围的水质检测,基于CC1101通信模块,文章提出了一种环境水质分布式检测的无线传感网络协议,以有效减少通信开销。文中采用分层结构进行无线传感网络协议设计,定义了消息格式,采用LBT策略和ARQ协议实现了数据的可靠传输,基于路由发现功能实现自组网。该系统在实际应用中运行稳定,取得了较好的监测效果。  相似文献   

8.
ZigBee无线传感器网络技术在工业自动化监测中的应用   总被引:9,自引:0,他引:9  
首先介绍了基于IEEE 802.15.4标准的ZigBee网络结构的技术特点、传感器节点的结构.分析了ZigBee无线传感器网络与蓝牙、Wi-Fi等其他无线通信技术的特点,最后对ZigBee无线传感器网络技术在工业自动化监测及其他方面的应用进行了分析.  相似文献   

9.
This paper focuses on performance evaluation of wireless networked control system (NCS) via IEEE 802.15.4 with time-triggered contention-based carrier sensing multiple access with collision (CSMA/CA) algorithm to satisfy the industrial quality-of-service (QoS). Although the IEEE 802.15.4 is considered to a promising protocol for wireless NCS, its performance is not stable and its delay is not bounded under heavy traffic because its medium access control (MAC) is based on the contention-based CSMA/CA scheme. As an alternative approach to avoid these limitations, this paper presents a time-triggered CSMA/CA algorithm for IEEE 802.15.4 non-beacon mode that relies on a time division multiplexing access (TDMA) method. The time-triggered CSMA/CA algorithm for IEEE 802.15.4 non-beacon mode was implemented an experimental wireless NCS, and its control performance was compared with conventional CSMA/CA algorithm. Based on the experimental results, the time-triggered CSMA/CA algorithm is a feasible alternative for wireless NCS.  相似文献   

10.
传统高校实验室设备管理采用人工方式管理与登记,需要投入大量的精力且管理效果不理想。提出基于CC2530无线传感器网络的实验室仪器设备管理系统,该系统由中央管理计算机、无线传感器传输网络、仪器设备传感节点三部分组成。实验结果表明,该系统具有监控实时、资产数据准确、可靠性高、大量节省人力等优点。  相似文献   

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