Results 11 to 20 of about 85,011 (253)

Mine intrinsic safety power supply based on adjustable capacity and protection time

open access: yesMeikuang Anquan, 2021
In view of the contradiction between the capacity and impact resistance of mine intrinsically safe power supply, an intrinsically safe power supply with adjustable capacity and protection time, self-recovery and slow start function is designed.
ZOU Dedong, LIU Peng
doaj   +1 more source

Short circuit transient power analysis of hybrid intrinsically safe circuit

open access: yesGong-kuang zidonghua, 2023
Currently, research on the intrinsically safe features of intrinsically safe circuits mostly relies on the IEC spark experimental device as the experimental platform.
NIE Honglin   +6 more
doaj   +1 more source

Influence factors analysis of discharge characteristics of compound intrinsically-safe circuit

open access: yesGong-kuang zidonghua, 2020
Existing researches on discharge characteristics of compound intrinsically-safe circuits may be lack of mathematical analysis, or consider influence factors incompletely.
SHI Yaping
doaj   +1 more source

Negative pressure automatic water discharge device based on intrinsically safe DC electric valve

open access: yesMeikuang Anquan, 2021
A negative pressure automatic drainer based on intrinsically safe DC electric valve is designed. Through the design of the drive circuit, protection circuit and control program of the DC electric valve, the 24 V intrinsic safe DC power supply provided ...
WANG Zuxun
doaj   +1 more source

Multi-Sensor System For Level Measurements With Optical Fibres [PDF]

open access: yes, 2002
A system for measuring liquid level in multiple tanks using optical fibre technology has been developed. The oil field service industry can benefit from this intrinsically safe technology.
Garcinuño, J.   +3 more
core   +2 more sources

Near infrared spectroscopy for fibre based gas detection [PDF]

open access: yes, 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
core   +1 more source

Implementation of explosion safety regulations in design of a mobile robot for coal mines [PDF]

open access: yes, 2018
The article focuses on specific challenges of the design of a reconnaissance mobile robotic system aimed for inspection in underground coal mine areas after a catastrophic event.
Babjak, Ján   +5 more
core   +2 more sources

Future of smart cardiovascular implants [PDF]

open access: yes, 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

Card Reading Substation of Mine Flameproof and Intrinsic Safety Based on STM32

open access: yesMeikuang 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

open access: yesMeikuang 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

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