测控通信网管系统中故障监测模块的设计与实现

针对测控通信网的特殊设备和环境,设计了综合网络管理系统的总体结构,并着重分析了故障监测模块。故障监测采用SNMP网络管理体系中的告警引导轮询方法实现,既保证了故障的完全检测,又减轻了网络负担。     

天津港模块局电源设备远端监控的实现

介绍了对天津港有线通信网C模块局供电系统实施远程监控的技术改造方案和步骤。     

刍议信息通信网络告警数据的多维度分析方法

信息通信网的运行故障时有发生,要确保其运行安全,首先要做好网络维护工作,通过网络告警分析和处理故障.告警数据应采用多维度的分析方法,以构建层次化的网络告警管理体系,提供多维度的,有效的信息通信网安全防护措施.     

提升骨干通信网动环运行监视水平

通信站动力环境系统是站内通信设备健康运行的基础,加强通信站动环系统的运行监视,对及时发现隐患,提高通信设备运行可靠性有至关重要作用.为解决新疆公司骨干通信节点的动环监视问题,新疆公司系统性开展通信站动环系统改造提升工作.完成全疆220千伏及以上变电站的动环系统改造提升工作,实现骨干通信节点动环系统的全省集中监视,全面提升新疆公司骨干通信网运行监视水平,为一二三级骨干通信网的可靠运行打下坚实的基础.     

电力通信网省地集约化监控运行支撑系统架构及关键技术

为支撑电力通信网省地集约化监控运行工作，对已有的技术支撑系统进行优化升级，提出了以中调通信调度台为信息中枢的支撑系统架构，并研发了监视、控制和资源调度方面的关键技术。成果在南方区域 5 省区电网广泛应用，结果表明电力通信网省地集约化监控模式运转效率明显提高，通信网安全运行水平显著提升，为电网安全稳定运行和公司数字化转型提供了更加可靠优质的通信支撑。     

传输网集中监控的模块化管理

我国通信事业飞速发展,新技术、新设备大量投入使用,形成了错综复杂的全国长途通信网和局域通信网。为保证现代通信网的正常运行,传输网的集中监控管理势在必行,它将是通信网运行,维护和管理实现自动化、现代化的重要手段。 在传输网络维护管理中,监控系统可监视各传输设备的工作状态,收集各种告警信息,并向上层监控系统提供监控数据,执行上层系统的各种控制命令等。     

新闻

产业动态中国海监卫星通信网建成随着中国海监卫星通信网地面站(上海)近日通过验收并正式投入运行,中国海监卫星通信网正式建设完成,中国海监自此有了自己的"千里眼"和"顺风耳"。笔者近日从中国国家海洋局东海分局了解到,中国海监卫星通信网的建成,使得今后海监船舶监视到如赤潮灾害、浒苔     

铁路数据通信网安全技术及其发展

铁路数据通信网已完成基础设施建设,其承载涉及GSM-R系统、综合视频监控、旅服信息系统、铁路电报系统、变电所数据采集与监视控制系统、视频会议系统、应急通信系统、动车组运行故障动态检测系统等十余种业务.既有网络安全手段匮乏,本文从终端、准入、有线、无线、审计、流量追查、安全管理等几方面研究补强方案,并对未来铁路数据通信网网络安全运维的发展浅做展望.     

电力通信网管理中若干关键问题的探讨

1 电力通信网的管理现状分析 电力通信网是典型的多专业、多厂商、多制式的异构型网络,涵盖传输、交换、数据、视频、同步等各种类型的通信网,网络结构非常复杂。由于电力通信网的规模较小,一般采用统计管理维护的方式进行网络维护。早期的电力通信设备功能单一,智能化水平不高,自动化管理表现为监控系统,具有监视通信设备运行状态,实时通告设备告警,运行异常信息,远程实时控制设备的主备切换等功能。     

基于PSO的SURF IA选星优化研究

机场场面情景意识显示和告警(Enhanced Traffic Situational Awareness on the Airport Surface with Indications and Alerts, SURF IA)作为广播式自动相关监视(Automatic Dependent Surveillance-Broadcast IN, ADS-B IN)下的一种监视应用，可以使航空器在机场运行时的安全和效率大大提高。以北斗卫星导航系统(BDS)/GPS双系统作为ADS-B IN的数据源，在利用所有可见卫星达到SURF IA运行的性能要求的基础上，为了减少可见卫星的使用数量，降低工作负荷，采用了粒子群算法(Particle Swarm Optimization, PSO)对导航卫星进行筛选，使得采用更少的卫星运行满足SURF IA的要求。仿真结果表明，经过PSO筛选后，可以以更少的卫星满足SURF IA运行最低监视性能要求，提高了机场场面运行监视性能。     

电视发射台多工器温度实时监测系统研究

为了实现电视发射台多工器温度监测的自动报警,设计了温度实时监测与报警系统.监测终端根据需要部署在多工器和硬馈的任意点实时采集温度,经误差分析处理后,通过nRF2401模块发送至管理主机的接收模块.管理主机能够实时动态地显示温度曲线、数据备份、系统设置、短信提醒和数据统计分析等,系统对电视发射系统的可靠稳定运营具有重要意义.     

基于PyQt无线传感器网络监控软件开发

将无线传感器网络(WSN)应用于战场感知等军事领域的研究已经广泛展开。无线传感器网络系统架构包括无线传感器网络、SINK节点和PC端监控软件。为了方便用户了解网络状态和管理网络,使用PyQt设计与实现了无线传感器网络PC端监控软件,PyQt是结合了Qt的C++跨平台程序框架和Python的踌平台解释性脚本语言。对此监控软件进行模块化独立设计,各子程序模块不集成于主程序模块,使程序的设计操作简单化。     

基于列车监测网络设备的射频功放模块设计

列车关键设备及行车状态的无线实时监测是列车安全运行的有效技术保障,而如何延长无线监测节点通信距离、增强通信可靠性成为研究重点。本文提出适用于列车监测特殊环境的射频功放模块设计方法,采用集成化芯片RF5110G避免内部干扰,通过滤波电路和阻抗匹配优化电路板设计,所设计的功放模块很好地解决了列车特殊环境导致的信号衰减问题,增强了监测网络节点数据传输可靠性,为列车监测、维护提供了可行的方法。     

Semiconductor‐Type MEMS Gas Sensor for Real‐Time Environmental Monitoring Applications

Low power consuming and highly responsive semiconductor‐type microelectromechanical systems (MEMS) gas sensors are fabricated for real‐time environmental monitoring applications. This subsystem is developed using a gas sensor module, a Bluetooth module, and a personal digital assistant (PDA) phone. The gas sensor module consists of a NO₂ or CO gas sensor and signal processing chips. The MEMS gas sensor is composed of a microheater, a sensing electrode, and sensing material. Metal oxide nanopowder is drop‐coated onto a substrate using a microheater and integrated into the gas sensor module. The change in resistance of the metal oxide nanopowder from exposure to oxidizing or deoxidizing gases is utilized as the principle mechanism of this gas sensor operation. The variation detected in the gas sensor module is transferred to the PDA phone by way of the Bluetooth module.     

基于MSP430的特种车辆云监控系统

本文设计了一套基于MSP430的特种车辆云监控系统,由供电模块、MSP430主处理器模块、无线通信模块、监控模块、存储模块、上位机管理系统等组成,针对目前的监控规划系统主要只适用于普通车辆,对特种车辆的监控仍然处于缓慢发展状态的背景下,本软件以特种车辆为主要中心设计,通过与交管部门的协同合作以及由硬件监控模块收集车辆运行状态信息,由MSP430主处理器处理数据信息,各个硬件模块之间通过无线通信实现数据的传递,以软件平台展示出实时监控特种车辆的运行状态和后期查询车辆的运行轨迹,同时可以清晰呈现对特种车辆规划好的行驶路线,从而能够有效全面地监控特种车辆,查询管理特种车辆的规范作业,提高特种车辆的道路通行效率,减小路段事故发生率。     

20 Gbit/s, 1.55 μm strained-InGaAsP MQW modulator integrated DFBlaser module

The high-speed (20 Gbit/s) and highly efficient (2 V peak to peak for a 22 dB on/off ratio) operation of an MQW integrated electroabsorption modulator/DFB laser module is demonstrated. Output power from the module is over +3 dBm in the pigtailed singlemode fibre. To the authors' knowledge, this is the first report of 20 Gbit/s operation with a monolithically integrated light source     

Design of DSP-based Embedded Video Remote Monitoring System

Presented is a scheme of an embedded video remote monitoring system based on TMS320DM642. Using DM642 as the data processing core, the remote monitoring system is composed of video acquisition module, video processing module and communication module, which gives an implementation of class/mini driver module in DSP/BIOS integrated developing environment and also a common task module in application layer is achieved. The system realizes the entire functions of the analog video signal acquisition, H.264 video ...     

基于STM32的农村智能配电网监控终端设计

针对我国农村电网配电台区自动化程度较低,监控方式落后,数据采集困难等特点,本文设计了基于GPRS通信的智能配电监控终端。该终端采用STM32为微控制器,以AD7606为核心的电力信息采集模块,并集成了红外线模块、RS485通信模块、键盘输入及LED显示模块等,通过远程通信与主站服务器相连,实现了对农村配电台区的远程测量和控制,大大提高了农村电网的智能化程度。该装置设计成本低,监控效果好,适合在广大农村推广。     

Development of wireless brain computer interface with embedded multitask scheduling and its application on real-time driver's drowsiness detection and warning

Biomedical signal monitoring systems have been rapidly advanced with electronic and information technologies in recent years. However, most of the existing physiological signal monitoring systems can only record the signals without the capability of automatic analysis. In this paper, we proposed a novel brain-computer interface (BCI) system that can acquire and analyze electroencephalogram (EEG) signals in real-time to monitor human physiological as well as cognitive states, and, in turn, provide warning signals to the users when needed. The BCI system consists of a four-channel biosignal acquisition/amplification module, a wireless transmission module, a dual-core signal processing unit, and a host system for display and storage. The embedded dual-core processing system with multitask scheduling capability was proposed to acquire and process the input EEG signals in real time. In addition, the wireless transmission module, which eliminates the inconvenience of wiring, can be switched between radio frequency (RF) and Bluetooth according to the transmission distance. Finally, the real-time EEG-based drowsiness monitoring and warning algorithms were implemented and integrated into the system to close the loop of the BCI system. The practical online testing demonstrates the feasibility of using the proposed system with the ability of real-time processing, automatic analysis, and online warning feedback in real-world operation and living environments.     

Reconfigurable Optical Add‐Drop Multiplexer Using a Polymer Integrated Photonic Lightwave Circuit

We have developed a fully functional reconfigurable optical add‐drop multiplexer (ROADM) switch module using a polymer integrated photonic lightwave circuit technology. The polymer variable optical attenuator (VOA) array and digital optical switch array are integrated into one polymer PLC chip and packaged to form a 10‐channel VOA integrated optical switch module. Four of these optical switch modules are used in the ROADM switch module to execute 40‐channel switching and power equalization. As a wavelength division multiplexer (WDM) filter device, two C‐band 40‐channel athermal arrayed waveguide grating WDMs are used in the ROADM module. Optical power monitoring of each channel is carried out using a 5% tap PD. A controller and firmware having the functions of a 40‐channel switch and VOA control, optical power monitoring, as well as TEC temperature control, and data communication interfaces are also developed in this study.