Boby George, Hubert Zangl, Thomas Bretterklieber, Georg Brasseur
Seat occupancy detection systems based on a capacitive or an electric field principle, developed for an automobile seat, may not work well for seats with integrated electric heating systems. A new detection method, suitable for this type of automobile seats, is presented in this paper. In the proposed scheme, the heating element is a part of the sensor system while its operation as a heating element is kept unaffected. Results obtained from a prototype system demonstrate the practical validity of the method.
XIX IMEKO World Congress
· TC18
· 2009
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Luciano Brunetti, Luca Oberto, Marco Sellone
Modern ac-dc transfer equipments can operate up to 1 GHz at least. These equipments and the related ac-voltage measurements may be attractive for calibrating high frequency power sensors in term of ac-dc transfer difference instead of effective efficiency. Furthermore, below 30 MHz, the ac-voltage standard can be also used as powerful alternative and complement to the microcalorimeter technique for the realization of the RF power standard. In the paper experimental measurements and data analysis are presented that prove the previous assertions.
XIX IMEKO World Congress
· TC4
· 2009
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Markus Haller, Wolfgang Viel, André Schäfer
High-pressure measurement technology continues to evolve and the design HBM is promoting for its series P3M pressure transducers has been strongly developed since the beginning of 2000. It involves a monolithic measuring body using foil strain gages for electro-mechanical signal conversion. This design has been tried and tested for years and even developed into the standard in high-pressure measurement technology. The monolithic design of the measuring body offers excellent measurement characteristics and is outstanding for its accuracy, ruggedness and stability. Increasing industry...
XIX IMEKO World Congress
· TC16
· 2009
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Adriana Hornikova
Design of experiments is a theory that can not be neglected in any technical education as well as in applied statistics or economics education. For longer than a year lasted a project aiming to publish a new book in Slovak language entitled Design of Experiments with SAS. This book of eleven Chapters combines theoretical knowledge in the scientific area of design and evaluation of experimental results with application of SAS® statistical software. A model of a simple strategy for design of experiments starts with description of a problem, choosing an appropriate design with responses and...
XIX IMEKO World Congress
· TC21
· 2009
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Kengo Fukuda, Koji Yoshida, Tetsuya Kinugasa, Shinsaku Fujimoto, Morihito Kamon, Yoichiro Kagawa, Toshiro Ono
Checkweigher is usually equipped with an optical device. It is used to make a trigger to set time duration to allow a product to move on weigh belt completely for sampling the weight. In this paper, a new weighing method for checkweighers is proposed which uses just signal processing without the optical device. The effectiveness of the method is shown through experiments. Also a possibility of faster estimation of weight is shown.
XIX IMEKO World Congress
· TC3
· 2009
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Aldo Terrusi, Renzo Romagnoli, Roberto Silvestro, Domenico Ianniello
This paper present a new instrument named STASI (Seismic and Accelerometers Calibration System) invented and patented by Aldo Renato Terrusi of ENEA - Italian Agency for New Technologies, Energy and Environment (patent n° RM2004A000147,3-22-2004). This paper is a brief overview on the state of the art at international level, describing and comparing the general characteristics and costs of the instruments in relation with what is currently available on the world market. The modifications on the STASI prototype were made after the I.N.RI.M.'s comments and the experimental tests performed by...
XIX IMEKO World Congress
· TC22
· 2009
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Domantas Brucas, Vytautas Giniotis
Precise geodetic instruments are very widely used in geodesy, surveying, machine engineering, etc. Testing and calibration of these instruments is quite complicated task, although it is evidently needed. In this paper we present the creation and research of accuracy of the multireference (incorporating photoelectrical angular encoder, polygon/autocollimator and the circular scale/microscope(s)) test bench designed to perform the testing and calibration of such geodetic instruments.
XIX IMEKO World Congress
· TC14
· 2009
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Salustiano Ruiz, Mª. Nieves Medina, Roberto Calvo
A laser interferometer mercury manobarometer has been designed and manufactured. It works from 1 kPa up to 130 kPa (gauge, absolute and differential modes) with line pressure up to 500 kPa. The uncertainty budget depends on the range and working mode. In absolute mode the expanded uncertainty ranges from 0.13 Pa up to 0.42 Pa.
XIX IMEKO World Congress
· TC16
· 2009
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Mª. Nieves Medina, José Ángel Robles Carbonell, Alfonso Lobo Robledo
An automatic weight handler system for weights with masses up to 1000 kg has been designed and constructed. The system can be used with different commercial top loaded weighing platforms. This designed device has been focused on improving the eccentricity behaviour as well as the complete automation of the facility. This paper describes their main technical and metrological features.
XIX IMEKO World Congress
· TC3
· 2009
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Toshiyuki Hayashi, Yoshihisa Katase, Kazunaga Ueda, Naoya Shinozaki, Hiroshi Suzawa
A loading frame structure and a piezoelectric actuator were applied to a force comparator referring to a tuning-fork-type force transducer. The gravitational force acting on the loading frame was shared between the reference transducer and another transducer under calibration. Introduction of the loading frame structure improved reproducibility of the force transducer under calibration, and the piezoelectric actuator improved force controllability in comparison with that of the previous reported force comparator. Because of the excellent linearity and small hysteresis of the reference...
XIX IMEKO World Congress
· TC3
· 2009
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