2009 Vol. 35, No. 5

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Cover Catalogue
Research of Transmission Characteristic of High-frequency Electromagnetic Wave in Incline Shaft
SU Mao-di~(, 2), WANG Jian-bo~, QI Hui~, YU-WEN Jing-ze~
2009, 35(5): 1-4.
<Abstract>(73) <PDF>(7)
Abstract:
The paper analyzed transmission characteristics of high-frequency electromagnetic wave of underground wireless channel,put forward that electromagnetic wave transmission has multi-path fading effect because of diffraction,reflection and scattering of obstacle such as coal seam,coal wall and underground working equipment.The paper introduced simulation and research method which used to study effect of distance of electromagnetic wave transmission on multipath fading and RMS delay,namely principle of ray tracing method,adjustment of ray direction in track process and calculation of field strength value of ray. Based on the research method,the paper also studied effect of distance between transmitter and receiver on propagation loss and RMS time delay spread of the electromagnetic wave in idealization model of incline tunnel.The simulation result showed that closer distances between transmitter and receiver,less transmission loss;lower central frequencies of electromagnetic wave,less transmission loss;longer distances between receiver and transmitter,higher RMS delay value of electromagnetic transmission.
Research of System Framework of Coal Mine Safety Application Grid
SHEN Yan-mei, ZHANG Ya-ting
2009, 35(5): 5-8.
<Abstract>(34) <PDF>(5)
Abstract:
Using grid to solve the problems of data-intensiveness,computing-intensiveness,distribution of resources and heterogeneous in management of mine safety has become a key point for realizing high performance computing and then improving speed and accuracy of forecasting of coal mine safety.Based on the current communication networks of coal mine and referring to the OGSA system,the paper put forward and built up a system framework of coal mine safety application grid(CMSAG) from information acquirement,processing to application.Combining with the application equirement,the paper studied the key technologies of CMSAG system in details,such as resource management,resource scheduling,grid safety and so on.At last,it gave a material application demonstration.
Nonlinear Correction of Methane Sensor Based on Least Square Support Vector Machine
LIU Rui-fang, MEI Xiao-a
2009, 35(5): 8-12.
<Abstract>(55) <PDF>(5)
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According to sample of methane sensor,the paper put forward a method of correcting nonlinear error of methane sensor,which can identify cont rary model characteristic of methane sensorcorrectly based on the least square support vector machine.It introduced principles of correction method of SVM regression estimation and LS-SVM in details.The method does not make use of any priori knowledge about contrary model function and can ensure that extremal solution is optimal and has generalization ability.The application result showed that the detection precision of methane sensor is 0.4% with the method,the result of nonlinear correction are great satisfaction.
Research of DC Stray Current in Coal Mine Underground
YIN Xiao-ben~, FAN Di-peng~
2009, 35(5): 12-15.
<Abstract>(18) <PDF>(5)
Abstract:
The problems such as corrosion of steel rail and the buried metal pipe,and electric shock,interference to communication systems caused by stray current have become prominent increasingly.Through establishing unilateral power supply model of electric locomotive,the paper deducted the mathematical formula for stray current under reasonable suppositions,simulated the formula by using the simulation software Matlab.The simulation result showed that in unilateral power supply range,stray current increased at first and then decreased with increasing the distance to electric locomotive,and it come to maximum at the mid-point of power supply range,the transition resistance and track longitudinal resistivity have great affection to the stray current,the distance and the current of power supply have secondary affection to the stray current.
Research of Dead-time Compensation Strategy of Three-level Inverter and Its Implemenatio
HE Feng-you, MA Xiu-li, LI Na, YANG Ya
2009, 35(5): 15-18.
<Abstract>(42) <PDF>(5)
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The paper introduced dead-time effect of three-level inverter in details,analyzed the dead-time compensation strategy of the three-level inverter,established a simulation model based on power vector control for three-level inverter taking a 22 kW/380 V induction motor as example.The simulation result showed that the stable time of rotate speed of the inverter is shorter when dead-time is compensated,distorsion factor of current harmonic wave is smaller and torque pulsation is decreased obviously.
A New Method of Real-time Reading of Pointer Meter of Industry and Mine Based on Difference Image Processing and Angle-proportionment Calculatio
REN Jian-qiang
2009, 35(5): 18-21.
<Abstract>(40) <PDF>(5)
Abstract:
Automatic reading method of pointer meter of industry and mine based on image technology has been a research hotspot of industry and mine automation recently,but the urgent problem is the place of camera and imaging distortion affected the reading precision.The paper put forward a new automatic reading method of industry and mine meter based on difference image processing and angle-proportionment calculation,introduced design and implementation of sub-algorithm of degree scale calibration and real-time computer.The testing data showed that the method improves the automatic reading precision and the system’s robustness in industry and mine environment.
Research of 3D Automatic Modeling Method of Mine Laneway Based on ArcGIS Engine and Its Implementatio
WANG Xue-wei~(, 2), SHAO Ya-qin~(
2009, 35(5): 22-25.
<Abstract>(53) <PDF>(7)
Abstract:
The paper compared and analyzed 3D modeling technologies of mine laneway,put forward a 3D modeling method of mine laneway based on MultiPatch 3D data structure in ArcGIS.Considering characteristics of mine laneway,the method realized 3D automatic modeling of mine laneway based on secondary development on ArcGIS Engine platform under the C# developing environment.The method provides a new solution for establishment of 3D mine laneway information system.
Research of Three-level Shunt Active Power Filter Based on SVPWM
TAN Guo-jun, ZHANG Jian-liang, HAN Yao-fei
2009, 35(5): 26-30.
<Abstract>(34) <PDF>(4)
Abstract:
The paper established a mathematical model of diode-clamped type three-level shunt active power filter(APF) with three-phase three-wire,put forward a control scheme of shunt three-level APF combining with calculation of instruction current based on i_p-i_q method,predictive current control and space vector pulse width modulation(SVPWM).It also analyzed simplified three-level SVPWM control algorithm.The result of simulation and experiment showed that the scheme has good compensation effect for harmonic wave,and is suited for DSP hardware realization and main circuit protection with full-digital control,has better application prospect.
Research of Position of Cable Fault Based on Traveling Wave Detectio
LIU Hao
2009, 35(5): 31-33.
<Abstract>(36) <PDF>(5)
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Research of Trajectory Planning of Industrial Robot Based on VC++
WANG Xiao-li, HOU Yuan-bin, WANG Tao
2009, 35(5): 34-37.
<Abstract>(41) <PDF>(3)
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The paper discussed theory and research method of trajectory planning of industrial robot,and introduced realization method of software of trajectory planning of industrial robot based on VC++.The software can make robot to plan collision-free trajectory in real-time,and use ROSTY software to draw simulation diagram of mechanism of collision-free position and pose.Meanwhile,through experiment of Motoman-HP3 robot,it realized application using external interface function of Motocom32 software called by VC++ application program to plan trajectory for industrial robot.The simulation experiment proved that the software of trajectory planning of robot can realize remote control and ensures position precision for robot.
Design of Wireless Monitoring and Control System of Small Coal Mines Based on GSM
RU Hong-fang
2009, 35(5): 38-40.
<Abstract>(59) <PDF>(3)
Abstract:
Aiming at the problem that digital remote monitoring and control system of coal mine is difficult to realize in small coal mines,the paper presented a design scheme of wireless monitoring and control system of small coal mines based on GSM,and introduced supervision mode,general structure and communication method of the system.The system realizes the wireless monitoring and control of small coal mines by use of technologies of GSM wireless communication and radio frequency.
Design of Monitoing System for Coal Spontaneous Combustion Sources Based on Wireless Sensor Networks
DENG Ming~(, 2), ZHANG Guo-shu~
2009, 35(5): 41-44.
<Abstract>(50) <PDF>(4)
Abstract:
Because of wireless sensor networks can realize integration of processing,storage,sensing and communication on small-scale and low-cost devices,it is widely applied in fields of environmental monitoring.On the basis of analyzing the existing defaults of present monitoring technique of coal spontaneous combustion sources,the paper put forward a monitoring system for coal spontaneous combustion source based on WSN.It introduced design of structure,sensor nodes and access gateway nodes of the system,and gave software design of micro-sensor nodes.The system can achieve temperature detection for special area that existing wire system couldn’t implement,and improve safety production level of coal mine effectively.
Research of Key Technologies of Management System of Voice Interaction for Mine Ventilation Safety
SUN Xiao-lan, MA Xiao-ping, WANG Qian-ping
2009, 35(5): 45-48.
<Abstract>(22) <PDF>(3)
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Design of Remote Monitoring and Control System of Environmental Parameters of Coal Mine Based on Embedded Web Server
FANG Hong-ping, ZHANG Wen-cheng
2009, 35(5): 49-52.
<Abstract>(59) <PDF>(3)
Abstract:
The paper introduced design idea,characteristics and configuration of embedded Web Server and design of a remote monitoring and control system of environmental parameters of coal mine based on embedded Web Server.It also introduced system architecture,design of software and hardware,implementation of the system in details.The remote monitoring and control system adopts embedded Web Server as a middle device to link parameters gathering equipments and Internet network seamlessly,which can offer some conveniences to managers to monitor environmental parameters of coal mine through Web Browser.
Design of Virtual Mine System Based on Virtual Reality Technology
WANG Hui-bi
2009, 35(5): 53-56.
<Abstract>(34) <PDF>(7)
Abstract:
The paper introduced overall structure and system flow design of virtual mine system based on virtual reality technology,described some key techniques of implementation of the sytem in details,including script definition technique,model import technique,lighting and texture technique.The system adopts script definition technique in order to make scene edition be vitrification,which provides more convenient and friendly operating method for user.
Design of Multi-parameter Gas Detector Based on Soft-decision Information Fusion and Its Implementatio
ZHOU Feng, LIANG Wei, WEI Hong-fei
2009, 35(5): 56-59.
<Abstract>(58) <PDF>(3)
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Research of Integration Technology of Monitoring and Control System of Mining Area
JIANG Tao, QIAN Xu
2009, 35(5): 60-63.
<Abstract>(32) <PDF>(3)
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Research of Rapid and Automatic Rendering of Double-line Graphics of Mine Ventilation Simulation System
SHEN Long~, WEI Lian-jiang~, ZHU Hua-xin~
2009, 35(5): 63-66.
<Abstract>(25) <PDF>(3)
Abstract:
Mine ventilation simulation system usually uses single-line to draw and display ventilation system graphics and can’t reflect layer relationship among tunnels.The paper put forward a new and high-efficient automatic drawing method of double-line graphics for ventilation system creatively,namely ("virtual) double-line".It introduced natures and characteristics of the "virtual double-line" method,implementation mechanism and steps of rendering ventilation system double-line graphics rapidly and automatically and its implementation method.The "virtual double-line" method(needn’t) calculate coordinate of the double-line points and can render ventilation system double-line graphics rapidly and automatically,and the double-line graphics can reflect layer relationship among tunnels,which has characteristics of less calculation,high execution efficiency.
Improvement Scheme of Monitoring and Control System Based on Modbus Protocol
ZHENG Xian-feng, MAO Jing-kui, ZHANG Kai-tuo
2009, 35(5): 67-69.
<Abstract>(61) <PDF>(3)
Abstract:
Design of Intelligent Current Protection System of Mine Power Network
ZHENG Li-ju
2009, 35(5): 70-74.
<Abstract>(39) <PDF>(3)
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The paper analyzed characteristics of current fault of mine power network,introduced a design of intelligent protection system of current of mine power network based on PLC,described hardware and software design of the system,expounded implementation of protection methods such as symmetry current fault protection based on phase-sensitive detection,asymmetrical current fault protection based on negative sequence detection and overload current fault protection based on amplitude detection in details.The system has been applied in practice,and realizes intelligent current protection of mine power network.
Design of Real-time Data Collection System Based on Matlab/xPCTarget
JI ZHI, HE Feng-you, DOU Chun-yu
2009, 35(5): 74-77.
<Abstract>(49) <PDF>(2)
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Development of Dynamic Braking Power Supply of High-frequency Switch Based on SPWM
JIAO Wen-liang, LI Li-hua
2009, 35(5): 78-80.
<Abstract>(36) <PDF>(2)
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Design of Embedded and Intelligent Power Supply with Intrinsic Safety
WANG Dong-bo
2009, 35(5): 81-82.
<Abstract>(60) <PDF>(10)
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Design of Integrated Monitoring and Management System for Coal Coking Enterprise and Its Implementatio
PIAO Chun-hui~(, 2), HUO Ren-chong~
2009, 35(5): 83-87.
<Abstract>(28) <PDF>(4)
Abstract:
Aiming at the existing problem of information island in informatization construct of coal coking enterprises,the paper designed an integrated monitoring and management system of production for coal coking enterprise,introduced topology structure,development mode of the system.It also expounded functions design and implementation of key techniques of sub-systems in details.The system is based on Intranet VPN technology and adopts composite structure of C/S and B/S to integrate each of sub-system together,which solves problem of information island effectively and enhances management level of the enterprise.
Design of Automatic Compensation Device of Capacitive Current for Coal Mine Power Supply System
MA Jian-li, GUO Jia, QIAN Ying
2009, 35(5): 87-89.
<Abstract>(43) <PDF>(3)
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Automatic Monitoring and Control System for Mine-used Main Ventilation Based on SLC500 PLC
CUI Guang-liang, ZHU Hong-yun, LIU Cheng-liang
2009, 35(5): 90-92.
<Abstract>(80) <PDF>(8)
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Reformation of Integration Control Device of Voltage and Reactive Power and Its APplicatio
SUN Yan-liang
2009, 35(5): 92-95.
<Abstract>(34) <PDF>(3)
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PLC Carrier Electronic Control System of Electrical Traction Shearer
ZHU Xiao-fang, YANG Li-dong, LI Yan-hui
2009, 35(5): 95-96.
<Abstract>(55) <PDF>(4)
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Application Research of Fault Diagnosis Expert System of Electrical Traction Shearer Based on CLIPS
HU Ju
2009, 35(5): 97-100.
<Abstract>(48) <PDF>(4)
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Design of Mine-used LED Display System Based on CPLD
FENG Xiao-long, QIAN Jian-sheng, WANG Hong-jian, LI Jing
2009, 35(5): 100-102.
<Abstract>(33) <PDF>(4)
Abstract:
The paper introduced a mine-used LED display system based on CPLD and single-chip microcomputer,introduced design of overall,data processing unit of single-chip microcomputer and CPLD scanning and display unit of the system in details.The system takes 89C55 single-chip microcomputer as controller and realizes communication with PC and data processing function,and uses CPLD to realize function of automatic scanning of LED screen which simplifies the system structure and improves the scanning speed.
Analysis of Electromagnetic Compatibility of Safety Monitoring and Control Device of Coal Mine and Its Desig
WANG Xue-ming, ZHANG Li-bin, JIANG Zhe, ZHU Qian-wei
2009, 35(5): 103-105.
<Abstract>(81) <PDF>(4)
Abstract:
The paper analyzed electromagnetic compatibility of safety monitoring and control device of coal mine.Aiming at the different kinds of electromagnetic interference,it put forward a design method of electromagnetic compatible which suited for underground safety monitoring and control device.The method improves the ability of anti-electromagnetic interference and offers security for mine safety production.
Design of Group Control System of Gas Generator in Rolling Mill
ZUO Xi-qing, YU Zhi-geng, SHENG Qiang, LU Jian-er
2009, 35(5): 105-107.
<Abstract>(49) <PDF>(2)
Abstract:
Application of Fuzzy PID Controller in Temperature Control System of Thermal Power Plant
ZHANG Chuang-zhi, ZHANG Xiao-guang, LIU Li-jun, DUAN Song-jie, LI Mi
2009, 35(5): 108-111.
<Abstract>(83) <PDF>(4)
Abstract:
According to the characteristics of temperature control system of thermal power plant,the paper designed a temperature control system based on fuzzy PID controller,introduced the structure,working principle of the system,analyzed design process of the PID controller in details and its application in temperature control system of thermal power plant.
Design of Real-time Cross Correlator Based on NIOSⅡ
LI Wen-tao, LIANG Hao
2009, 35(5): 112-115.
<Abstract>(29) <PDF>(2)
Abstract:
The cross correlator is the core device of measurement system of correlation two-phase-flow.The paper introduced working principle and cross correlation algorithm of measurement system of correlation flows and design of a cross correlator based on NIOSⅡ embedded soft-core processor.It also expounded general structure,design of hardware and software of the cross correlator.The experiment of Matlab simulation verified the cross correlator can achieve cross-correlation operations of random noise signals.The cross correlator has features of good real-time,simple hardware structure and high reliability comparing with the traditional cross correlator,and can meet with the demand of online measurement for correlation flows.
Design of Network Node of Wireless Sensor with Low-power Consumptio
LAI Cheng-yu
2009, 35(5): 115-118.
<Abstract>(66) <PDF>(4)
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Application Research of SCADA System in Long-distance Pipeline of Oil and Gas
YAO Jun, FANG Cheng-hui, CHEN Bi
2009, 35(5): 119-122.
<Abstract>(45) <PDF>(2)
Abstract:

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