Results 21 to 30 of about 214,165 (250)
A mine-used adaptive power supply with super wide input voltage range
Gong-kuang zidonghua, 2020 For problems of existing mine-used power supply such as inconvenient access, large volume, poor anti-fluctuation ability, complex circuit and high cost, a mine-used adaptive power supply with super wide input voltage range was designed.
LIN Yin, MENG Xiaohong, LIU Yahui
doaj +1 more source
Realizing Stretchable Aqueous Zn–Based Batteries by Material and Structural Designs
Frontiers in Energy Research, 2021 The increasing demands on stretchable power supply for wearable electronics accelerate the development of stretchable batteries. Zn-based batteries are promising to be applied in wearable electronics due to their outstanding performance, intrinsic safety,
Lifeng Hang, Guihua Jiang
doaj +1 more source
Coal mine low power laser methane detection and alarm instrument [PDF]
, 2019 At present, the portable carrier catalytic methane detection and alarm instrument for coal mine generally has many problems, such as high power consumption, short standby time, low detection accuracy, few parameters and single function, which can not ...
Grattan, K. T. V. +7 more
core +1 more source
Design of assist device for spark test
Gong-kuang zidonghua, 2016 There are some problems existed in spark test device during spark test such as no recovery of output or long recovery time of intrinsic safety power supply after short circuit, and inability to satisfy request of GB 3836.4-2010 Explosive atmospheres part
ZHU Qianwei
doaj +1 more source
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
doaj +1 more source
An overview on safety issues related to hydrogen and methane blend applications in domestic and industrial use [PDF]
, 2017 The share of electrical energy hailing from renewable sources in the European electricity mix is increasing. The match between renewable power supply and demand has become the greatest challenge to cope with.
de Santoli, Livio +2 more
core +1 more source
Research on explosion-proof technology for coal mine rescue robot
Gong-kuang zidonghua, 2019 The paper introduced general situation of explosion-proof technology of coal mine rescue robot, and summarized the research status and application of explosion-proof technology of coal mine rescue robot at home and abroad, and pointed out some progress ...
ZHENG Xuezhao +3 more
doaj +1 more source
Health status identification of catenary based on VMD and FA-ELM
Journal of Algorithms & Computational Technology, 2021 Catenary works as a key part in the electric railway traction power supply system, which is exposed outdoors for a long time and the failure rate is very high. Once a failure occurs, it will directly affect the driving safety. Based on the above, a model
Lingzhi Yi +5 more
doaj +1 more source
Optimization Design of Intrinsic Safety Pilot Circuit for Motor Remote Start and Stop
Meikuang Anquan, 2020 This paper introduces the types of remote starting and stopping pilot circuits of existing motors, the existence of mis-starting, the inability to identify all line faults and the unstable operation of power supply voltage reduction, and proposes an ...
ZHANG Yuxiang, SONG Jiancheng, TIAN Muqin
doaj +1 more source
, 2014 Tato práce se zabývá vývojem jiskrově bezpečného zdroje určeného pro napájení zařízení v prostorách s nebezpečím výbuchu. V souvislosti s tím jsou v práci vysvětleny pojmy související s jiskrovou bezpečností.
Wurzel, Tomáš
core