Real-time Data Distribution Research Articles

EMaintenance—Information logistics for maintenance support

Today's providers of maintenance and in-service support related to modern aircraft are facing major challenges. A central problem with Maintenance, Repair and Overhaul (MRO) as well as support of aircraft and other complex technical systems, is to manage the ever-increasing information flow and system complexity. Both military and commercial operators need to reduce aircraft downtime and maintenance man hours. Increased manual information management has the opposite effect, inducing unnecessary cost and affect efficiency negatively. Organizations developing and providing maintenance support products and in-service support does also need to improve the capability to efficiently exploit the increasing amount of digital product information and design data provided together with hardware (HW) and software (SW) products from aircraft manufacturers, sub-system suppliers and Original Equipment Manufacturers (OEM). One way to increase aircraft availability and improve maintenance and support efficiency, is to speed up the turnaround time for scheduled and unscheduled maintenance. The ultimate goal is risk-based utilization and support, where true Condition-Based Maintenance (CBM) is integrated with current operational requirements and available resources in real-time. This aims at the elimination of all preventive scheduled maintenance based on fixed time intervals and execution of only corrective maintenance that has been predicted and turned into scheduled maintenance facilitated by proper support. To address the challenge of information logistics of digital product data and information within maintenance in-service support, providers need to adapt new methodologies and tools that enable full utilization of the advantages of digital product data and information in processes and business models, e.g., Service-Oriented Architecture (SOA). To implement such improved support solutions in a global-support environment, eMaintenance is seen as one important building block. eMaintenance includes monitoring, collection, recording and distribution of real-time system health data, maintenance-generated data as well as other decision and performance-support information to different stakeholders independent of organization or geographical location, 24 h a day, 7 days a week (24/7). eMaintenance has the potential to improve the management and performance of activities related to the whole maintenance process, and thereby improve the dependability, safety and Life Cycle Cost (LCC) of critical systems. This can be realized through a coordinated application of Information and Communication Technology (ICT) throughout the maintenance and support processes, thus integrating Built-in Test (BIT) systems, external tests at different maintenance echelons, technical information, diagnostics, prognostics and other sources of support information. The purpose of this paper is to present some results from a joint academic and aerospace industry research project, describing requirements and expectations that are important in a global-support environment, and also to propose some central components in an eMaintenance framework that integrates maintenance and ICT perspectives.

ATLAS computing system commissioning: real-time data processing and distribution tests

The ATLAS experiment is commissioning its computing system in preparation for LHC data. Part of this activity consists in testing the data flow from the online data acquisition to the offline processing system, and the distribution of raw and processed data to the external computing centres. A series of functional and rate tests has been performed in 2006 and 2007, allowing the optimisation of the hardware and software components of this system; the last phase of commissioning, the so-called Final Dress Rehearsal, consisting of an integration tests of all components, will take place later in 2007. This paper describes the performed tests, the problems that we encountered, and the solutions we found.

Qualitative comparison of ACE/EPAM data from different detector heads: Implications for NOAA RTSW users

The NOAA space environment center (SEC) facilitates the tracking and near real-time data distribution of interplanetary magnetic field, solar wind, and energetic particle observations from the advanced composition explorer near the Earth’s first Lagrangian point. In early 2004, the SEC switched from one set of low energy ion observations to another of a similar energy range. To assist users who now must rely upon a different set of observations, this manuscript documents the similarities and differences between the two sets of data. Although the two sets of observations are very similar most of the time, there are occasionally significant differences that users need to be aware of and must account for, especially those using data for operational purposes.

Digital networking and archiving with ACOM T.O.P.

The international DICOM 3 standard for a single patient record exchange media (CD-R) provided the necessary definition for digital recording and distribution of cardiac angiographic patient data. The medical industry developed archive and review stations that allow the replacement of the 35 mm cine film. SIEMENS launched ACOM. T.O.P. in late 1995. The benefits and technical solution are presented in this paper. Today, the solution for networked real-time image data distribution within the hospital has become reality. Further integration of hemodynamic data, connectivity of hospital information systems, easy access and distribution of such high volume data from and to remote locations is well under way. ACOM. net is used as an example for the realization of commercial products to fulfill the demands of cardiologist and hospital administrators.

Architecture of the Virtual Broadcast Studio

The fusion of digital video technology, high-speed wide-area networks, and digital file servers allows us to view the future of television broadcast studios very differently than we do today. As computer and network technologies have advanced in both sophistication and performance, our understanding about the possibilities that the application of these technologies can provide has also grown. Digital networks are no longer used simply as a mechanism for communication between computers, but are capable of transferring data fast enough to make the real-time distribution of high-quality video data to a wide audience a reality. The ability to store, access, control, and move large volumes of digital data reliably across great distances at very high speed gives us the tools with which we can build the types of services necessary to manage and run a broadcast studio. In addition, through the use of network distributed object software models, we can build studios that are very flexible and easy to change, and highly adaptable to new technologies with a minimum of effort or disruption.

Integrated support systems for electric utility operations

An overview is given of tools and systems used to support power dispatch and other duties of the typical power system operations department. The major issues faced in systems integration are identified. The path taken by one company to integrate energy management systems (EMS), workstations, desktop computers, networks, and applications is described. The architecture presented allows the distribution of real-time operations data throughout the company, from EMS to power plants to district offices, on an unprecedented scale.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

Real-time Data Processing and Distribution System of the Hakuho-Maru

Real-time Data Processing and Distribution System of the Hakuho-Maru