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Wyniki 1-2 spośród 2 dla zapytania: authorDesc:"VALENTIN DIMOV"

» Lead free electronic module test research for motion control of cars front windscreen wipers

ANELIYA MANUKOVA-MARINOVA

VALENTIN DIMOV

AVRAM LEVI

DOJCHIN STEPHANOV

There is an increased demand for complying with the environmental protection requirements not only in the modern electronic production process, but also in their out exploitation phase [1,6]. The electronic automobile industry observes the conditions set by the European Union on ecologically clean products and introduces its lead free technology production everythere, where people safety regulations permit [4]. Ecologically clean (Green)-electronic items and wares become more and more popular, but common standards objectively defining them as such have not been existing yet, so each producer creates their own criteria for this. For product validation and production process feasibility series of tests and control operations have to be performed [2]. The tests are of a general c[...] więcej»
w zeszycie ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA 2009/6

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» Embedded automatic weather station

Deyan LEVSKI

The term weather in meteorology is used to describe the momentary atmospheric conditions at a certain place. It is determined by the air temperature and relative humidity, atmospheric pressure, wind speed and direction and rainfall i.e. from the meteorological elements in their unity. The weather is dynamic and it is changing constantly. The change in one meteorological element leads to a change in almost all the other elements, thus by the constant monitoring of these elements and by predicting the tendencies of their alternation a weather forecast is being created. There are existing over 20 000 weather stations on the Earth in which significant every-day weather observations are being made. Nowadays the topics related to the climate and weather elements measurement are becoming more and more relevant. This is caused mainly by the so called “Global Warming" and the ambition of the society to start living in a sustainable world. Due to that fact, mankind has started developing new clean ways of energy harvesting with the help of renewable energy sources. The construction of these sources is very tightly connected with the climate elements and their observation, which is important for the expediency of the built machinery and equipment. Except specific scientific researches, the weather elements are of interest for the normal household family, as well as all industry branches. A very popular question arose after the tragic accident in Fukushima - “Are we in danger? Can we believe in the radioactivity information we are given?". Those subjective factors help media and subjective assessments harm the calmness and emotional condition of the population. The purpose of this article is to show a modern automatic weather station design measuring: air temperature, soil temperature, absolute atmospheric pressure, relative humidity, wind speed and direction, solar index and background gamma radioactivity level. The weather [...] więcej»
w zeszycie ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA 2011/10

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