Results 211 to 220 of about 5,952 (245)
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Lightning Strike at a Grounding Device
Elektrichestvo, 2020The statistical distributions of lightning current parameters obtained from an analysis of natural lightning waveforms carried out by three research centers are considered, and it has been found from the consideration results that the extreme values of these parameters, based on which the recommendations of the relevant IEC standards were elaborated ...
Rudolf N. KARYAKIN, Viktor G. LOSEV
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Ground radiation antenna for mobile devices
2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP), 2017This paper gives a comprehensive review on ground radiation antennas. Ground radiation antennas are developed to achieve miniaturization and performance enhancement for mobile antennas. The operation concept is demonstrated first, and various techniques including wideband, multiband, high-sensitivity, multiple-input multiple-output (MIMO) and circular ...
Longyue Qu +2 more
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Night vision devices for ground environment
IEEE Aerospace and Electronic Systems Magazine, 1999The PM N-V/RSTA is procuring the Driver's Vision Enhancer (DVE) thermal imaging system for use in combat and tactical wheeled vehicles. The DVE uses uncooled forward looking infrared technology compared to the I/sup 2/ technology currently in the field.
P.S. Best +3 more
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Lab-on-Chip Devices: Gaining Ground Losing Size
ACS Nano, 2017Portable analytical devices are notably gaining relevance in the panorama of urgent testing. Such devices have the potential to play an important role as easy-to-handle tools in critical situations. Epidemic infectious disease agents (e.g., Ebola virus, Coronavirus, Zika virus) could be controlled more easily by testing travelers on-site at the country
Veronica C. Romao +5 more
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Evaluation of Ground Speed Sensing Devices under Varying Ground Surface Conditions
2005 Tampa, FL July 17-20, 2005, 2005Ground speed data is used as an input to automated control systems for application of high cost farm inputs. The benefits of accurate ground speed information are precise control of planting / spraying operations, accurate position detection, and implement performance optimization.
null Ramesh Vishwanathan +3 more
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Research on Hanging Grounding Wire Device with Integrated Electroscope and Grounding
2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2019Hanging the grounding wire during the catenary daily power outage operation is the significant link to ensure safe work. While maintaining, the electroscope must be firstly used for electricity inspection before grounding wires. Since the operation is carried out step by step, it is easy to mistake tools and there might be inconsistency between the ...
Jiajun Liu, Sidan Han
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Energy Safety and Energy Economy, 2021
We report that we have built a mathematical model of a remote monitoring module for the purpose of control grounding devices located on overhead power line poles. The invention is based on measuring grounding device resistance. Resistance measurements conducted by the said monitoring module go directly to a power company’s control room.
Vitali Akulichev +5 more
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We report that we have built a mathematical model of a remote monitoring module for the purpose of control grounding devices located on overhead power line poles. The invention is based on measuring grounding device resistance. Resistance measurements conducted by the said monitoring module go directly to a power company’s control room.
Vitali Akulichev +5 more
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4G/Multiband handheld device ground antennas
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013Promising internal handheld device ground antennas are presented. Using the ground antenna concept, the antenna element functions mainly as an exciter and can have a very small size to achieve 4G/multiband operation. In this paper, ground antenna structures for handheld devices including the use of a loop strip, a half-loop strip, a simple shorted ...
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Compact Wireless Devices with Defected-Ground Structures
2006 International Conference on Wireless and Mobile Communications (ICWMC'06), 2006In this paper are presented some investigations on micro- strip defected ground structures (DGS). It is shown that the presence of a slot in the ground plane can substantially enhance the electric coupling, or the electric part of a mixed coupling between resonators and its external feedings.
N. Militaru +4 more
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Grounding principles and practice III — Generator-neutral grounding devices
Electrical Engineering, 1945Characteristics of devices for grounding the neutrals of synchronous generators and the conditions under which the various types of devices are used and their effect on associated equipment are discussed in this article, the third in a series of five based on lectures which were sponsored by the power and industrial group of the AIEE New York Section ...
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