IMEKO Event Proceedings Search

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A. M. Kobosko
MONITORING SYSTEMS FOR PROTECTION AGAINST DUST EXPLOSIONS

Monitoring systems protect grain elevators against uncontrolled blasts and explosions. Many people die in fatal dust explosions every year. They cause material and building losses. In the paper I present the resultants of our experiment with monitoring system: temperature, humidity and other parameters. These systems are working with elastic temperature cables. Many parts of systems designees in intrinsic safety technique. The procedure of designing monitoring system has also been given.

Y. Itakura, H. Shinohara, N. Isoda
THERMAL ENVIRONMENT IN A MODEL HOUSE FOR THE AGED

Houses and instruments for the benefit of aged welfare have been developed as one of the solutions to this important problem of the next Century. To live in comfort and to save energy, the thermal environment in a model house for the aged has been monitored. It was made clear that floor heating and ceiling radiant cooling gave a comfortable environment to the aged due to uniform room temperature distribution and that air-conditioning cooling with a ceiling fan was energy efficient.

A. D'Orazio, A. Lay Ekuakille, F. Prudenzano
MAPPING OF REMOTE SENSING MEASUREMENTS WITH INTRINSIC RANDOM FUNCTION OF ORDER K

Implementation of mapping refered to “localized” quantities from Remote Sensing (i.e.) is based on known information processing, on a set of bi-dimensional Space coinciding normally with the same mapping. An usual representation of interested objects is “ contouring”, that allows to illustrate the curve, place of points that have the same value. This representation is obtained by using known value interpolation of quantities of interest. The widespread approaches to generate interpolating surfaces, using personal computer, through Intrinsic Random Function in Remote Sensing are considered in this work.

A. Abd-Elrahman, L. Pearlstine, S. Smith, P. Princz
USE OF SMALL FORMAT DIGITAL AERIAL IMAGES FOR CLASSIFICATION OF SATELLITE IMAGES

The process of acquiring small format aerial digital images for assessing land cover classification of Landsat Thematic Mapper (TM) satellite images is discussed. Images positional accuracy and suitability for assessing land cover classification is tested. Using an economic configuration of onboard navigation sensors, a positional accuracy of 15 m in the images center points locations can be achieved. In addition, dithered 3 band color infrared images can be used for assessing land cover classification of TM satellite images.

H. Zebedin
DISASSEMBLY - FMEA AS PART OF A PLANNING SOFTWARE OF ROBOTIZED DISASSEMBLY CELLS

Engineering for disassembly of waste products is becoming increasingly complex. Furthermore, customer expectations are growing, competition is becoming harder, legal requirements are stricter and the quality of technical products is continuously improving. FMEA is a formalised, analytical method for the systematic, consistent collation and prevention of potential sources of errors and their results, not only in Design, but also in Planning and Production and in the future especially for Disassembly in the field of Recycling. The aim of the method is timely recognition and information on sources of error, and the evaluation and reduction of their risks to a manageable level. This means that all possible faults are considered, discussed and documented. The actions require finding corrective measures and, more important, their implementation. The used Planning Software at the Institute allows a (semi-) automatic selection of disassembly cell components by manual selection of possible disassembly operations. The proposed paper outlines the main idea of this system and gives a detailed description of how to use the Disassembly FMEA with this planning system or without, when planning a robotized disassembly system.

L. Wisweh, M. Sandau
QUALITY EVALUATION OF MEASUREMENT INSTRUMENTS

At present, no standardized procedures exist for regulating the process of calculating the certainty of measurement results. Taking geometric measurement activities in the production engineering environment as an example, the presentation indicates methods of establishing mathematical parameters for statistical assessment purposes as a means of ensuring that results can be reliably compared.
When it comes to evaluating the ability of measuring instruments to permit quality standards to be reliably assessed, measuring uncertainty is an important factor. Moreover, even describing the capabilities of measuring instruments is gaining in importance. In order to consider these predominantly statistical descriptive variables with a sufficient degree of reliability, however a standardized or comparable definition is required.
The first part deals with measuring uncertainties. The second part of the contribution indicates problem areas associated with measuring instrument capabilities, together with possible solutions.

D. Shejbal, D. Matoušková
NEW TENDENCIES APPLIED IN PROCEDURAL APPROACH TOWARDS QUALITY CONTROL

In the contribution are stated new tendencies used at quality control branch today. These tendencies support production effectiveness in most general form. Upon correct and consequential application they may also help to find out critical places of the processes. Nowadays quality can not be understood just like specialisation, respectively like added value, but must be embraced like indivisible part of all processes.
In contribution is deeply described problems of management of quality cycles, PDCA cycles and shortly is shown principle of Quality Journal methodology. Mentioned tendencies are suitable for application at company management on all management levels – it means from Top management even to production process itself. Their significance grows up with more dynamic trend of quality assurance and closely contextual producer’s responsibility for product.

J. Sanchez, B. Valera, G. Ruiz
AVOIDING MATCH MARKS ON OBJETS FOR QUALITY CONTROL BY IMAGES

When facilities of images are used to control geometric quality of objets, these have to own match marks, which are reconstructed in 3D, if couples of 2D points of such marks on images are matched by a human or artificial recognition process. Particular applications may avoid match marking and human recognition, but it is necessary to locate objets with particular orientation in precise known places. On the other hand, precise location of objets into virtual reference systems, when those were located freely, is one characteristic of interest in many industrial applications. Some applications are: quick verification of quality by attributes, or navigation of robots, where marks would increase the work which is intended to avoid. This manuscript deal with mathematical possibilities, imaging techniques and computer graphics, to define position of objets and deviations of shape. Our techniques are based on the knowledge of design of objets, made with simple CAD primitives. An original methodology is used to overcome problems of occlusions or sudden discontinuities, ordinary presented in matching couples of images for stereo reconstruction.

G.B. Rossi, P. Salieri, S. Sartori
MEASUREMENT GROWTH IN A TOTAL QUALITY PERSPECTIVE

Measurement is a key decision tool for a sustainable growth. In order to cope with this goal, total quality of measurement should be pursued at all operative levels, ranging from company or laboratory, through the national and macro-regional levels, up to the international dimension. In the paper, a framework for achieving required measurement quality is proposed and discussed. For each operation level, involved subjects are identified, concerned actions are considered and integration and harmonisation is addressed.

A.S. Ribeiro, M.P. Castro, J.G. Correia
DEVELOPMENT OF SOFTWARE FOR THE CALIBRATION OF MEASURING INSTRUMENTS

This document aims at the presentation of a set of computational applications developed by a metrological laboratory in order to support the data acquisition and the data processing for different types of calibration tests, which are performed in accordance with procedures based on well-known documents, like as international standards.

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