Aimé Lay-Ekuakille, Giuseppe Vendramin, Amerigo Trotta
Flexible and programmable components have been playing a key role in many electronic systems. Lidar systems can be improved by means of component and electronic progress, especially in data collection, acquisition and processing. The objective of present paper is to show the design of an electronic unit capable of substituting Raman lidar - based discriminator and multichannel scaler. For this experiment, a Hamamatsu H7732P-01 photomultiplier has been used.
TC19 Symposium 2007
· TC19
· 2007
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Fernando M. Janeiro, Frank Wagner, Pedro M. Ramos, Ana M. Silva
In this paper, a prototype for automatically measuring the atmospheric visibility using a digital camera is described. The dark object approach is used on the images obtained by the camera. In this method, two dark objects must first be identified in the images so that visibility can be derived using the modified Koschmieder formula. Due to inherent camera positioning shifts, the images are not always aligned which leads to an altered position of the chosen objects. Therefore, image registration algorithms are needed so that the atmospheric visibility can be automatically retrieved. The dark...
TC19 Symposium 2007
· TC19
· 2007
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Martin Lloyd
Environmental regulators must have confidence in the complete measurement sequence: from sample point to measurement report. Thus, they need to be confident not only in the measurement instruments that acquire the data but also in the data management software that processes, stores, and prepares reports. This paper describes a new data management software standard for the UK Environment Agency’s MCERTS scheme, which hitherto has only covered instruments. Our approach divides the standard into three parts: the generic quality of the software, which is not addressed here, because it concerns...
TC19 Symposium 2007
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· 2007
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Fabrizio Ciancetta, Biagio D’Apice, Carmine Landi, Alfredo Pelvio
Environmental sensors are developed and used for environmental assessment such as electromagnetic field, thermal and air environments. The specified items for the thermal environmental assessment are temperature, humidity, and air flowing rate and so on, and the items for air environmental assessment include all kinds of gas sensor. The main goal of this paper is to present an implementation of an environmental mobile sensor for distributed measurement system based on the web service approach. The proposed system is based on a freeware widely utilized technology, the Gnutella network, to...
TC19 Symposium 2007
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· 2007
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O. Postolache, P. Silva Girão, J.M. Dias Pereira
The article presents an embedded solution for the measurement of air parameters such as flow direction, flow velocity, temperature and relative humidity. The air flow velocity and direction measurement is based on a solid state sensor expressed by a set of ultrasound transmitters-receivers disposed according to the main cardinal points. 40kHz ultrasound burst signals are emitted from one cardinal point transmitter and received from the opposite cardinal point receiver whose conditioning circuit delivers a TTL pulse. The widths of the pulses obtained by the receivers are used not only to...
TC19 Symposium 2007
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· 2007
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J.M. Dias Pereira, O. Postolache, Ricardo Salgado, P. Silva Girão
Data processing of measurement data is a topic of paramount importance in every measurement system. Obviously sensors, signal conditioning and microprocessor specifications dictate important metrological characteristics of an embedded measurement system, namely: accuracy, resolution, repeatability and reliability. However, nowadays smart sensing systems and advanced signal processing techniques can improve measurement system’s performance and flexibility relaxing hardware specifications and associated cost. This paper pays particular attention to curve fitting based on Gaussian interpolation...
TC19 Symposium 2007
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· 2007
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Oleh Velychko, Tetyana Gordiyenko
Peculiarities of the expression of uncertainty estimation with correlation or covariance of input values, using parameters of correlation and covariance in international metrological and environmental guides are shown. The use of international metrological guidance of expression of measurements uncertainty with correlation or covariance of input values in development of new and reconsideration of old international environmental guides is recommended.
TC19 Symposium 2007
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· 2007
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Boubakeur Zegnini, Laurent Boudou, Juan Martinez-Vega
An optical noncontact measurement technique based on the tracking of successive positions of computerized markers has been developed which enables one to characterize the electric field induced strain response of the plane gold-metalized surfaces in thin organic insulating films. The test results demonstrate that the newly developed method is capable of detecting displacement of selected markers when the sample is subjected to the application of a dc high voltage. The field-induced mechanical strain measurements have been performed as a function of time and then analyzed with respect to the...
TC4 Symposium 2007
· TC4
· 2007
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Junya Suehiro
Dielectrophoresis (DEP) is electrokinetic motion of dielectrically polarized materials in non-uniform electric fields. DEP has been successfully applied to manipulation of nanomaterials including CNTs, metallic nanoparticles and semiconducting nanowires. Under positive DEP force, which attracts nanomaterials toward the higher field region, nanomaterials are trapped in the electrode gap and automatically establish good electrical connections between them and the external measuring circuit. This feature allows us a fast, simple and low-cost fabrication of nanomaterial-based sensors based on a...
TC4 Symposium 2007
· TC4
· 2007
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Thomas Prokosch, Jens Volkert, Dieter Kranzlmüller
The EU project "RINGrid" is a research project dealing with Remote Instrumentation in Next-generation Grids, i.e. instruments are seen as grid components and operated from remote sites. While this remote operation possibly entails trendemous benefits, several key components, such as scalable data storage or collaboration tools, are still missing for its realization. This paper outlines the process of remote instrumentation and highlights during this description those components, which are not yet fully understood or available.
TC4 Symposium 2007
· TC4
· 2007
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