A power-quality monitoring and assessment system for high-speed railways based on train-network-data center integration

In recent years,with the rapid development of high-speed railways(HSRs),power interruptions or disturbances in traction power supply systems have become increasingly dangerous.However,it is often impossible to detect these faults immediately through single-point monitoring or collecting data after accidents.To coordinate the power quality data of both traction power supply systems(TPSSs)and high-speed trains(HSTs),a monitoring and assessing system is proposed to access the power quality issues on HSRs.By integrating train monitoring,traction substation monitoring and data center,this monitoring system not only realizes the real-time monitoring of operational behaviors for both TPSSs and HSTs,but also conducts a comprehensive assessment of operational quality for train-network systems.Based on a large number of monitoring data,the field measurements show that this real-time monitoring system is effective for monitoring and evaluating a traction-network system.

Comprehensive evaluation method of urban air quality statistics based on environmental monitoring data and its application

Air quality monitoring is effective for timely understanding of the current air quality status of a region or city.Currently,the huge volume of environmental monitoring data,which has reasonable real-time performance,provides strong support for in-depth analysis of air pollution characteristics and causes.However,in the era of big data,to meet current demands for fine management of the atmospheric environment,it is important to explore the characteristics and causes of air pollution from multiple aspects for comprehensive and scientific evaluation of air quality.This study reviewed and summarized air quality evaluation methods on the basis of environmental monitoring data statistics during the 13th Five-Year Plan period,and evaluated the level of air pollution in the Beijing-Tianjin-Hebei region and its surrounding areas(i.e.,the“2+26”region)during the period of the three-year action plan to fight air pollution.We suggest that air quality should be comprehensively,deeply,and scientifically evaluated from the aspects of air pollution characteristics,causes,and influences of meteorological conditions and anthropogenic emissions.It is also suggested that a threeyear moving average be introduced as one of the evaluation indexes of long-term change of pollutants.Additionally,both temporal and spatial differences should be considered when removing confounding meteorological factors.

The safety parameters monitoring system for the coal mine based on CAN bus communication and intelligent data acquisition

In this paper,a monitoring and controlling system for the safety in production and environmental parameters of a small and medium-sized coal mine has been developed after analyzing the current domestic coal production and security conditions. The client computer can convert the analog signal about the safety in production and environmental parameters detected from the monitoring terminal into digital signal,and then,send the signal to the coal mine safety monitoring centre. This information can be analyzed,judged,and diagnosed by the monitoring-management-controlling software for helping the manager and technical workers to control the actual underground production and security situations. The system has many advantages including high reliability,better performance of real-time monitoring,faster data communicating and good practicability,and it can effectively prevent the occurrence of safety incidents in coal mines.

Research on Product Data Management Based on Multi-agent System

PDM (product data management) is one kind of techniques based on software and database, which integrates information and process related to products. But it is not enough to perform the complication of PDM in enterprises. Then the mechanism to harmonize all kinds of information and process is needed. The paper introduces a novel approach to implement the intelligent monitor of PDM based on MAS (multi agent system). It carries out the management of information and process by MC (monitor center). The paper first puts forward the architecture of the whole system, then defines the structure of MC and its interoperation mode.

Research on Wireless Monitoring Technology of the Well Site Environment

Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are designed to monitor the well site environment, thus preventing downhole accidents. The system uses the wireless ZigBee technology as the transmission mode, and combines the virtual instrument technology to design the upper machine interface. The test results show that the system can monitor the outdoor environment in real time. When the environmental parameters exceed the set value, the corresponding location of the LabVIEW interface will send an alarm.

Monitoring Land Use and Infrastructure Changes in Industrial Complex Using Geo-Informatics Technology in Gujarat State, India

In the present study, detailed investigations have been carried out in Petroleum, Chemicals and Petrochemical Investment Region (PCPIR) area in Vygra and Bharuch Talukas in Bharuch district of Gujarat State. Indian Remote Sensing Satellite (IRS-P6) LISS-III, LISS-IV and CARTOSAT digital data covering PCPIR area in Bharuch district for the period of January & February of 2011, 2012 and 2013 was analyzed for land use/land cover mapping and monitoring the changes in land use. Various thematic land use/land cover maps were prepared and GIS database for various thematic layers have been generated using satellite and ground based information. The results indicate that the major land use in the PCPIR area is agriculture with crop lands ranging from 61 to 63 per cent of the total area. Crop land has decreased from 64.7% during 2011 to 62.7% during 2013 in the PCPIR region. Area under plantations in PCPIR area has also decreased from 5.5% during 2011 to 5.2% during 2012. The industrial area has increased from 6.0% to 7.6% of the total area of the PCPIR region. The total built-up area (industries & village area) has increased from 7.1% during 2011 to 8.7% during 2013. Tree plantations in the area of around 42 ha were carried out by GIDC during 2012 and 2013 to increase the green cover in the PCPIR area.

基于红外成像技术的城乡局部环境监测与分析研究

结合红外探测成像技术在复杂环境监测中的独特优势,研制了基于连续变焦中波红外成像技术的城乡局部环境监测系统,对城乡局部地区燃煤情况开展实时监测,并完成数据处理分析,为研究城乡地区燃煤趋势和特点、实施监控管理提供有力技术和数据支撑。经过在某市城乡结合地区开展的实地监测试验验证,证明该系统运行稳定、成像清晰,可实现对燃煤地区全局和重点位置的全天候在线监测,数据处理准确有效,该系统具有良好的工程应用价值。

基于高通量监测数据的PMF源解析数据输入量研究

为探究数据输入量的变化对源解析结果的影响,以上海某工业区的大气重金属高通量监测数据为例,按不同数据量将监测数据分别输入至正定矩阵因子分解(Positive Matrix Factorization, PMF)模型中,通过考察模型中Q理论值(Qtheo)与Q计算值(Qtrue)的接近程度、源分类以及源贡献与研究区污染源分布特点的吻合情况,分析数据输入量对源解析结果的影响。结果显示:该区域大气重金属污染受工业生产主导(64.44%),其次是扬尘(19.60%)和交通运输(15.96%)。通过对数据量的考察,发现输入量为60~120时能够得出研究区域的污染源数量与贡献率,但考虑到测试成本、获取数据的时间,认为输入量为60~80时,也能得出合理的源解析结果。短期高通量的分钟级数据集,有益于PMF模型输出高精密度、高时效性的源解析结果,是解决应急污染监控的最佳手段。

基于多传感数据融合的室内空间适老化环境监测系统设计

针对当前多传感数据融合算法性能不够理想导致室内空间适老化环境监测效果较差的问题,提出一种改进的多传感数据融合算法。提出一种变长数据融合算法(VLDFA)来消除冗余数据,对蜻蜓优化算法(DA)进行改进,结合改进DA和改进BP神经网络(BPNN),构建多传感数据融合模型。结果显示,该模型的精度超过98%。在温度误差与湿度误差监测比较中,所提出的模型的温度误差平均值为0.34℃,优于另外2种模型,表明该模型的多传感数据融合效果较为良好,能够很好地调整老年人居住环境。

露天矿边坡稳定性的层次分析-模糊综合评价耦合分析

露天煤矿台阶所构成的边坡对矿山资源生产及运输发挥着重要的作用,也承载着煤炭外运的任务,其稳定性对矿山连续生产具有重要意义。文章在边坡地质调查和监测信息分析的基础上,充分考虑边坡几何形态、地质信息、气象水文信息、现场监测信息等指标,以层次分析法确定边坡稳定性分析的指标权重,基于隶属度最大原则确定边坡稳定性状态,建立了多源信息融合的边坡层次分析-模糊综合评价模型。将该模型应用于扎哈淖尔露天煤矿北帮边坡稳定性分析中,最后基于数值模拟对模型进行了验证。研究表明,北帮边坡基本稳定,基于数值模拟得出扎哈淖尔露天煤矿北帮边坡滑移面安全系数为1.121,模型结果与数值模拟结果所得到的边坡稳定性状态吻合度较好,验证了模型的有效性。该模型可以充分考虑多重信息对边坡稳定性分析的贡献,从而更全面准确分析边坡稳定性。

面向畜禽舍温度监测数据融合算法改进研究

在现代化大型智能畜禽养殖中,由于畜禽舍内温度分布不均匀、传感器采集数据效率低下等原因,无法全面、准确及时反映畜禽舍内温度变化情况。为提高畜禽养殖温度监测系统的性能,提出一种分层无线传感器网络(WSN)实时融合策略。该策略设计的无线传感器网络分为两层,首先将底层传感器采集的温度数据利用改进的无迹卡尔曼滤波器(IUKF)进行预处理,然后融合中心利用改进蜣螂算法优化核极限学习机(IDBO-KELM)对预处理后的数据进行实时融合。试验结果表明,在数据预处理方面改进的无迹卡尔曼滤波器能够有效抑制畜禽舍内噪声干扰,克服采集数据出现异常和发散现象;在多传感器数据融合方面本文建立的IDBO-KELM算法其训练集与测试集准确率分别是99.15%和98.12%,相较于原始算法准确率提升6.98%,数据融合用时3.36 s,保证禽畜舍内温度监测的效率和准确性,同时减少运算时间。

烟草物流中心数字化车间监控系统研究

针对烟草物流自动化车间生产过程监控不足导致车间生产效率不高、管控难度大的问题,研究了一种面向生产过程的可视化监控方法,该方法从实体设备、车间作业流程等多方面构建具有多层级映射规则的数字孪生车间功能模型,在此基础上,建立孪生数据映射逻辑模型,搭建基于S7协议的实时数据采集传输架构,驱动孪生模型同步运行,设计并开发了数字化车间监控系统。最后通过实例验证,表明此系统能够有效集成、融合车间生产数据,实现对车间作业全流程的有效监控。

基于电力数据中台的行为审计工具建设

目前电力数据中台围绕数据的安全使用,启用了数据库相关的审计功能,但是仍缺乏有效技术手段对应用层及数据使用者的风险行为进行自动化监测。为提升数据安全保障能力,本文提出建设数据中台行为审计工具,有效保障电力系统数据规范、数据安全;通过智能化手段能够实现电力系统数据异常访问行为分析和数据安全风险管控,自动识别数据异常访问、异常用户行为及数据安全风险隐患,辅助数据安全防护工作,防范因电力系统数据异常操作或内部泄漏造成的数据安全事件,实现数据安全风险可查、可控、可预警;对电力系统行为人的数据使用行为进行分析与画像,识别用户操作行为,对用户行为进行审计;实现电力数据流转动态监测、数据安全风险源头定位;通过电力数据安全风险实时监测、溯源核查、态势感知、精准定位、快速响应,全面提升电力数据安全事件的事前、事中、事后的技术管理水平。

市域铁路调度中心级路网综合监控系统设计

文章研究了市域铁路调度中心级路网综合监控系统设计,在明确市域铁路特点以及调度功能需求的基础上,从系统总体定位、系统设计原则、系统功能设计、系统主要构成、软硬件设计等方面出发,分析了综合监控系统设计要点,有利于减少路网运行风险,提高线路资源的集中监控和整合利用水平,推动市域铁路实现更高质量的发展。

基于电力大数据与环保大数据融合的数字化多元环境监控方法探析

随着工业化和信息化的快速发展,电力与环保成为现代社会的两个重要支柱。在这两个领域中,大量的数据每天都在产生,而这些数据包含着巨大的潜在价值和应用空间。如何从这些庞大的数据中提取有用信息,并将其转化为有益的决策和策略,已经成为当今科技和产业界面临的重要挑战。而电力与环保的数据融合,为两个领域的发展提供了新的视角和机遇。本文旨在探讨电力与环保领域大数据的融合技术和方法,以及如何通过这些技术和方法为电力供应和环境监测提供有效的支持和辅助。

海洋牧场数据分析平台设计与实现

为满足智慧海洋牧场建设需求,本文设计并实现了一个海洋牧场数据分析平台。该平台基于Vue、SpringBoot、MinIO等技术,通过与海洋牧场数据采集系统深度对接和集成融合,具有海洋牧场产业链分析、生态环境预警监测、动力灾害预警监测等多个专题模块。测试结果表明,该平台具有多模态数据分析功能和良好的性能,能够提供优质高效的数据分析服务。

基于监测数据的基坑工程安全评判

基坑工程安全主要体现在基坑支护体系本身的安全以及基坑周边环境的安全,而监测数据可以清晰地反映出基坑支护体系和周边环境的变化,提供有价值的信息,以便更好地了解这些变化。监测数据是评估基坑安全性和采取必要措施的重要参考,对基坑进行全面而有效的监测显得尤为重要。在基坑安全判定过程中,利用基坑各监测项目的实时监测数据进行计算,可以有效避免对基坑安全评估的主观性。鉴于基坑工程的安全性分析是不确定性问题,不仅具有随机性,也具有模糊性,本文通过将层次分析法和模糊综合评估方法有机结合,构建了一个基于实时监测数据的基坑安全评估模型。以深圳某基坑工程施工过程中的一起监测预警事件为例,利用现场监测数据,运用AHP-模糊综合评判法对该基坑工程进行了安全评判,评判结果能够较真实地反映基坑的实际安全状态。

环境监测中异常数据识别与修复

为获取完整、可靠的环境监测数据,提出一种基于GeoHash算法的局部离群因子算法(GeoHash-LOF)。相较于传统的局部离群因子算法(LOF),GeoHash-LOF算法引入了地址划分和区域编码的思想,降低了算法计算量。针对识别出来的异常数据,采用基于遗传算法改进的灰色预测(GA-GM)算法进行修复,通过对灰色预测中的背景值和初值进行择优,从而提高预测值的准确度。以欧洲核能机构所提供的数据为例,将本文所提出的GeoHash-LOF算法、GA-GM算法与其他算法进行比较,结果表明本文所提出的算法异常数据识别效率更高且缺失数据修复拟合度更好。

数智化工地综合监控系统的建设

[目的]针对在地铁项目施工中,各参与方之间存在的信息沟通不及时、不顺畅、信息指令衰退等问题,有必要通过数字化、智能化手段,对综合监控系统数据集成、数据存储、数据传递等方面进行改进,建设数智化工地综合监控系统。[方法]广州市轨道交通3号线东延段工程及同步实施工程总承包项目数智化工地综合监控系统的建设为研究对象,梳理了地铁工程总承包模式下的建设内容及整体架构,阐述了建设管理层、基层管理层、运行维护管理层用户类型和特点,并针对性地开展了通信网络及感知层功能场景设计,对在大数据可视化看板、图形引擎、应急指挥系统知识库管理等关键技术的创新性进行分析。[结果及结论]数智化工地综合监控系统建设体系采用“层级设计、层级管理”理念,已在广州市轨道交通3号线的东延段工程完成部署,并通过工程实践得以改进。通过数智化工地综合监控系统建设,以实现对人员、施工、工器具的安全和建造过程管理进行了有效监控,并通过关键技术研究,提升了工地综合监控系统数据集成、数据存储及数据传递并有效支撑应急处置。通过数智化工地感知系统,建立安全可控的施工环境,实现数智化工地的大数据决策与评价,对地铁建设工程综合监控系统信息化建设提供了借鉴和促进作用。

油田环保安全领域标准数据关联性监测技术研究

本论文开展油田环保安全标准关联性监测技术研究,针对油田环保安全标准相关国内外动态信息(如:标准动态、政策法规、智库报告、情报产品、热点栏目)进行油田环保安全标准领域自动化关联性监测,遵循“油田环保安全领域标准数据需求识别、油田环保安全领域标准数据源的确定依据、油田环保安全领域标准关联数据自动抓取、油田环保安全领域标准关联监测内容分析”的研究思路,利用大数据分析与知识关联技术,实现对所需监测数据基本内容的自动化统计与分析,动态可视化地展示或分析所需监测数据的内容,及时跟踪与推送油田环保安全标准前沿与热点内容,支持用户便捷了解油田环保安全标准领域最新发展动态,为开展油田环保安全领域标准知识库建设提供多元数据支撑。