Results 31 to 40 of about 135 (70)

Design of Battery Management System of Mine-used DC Power Supply

Gong-kuang zidonghua, 2012
The paper introduced overall structure and designs of hardware and software of battery management system of mine-used DC power supply. The system assesses remaining capacity by detecting charge current and discharge current to ensure continuous power ...
TIAN Wei-ming
doaj  

Path selection algorithms for connecting wireless base stations to power centers in a mine

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. Necessary condition for the systems of safety and process control functioning in a mine is to provide power supply to the relevant facilities.
Denis A. Migov, Anastaiya N. Yurgenson
doaj   +1 more source

Mine emergency communication system

Gong-kuang zidonghua, 2019
Feasibility of using existing mine communication system as emergency communication system was analyzed. Leakage communication system, inductive communication system, multi-base station mobile communication system, broadcast communication system and ...
Mine emergency communication system
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Novel cable measurement while drilling device used for directional drilling in coal mine

Gong-kuang zidonghua, 2015
In order to solve problems of short usage time, poor signal stability, high fault ratio and high maintenance cost of existing cable measurement while drilling device for coal mine drilling which was powered by battery in hole, a technology scheme was ...
FANG Jun, SHI Zhijun, LI Quanxin, GAO Jun   +3 more
doaj   +1 more source

Research on overcharge thermal runaway behavior characteristics of explosion-proof LiFePO4/C lithium battery power supply

Meikuang Anquan
As an important foundation for the electrification development of coal mine equipment, mine-used explosion-proof lithium battery power supplies have developed rapidly in recent years.
Zihan LI
doaj   +1 more source

Research on key technologies of mine-used intelligent inspection robot

Gong-kuang zidonghua, 2020
The research status of mine-used intelligent inspection robot was introduced. In view of characteristics of mine-used intelligent inspection robot, the key technologies of mine-used intelligent inspection robot were analyzed in detail from mobile ...
PAN Xiangsheng, CHEN Xiaojing
doaj   +1 more source

Design of mine-used adaptive wide-voltage power supply with explosion-proof and intrinsic safety

Gong-kuang zidonghua, 2013
For characteristics that power supplys in coal mine underground has multi input voltage grades and are susceptible to disturbed when big equipments are starting or stopping, the paper put forward a design scheme of adaptive wide-voltage power supply with
LIU Ya-hui, GUO Jiang-tao, LIN Yin
doaj  

Design of wide range DC input power module used in coal mine

Gong-kuang zidonghua, 2015
In view of problems that power supply voltage level and power type between mine-used sensors and DC power supply system is inconsistent, a design scheme of new type of wide range DC input and intrinsic safety type power module was put forward.
HU Yun, WU Yincheng, ZHANG Xiaobo, HUANG Shaoji   +3 more
doaj   +1 more source

Research and application of remote intelligent fluid supply and power supply technology in coal mine super-long strike fully mechanized caving face

Meitan kexue jishu
In the working conditions of long-strike coal mine faces, the traditional approach for liquid supply and power supply equipment is mobile withdrawal to follow the mining progress. However, this production method has several drawbacks. It involves a large
Chuanming ZHANG, Qingkai ZANG, Yongming NIU, Hui GUO, Ran LI, Dongyue ZHANG   +5 more
doaj   +1 more source

Research of comprehensive quantitative evaluation of power quality of coal mine

Gong-kuang zidonghua, 2015
The current harmonic distortion reflecting the maximum load current was defined, and a distortion power factor considering non-sinusoidal current waveform was built according to special requirements of coal mine electrical load.
WANG Qingliang, YAO Miao
doaj   +1 more source