Results 21 to 30 of about 2,478 (227)
Several Methods of Reducing Discharge Energy for Intrinsic Safety Power Supply
Meikuang Anquan, 2020 In order to reduce the discharge spark energy of the intrinsic safety power supply, several measures are proposed in this paper. When the over-current protection occurs, DC-DC or AC-DC module should be turned off as quickly as possible, and the ...
DONG Jianguo, LI Yanmin, ZHOU Xingdong, ZHANG Lei
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Scientific Reports, 2023 We have developed a radioluminescence-based survey meter for use in industries in which there is involvement in naturally occurring radioactive material (NORM), also in support of those needing to detect other weak emitters of radiation.
H. T. Zubair +13 more
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Distance measurement between bus equipment based on RS485 data frame timing
Gong-kuang zidonghua, 2021 There are a large number of online equipment working in underground coal mines that do not have positioning function and the equipment installed with wireless positioning are susceptible to electromagnetic interference, resulting in low positioning ...
BAI Sizhong1，2
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Design of novel intrinsically safe power supply with 'ia' grade
Gong-kuang zidonghua, 2017 According to working condition of mine-used power supply in coal mine underground, novel intrinsically safe power supply with 'ia' grade was designed. The power supply uses a fully enclosed AC-DC module to eliminate special flameproof enclosure, and has ...
YU Zhixue, FANG Xupeng, ZHAO Yang
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Design of intrinsically safe laser auxiliary light source for low-illumination video acquisitio
Gong-kuang zidonghua, 2019 For problems of high power consumption, large volume, close irradiation distance and poor concealment of existing auxiliary light source for low-illumination video acquisition, a design scheme of intrinsically safe laser auxiliary light source for low ...
LI Wenfeng, CAI Pengbo
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Research on transient energy suppression strategy of intrinsically safe output power supply for mine
Meikuang AnquanIn response to the requirements of GB/T 3836.4—2021 Explosive atmosphere Part 4: Equipment with protection by intrinsic safety “i” for outputting transient energy of intrinsically safe power sources based on the principle of semiconductor rapid short ...
Changna GUO
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Gong-kuang zidonghua, 2020 Most of existing models and methods for research of capacitive circuit spark discharge and high-power intrinsic safety power supply only consider discharge characteristics of energy storage elements during discharge process， and do not consider influence
KANG Qian +3 more
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Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures
Advanced Engineering Materials, EarlyView.We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann +2 more
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Advanced Engineering Materials, EarlyView.Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir +5 more
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Design of internal power supply circuit for mining intrinsic safety broadcasting system equipment
Meikuang AnquanThe mining intrinsic safety broadcasting system equipment has the characteristics of unbalanced load current and high power consumption. In response to the problems of high start-up impulse current, short power supply distance, unreliable voltage ...
Dedong ZOU, Chengdong LI
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