Results 21 to 30 of about 485,064 (256)

Research on image enhancement algorithm for the monitoring system in coal mine hoist

open access: yesMeasurement and control (London. 1968), 2023
As the mine hoist monitors video images with poor light, low brightness, heavy dust, and low contrast, the monitoring video images are not conducive to monitoring. They cannot meet the needs of applications.
Wei Zhang   +3 more
semanticscholar   +1 more source

Reliability evaluation of electromechanical braking system of mine hoist based on fault tree analysis and Bayesian network

open access: yesMechanics & Industry, 2023
Electromechanical braking system is the key way to improve the braking response ability of mine hoist. At present, the reliability research of electromechanical braking system is less.
H. Jin, Xu Wang, Huwei Xu, Zhuqi Chen
semanticscholar   +1 more source

HMS Hampshire 100:Survey Report [PDF]

open access: yes, 2020
HMS HAMPSHIRE was a British 10,850-long tons pre-dreadnought Devonshire-class armoured cruiser launched on 24th September 1903, completed on 15th July 1905 and commissioned one month later.
Crofts, David   +7 more
core   +2 more sources

MHlinker: Research on a Joint Extraction Method of Fault Entity Relationship for Mine Hoist

open access: yesElectronics, 2023
Triplet extraction is the key technology to automatically construct knowledge graphs. Extracting the triplet of mechanical equipment fault relationships is of great significance in constructing the fault diagnosis of a mine hoist.
Xiaochao Dang   +5 more
semanticscholar   +1 more source

Application of vibration signal detection in mine hoist fault monitoring system

open access: yesJournal of Measurements in Engineering, 2023
Due to the harsh working environment and various types of faults in mine hoists, the implementation of conventional detection is relatively difficult. In order to improve the maintenance and fault detection efficiency of mine hoist, a portable vibration ...
Yonghong Fan, Jinyan Zhang, Daoping Han
semanticscholar   +1 more source

DdERT: Research on Named Entity Recognition for Mine Hoist Using a Chinese BERT Model

open access: yesElectronics, 2023
This study aims to solve the problem of named entity recognition of complex mechanical equipment faults, especially the problems of many professional terms, long sentences, fuzzy entity boundaries, entity nesting, and abbreviation ambiguity, in mine ...
Xiaochao Dang   +4 more
semanticscholar   +1 more source

Accurate Recognition Method for Rolling Bearing Failure of Mine Hoist in Strong Noise Environment

open access: yesMachines, 2023
The operating environment of rolling bearings in mine hoists is complicated, and detecting their faults is hindered by a weak and unstable initial vibration signal. This directly affects the ability to extract pertinent fault features.
Chunyang Liu   +7 more
semanticscholar   +1 more source

Research on the health evaluation and prediction system for mine hoists

open access: yesGong-kuang zidonghua, 2023
In response to the relatively limited research on health evaluation and prediction of the entire system of mine hoists, a health evaluation index system and comment set for mine hoists have been established.
WANG Chen, YANG An
doaj   +1 more source

Theoretic and experimental research on the possibilities for moderning and reabilitating the extraction installation of the Slănic Prahova salt mine [PDF]

open access: yesMATEC Web of Conferences, 2022
The paper deals with the subject of rehabilitation and mechanical modernization of the extraction plant within the mining operation of the salt mine from Slanic Prahova region.
Vitan Daniel Cosmin   +3 more
doaj   +1 more source

Fault Diagnosis of Mine Hoist Based on MFCC-SVDD

open access: yesHighlights in Science Engineering and Technology, 2023
In the field of coal mine production, mine hoist plays a very important role in the whole mine transportation engineering. Its safety and stability directly affect the production efficiency of coal mine and the life safety of staff.
Xiao Wang, Jingzhao Li
semanticscholar   +1 more source

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