The inadequacy of regulatory frameworks in time of crisis and in low-resource settings : personal protective equipment and COVID-19 [PDF]
, 2020 COVID-19 pandemic is plaguing the world and representing the most significant stress test for many national healthcare systems and services, since their foundation.
Formisano, Claudio +4 more
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Card Reading Substation of Mine Flameproof and Intrinsic Safety Based on STM32
Meikuang Anquan, 2020 To meet the requirements of unique detection of coal mine personnel management system and working state detection for identification card, a card reading substation of flameproof and intrinsically safe is designed based on STM32f103RCT6.
WANG Yangyang, HONG Yuling
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
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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
Coal mine intelligent information comprehensive carrier network
Gong-kuang zidonghua, 2022 At present, the information carrier network used in coal mine is mainly 100 Megabit, Gigabit and 10 Gigabit mining Ethernet ring network. The time delay and reliability of the network are uncontrollable.
SUN Jiping, CHENG Jiamin
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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
doaj +1 more source
Future of smart cardiovascular implants [PDF]
, 2018 Cardiovascular disease remains the leading cause of death in Western society. Recent technological advances have opened the opportunity of developing new and innovative smart stent devices that have advanced electrical properties that can improve ...
Bussooa, Anubhav +2 more
core +1 more source
Design of mine-used power supply with super wide input voltage range
Gong-kuang zidonghua, 2016 For problems of existing mine-used flameproof and intrinsically safe type power supply with multiple input voltage level such as large voltage fluctuation, heavy weight and difficult maintenance, a design scheme of mine-used power supply with super wide ...
LIU Yahui
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Near infrared spectroscopy for fibre based gas detection [PDF]
, 2010 Gas sensing systems based on fibre optic linked near infra red absorption cells are potentially a flexible and effective tool for monitoring accumulations of hazardous and noxious gases in enclosed areas such as tunnels and mines.
Culshaw, B. +3 more
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Design of mine-used intrinsically safe wireless through-the-earth communication system
Gong-kuang zidonghua, 2016 The paper introduced structure and key technologies of mine-used intrinsically safe wireless through-the-earth communication system，and analyzed working principle of the system.
TIAN Xifang +3 more
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