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EN
The technological progress of the last decades has significantly contributed to the development and innovation of several areas, such as engineering, architecture, and medicine, providing new possibilities to measure, control, simulate and assess most of the physical phenomena of the environment, and the corresponding reactions of the individuals. This has shifted the attention of researchers toward the need to understand, in depth, the mechanisms which influence the perception and well-being of humans in complex environments (e.g., cities, urban parks). In this light, it can be expected that the first-person experiences will be assumed as the new frontier of future decision-making and design processes, as they may involve representatives of local communities and groups of interest. This approach leads to a multidisciplinary integration and contamination of the scientific competencies for all research groups involved in the so-called holistic research. Overcoming the concept of noise that has dominated until the end of the last century and considering the environmental sounds as a 'resource' rather than a 'waste', with the introduction of the Soundscape approach, psychologists and sociologists have provided several tools (e.g., questionnaires, scales, tasks) to measure the perceptual, emotional, and cognitive reactions of the individuals when they are exposed to the sounds. Different multidisciplinary research groups are involved in studies that adopt, refine, or propose new investigation tools, to assess, modify and manage the sound of cities, and their effects on the satisfaction and well-being of the population. Moreover, the huge development of miniaturised and powerful hardware and software of the last decade allowed the reconstruction of audio-visual scenarios with a very high degree of realism and the possibility of interacting ecologically with the virtual environment in a fully functional immersive experience. The recent possibility to measure the physiological and neurological reactions of the individuals has opened a further road to extend the knowledge about the effects of noise and the weight of the other physical factors on the populations. A scheme of Sensory Human Experience Centres, where approaches, tools, competencies of various disciplines are integrated, is presented. These kinds of centres could represent, in future, the places where they concentrate the selection and validations of design alternatives (e.g., product, building, city and infrastructure scale) at the local and national levels.
2
EN
The authors analyses the issues inherent in implementation of a multi-sensory mobile application which uses a map as an interface for an edutainment-style city guide for tourists. Two models – the triad of tourist experiences (3E), i.e. education, entertainment, and excitement, and the hierarchy of needs of Abraham Maslow – were used as the basis for identifying what conditions should be met by such an application to encourage its use by both local residents and tourists, in equal measure. It was decided that only open source software would be used to achieve the goal of the application.
PL
W artykule zaprezentowano możliwości zastosowania obróbki ubytkowej do poprawy dokładności kształtowej i wymiarowej elementów wytwarzanych technologiami przyrostowymi. Technologie addytywne znajdują coraz szersze zastosowanie i stawiane są im coraz to wyższe wymagania związane z dokładnością wytwarzania. Niestety ograniczenia wynikające z istoty tych technologii nie pozwalają uzyskać dokładności wykonania w klasach niższych niż IT7. Dlatego zasadne jest zastosowanie dodatkowej obróbki do poprawy dokładności istotnych elementów wykonanych prototypów.
EN
The article presents the possibility of using waste machining to improve the accuracy of the shaping and dimensional elements generated incremental technologies. Additive technologies are increasingly widely used and are placed them higher requirements for precision manufacturing Unfortunately, limitations resulting from the essence of this technology does not allow you to get accuracy of the lower classes than IT7. Therefore, it is reasonable to use additional treatment to improve the accuracy of the essential elements of printed prototypes.
PL
W artykule przedstawiono ocenę wpływu grubości ścianki tulei wykonanych w technologii przyrostowej na odchyłkę walcowości oraz prostoliniowości tworzącej walca z wykorzystaniem współrzędnościowej techniki pomiarowej. Wytwarzanie prototypów z cienkimi ściankami jest uzasadnione ekonomicznie, gdyż skraca znacznie czas wydruku jak i jego koszt.
EN
The article presents an assessment of the impact of quill wall thickness made in the additive manufacturing for cylindricity deviation and the straightness of creating a cylinder with the use of coordinate measuring technique. Production of prototypes of the thin walls is economically justified because it reduces considerably the time output as well as its cost.
EN
Aim: The purpose of this article is to help designers of fire detectors with the selection of a carbon monoxide (CO) sensor for a multi-sensor fire detector. Academic work on detectors provides an abundance of material about sensors suitable for CO analysis. Each sensor has its advantages and disadvantages. Therefore, choosing a suitable sensor is quite difficult. The authors, based on their extensive experience in the development and production of devices for gas analysis and fire detectors, propose most adequate solutions. Introduction: Current devices for discovering a fire, work on the principle of detecting smoke, often incorporating a temperature sensor. However, these have many disadvantages. They do not function in a discerning way in relation to smoke (aerosols, water vapour, cooking vapour and dust are all identified as smoke). A CO fire detector is free of these shortcomings, since it is selective and reacts to CO. For this reason many perspective European norms and international standards emerged, which recommend CO analysis for detection of fires. Obviously, high concentrations of CO can occur in areas where people smoke, where heating appliances utilising solid and gaseous fuels are used, in garages and in underground car parks. Multi-Sensor Detectors with two methods of detecting fire, CO and smoke, compensate shortcomings of each method. It can be confidently stated that through a simultaneous response from both detection methods, a fire will be dealt with at an early stage of development and resources will not be sidetracked by dust, water vapour, aerosols or high concentration of CO. For detection of CO, existing standards recommend the use of electrochemical sensors. Methods: The article describes the technical parameters of the most appropriate electrochemical sensors for monitoring of CO. These are electrolytic, based on acidic electrolyte and metal oxide semiconductors, namely Nap-508 (505) and TGS2442. The principles of operation and recommended circuit connection are suitably described in the article. The sensors are specially designed for use with gas fire detectors and were tested in accordance with requirements for fire detectors. It is noted that metal-oxide sensors have the most acceptable performance characteristics, across the broadest temperature range, long period of validity and absence of aggressive substances in composite elements. Among its disadvantages is a relatively high power consumption ~ 15 mW. Conclusions: Examined prospects for the development and production of metal oxide semiconductor sensors. It is indicated that the use of micro and nanotechnology in the manufacture of sensors will solve the problem of reducing energy consumption to a level sufficient for the production of self-contained smoke detectors powered by batteries. At present, Figaro has developed a sensor TGS8410 with an average power consumption of 0.087 mW.Aim: The purpose of this article is to help designers of fire detectors with the selection of a carbon monoxide (CO) sensor for a multi-sensor fire detector. Academic work on detectors provides an abundance of material about sensors suitable for CO analysis. Each sensor has its advantages and disadvantages. Therefore, choosing a suitable sensor is quite difficult. The authors, based on their extensive experience in the development and production of devices for gas analysis and fire detectors, propose most adequate solutions. Introduction: Current devices for discovering a fire, work on the principle of detecting smoke, often incorporating a temperature sensor. However, these have many disadvantages. They do not function in a discerning way in relation to smoke (aerosols, water vapour, cooking vapour and dust are all identified as smoke). A CO fire detector is free of these shortcomings, since it is selective and reacts to CO. For this reason many perspective European norms and international standards emerged, which recommend CO analysis for detection of fires. Obviously, high concentrations of CO can occur in areas where people smoke, where heating appliances utilising solid and gaseous fuels are used, in garages and in underground car parks. Multi-Sensor Detectors with two methods of detecting fire, CO and smoke, compensate shortcomings of each method. It can be confidently stated that through a simultaneous response from both detection methods, a fire will be dealt with at an early stage of development and resources will not be sidetracked by dust, water vapour, aerosols or high concentration of CO. For detection of CO, existing standards recommend the use of electrochemical sensors. Methods: The article describes the technical parameters of the most appropriate electrochemical sensors for monitoring of CO. These are electrolytic, based on acidic electrolyte and metal oxide semiconductors, namely Nap-508 (505) and TGS2442. The principles of operation and recommended circuit connection are suitably described in the article. The sensors are specially designed for use with gas fire detectors and were tested in accordance with requirements for fire detectors. It is noted that metal-oxide sensors have the most acceptable performance characteristics, across the broadest temperature range, long period of validity and absence of aggressive substances in composite elements. Among its disadvantages is a relatively high power consumption ~ 15 mW. Conclusions: Examined prospects for the development and production of metal oxide semiconductor sensors. It is indicated that the use of micro and nanotechnology in the manufacture of sensors will solve the problem of reducing energy consumption to a level sufficient for the production of self-contained smoke detectors powered by batteries. At present, Figaro has developed a sensor TGS8410 with an average power consumption of 0.087 mW.
PL
Cel: Celem artykułu jest udzielenie wskazówek konstruktorom czujek pożarowych odnośnie wyboru czujników tlenku węgla w komorze wielosensorowej czujki pożarowej. W monografiach poświęconych tej tematyce znaleźć można wiele czujników nadających się do analizy CO. Każdy czujnik ma swoje zalety jak i wady. W związku z tym wybór odpowiedniego czujnika jest dość trudny. Autorzy, na bazie wieloletniego doświadczenia w projektowaniu i produkcji przyrządów do analizy gazowej i czujek pożarowych, zaproponowali najbardziej adekwatne rozwiązania. Wprowadzenie: Obecnie do wykrywania pożarów bardzo często wykorzystywane są czujki dymu (zwykle z czujnikiem temperatury). Mają one jednak wiele wad – nie działają w sposób selektywny na dym (rozpoznają jako dym aerozole, parę wodną, parę powstającą przy gotowaniu, kurz). Czujka pożarowa CO nie ma takich wad, ponieważ reaguje wyłącznie na CO. Dlatego powstało wiele perspektywicznych norm europejskich i standardów międzynarodowych, które do wykrywania pożarów przewidują analizę CO. Oczywiście, duże stężenia CO mogą powstać w pomieszczeniach, w których pali się papierosy, również tam gdzie znajdują się urządzenia ciepłownicze na paliwo stałe lub gazowe, w garażach i parkingach podziemnych. Wielosensorowe czujki, wykorzystujące dwie komory wykrywania pożaru – CO i dymu, rekompensują wady każdej z tych komór. Przy jednoczesnej aktywacji obu, można z pewnością stwierdzić, że mamy do czynienia z pożarem we wczesnym stadium rozwoju, a nie z kurzem, parą wodną, aerozolem lub po prostu dużym stężeniem CO. Do wykrywania CO odpowiednie nomy rekomendują użycie czujników elektrochemicznych. Metody: W artykule opisano parametry techniczne najbardziej odpowiednich do kontroli CO czujników elektrochemicznych na bazie elektrolitów kwasowych i półprzewodników tlenkowych, a dokładnie Nap-508 (505) и TGS2442. Opisano również zasady pracy i zalecane schematy połączeń. Czujniki te były opracowywane specjalnie do wykorzystania w pożarniczych czujkach gazu i przeszły wszystkie badania zgodnie z wymogami dla czujek pożarniczych. Zaznaczono, że czujniki tlenkowe mają najbardziej akceptowalne charakterystyki eksploatacyjne – najszerszy zakres temperatur, długi termin ważności, brak w składzie elementów środowiska agresywnego. Do ich wad należy względnie duże zużycie energii ~ 15 mW. Wnioski: Rozpatrzono perspektywy rozwoju technologii produkcji półprzewodnikowych czujników tlenkowych. Wskazano, że zastosowanie mikro- i nanotechnologii przy produkcji tych czujników rozwiązuje kwestię zmniejszenia zużycia energii do poziomu dostatecznego do przygotowania autonomicznych czujek pożarniczych zasilanych baterią. Już teraz firma Figaro opracowała czujkę TGS8410 za średnim zużyciem prądu 0,087 mW.
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