Integration Between Enterprise Process Monitoring and Controlling System and Enterprise Application

The relationships and the features of integration between Enterprise ProcessMonitoring and Controlling System (EPMCS) and Enterprise Process Related Applications (EPRA) wereanalyzed. An integration architecture centered on EPMCS was presented, in which there were fourlayers to connect from EPMCS to EPRA: EPMCS, application integration layer, transport layer andEPRA, and there were four layers used to etstablish integration: presentation layer, function layer,data layer and system layer. The frameworks to connect EPMCS and EPRA were designed, thatEnterprise-Independent Model (EIM), Enterprise-Specific Model (ESM) and meta-model to describe thesetwo models were defined. The method to integrate data based on XML was designed to exchange datafrom EPMCS to EPRA according to the mapping between EIM and ESM. The approches are suitable forintegrating EPMCS and systems in Product Data Management (PDM), project management and enterprisebusiness management.

Early faults prediction of running state of electromechanical systems and reconfigurable integration of series safety monitoring systems

Fault prediction technology of running state of electromechanical systems is one of the key technologies that ensure safe and reliable operation of electromechanical equipment in health state. For multiple types of modern, high-end and key electromechanical equipment, this paper will describe the early faults prediction method for multi-type electromechanical systems, which is favorable for predicting early faults of complex electromechanical systems in non-stationary, nonlinear, variable working conditions and long-time running state; the paper shall introduce the reconfigurable integration technology of series safety monitoring systems based on which the integrated development platform of series safety monitoring systems is built. This platform can adapt to integrated R&D of series safety monitoring systems characterized by high technology, multiple species and low volume. With the help of this platform, series safety monitoring systems were developed, and the Remote Network Security Monitoring Center for Facility Groups was built. Experimental research and engineering applications show that: this new fault prediction method has realized the development trend features extraction of typical electromechanical systems, multi-information fusion, intelligent information decision-making and so on, improving the processing accuracy, relevance and applicability of information; new reconfigurable integration technologies have improved the integration level and R&D efficiency of series safety monitoring systems as well as expanded the scope of application; the series safety monitoring systems developed based on reconfigurable integration platform has already played an important role in many aspects including ensuring safety operation of equipment, stabilizing product quality, optimizing running state, saving energy consumption, reducing environmental pollution, improving working conditions, carrying out scientific maintenance, advancing equipment utilization, saving maintenance charge and enhancing the level of information management.

Research on Integration of Coal Mine Moni-toring and Control System with Field Bus Control System

According to the construction of current coal mine monitoring and control systems in China, the paper proposes three kinds of applicable schemes of integrating PLC and DCS systems with field bus technology to digitize the system and to improve the flexibility and extent of the system. Essentially, the paper introduces the integration of FCS on I/O layers. Based on a real coal mine safety-monitoring and control system applied with a CAN field bus, the major technology of system relays and extensions is discussed. We believe that one of the most applicable methods is currently replacing the connection between function-stations and field-sensors with a CAN bus on I/0 layers for system integration.

Design and implementation of an expert system for remote fault diagnosis in ship lift

In this paper an expert system for remote fault diagnosis in the ship lift was developed by analysis of the fault tree and combination with VPN. The fault tree was constructed based on the operation condition of the ship lift. The diagnosis model was constructed by hierarchical classification of the fault tree structure, and the inference mechanism was given. Logical structure of the fault diagnosis in the ship lift was proposed. The implementation of the expert system for remote fault diagnosis in the ship lift was discussed, and the expert system developed was realized on the VPN virtual network. The system was applied to the Gaobaozhou ship lift project, and it ran successfully.

On the Existence of an Optimal Control of Ship Automatic Steering Instruments

The existence of linear quadratic optimal control of ship automatic steering instruments is studied. Firstly, the sufficient conditions for the quadratic integrability of the solutions of linear second order time-variant differential equations are developed. Secondly, the optimal control form of the ship automatic steering instrument is obtained by using the dynamic programming method, which guarantees a minimal ship sway range, during long-distance navigation, by using as little energy as possible. Finally, based on the above mentioned sufficient conditions, the conditions for the realization of optimal control are obtained, which provides a foundation for choosing the weighted coefficients for optimal control in engineering.

城市智慧排水管控中多元监测体系构建研究

城市河流与排水管网污染溯源的时效性差与监测体系空间覆盖不平衡等仍是城市水环境管理的突出问题。随着无人机、物联网、水质在线监测、高精度定位等技术的发展,实现快速污染溯源的多元监测体系正逐步实现。该研究通过对中山市濠头涌区域的排水管网关键节点与河流关键断面安装分布式检测仪表,并应用无人监测船对城市河流进行地形测量、水质监测,完成了监测体系的构建和多元监测数据的获取,实现了分布式仪表与无人监测船的优势互补。此外,基于电导率与氨氮相关性系数大于0.92的结果及氨氮作为主要污染物的现状,验证了电导率作为主要水质实时监测指标的合理性。

风速可调的地空一体化风力灭火遥控机结构设计与性能分析

风力灭火遥控机作为地面灭火装备的一种创新形式,具备机动性强、远程操作、快速响应等特点,能够在复杂的火情环境中灵活作业,大大提高了灭火效率和安全性。为探讨风力灭火遥控机在应对森林和草原地表火灾地空一体化监测系统中的角色与作用,对风力灭火遥控机进行结构设计,分析旋转开合结构的安装位置和开口大小对出口风速的影响。利用Fluent软件对风力灭火筒进行流体仿真,结合Design Expert软件对仿真数据进行处理,建立了位置S和开口大小d对出口平均风速和出口最大风速的响应曲面和二次模型。结果表明,安装位置和开口大小均为出口风速的重要影响因素,当风筒入口风速设定为70 m/s、旋转开合结构开口大小为30 mm且安装在位置5处时,出口平均风速和出口最大风速达到最大,分别为97.7551 m/s和290.001 m/s。相较于开口大小,安装位置对出口平均风速和出口最大风速的影响更大,且安装位置越靠近风筒出口处风力灭火机的灭火性能越好。

船岸标一体智能航行实验系统设计与实现

针对船舶自主航行难题,设计与开发一种基于STM32微控制器的船岸标一体智能航行实验系统,包括航路标识模块、船载感知载荷模块、航行器控制模块。该系统能实现船舶在每个航路转向点前,仿真预报船舶操纵运动轨迹,使用PID控制航模操舵,以提升转向控制精度。经船舶自主航行测试,验证了船岸标一体协同控制可行性和实用性。研究结果可为新一代航运系统中船舶智能航行提供有益的参考。

主动参与惯性调频的船舶变频负载电机-电容协同控制方法

针对船舶变频负载参与系统惯性调频的难题,该文提出变频负载电容储能-电机转速协同的模型预测控制策略,实现变频负载中不同惯量资源主动响应和协同优化综合电力系统的动态频率。建立系统频率-电机转速-电容电压状态空间方程,提出电机-电容惯量响应系统频率变化的控制机理;建立考虑负载运行约束的系统频率预测模型,提出计及频率动态响应以及电机-电容最优调控性能的代价函数,并给出基于频率偏差约束的权重参数优化方法,实现变频负载的主动响应及电机-电容的协同控制。建立船舶综合电力系统RT-LAB半实物仿真模型,试验表明所提方法有效提升了电机-电容的自适应协同能力,使变频负载充分参与频率动态调节。

剖面浮标变体积油囊式浮力调节系统设计

为精准控制剖面浮标的垂向运动,提出一种可精确控制油量的变体积油囊式浮力调节系统,包含外油囊、增压油箱、密封性能良好的电磁球阀和可调节转速的液压泵等组件。采用拉线位移传感器实时采集增压油箱液面位置实现油量监控,并对外油囊体积进行高精度闭环反馈控制;设计极低泄漏量的液压系统,实现系统在待机状态下浮力保持长期稳定。为精确控制浮力调节系统,构建控制系统数学模型,引入比例积分微分(Proportional Integral Differential,PID)控制算法,并采用Simulink进行稳定性仿真。试验结果表明,系统可实现浮力精确控制,最大超调量低于1%,稳定性与响应速度均符合预期,验证了控制策略的可靠性。

基于单片机技术的无人船湿地环境监测系统设计

针对当前湿地环境监测工作耗时耗力、安全系数低、成本高和采样难度大的问题,提出基于STC89C52RC和HC-12的无人船湿地环境监测系统。系统以STC89C52RC单片机为主控单元,使用便携式移动电源供电,通过导线连接由nRF905无线通信模块、HC-12无线通信模块、电机驱动系统、舵机驱动系统、水样采集系统、全球定位系统(global position system,GPS)和水质指标监测系统等构成的湿地环境监测无人船系统硬件部分,通过串口分别连接和烧写使用C#、keil软件制作上位机程序与nRF905单片机驱动程序,实现计算机通过串口通信方式完成单片机之间的无线通信和AT指令集的收发,从而达成计算机远距离实时遥控无人船进行定点水样采集与pH、浊度、温度指标监测的目的。野外实验结果证明,系统运行稳定,且水质指标测定结果精准。

云控制水肥药械智能监控平台的设计与实现

随着我国农业现代化水平的提高,以水肥药械为核心的现代农业服务体系成为未来行业发展的方向。为此,采用B/S结构模式,使用Django框架,选用MySQL数据库,设计并实现了一种云控制水肥药械智能监控平台。平台拥有完善的机构、数据交互、用户和权限等管理功能,可实现水肥药械的数字化管理;嵌入了基于Bi-LSTM与LightGBM融合的参考作物蒸散量预测方法,可实现对作物灌溉的实时预测;增加了作物施肥计算公式以及施肥用药数据库,可为用户对肥、药的施用提供科学的参考依据。实际运行及性能测试结果表明:平台的架构和模块设计合理,功能较全面和灵活,可有效满足设施园区对于水肥药械的管理需求,推动现代化农业发展。

电厂智能输煤一体化分散控制系统的研究与应用

以电厂输煤系统为分析对象,完成该电厂输煤PLC控制系统的设计。设计输煤控制系统的主电路和PLC控制电路;在硬件设计的基础上,完成输煤PLC控制系统的程序流程功能设计;以WinCC组态软件为依托平台,开发该输煤控制系统的上位机监控系统画面,完成该火力发电厂输煤远程监控系统的组态设计;设计远程监控系统的各种图形界面和监控功能,实现对输煤系统的远程监控。

薄壁壳体构件复合加载试验及参数监测平台设计及应用

围绕复杂服役环境下某装备薄壁壳体构件失效模式不清和寿命评估困难等问题,研发复合加载试验及参数监测平台。通过静力加载装置和振动夹具组合设计的内平衡加载方式对薄壁壳体施加静力载荷,有效解决温湿振环境下力加载的解耦难题;通过多综合应力环境参数控制和监测系统集成设计,实现多应力监测和控制一体化功能。该平台能够赋予薄壁壳体构件相应的温度、湿度、力和振动环境,也能实时对温度、湿度、力、振动和应变等信号进行监测和记录,有效模拟装备更为真实的工作状态,为装备研制和考核提供有力支撑。

变电运维一体化作业风险管控的实践

随着电力系统的快速发展,变电运维一体化过程管理在保障电网安全稳定运行方面发挥着越来越重要的作用。变电运维一体化作业风险管控在电力系统中具有重要意义,本文首先探讨了变电运维的重要性,随后详细介绍了一体化作业风险管控的实践策略,包括智能监测与诊断系统的应用、标准化作业流程与培训、预防性维护与设备健康管理、危险源控制与紧急响应计划。接着分析了策略的应用效果,包括事故减少与安全性提升、运维效率提升以及成本控制与资源优化。通过研究可以更好地理解变电运维一体化作业风险管控的实践效果,为电力系统的可靠性和安全性提供有力支持。

虚拟流量计量系统和DCS系统深度融合的一体化监控平台的研究与应用

本文聚焦于油气行业中的分布式控制系统(DCS)与虚拟流量计量系统(VFM)的融合研究,DCS系统广泛用于油田、炼油厂等自动化控制,而VFM系统则专注于流量估算与优化,两系统融合能显著提升数据精度与控制效率。针对数据集成、系统复杂性、实时性、安全性等挑战,本文构建了DCS与VFM深度融合的一体化监控平台,实现实时数据共享、协同控制与综合分析。该平台通过传感器数据共享、统一通信网络、数据存储与分析平台,以及统一操作与监控界面,有效降低了硬件成本、操作复杂度,提高了实时性、可靠性和安全性。在海外某油田的应用实践表明,该平台显著提高了生产效率,降低了运营成本,增强了系统安全性与数据利用效率,为油气行业的智能化转型提供了强有力的技术支持。

船舶回转过程中的舵鳍联合MPC控制

海浪和海风会加大船舶在回转过程中产生的横倾,降低设备和人员的效率.为此,本文设计了基于干扰速度补偿的模型预测控制器来减小回转过程中产生的横倾和横摇.不同于直航状态下的联合减摇控制,针对回转过程会造成运动方程产生更大不确定性问题,采用扩张状态观测器对运动方程的变化和外部扰动进行估计,并将估计结果直接引入到模型预测控制所产生的控制量中.通过遗传算法实现控制力/力矩到舵角和鳍角执行量的最优分配.通过数值仿真和船模试验对所设计的控制策略进行了验证,结果显示,可以使船舶横倾和横摇限制在要求的安全包络之内.

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。

基于数据虚拟化模型的铁路客运站视频数据湖研究

针对当前铁路旅客服务与生产管控平台(简称:管控平台)智能视频分析应用中存在的视频接入方式不规范、智能分析模型精度低、数据传输带宽受限等问题,设计了视频数据接入及存储硬件架构,在带宽受限的情况下,实现了视频码流、设备管理信息的安全接入,满足视频数据存储应用需求;构建了基于数据虚拟化模型的铁路客运客运站视频数据湖体系架构,满足客运站智能视频分析的实时性需求;对设备配置能力进行估算,并对主要设备进行配置。文章的研究结果可为相关工程的建设、设计和实施提供参考。

小型水环境监测无人船的研究

针对常见的自动化水质监测站、人工采样监测方式存在的成本高、耗费人力、低效率等缺陷,设计一款体积小、易携带、成本较低,能应用于城市河道和水产养殖的水质监测无人船。无人船采用模块化的硬件设计,软件设计能和硬件配合使用完成设定功能,上位机界面能实时向用户显示各项数据以及发送各种指令。实验验证无人船能够有效地检测水环境的水质,提高水质监测的效率和准确性,为水环境监测和保护提供有力支持。