2009 Vol. 35, No. 2

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Research of Prediction of Coal and Gas Outburst Based on BP Artificial Neural Network Utilizing Bayesian Regularizatio
LI Yang, SHI Bi-ming
2009, 35(2): 1-5.
<Abstract>(15) <PDF>(5)
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The paper introduced principle of BP artificial neural network and Bayesian regularization(algorithm,) discussed establishment of model of BP artificial neural network utilizing Bayesian regularization,established the best network structure of prediction model of coal and gas outburst which had only one hidden layer with only one neural node through experiment of changing quantity of neural node in(hidden) layer of the network.The result of using prediction indexes of coal and gas outburst to train and check the network showed that the danger degree of coal and gas outburst of prediction by the netwoprk was according with the actual status completely.The result of analyzing inputted prediction indexes of coal and gas outburst of input layer of the network and influence weight of outputted prediction result of output layer showed that the geological structure type of coal seam had the largest effect to coal and gas outburst.Above research results had some reference value to research of prediction and prevention of coal and gas outburst and improvement of its prediction accuracy.
Research of Virtual Reality of Surface Mining Based on Free-viewpoint Stereoscopic Video and Its Implementatio
PENG Zhu~, CAI Qing-xiang~, ZHANG Lei~, YANG You~(
2009, 35(2): 5-9.
<Abstract>(6) <PDF>(3)
Abstract:
The paper designed and realized a kind of interaction and demonstrating system based on free-viewpoint stereoscopic video of surface mining virtual reality technology combining with the newest(interactive) free-viewpoint stereoscopic video technology and surface mining virtual reality technology.It(established) virtual visual model of a surface mine using 3DS Max and VRMap software,further more, scene romance and video image creation of such models were carried out in accordance with conditions fit to proper tidimensional display.At last,it designed interactive free-viewpoint stereoscopic video software combining with three-dimensional demonstrating characteristics of virtual scene,by which virtual reality scene was shown.The system overcame localization of traditional virtual reality demonstrations and (entitled) more users to participant in and interact with lower(cost.) The system owned stronger environmental expansion at the same time.
Research of Hierarchical Wireless Sensor Networks of Coal Mine and Its Desig
JIANG Hai-feng~, QIAN Jian-sheng~, REN Peng~, ZHAO Zuo-peng~, XU Xin-zheng~
2009, 35(2): 10-13.
<Abstract>(6) <PDF>(3)
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Based on analyzing application status of existing wireless sensor networks in coal mine,the paper designed a structure of heterogeneous and hierarchical wireless sensor networks used in coal mine and developed hardware platform of the network.It also put forward generate control mechanism of cluster network in lower tier and multiple-gateway based shortest path routing in middle backbone network tier combining with application characteristics of coal mine.
Analysis and Synthesis of Fire Signals of Belt Conveyor Based on Multi-channel Auto-regressive Model
GUO Jia
2009, 35(2): 14-18.
<Abstract>(48) <PDF>(3)
Abstract:
Combining with features of Wiener proof and Toeplitz equation,the paper deduced a simple solving method of multi-channel auto-regressive model,introduced method of analysis and synthesis of fire signals of belt conveyor with multi-channel. Matlab was adopted to simulate the fire signals and non-fire signals of belt conveyor.The simulation results showed that the synthestical signals had the same trends with original signals as a whole and had a feature of power spectrum matching.
Design of Frequency Conversion Speed Regulation System with SVPWM for Asynchronous Motor Based on DSP
TAN Guo-jun~(, 2), ZHANG Xu-long~(
2009, 35(2): 19-22.
<Abstract>(22) <PDF>(3)
Abstract:
The paper analyzed principle of voltage space vector pulse width modulation(SVPWM),designed SVPWM frequency conversion speed regulation system which took DSP chip as(controller,)(introduced) hardware structure of the system and its software realization,built up simulation model of the(system) and then did simulation test to the system with Matlab/Simulink (software.) The(simulation) results confirmed that the system had fast starting,small overshoot and small steady-state torque(ripple,) as well as good static and dynamic performance.
2009, 35(2): 23-27.
<Abstract>(13) <PDF>(5)
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Research of Fault Line Selection in Small Current Grounding System Based on Wavelet Packets and Energy Analysis
CHEN Fang-jing, CHEN Zhong-ren, GUI Cun-bing
2009, 35(2): 27-31.
<Abstract>(11) <PDF>(3)
Abstract:
Through deep analysis of stable state and transient state process of grounding fault in distribution network and combining with wavelet packets theory,the paper put forward a new method of single-phase grounding line selection in distribution network based on the wavelet packet and energy,introduced base,principle and procedure of line selection of the method.The simulation experiment of Matlab(indicated) that the line selection method enhanced accuracy and reliability of grounding fault line selection,(which) had good application worth.
A Design scheme of Filtering of Mine Hoist Based on High Pass Filter
FENG Jing, WANG Qing-ling, ZENG Zhi-yong
2009, 35(2): 32-35.
<Abstract>(12) <PDF>(3)
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Establishment of Corrosion Model of Blast Furnace Bed and Its Implementatio
ZHANG Liang
2009, 35(2): 35-38.
<Abstract>(11) <PDF>(2)
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Design of On-line Monitoring Laboratory Equipment of Air Dense-medium Fluidized Bed
NIU Hui-juan, HU Ya-fei, XIONG Jian-jun, CHENG Xiao-feng
2009, 35(2): 39-42.
<Abstract>(6) <PDF>(2)
Abstract:
Aiming at the disadvantages of dry coal cleaning laboratory equipment of air dense-medium(fluidized) bed in lab process,the paper put forward a design scheme of on-line monitoring laboratory equipment of(fluidized) bed,introduced the structure,working principle,on-line monitoring principle and(method) of the(fluidized) bed,expounded design of hardware and software of online monitoring laboratory equipment emphatically.The laboratory equipment realized automatic measurement parameters in(preparation) process and display,processing and transmiting of the measurement parameters,which offered a scientific experiment research means for dry coal cleaning of air dense-medium fluidized bed.
Design of 3D Imaging System for Multi-arm Caliper Logging Tool Based on OpenGL
YANG Ping~, YANG Liang-yu~, HUANG Xiang-dong~
2009, 35(2): 42-45.
<Abstract>(14) <PDF>(2)
Abstract:
The paper introduced measurement principle of multi-arm caliper logging tool,designed 3D imaging system for multi-arm caliper logging tool based on OpenGL.It also introduced obtaining of space point,data processing and software design,implementation method of 3D reconstruction of 3D imaging system for multi-arm caliper logging tool in details.The whole effect pictures of 3D reconstruction showed that the system could achieve 3D reconstruction of casing pipe accurately and quickly,the algorithm was reasonable and simple.
Design of Intelligent Fire Detection System for Air Sampling of Coal Mine
LI Bing, CUI Chun-yan, LAI Mei-ying
2009, 35(2): 46-48.
<Abstract>(29) <PDF>(3)
Abstract:
The paper designed a fire detection system for air sampling combining with fire(characteristics) of coal mine environment.It introduced composition,working principles,characteristics and key technologies of system implementation of the detection system in details.The detection system was a(fire) control and alarm system with fireproofing and flameproof combining with analysis method and smoke method.It could play the role of preventing fire and detect gas concentration in coal mine.
Design of Automatic Signal Alarm and Control Device of Mine-used Narrow-gauge Rail Hauge
JIANG De-chang
2009, 35(2): 49-51.
<Abstract>(10) <PDF>(3)
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Design of Monitoring and Control System of Air Compressor Based on S7-300 PLC
SHI Jing-shui, LIU Dian-xiang
2009, 35(2): 51-53.
<Abstract>(29) <PDF>(3)
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Design of Wireless Monitoring and Control System of Coal Mine Based on GPRS
AN Ji-yu, ZHANG Tong, ZHANG Guo-wei
2009, 35(2): 54-56.
<Abstract>(7) <PDF>(3)
Abstract:
In view of status of coal mine safety monitoring and control,the paper put forward a design scheme of wireless monitoring and control system of coal mine based on GPRS communication technology.It introduced hardware and software design of the system.The system adopted monitor terminal to collect and process field data,made GPRS wireless network access to Internet through PPP(LCP,PAP,IPCP) network consultation and realized real-time control from remote monitoring and control centre to coal mine field.
Design of Multi-level Frequency Converter Based on Cells Series
YE Qiao-ting, WU Yong-xiang
2009, 35(2): 57-59.
<Abstract>(27) <PDF>(3)
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Aiming at the existing problems of high-voltage frequency converter,the paper designed a new type of frequency converter,introduced hardware composition,working principle,circuit design and implementation method of software control of power unit of the frequency converter in details.The(frequency) converter(adopted) multilevel technology with cells series,which could obtain stepped SPWM waveforms,and could drive ordinary motor directly with no output filter.
Design of Controller of Electromagnetic Speed Regulating Motor Based on AVR Single-chip Microcomputer
YAN Jian-jun, JI Li
2009, 35(2): 60-63.
<Abstract>(6) <PDF>(2)
Abstract:
Aiming at the problems of low precision of speed regulating and inconvenience of zero(adjustment) of analogical controller of electromagnetic speed regulating motor,the paper designed a full-digital controller of electromagnetic speed regulating motor which took AVR single-chip microcomputer as core,introduced structure,hardware and software design of the controller.It also expounded the key point of design of detection circuit of voltage(zero-crossing,) thyristor trigger(circuit) and measurement(circuit) of pulse conversion in details.The controller applied speed measuring with(frequency) and digital(PID algorithm,) and could meet different load.
Design of a Security Protection Management System of Monitoring and Control System of Substatio
LUO Shao-ping~(, 2), LUO An~, ZHOU Ke~
2009, 35(2): 63-66.
<Abstract>(21) <PDF>(3)
Abstract:
According to practice development situation and requirement of system security of moni-(toring) and control system of substation of a smeltery,the paper designed a security protection management system of monitoring and control system of substation,introduced overall structure of the system,(expounded) design of system security,network platform security,application security,data security,background monitoring and control program of security protection management and so on.The system had brought into service successfully.The practice running results showed that the system had correct design and better effect.
Development of Intelligent Running System of Mancage in Mine Incline Laneway
LI Jing-zhao, ZHAN Lin, TANG Wen-bing, XU Hui
2009, 35(2): 67-71.
<Abstract>(24) <PDF>(3)
Abstract:
The paper introduced an intelligent running system of mancage in mine incline lanway,which was made up of human-machine interface,PLC and some sensors.It analyzed hardware structure,running way,protection function and main characteristics of the system,and gave software design of the intelligent running system.The system provided reliable guarantee to safe and high efficiency running of mancage in mine incline laneway.
Design of Underground Paste Filling System Based on WinCC and Its Implementatio
DAI Peng~, YAN Shu-xun~, WU Xiao-jie~, HU Yong-feng~
2009, 35(2): 71-73.
<Abstract>(17) <PDF>(4)
Abstract:
The paper introduced hardware composition and working principle of underground paste(filling) system based on WinCC,expounded design of communication confinguration,picture configuration and dynamic database of upper computer of the system in details.The practice application showed that the system had stable working performance,friendly man-machine interface and convenient use,and could meet the requirements of filling system.
Resolution Scheme of Local Sale Management Informatization of Modern Coal Enterprises
HE Yao-yi, CHEN Xiao-lin, TANG Li-ping, HAN A
2009, 35(2): 74-77.
<Abstract>(16) <PDF>(3)
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Research of Compatibility of Configuration Parameters between Central Station and Substation of Mine Safety Monitoring and Control System
NI Sheng-jie, HUA Gang, LIU Pa
2009, 35(2): 77-79.
<Abstract>(5) <PDF>(3)
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Research of Mine-used Portable Virtual Instrument and Its Implementatio
LI Man, SHI Xiao-jua
2009, 35(2): 80-82.
<Abstract>(8) <PDF>(3)
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Design of Optical Fiber Sensor Detection System of Methane
XIONG Hong-yan, ZHANG Hong, YUE Hong-ping
2009, 35(2): 82-84.
<Abstract>(35) <PDF>(6)
Abstract:
Computer Assistant Design of Laneway Sectio
SHAN Ren-liang, ZHANG Yi, ZHANG Lei, TIAN Liang
2009, 35(2): 85-87.
<Abstract>(16) <PDF>(3)
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Discussion on Realization of Digitized Substation Technology in Coal Mine Substatio
SHI Li-ping, YAN Qi-yao, ZHANG Zeng-sheng, ZHANG Yong
2009, 35(2): 88-90.
<Abstract>(12) <PDF>(3)
Abstract:
The paper analyzed the current situation of automatic technologies of coal mine substation,summarized defect of automatic technology of coal mine substation at the present stage,discussed(feasibility) and advantage of development trend from coal mine substation to digitized substation.It also(gave) suggestion of realizing digitized substation.
Design of Mine DC Regulated Power Supply
ZHENG Ping-an, SONG Yu-qiang
2009, 35(2): 91-93.
<Abstract>(32) <PDF>(6)
Abstract:
Design of LCD Controller Based on VHDL and Its Implementatio
ZHOU Lei, FU Hui-sheng, XIONG Jian-wei
2009, 35(2): 93-94.
<Abstract>(45) <PDF>(2)
Abstract:

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