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In this paper, we describe a method of modeling the global solar irradiance on a clear sky. The proposed method is based on astrological phenomena, with which we can estimate the global solar irradiance of the few days, several months, and some years. To estimate the irradiance with high accuracy, it is necessary to calculate the solar radiation outside the Earth's atmosphere taking into account the...
In medical facilities, studies of emergency measures against power failures due to natural disasters have become an interesting subject, especially those using renewable energy sources and energy-storage systems. We have developed a simulator to analyze the power grid conditions with several energy sources and batteries including commercial utility grid. For the sake of validation of the simulator,...
We have been developing a high-speed simulator and micro-grid emulator for real-time energy management system. In this paper, we describe our new fast simulation model for PV system that will allow us to simulate 24-hour data in less than 5 sec. We use this simulator to make estimations and verify our management strategies. We have proposed a hybrid DC/AC micro-grid system in our previous work. The...
This paper presents a simulation model of green energy devices, which is developed for analyzing energy balance of a micro-grid and for optimizing its management. Several renewable energy based electricity production and storage are modeled and analyzed in the making of strategies for sustainable micro-grid management. In this study, two different simulation models are described, which call a “long-term...
We have developed a versatile nurse support system. The system adapts different wireless technologies to best suite the applications and yet provides a uniform platform to build a user-friendly environment for visiting nurses, gerontological nurses, and at central hospitals. It is designed to ease the daily work of these nurses by eliminating the needs to manually record medical information into multiple...
The Consumer-Server/Logger (CSL) is the final component in the CDF Data Acquisition chain before data are archived to tape. The CSL buffers data in separate data streams, records file meta information into a database and sends a fraction of events to online processors for real time monitoring of data quality. Recently, the CSL was upgraded in order to increase the logging capacity to 80 MB/s. The...
The ATLAS trigger reduces the rate of interesting events to be recorded for off-line analysis in three successive levels from 40 MHz to about 100 kHz, about 2 kHz and about 200 Hz. The High Level Triggers and Data Acquisition System are designed to profit from commodity computing and networking components to achieve the required performance. We discuss Data Flow aspects of the design of the Second...
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