工矿自动化

Design of Real-time System of Working Condition Monitoring and Fault Diagnosis of Conveyors of Fully-mechanized Face

LEI Zhi-peng, SONG Jian-cheng

2010, 36(7): 1-5.

<Abstract>(64) <PDF>(10)

Abstract:
In order to meet requirements of high efficient and reliable running of complete conveyors on fully-mechanized face of coal mine with annual production capacity of 10 million tons,a real-time system of working condition monitoring and fault diagnosis of conveyors of fully-mechanized face based on PLC was designed.The hardware constitution of the system was introduced briefly and the whole function and realization of the system's program were expounded in details.The system integrates monitoring of running state,detection of running parameters,data recording and fault diagnosis as a whole and has functions of remote and in situ monitoring and fault diagnosis for working condition of speed reducers and motors of complete conveyors on fully-mechanized face.The debugging results in field showed that the system has characteristics of stable running,accurate data display,and high reliability of fault diagnosis.

Design of Embedded Black Box of Electrical Haulage Shearer

CHEN Hu, ZHANG Yang, ZHANG Fu-jia

2010, 36(7): 6-9.

<Abstract>(39) <PDF>(7)

Abstract:
In view of working environment and characteristics of shearer of coal mine underground,a design scheme of hardware and software of embedded black box of electrical haulage shearer was proposed,which was designed by use of ARM microprocessor.The black box is used for recording running data and working environment parameters of the shearer,and has important effect to establish fault diagnosis system of electrical haulage shearer and improve reliability and maintainability of electrical haulage shearer.The actual application showed that the black box has reliable performance and can meet applying requirements.

Design of an On-line Detecting System for Dielectric Loss of Mine-used High-voltage Cable

DING Wei-min, XU Chun-yu, SONG Jian-cheng

2010, 36(7): 9-12.

<Abstract>(41) <PDF>(5)

Abstract:
In order to solve problems of consuming too much time and resource and unstable precision caused by environment of existing off-line detecting method for dielectric loss of high-voltage cable of coal mine underground,a micro-current sensor was designed for measuring micro grounding current of cable's earth line,and by use of the sensor,an on-line detecting system for dielectric loss of mine-used high-voltage cable was designed based on zero-crossing point comparing method.The composition and on-line detecting principle of the system were introduced.The results of simulation and test showed that the system has stable performance,high measuring precision and strong anti-interference ability,and can on-line measure dielectric loss of high-voltage cable accurately.

Design of Electrical Control System of EML340 Mode Continuous Shearer Based on S7-300 and Its Implementatio

ZHOU Xu

2010, 36(7): 13-15.

<Abstract>(40) <PDF>(5)

Abstract:

Design of Mine-used Multi-parameter Sensor Based on MSP430F149

YANG Fa

2010, 36(7): 15-18.

<Abstract>(70) <PDF>(5)

Abstract:
In order to solve problems of disorderly wiring and inconvenient install and maintenance of sensors caused by single-parameter measurement of exsiting sensors used in safety monitoring and control system of coal(mine,) a design scheme of(mine-used multi-parameter) sensor was(proposed.) The(multi-)parameter sensor is designed by use of MSP430F149 single-chip microcomputer.It can transmit collected signals of gas concentration,CO concentration,O_2 concentration and temperature to LED for displaying after data processing and output alarming signal.Some testing results showed that the multi-parameter sensor has high precision,good stability,and strong anti-interference ability.

Development of Experimental Device of Belt Centralized Control System of Coal Mine

WANG Xiu-jing~, XU Wen-shang~, PAN Hui~, HUANG Ze-biao~

2010, 36(7): 18-21.

<Abstract>(58) <PDF>(5)

Abstract:
An experimental device of belt centralized control system was developed by use of AT89S52 single-chip microcomputer and(VB6.0) software development platform under background of design and application of belt centralized control system of coal mine.The experimental device has a friendly monitoring interface of upper computer,and the upper computer can communicate with the single-chip microcomputer by RS232C and real-timely monitor faults of belt deviation,over speed,temperature,tearing and others.The experimental device reproduces actual working environment and process of belt transport system of coal mine in laboratory,it not only can be applied in actual production,but can train students' innovation awareness and capacity through the secondary development.

Remote Update System of ARM Software Based on TFTP

LI Jun, WANG Jin-hai

2010, 36(7): 22-25.

<Abstract>(57) <PDF>(4)

Abstract:
In order to resolve problems of maintenance and upgrade of embedded products in unattended area,a design scheme of remote update system of ARM software based on TFTP protocol was proposed.The system is mainly composed of LPC2290 micro-controller,DM9000E network card chip,SST39VF1601 NOR FLASH and MT45W4MW16 RAM.It can remotely update application software of ARM micro-controller without operating system by use of bootloader technology and TFTP protocol of Ethernet.The testing result showed that the system can ensure correct transmission and storage of data,and reduce difficulty of upgrade and maintenance of ARM embedded system software greatly.

Research of Authentication Method of Intrinsically Safe Interconnection of Coal Mine Monitoring and Control System

ZOU Zhe-qiang

2010, 36(7): 26-29.

<Abstract>(53) <PDF>(5)

Abstract:
According to characteristics of complex structure and various interconnection equipments with increasing quantity of coal mine monitoring and control system,the paper analyzed applicability of traditional authentication method of intrinsically safe interconnection system in China,interface parameter authentication method in the other countries and a series of intrinsically safe standards to intrinsically safe interconnection authentication of coal mine monitoring and control system in China,pointed out that the judging criterion of intrinsically safe performance of coal mine monitoring and control system is GB3836.4-2000 equ IEC 60079-11:1999 at present,and proposed a scheme that intrinsically safe interconnection authentication of non-bus mode interface equipments of coal mine monitoring and control system uses parameter authentication method and the authentication of bus mode interface equipments should use system authentication method at present.It introduced implementing key points...更多 of parameter authentication method and system authentication method in details and the way of implementing parameter authentication of intrinsically safe interconnection of bus mode interface equipments in the future.In addition,it proposed design principle of interface equipments of coal mine monitoring and control system and further research direction of authentication method of intrinsically safe interconnection of coal mine monitoring and control system.The paper will be good for development of parameter authentication method of intrinsically safe interconnection of interface equipments of coal mine monitoring and control system.

Design Requirements of Lithium Battery in Intrinsically Safe Circuit

WANG Qi, WANG Chu

2010, 36(7): 30-32.

<Abstract>(69) <PDF>(18)

Abstract:
The paper introduced safety performance requirements of lithium battery and design requirements of battery and battery pack in intrinsically safe circuit at home and abroad,analyzed common problems in designing battery of intrinsically safe circuit and corresponding countermeasures,and proposed design requirements to insure safety performance of lithium battery in intrinsically safe circuit.Besides, it proposed requirements of use and maintenance of intrinsically safe devices power-supplied by battery.

Characteristics of Informatization Management of Coal Enterprise

ZHU Zhe-jun~, SUN Ji-ping~

2010, 36(7): 33-35.

<Abstract>(65) <PDF>(6)

Abstract:
The paper firstly introduced characteristics of informatization management of coal enterprise as follows.(1) Resource development touchs upon many aspects.(2) Management of safety production is essential.(3) Production and product of coal is decided by geological condition of coal storage.((4) Management) and maintenance of facilities should be highlighted.(5) Stocking facilities and materials are not included in final products.(6) A great deal of facilities are centralized purchased.(7) Coal sale is related to transition.(8) Coal production influences environment.(9) Production design is more important than product design.Then it analyzed the characteristics of informatization management of coal enterprise form the views of informatization management of production,transition,and sales.The paper could guide the study,design,and realization of informatization system of coal enterprise.

Application Research of Cognitive Radio Technology in Coal Mine Underground

TANG Liang, ZHANG Shen, GAN Ling, DU Ya

2010, 36(7): 36-39.

<Abstract>(54) <PDF>(5)

Abstract:
In order to solve the problem of bad reliability of data transmission of wireless communication system of coal mine underground because the system's parameters such as carrier frequency,modulation mode are settled and so it ca't adapted to change of tunnel's channel model,the paper proposed a scheme of applying cognitive radio technology in wireless communication system of coal mine underground.The cognitive radio technology can perceive frequency spectrum and channel model of tunnel through which radio signal of communication system passes,and real-timely and self-adaptively adjust some transmission parameters such as carrier frequency,modulating mode and so on,so as to optimize transmission performance of wireless communication network of coal mine underground.The paper comprehensively analyzed the feasibility of cognitive radio applied in coal mine underground too.At last,it concluded concrete realization mode of cognitive radio applied in coal mine underground.

Research of Action Range and Mechanism of Coal-gun Phenomenon in Drifting Process

WANG Jun-hui~, LI Bao-fu~, ZHANG Tao~

2010, 36(7): 39-41.

<Abstract>(54) <PDF>(5)

Abstract:
In order to explain action range and mechanism of coal-gun phenomenon,numerical simulation research was maken for deforming and destroyed process and acoustic emission phenomenon of surrounding rock in drifting process of a coal mine by use of RFPA2D numerical calculation software.The simulation result showed that coal-gun phenomenon takes place in range of 15 m away from two sides of tunnel and 10 m away from roof in extraction tunnels of mine working face,and the phenomenon is a releasing process of huge amounts of elastic energy accumulated in process of deformation and destroy of tunnel,and it is only a dynamical phenomenon with relatively small energy,not portent information of rock burst.

Simulation Analysis of SIngle-phase Grounding of Distribution Network and Its Research

TIAN Shu, WANG Xiao-wei, WANG Juan-jua

2010, 36(7): 42-45.

<Abstract>(67) <PDF>(3)

Abstract:

Speed-regulation System of BLDC Motor Based on P-Fuzzy Self-adaptive PID Control

LIU Xing-yan, SHANGGUAN Xuan-feng, DONG Yang-yang, ZHANG Han-yu

2010, 36(7): 45-49.

<Abstract>(47) <PDF>(3)

Abstract:
The paper analyzed the mathematical model of BLDC motor,proposed a novel P-fuzzy self-adaptive PID control method and established a simulation model of speedregulation system of BLDC motor based on P-fuzzy self-adaptive PID control in Matlab/Simulink.In the system,a current hysteresis is applied in the current loop and a hybrid scheme of P and fuzzy self-adaptive PID control is applied in the speed loop,thus speed-regulation control function of double close loops is realized.The simulation result showed that the speed-regulation system of BLDC motor based on P-fuzzy self-adaptive PID control has half-shortened response time,less overshoot,and stronger robustness and self-adapting ability compared with the speed-regulation system based on normal PID control.

Design of Double Sides LSRM

JIN Xin~, ZAN Xiao-shu~

2010, 36(7): 50-53.

<Abstract>(63) <PDF>(3)

Abstract:
The constitution,working principle and size design method of double sides LSRM were introduced and size design result of a LSRM prototype was given.Distribution rule of LSRM's magnetic field was analyzed by use of finite element method and sectioned magnetic field was consulted,so as to get the maximum induction value,the minimum induction value and the number of windings. The testing result showed that the starting power of the LSRM prototype is large and it would not affected by direction of current.But there are some problems of pulse and noise in starting,which could be solved by use of optimization of structure design and control algorithm.

Research of Restraining Harmonic Circulating Current of Paralleled Inverters System

LIU Yan-bing, DING Zhe, WANG Xian-bo, WANG Jun-xiao

2010, 36(7): 54-57.

<Abstract>(53) <PDF>(3)

Abstract:
In order to solve the problem of harmonic circulation current in paralleled inverters system,a method of restraining harmonic circulating current was proposed based on analysis of mathematic model of single inverter with harmonic disturbance and produced principle of harmonic circulating current in paralleled inverters system,in which dual-ring control mode of current and voltage was used for single inverter of paralleled inverters system and coupling inductances were added to output ends of inverters.The theoretical analysis and simulation result verified the validity of the method.

Application of Detecting Method with Constant Temperature in Detecting Mixed Gas

YU Zhen~, ZHANG Zheng-yong~

2010, 36(7): 57-61.

<Abstract>(52) <PDF>(4)

Abstract:

Application Research of Apriori Algorithm of Association Rules in Production Scheduling Subsystem of Coal Mine

DAI Ming-jun, CHENG Can, SHEN Zhong-ze

2010, 36(7): 62-64.

<Abstract>(47) <PDF>(3)

Abstract:

Design of SGAP Based on Linux Server and Its Realizatio

XU Xiao-li

2010, 36(7): 65-68.

<Abstract>(74) <PDF>(3)

Abstract:

Optimization Design of DC Electro-magnet Based on Magnet

GAO Cai-xia, WANG Fu-zhong, JIAO Liu-cheng

2010, 36(7): 68-70.

<Abstract>(60) <PDF>(3)

Abstract:

Research of Power Supply System for Mine Safety Monitoring

XIE Jun-sheng~, WANG Sen~, YOU Qing-shan~

2010, 36(7): 71-75.

<Abstract>(45) <PDF>(5)

Abstract:
The paper introduced principle of electrical explosion proof and expounded developing situation of intrinsically safe explosion proof mode form the views of theoretical research and product development at home and abroad.It emphatically discussed problems existed in power supply system for mine safety monitoring at home at present,namely adaptability of the system's input,intelligence of the system,optimum design of standby power supply,anti-interference ability of the system,and intrinsically safe power supply with high capacity.It introduced a novel power supply system for mine safety monitoring,which has good anti-interference performance and functions of intelligent monitoring of the system's running parameters,early warning,and fault diagnosis.

Discussion of Realization Method of Gas Locking for Ventilation and Power SUpply of Safety Monitoring and Control System of Coal Mine

CAI Chong

2010, 36(7): 75-78.

<Abstract>(61) <PDF>(3)

Abstract:

Application of Fault Protection for Asynchronous Motor of Shearer and Its Research

WANG Jin~, CHEN Xia~, RUI Guo-hong~

2010, 36(7): 79-83.

<Abstract>(35) <PDF>(3)

Abstract:

Discussion of Intelligent Monitoring for Belt Conveyor Control System by Use of Color and Texture Feature

HUANG Dan-qun, GU Chun-yu

2010, 36(7): 83-86.

<Abstract>(63) <PDF>(3)

Abstract:

Research of Detecting Method for Deformation and Destroy of Rock

WEI Shi-min~, CHAI Jing~

2010, 36(7): 86-89.

<Abstract>(61) <PDF>(5)

Abstract:

Technology of Hydraulic Speed-regulation with AC Frequency-conversion and Its Applicatio

JIA Hui-hui, CHEN Ling

2010, 36(7): 89-91.

<Abstract>(52) <PDF>(4)

Abstract:

Realization of Remote Communication of Mine Fireproof Grouting Monitoring System Based on Wireless Bridge

MIAO Shuang-tao~(, 2), JIANG Shu-guang~(, WU Zheng-yan~, LIANG Wei-wei~(

2010, 36(7): 92-96.

<Abstract>(53) <PDF>(3)

Abstract:
In order to solve problems of complex wiring and high cost of existing wiring communication mode in mine fireproof grouting monitoring system,the paper proposed a realization scheme of remote communication of mine fireproof grouting monitoring system based on wireless bridge,introduced three link modes of wireless bridge and their characteristics of wireless communication,and expounded a scheme based on AX9800 11A wireless bridge and link mode of point to point,which realized remote communication function of fireproof grouting monitoring system of Jining No.2 coal mine.The test result showed that the scheme's valid distance of wireless communication is more than 10 km,valid transmission speed is 10 Mbit/s,and delay time of video signals is less than 5 s.Besides,the scheme has reliable transmission performance and perfect communication quality.

Design of Centralized Monitoring and COntrol System for Underground Substatio

LUO Hui~, WANG Wen-liang~, JIA Kun~, ZHANG Ji-feng~

2010, 36(7): 96-98.

<Abstract>(58) <PDF>(3)

Abstract:

Design of Gas Drainage Monitoring and Control System for Coal Mine and Its Realizatio

FENG Tao, WANG Fu-kun, WANG Li

2010, 36(7): 99-101.

<Abstract>(55) <PDF>(5)

Abstract:

Data Collecting System for Mechanical Equipments in Continuous Mining Working Face Based on Zigbee

YANG Ji

2010, 36(7): 101-103.

<Abstract>(41) <PDF>(3)

Abstract:

Design of Selective Leakage Protection Circuit Based on Method of Amplitude Discrimination and Phase Discriminatio

FAN Yi-long~, LI Hang~, YOU Guo-dong~

2010, 36(7): 104-106.

<Abstract>(61) <PDF>(5)

Abstract:
The paper proposed a design scheme of selective leakage protection circuit based on method of amplitude discrimination and phase discrimination for electrical control equipments of fully mechanized devices of coal mine underground.The selective leakage protection circuit applied the principle that the phase of zero-sequence current in fault line is in contrast to the one in non-fault line and the phase of zero-sequence current delays the phase of zero-sequence voltage in fault line.It realized function of selective leakage protection for electrical control equipments of fully mechanized devices of coal mine underground through comparison of phases of zero-sequence current and zero-sequence voltage as well as their amplitudes and the setted amplitude.The practice showed that the circuit has strong adaption ability,flexible application,and good reliability.

Application of Analysis of Pump's Pressure Monitoring Data in Automatic Contryl System of Mine Pump

WANG Dong-ping~, DU Ren-qing~

2010, 36(7): 106-108.

<Abstract>(60) <PDF>(4)

Abstract:

Design of Safety of Production Network in Coal Enterprise

LIU Yuan-yuan, LI Ya-zhe, LIU Jian-kang

2010, 36(7): 109-111.

<Abstract>(67) <PDF>(11)

Abstract:

Application of Full Mine Integrated Automation System in Shanmushu Coal Mine

ZHANG Jian~, TANG Jun~, DENG Rong~