Monitoring Subsystem Research Articles

A health management system for marine cell group

Storage battery plays an important role in the submarine. However, mechanism of its performance deterioration is so complex for the crew to master. A health management system for marine storage batteries is presented in the paper, so that scientific maintenance can be adopted to assure the working reliability of the battery. The system consists of an on-line monitoring subsystem and a performance prediction subsystem. In order to complete the key task of performance prediction, an intelligent forecasting model based on support vector machine is built, which can automatically find out the rule of performance deterioration from historical monitoring data. Validity of the performance prediction has been proved by testing results.

IETM centered intelligent maintenance system integrating fuzzy semantic inference and data fusion

This paper presents a novel interactive electronic technical manual (IETM) centered intelligent maintenance system, which integrates diagnosis strategies of experience-based manual interpretation, rule-based fuzzy semantic inference and condition-based data fusion. Firstly, initial judgment is tried by onsite maintainer; otherwise rule-based fuzzy semantic inference is proposed on the designed IETM platform for rapid diagnosis using portable maintenance aid (PMA). For condition monitoring subsystems, signals can be collected and download to ground station via PMA for enhanced diagnosis using advanced classifiers and data fusion techniques. The combined diagnostic strategies are employed to trigger maintenance guidance and relevant works such as spare parts management etc. The proposed scheme was evaluated by two experiments of fault diagnosis for electric multiple units (EMU) trains. Experiment results show that intelligent, convenient, accurate and flexible diagnosis advantages can be obtained, which are benefit to maintenance reality.

Implementation of AHP-based reliability allocation for control and monitoring subsystem

Reliability Allocation (RA) is a method for apportionment of reliability values amongst various subsystems and components to achieve a given system reliability target at design stage. RA methods are based on experts' reliability weighting for each subsystem, which is inaccurate for a practical reliability allocation. In this paper, we have proposed a method in which the Analytic Hierarchy Process (AHP) is used as a tool for reliability allocation. Using this technique, we are able to consider all criteria which have effect on reliability. Moreover, by reducing complex decisions to a series of pairwise comparisons, and then synthesising the results, the AHP helps to capture both subjective and objective aspects of a decision and reduce the bias in the decision-making process. The proposed algorithm has been implemented on the control and monitoring subsystem of typical communication satellite payload and the results of the evaluation indicate the efficiency of this method.

Implementation of AHP-based reliability allocation for control and monitoring subsystem

Implementation of AHP-based reliability allocation for control and monitoring subsystem

Monitoring activities of satellite data processing services in real-time with SDDS Live Monitor

This work describes Live Monitor, the monitoring subsystem of SDDS - an automated system for space experiment data processing, storage, and distribution created at SINP MSU. Live Monitor allows operators and developers of satellite data centers to identify errors occurred in data processing quickly and to prevent further consequences caused by the errors. All activities of the whole data processing cycle are illustrated via a web interface in real-time. Notification messages are delivered to responsible people via emails and Telegram messenger service. The flexible monitoring mechanism implemented in Live Monitor allows us to dynamically change and control events being shown on the web interface on our demands. Physicists, whose space weather analysis models are functioning upon satellite data provided by SDDS, can use the developed RESTful API to monitor their own events and deliver customized notification messages by their needs.

Geoinformation support of cartographic-space monitoring of Siberia’s Arctic zone

A rationale is provided for the need and current importance of establishing a cartographic-space monitoring of Siberia’s Arctic zone in conditions of an increased interest in the exploitation of the region’s natural resource wealth and an aggravation of the geopolitical situation. We examine the principles of cartographic-space monitoring as a system for real-time acquisition, processing, visual display and supply (to users) of geospace information on natural and anthropogenic processes and phenomena. The primary goal of monitoring is defined as well as its particular objectives, such as the promotion of geoinformation services, training and professional improvement of specialists in remotely sensed data processing, digital cartography and geoinformation technologies, etc. We developed a conceptual model for geoinformation support of cartographic-space monitoring, based on the methodology of system analysis. We determined the sources and the composition of geospace information as well as the main requirements on it. The composition, purpose, structure and characteristic features of the main monitoring units and subsystems are presented and discussed, on the basis of the geoinformation portal that provides the users with the systems of base servers intended for acquisition, generation, updating and visualization of geospace information and metadata as well as for data control: loading, search, interactive editing, and unloading. We singled out three units of the system for geoinformation support of cartographic-space monitoring: the information unit, the geospace data processing unit, and the unit of access to information resources.

Overview of data acquisition and central control system of steady state superconducting Tokamak (SST-1)

Steady State Superconducting Tokamak (SST-1) has been commissioned successfully and has been carrying out limiter assisted ohmic plasma experiments since the beginning of 2014 achieving a maximum plasma current of 75kA at a central field of 1.5T and the plasma duration ∼500ms. In near future, SST-1 looks forward to carrying out elongated plasma experiments and stretching plasma pulses beyond 1s. The data acquisition and central control system (CCS) for SST-1 are distributed, modular, hierarchical and scalable in nature The CCS has been indigenously designed, developed, implemented, tested and validated for the operation of SST-1. The CCS has been built using well proven technologies like Redhat Linux, vxWorks RTOS for deterministic control, FPGA based hardware implementation, Ethernet, fiber optics backbone for network, DSP for real-time computation & Reflective memory for high-speed data transfer etc.CCS in SST-1 controls & monitors various heterogeneous SST-1 subsystems dispersed in the same campus. The CCS consists of machine control system, basic plasma control system, GPS time synchronization system, storage area network (SAN) for centralize data storage, SST-1 networking system, real-time networks, SST-1 control room infrastructure and many other supportive systems. Machine Control System (MCS) is a multithreaded event driven system running on Linux based servers, where each thread of the software communicates to a unique subsystem for monitoring and control from SST-1 central control room through network programming. The CCS hardware and software architecture is capable to fulfill the present operation and control requirement of SST-1. The CCS is successfully validated in several operation campaigns of SST-1 since year 2013.The lossless PXI based data acquisition of SST-1 is capable of acquiring around 130 channels of the ranging from 10KHz to 1MHz sampling frequency and is capable to acquire the volume of 500Mbytes of data in each shot. The indigenously developed Matlab based software utility is being used to analyze the data. The complete system is also validated in several operation campaigns of SST-1 since year 2013.This paper will provide the overview of all the above mentioned subsystems of SST-1 DAQ and SST-1 CCS focusing on the design, architecture, performance, lesson learned and future upgrade plans.

THE MODEL OF ELECTRONIC EDUCATIONAL RESOURCES FOR PRIMARY SCHOOL PUPILS

The article analyzes the electronic educational resources for educational process of primary school of Ukrainian producers. It was made a conclusion that there is a lack of certain important criteria for providing the person-oriented education and their transformation to the teachers’ convenient tools. It has been proposed and proved the model of an electronic educational resource for primary school children with a flexible subsystem of monitoring and assessment, as well as an electronic class register that will allow to build an individual learning path for each student according to his personal abilities, achieve significant time savings for monitoring and assessment of students’ progress, maximum efficiency of a lesson.

A method of definition of life-cycle resources of electromechanical equipment

The problems of developing a diagnostic system of electromechanical equipment of mining industry are described in this article. This system is a platform for changing the strategy from periodic maintenance in the direction of predictive maintenance. The researches of different methods of malfunctions detection have been carried out and described. These researches have helped to make a conclusion that implementation of a safety diagnostic system without determination of many interdependent diagnostic parameters is not possible. The results of these researches will help to develop the system of monitoring, diagnostic and definition of life-cycle resources of electromechanical equipment. This system will able to take into account the differences of technological processes and will base on the subsystems of simulation and prediction of malfunctions. In addition, development of a subsystem of monitoring, diagnostic and definition of life-cycle resources of electromechanical equipment has been described. This subsystem will evaluate the life-cycle resources in different periods of timeand make the machine control possible, using the information about the fault values and availability of spare parts, tools and equipment in addition.

A New, Scalable and Low Cost Multi-Channel Monitoring System for Polymer Electrolyte Fuel Cells.

In this work a new, scalable and low cost multi-channel monitoring system for Polymer Electrolyte Fuel Cells (PEFCs) has been designed, constructed and experimentally validated. This developed monitoring system performs non-intrusive voltage measurement of each individual cell of a PEFC stack and it is scalable, in the sense that it is capable to carry out measurements in stacks from 1 to 120 cells (from watts to kilowatts). The developed system comprises two main subsystems: hardware devoted to data acquisition (DAQ) and software devoted to real-time monitoring. The DAQ subsystem is based on the low-cost open-source platform Arduino and the real-time monitoring subsystem has been developed using the high-level graphical language NI LabVIEW. Such integration can be considered a novelty in scientific literature for PEFC monitoring systems. An original amplifying and multiplexing board has been designed to increase the Arduino input port availability. Data storage and real-time monitoring have been performed with an easy-to-use interface. Graphical and numerical visualization allows a continuous tracking of cell voltage. Scalability, flexibility, easy-to-use, versatility and low cost are the main features of the proposed approach. The system is described and experimental results are presented. These results demonstrate its suitability to monitor the voltage in a PEFC at cell level.

ПОДСИСТЕМА МОНИТОРИНГА ВИБРАЦИОННЫХ ВОЗДЕЙСТВИЙ НА ПРОВОДА И ТРОСЫ КОНТАКТНОЙ ПОДВЕСКИ

ПОДСИСТЕМА МОНИТОРИНГА ВИБРАЦИОННЫХ ВОЗДЕЙСТВИЙ НА ПРОВОДА И ТРОСЫ КОНТАКТНОЙ ПОДВЕСКИ

Implementation of Textile Air Conditioning Intelligent Monitoring System Based on Internet of Things

The traditional textile enterprise air conditioning system has deficiency such as temperature and humidity adjusting by manual work, low degree of automation, information management relative lagging and large error. According to the information management needs of modern textile, this paper design temperature and humidity monitoring system based on internet of things. The system is composed of three parts of remote monitoring subsystem, database subsystem and local monitoring subsystem. The system uses CC-LINK field bus, GPRS communication and computer network, and can control data remotely and on site. Combined with the characteristics of textile temperature and humidity, humidity priority control strategy is presented, and adaptive fuzzy-PID algorithm is adopted to tune the PID parameters on line. The results show that, the system dates transfer stability, temperature and humidity can be centralized and remote control, improving the level of enterprise information management, saving energy and reducing consumption.

Developing a power monitoring and protection system for the junction boxes of an experimental seafloor observatory network

A power monitoring and protection system based on an embedded processor was designed for the junction boxes (JBs) of an experimental seafloor observatory network in China. The system exhibits high reliability, fast response, and high real-time performance. A two-step power management method which uses metal-oxide-semiconductor field-effect transistors (MOSFETs) and a mechanical contactor in series was adopted to generate a reliable power switch, to limit surge currents and to facilitate automatic protection. Grounding fault diagnosis and environmental monitoring were conducted by designing a ground- ing fault detection circuit and by using selected sensors, respectively. The data collected from the JBs must be time-stamped for analysis and for correlation with other events and data. A highly precise system time, which is necessary for synchronizing the times within and across nodes, was generated through the IEEE 1588 (precision clock synchronization protocol for networked measurement and control systems) time synchronization method. In this method, time packets were exchanged between the grandmaster clock at the shore station and the slave clock module of the system. All the sections were verified individually in the laboratory prior to a sea trial. Finally, a subsystem for power monitoring and protection was integrated into the complete node system, installed in a frame, and deployed in the South China Sea. Results of the laboratory and sea trial experiments demonstrated that the developed system was effective, stable, reliable, and suitable for continuous deep-sea operation.

Real-time dissemination of air quality information using data streams and Web technologies: linking air quality to health risks in urban areas.

This article presents a new, original application of modern information and communication technology to provide effective real-time dissemination of air quality information and related health risks to the general public. Our on-line subsystem for urban real-time air quality monitoring is a crucial component of a more comprehensive integrated information system, which has been developed by the Institute for Medical Research and Occupational Health. It relies on a StreamInsight data stream management system and service-oriented architecture to process data streamed from seven monitoring stations across Zagreb. Parameters that are monitored include gases (NO, NO2, CO, O3, H2S, SO2, benzene, NH3), particulate matter (PM10 and PM2.5), and meteorological data (wind speed and direction, temperature and pressure). Streamed data are processed in real-time using complex continuous queries. They first go through automated validation, then hourly air quality index is calculated for every station, and a report sent to the Croatian Environment Agency. If the parameter values exceed the corresponding regulation limits for three consecutive hours, the web service generates an alert for population groups at risk. Coupled with the Common Air Quality Index model, our web application brings air pollution information closer to the general population and raises awareness about environmental and health issues. Soon we intend to expand the service to a mobile application that is being developed.

Agent-based monitoring service for management of disruptive events in supply chains

Schedules of supply chains are generated with buffers to absorb the effect of disruptive events that could occur during their execution. Schedules can be systematically repaired through specific modifications within buffers by using appropriate decision models that consider the distributed nature of a supply chain. To this aim, information of disruptive events at occurrence or in advance allows decision models to make better decisions. To detect and predict disruptive events along a schedule execution, a service-oriented monitoring subsystem that uses a reference model for defining monitoring models was proposed. This subsystem offers services for collecting execution data of a schedule and environment data, and assessing them to detect/anticipate disruptive events. Because of the distributed nature and the complexity of these services functionalities, this paper presents an agent-based approach for their implementation. This technology allows dealing with supply chain monitoring by structuring monitoring subsystem functionalities as a set of autonomous entities. These entities are able to perform tailored plans created at execution time to concurrently monitor different schedules. A case study is described to try out the implemented prototype system.

A Perimeter Intrusion Detection System Based on Sensor Network for Airport Application

Since the Security Infrastructure Construction Standard forCivil Aviation Transportation Airport (MH/T 7003-2008) revised by Civil Aviation Administration of China in 2008, more and more technologies have been applied in the airport security to meet the standard requirements. With the advent of internet of things era, the things interconnection and the coordination sensation of sensor network technology provide a new technical means for airport security. A perimeter intrusion detection system (PIDS) based on sensor network is proposed and designed for safeguarding airport flight area from illegal intrusion. The PIDS consists of a front-end detection sub-system, a control center sub-system, a network transmission sub-system, a power supply sub-system, an intelligent video sub-system , a video monitor sub-system, a combination meteorological sub-system and a lighting and sound alarm sub-system.It can accurately identify the type of intrusion, locate the intrusion target, and reduce false alarms caused by environmental interference. The PIDS based on sensor network has been successfully applied in the security of Shanghai Pudong International Airport flight area.

The Data Acquisition and Software Monitoring System for 4.6 GHz LHCD

In order to achieve high parameters operation on experimental advanced superconducting tokamak in future experiments, a new 6 MW/4.6 GHz lower hybrid current drive (LHCD) system has been finished in September 2013. The new system consists of 24 klystrons, and each is able to deliver up to 250 kW power at 4.6 GHz in continuous wave mode for 1000 s. It is a challenge to develop long pulse data acquisition for the LHCD system. The PCI eXtensions for Instrumentation based digitizers are adopted as the acquisition devices and an event-callback mechanism is formulated to fulfill the long pulse data acquisition. Various kinds of the acquired data are stored in unified text file format. A MySQL relational database based file server is launched to manage the text files while providing web service. Finally, a layer based monitoring subsystem is designed and proves feasible.

Development and Research of an Integrated Platform System for Management and Control

This paper describes the current status of power communication systems, problems and solutions, proposed to build an integrated platform system for communications management and control.The integrated platform system is divided into four parts: Comprehensive Monitoring Subsystem, Resource Management Subsystem, Operation and Maintenance Management Subsystem, Security Management and Control Subsystem, which can monitor the resource, operation and maintenance, and security controls etc.This system can implement communication professional management, process management, user management, daily operation, maintenance work management standardization, process and automation; promote systematic and integrated for communication network, improve service management level and efficiency of operation and maintenance; and provide better support and protection for developing the grid and the smart grid.

Инструментальное программное обеспечение для разработки и поддержки исполнения приложений научных вычислений в кластерных системах

Мотивация: Для разработки приложений научных вычислений существует множество различных инструментов. Большинство из них ориентированы на сам процесс написания программ, но часто требуются приложения для организации процесса вычислений и поддержки командной разработки. Описана специфика разработки приложений научной направленности, сделан акцент на характерных проблемах разработки такого ПО. Классификация систем управления вычислительными задачами: Приводится классификация систем по способу организации вычислений и уровню абстракции вычислений от физического оборудования. Инструменты разработки Templet: Рассматривается инструментарий для разработки приложений, включающий в себя библиотеки параллельных вычислений, сервис запуска и отслеживания задач, подсистему мониторинга состояния кластера. Тесное взаимодействие инструментов позволяет эффективно организовать работу команды над приложением научной направленности. Решение прикладных задач при помощи инструментов Templet: Инструментарий применяется для решения практических задач в области моделирования поведения многомерных динамических систем. Показан подход, позволяющий разделить работу над приложением на системный и прикладной уровни. Заключение: Сделан вывод о возможностях применения техник проектирования и преимуществах, которые даeт использование инструментария.

Environmental impacts related to the commissioning and usage phase of an intelligent energy management system

This paper presents for the first time the results of a life cycle assessment study for an intelligent energy management system. We considered material acquisition, manufacturing, transportation, assembly, operation and maintenance stages. The results show that the assembly phase had an environmental impact of 897 Eco-indicator 99 points that was mainly due to the monitoring subsystem (87.80%). When the analysis was extended to cover the use phase, the environmental impact ranged from 1963 (useful life of 5years) to 3029 Eco-indicator 99 points (useful life of 10years). The environmental impact of the use stage was found to represent 54–70% of the total, whereas the assembly stage represented 46–30%. The maintenance phase contributed to a very small extent to the total environmental impact (less than 0.5%). In any case, the impact on resources was the largest (about 51%), whereas the human health damage category amounted to approximately 35% and the ecosystem quality damage category represented about 14% of the total impact.