نتایج جستجو برای: thermopile
تعداد نتایج: 188 فیلتر نتایج به سال:
At the beginning of 2020 world was shocked by outbreak corona virus which infected almost all countries in world. WHO since January has declared to be a global emergency related Covid-19 virus. As preventive measure, every public facility and shop must have hand washing equipment, check body temperature before entering room so that people who high go doctor, this also applies schools prevent ne...
A planar Bi–Sb multijunction thermal converter was fabricated on the LPCVD Si3N4/SiO2/Si3N4-diaphragm, prepared by silicon bulk micromachining, which thermally isolated a bifilar Ptor NiCr-heater and the hot junctions of a Bi–Sb thermopile from the silicon substrate. The voltage responsivity, the ac–dc transfer difference, and the fluctuations of the output thermoelectric voltage and heater res...
Referring to speculations of others, in particular of M. Fourier [1] who, already in 1827, compared the Earth atmosphere with the glass of a «hothouse», John Tyndall delivered since 1861 basic experimental results about the absorption of thermal radiation by several gases [2-4]. The observation that carbon-dioxide was absorptive, in contrast to pure air, initiated the atmospheric greenhouse the...
FERMI@Elettra is a free electron-laser (FEL)-based user facility that, after two years of commissioning, started preliminary users’ dedicated runs in 2011. At variance with other FEL user facilities, FERMI@Elettra has been designed to deliver improved spectral stability and longitudinal coherence. The adopted scheme, which uses an external laser to initiate the FEL process, has been demonstrate...
A complementary metal-oxide semiconductor-compatible process was used in the design and fabrication of a suspended membrane microfluidic heat flux sensor with a thermopile for the purpose of measuring the heat flow rate. The combination of a thirty-junction gold and nickel thermoelectric sensor with an ultralow noise preamplifier, a low pass filter, and a lock-in amplifier can yield a resolutio...
Detecting and tracking people is a key capability for robots that operate in populated environments. In this paper, we used a multiple sensor fusion approach that combines three kinds of sensors in order to detect people using RGB-D vision, lasers and a thermal sensor mounted on a mobile platform. The Kinect sensor offers a rich data set at a significantly low cost, however, there are some limi...
Accurate, robust and cost-efficient measurements of diffuse horizontal irradiance (DHI) global tilted (GTI) are great interest for solar energy applications. However, the available measurement techniques exhibit at least one these shortcomings: restriction GTI to a single plane, intensive maintenance, high acquisition cost or increased deviations, especially new sites. To avoid shortcomings, we...
Referring to speculations of others, in particular of M. Fourier [1] who, already in 1827, compared the Earth atmosphere with the glass of a «hothouse», John Tyndall delivered since 1861 basic experimental results about the absorption of thermal radiation by several gases [2-4]. The observation that carbon-dioxide was absorptive, in contrast to pure air, initiated the atmospheric greenhouse the...
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