工矿自动化

Design of Automatic Control System of Spraying for Dust Suppression on Coal Face

TONG Xia-min~, KANG Dong-liang~, WANG Hu~, TONG Min-ming~

2010, 36(3): 1-3.

<Abstract>(34) <PDF>(4)

Abstract:
In order to improve environment of coal face,an automatic control system of spraying for dust suppression on coal face was designed.The system can realize positioning function for shearer through infrared emitter boarded on shearer and infrared receiving sensor installed on the supports,and control intrinsic safe type electromagnetic valves on the supports to spray according to the position of the shearer,which can eliminate dust in downwind direction of cutting-head of the shearer and realize function of automatic dust suppression on coal face.The actual running showed that the system solves the problem of automatic spray between supports of fully mechanical coal face and can implement multi-channel barriers and high-efficiency dedusting to a large range and high-concentration dust produced in coal mining,which can reduce dust concentration.

Design of Evaluating Software of In-use Safety Monitoring and Control System of Coal Mine

WANG Yong, DING Rui-qi, FENG Ya-fei, YAN Jun-sheng, ZHANG Wei-guo, L Peng-fei, WANG Xiao-yang, HE Yao-yi, GAO We

2010, 36(3): 4-6.

<Abstract>(23) <PDF>(4)

Abstract:
In view of the problem that performance of safety monitoring and control system of coal mine can’t accord with relevant standards and criterions in actual application,the paper proposed a design scheme of evaluating software of in-use safety monitoring and control system of coal mine.It analyzed principle of the evaluating software,and introduced design and implementation of system information (maintenance) module,analysis and display module of evaluating data and data synchronization function module of the evaluating software in details,and gave operation flow of the evaluating software.Combing with embedded on-line detecting device,the evaluating software can finish evaluating task for performance and use and maintenance of safety(monitoring) and control system of coal mine.

Design of Software Framework of Embedded On-line Detecting Device for Safety Monitoring and Control System of Coal Mine

XU Juan, WANG Xue-ming, ZHANG Li-bin, WANG Cong-xiao

2010, 36(3): 7-9.

<Abstract>(35) <PDF>(5)

Abstract:
The embedded on-line detecting device is main part of embedded on-line detecting system for safety monitoring and control system of coal mine,it is used to on-line detect function of sound and light alarming for methane concentration exceeding preset limit,power off/power recovery control function,function of wind electricity closed-cycle control of methane,control response time of the system,actual patrol period,actual distributed quantity of sensors and stability of methane sensor.The paper introduced design of software framework and work flow and functions of each part of embedded on-line detecting device in details.The design of the software framework makes each function of the software be realized by combination of several subprogram modules and makes each subprogram module run concurrently,which improves running speed of the program.

Implementation of '2+1' Software Backup of Core Server of Coal Mine Gas Monitoring Network

ZHOU Pan-dong

2010, 36(3): 9-12.

<Abstract>(116) <PDF>(3)

Abstract:

Research of Intrinsic Safety Power SUpply with Self-recovery and Charging Based on PIC Controller

LI Wen-hong, WANG Xia, GUO Bin, TIAN Wen-juan, LUO Ke-xue

2010, 36(3): 12-15.

<Abstract>(30) <PDF>(5)

Abstract:

Monitoring System of Hydraulic Support Test-bed Based on VB and PLC

LI Zhi-feng, ZHAO Zhi-cheng, ZHANG Jing-gang

2010, 36(3): 16-19.

<Abstract>(43) <PDF>(3)

Abstract:
The paper introduced composition,communication principle and implementation and design of key parts of a monitoring system of hydraulic support test-bed based on VB and PLC.The system uses IPC-610-H industrial computer and S7-200 PLC to build up control systems of upper computer and lower computer.The development platform of the upper computer selects VB6.0 which MSComn control is used to realize communication between the upper computer and the lower computer.ODBC database access technology is used to enhance user-oriented data management function and realize storage and query of experiment data.The lower computer realizes functions of process control and data collection of hydraulic support test.The test result and actual application showed that the system can realize automatic control of hydraulic support test-bed and ensure each test for hydraulic support to be finished reliably,and can complete real-time monitoring for loading process of internal circulation of hydraulic support.

DXH-13.2/5 Intrinsically Safe Type Portable Power Supply

LI Xiao-ju

2010, 36(3): 19-21.

<Abstract>(66) <PDF>(5)

Abstract:
According to demands of Shendong mining area of Shenhua Group,DXH13.2/5 intrinsically safe type power supply was designed and technical indexes,structure composition and selection design were introduced in details.The actual application showed that the power supply can provide 5 V intrinsically safe power supply for portable passive instruments of coal mine underground and has features of large capacity,small volume and high safety.

Design of Logistics Substation of Crown Block Based on SoC and Radio Frequency Card Location Technology

DU Wei-hua~, ZOU Ke-wu~, GAO Shu-hong~, WEI Zhi-hua~

2010, 36(3): 22-25.

<Abstract>(18) <PDF>(2)

Abstract:
Taking the design of logistics substation of logistics management system of Fengbao iron and steel plant as example,the paper introduced structure and working principle of the logistics substation in details.It emphatically described features of SoC,location principle of radio frequency card,design of card reader and key technologies of signal demodulation and installation of weighing sensor,and gave software design of the logistics substation. The actual application showed that the logistics substation has characteristics of strong anti-interference,low communication error rate,quick response speed and convenient maintenance.

Design of Underground Lighting Protection System Based on PLC

GAO Yun-guang

2010, 36(3): 25-28.

<Abstract>(20) <PDF>(5)

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Design of Embedded Control System of Position of Fluid Equipment Based on Single-chip Microcomputer and DSP

LUO Yan-lei, ZHU Zheng-long, CHEN Jun-wei, QIU Xue, LI Yua

2010, 36(3): 29-31.

<Abstract>(26) <PDF>(3)

Abstract:
Position control of fluid equipment requires rapid and high accuracy positioning performance,but there are contradiction between rapidity and positioning accuracy.In order to solve the problem,the paper proposed a design scheme of embedded control system of position of fluid equipment based on single-chip microcomputer AT89C51 and DSP TMS320F2812.It introduced design of hardware and software of the system in details.The actual running showed that the system has performance of quick response speed,strong real-time and low power comparing with the traditional analog control system.

Research of Data Collection System Based on DSP + CPLD

QIU Wang-biao, LI Chao, XU Su-heng

2010, 36(3): 32-33.

<Abstract>(26) <PDF>(4)

Abstract:

Influence of Air Flow on Dynamic Response of Catalytic Sensor

TONG Min-ming, WU Guo-qing, LIU Xiao-wen, LI Xue-hua

2010, 36(3): 34-38.

<Abstract>(29) <PDF>(3)

Abstract:
Dynamic response speed is one of the most important performance indexes of catalytic sensor.Based on Fick’s diffusion theorem,the paper built a mathematical model of gas diffusion velocity for catalytic sensor in air flow,and studied influence of air flow on dynamic response of catalytic sensor through experiment.The study result indicated that speed of air flow and angle between air inlet of catalytic sensor and direction of air flow are two critical factors for dynamic response of catalytic sensor.The influence rule is the response time of catalytic sensor will increase,and the response speed and output value of catalytic sensor will decrease with an increase of angle between air inlet of catalytic sensor and direction of air flow,and the response time of catalytic sensor will decrease,and the response speed and output value of catalytic sensor will increase by increasing speed of air flow.

Application of CLGA in Impulsion Pressure Predictio

REN Zhi-ling~, YU Qun~, YU Chao~, HAN Wei-qin~

2010, 36(3): 39-41.

<Abstract>(18) <PDF>(4)

Abstract:
To solve problems of long time of network training,easy to fall into local minimum and easy to early maturity existed in traditional method of impulsion pressure prediction,the paper proposed a method using CLGA to predict impulsion pressure.It introduced basic steps using CLGA to optimize weight and threshold of BP neural network in details and made simulation experiment using Matlab7.1 to build network model on PC.The simulation result showed that the method can improve accuracy of impulsion pressure prediction effectively.

Application of CLGA in Impulsion Pressure Predictio

REN Zhi-ling~, YU Qun~, YU Chao~

2010, 36(3): 41-45.

<Abstract>(31) <PDF>(4)

Abstract:
To solve problems of long time of network training,easy to fall into local minimum and easy to early maturity existed in traditional method of impulsion pressure prediction,the paper proposed a method using CLGA to predict impulsion pressure.It introduced basic steps using CLGA to optimize weight and threshold of BP neural network in details and made simulation experiment using Matlab7.1 to build network model on PC.The simulation result showed that the method can improve accuracy of impulsion pressure prediction effectively.

Research of Physical Layer of Wireless Sensor Network of Coal Face

SONG Jin-ling

2010, 36(3): 45-48.

<Abstract>(19) <PDF>(3)

Abstract:

Design of Area-selected Interlocking Protection of Underground Power Supply System

ZHAO Xue-lei~(, 2), ZHANG Hong-bing~, ZHENG Zheng~, WANG Fu-zhong~

2010, 36(3): 48-50.

<Abstract>(44) <PDF>(3)

Abstract:
To solve the problem of override skip existed in underground power supply system,the paper proposed a new type of area-selected interlocking protection scheme,that is,an intelligent control module is installed in mine-used switch and it works with instantaneous trip protection of existing protection device,so as to realize function of area-selected interlocking protection.The test result showed that the scheme has low cost,high reliability,easy installation,which has certain practicality.

Research of Technology of Power Factor Correction of Boost Converter Based on One-cycle Control

SONG Shu-zhong, NIU Ben, GUO Yi-da

2010, 36(3): 51-53.

<Abstract>(26) <PDF>(3)

Abstract:
One-cycle control is a novel nonlinear control strategy for power converter.The paper introduced design of a power factor correction circuit of Boost converter based on one-cycle control,analyzed control principle of one-cycle control and described implementation of power factor correction circuit in details.The simulation result showed that one-cycle control is suitable for power factor correction of Boost converter and gets good control effect.

Application of Improved p-q Detection Method in D-STATCOM Current Detectio

SHI Li-ping, FAN Li-li, BU Ling-chen, ZHANG Jian-wei, WANG Tai-xu

2010, 36(3): 53-57.

<Abstract>(69) <PDF>(2)

Abstract:
The paper analyzed error cause by ues of traditional p-q detection method to detect harmonic current,reactive current and negative current of load current,and proposed an improved p-q detection method. The improved p-q method makes use of one-phase voltage to construct virtual and symmetrical three-phase voltage to replace real three-phase voltage,it can detect harmonic current,reactive current and negative current when voltages of power network is asymmetric,so as to eliminate error of compensation current detection caused by asymmetric cause.The simulation result validated the detection method.

Simulation of DC Double Closed-loop Speed-regulation System and Its Fuzzy Control

OU Wei-bi

2010, 36(3): 57-60.

<Abstract>(23) <PDF>(3)

Abstract:
The paper gave a simulation model of common DC double closed-loop speed-regulation system and used Matlab to simulate the model,and made a conclusion: the common DC double closed-loop speed-regulation system has a better dynamic and static characteristics and can restrain influence of disturbance on rotation speed of motor.But the system depends on accurate mathematical model,which not only increases solution links but also makes system’s model more complex and may affect reliability of the system.On the basis of the analysis result,the paper proposed a design scheme of DC double closed-loop speed-regulation system based on fuzzy control + PI rotation speed regulator.In the scheme,the current loop still uses common PI regulation and rotation speed loop uses time-sharing action mode of fuzzy controller and common PI(regulation.) The simulation result showed that the new system introduced in fuzzy controller has advantages of high response speed,steady transition and improves system overshoot.

Research of AC Excitation Power Supply of Synchronous Generator Based on Hybrid Modulatio

GAO Ya-li~, XUE Ya-bin~, XIN Yi-bo~(

2010, 36(3): 61-63.

<Abstract>(50) <PDF>(3)

Abstract:
AC excitation technology of synchronous generator can improve capability of leading phase of generator,and it is one of the most effective methods of reactive power compensation.The paper proposed a design scheme of AC excitation power supply of synchronous generator based on hybrid modulation,analyzed composition and working principle of AC excitation system of synchronous generator,introduced control principle of hybrid modulation mode and gave selection and calculation method of key parameters of control circuit of the excitation power supply.The experiment result proved correctness and effectiveness of the scheme.

Application of Information Fusion Technology in Fault Diagnosis of Frequency-conversion Speed-regulation System

ZHU Gao-zhong

2010, 36(3): 64-68.

<Abstract>(33) <PDF>(3)

Abstract:
To solve the problem that common method of fault diagnosis of motor in frequency-conversion speed-regulation system is difficult to judge fault type,the paper proposed a diagnosis method for broken-bar fault of motor based on multi-sensor information fusion.The method extracts characteristics information of broken-bar fault of motor by wavelet packet analysis,then uses D-S evidence theory to fuse and calculate characteristic information of fault,so as to identify fault.The experiment of diagnosis test showed that the method improves precision of fault diagnosis of motor and can meet with the require of real-time diagnosis.

Research of Transparent Gateway between Ethernet and CAN Bus Based on μC/OS-Ⅱ

GEN Pu-long, XU Jie

2010, 36(3): 68-71.

<Abstract>(34) <PDF>(2)

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Design of VGA Controller IP Core Based on NIOS Ⅱ

LIANG Hao~, CHEN Bo~, DING Liang-hua~

2010, 36(3): 72-75.

<Abstract>(24) <PDF>(2)

Abstract:
In view of the problem that LCD controller IP core can only display number and letter,the paper proposed a design method of VGA controller IP core based on NIOS Ⅱ.It gave working principle of VGA,introduced design of VGA controller,and expounded design of VGA controller IP core,namely the designed VGA controller is installed to SOPC Builder.At last,the VGA controller IP core was added in NIOS II system to test its performance.The test result showed that the IP core can display many graphics,images and characters and can realize animation effect,which has a certain practical value.

Design of Labeling Recognition System of Underground Machinery

SHEN Wei-wei, ZHANG Jian-ying, LI Wen-jie, ZHOU Ting

2010, 36(3): 75-77.

<Abstract>(26) <PDF>(3)

Abstract:

Risk Prediction of Ground Subsidence in Mined-out Area

YU Da-peng~(, 2), QIN Qiu-ya~(

2010, 36(3): 78-81.

<Abstract>(29) <PDF>(5)

Abstract:
According to collected data information of mine,the paper used trigonometric function analysis method to determine influence range of ground subsidence in mine-out area.It selected six factors that is roof lithologic character, thickness of losses bed,mining depth,terrain slope,hydrogeology condition and mining degree as evaluation sub-factors of risk prediction of ground subsidence and built a judging model and judging indexes of risk of ground subsidence.It used AHP method to quantify each judging index and get comprehensive analysis judging index which could be divided into three levels of danger area,more dangerous area and stable area.

Development of Calibration Device of Mine-used Gas Sensor

SONG Bai, LIU Zhi-ju

2010, 36(3): 81-84.

<Abstract>(32) <PDF>(3)

Abstract:
The paper introduced design of a calibration device of mine-used gas sensor.It expounded hardware composition of core processing circuit,signal detection circuit and power circuit of the device,and gave flow chart of software program of the device.The result of field trial running showed that the device can finish periodic detection for mine-used gas sensor conveniently and quickly.

Control Method of Acceleration and Deceleration of Stepper Motor Based on Exponential Curve

ZHANG Li-qiang, TAO Shi-zhe

2010, 36(3): 85-88.

<Abstract>(32) <PDF>(3)

Abstract:

Design of Remote Data Transmission System of Mine Based on GPRS

ZHOU Xuan, LI Liang-guang, YU Gang

2010, 36(3): 88-90.

<Abstract>(27) <PDF>(3)

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Research of Monitoring System of Ventilator with Adjustable Moving Vane

LI Hua, WANG Liang

2010, 36(3): 91-93.

<Abstract>(28) <PDF>(3)

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Design of Temperature Collection and Real-time Display System Based on USB

SHI Xiao-mei, WANG Xiang-ting, DING Ping

2010, 36(3): 93-95.

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

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Multi-bit and Multi-parameter Setting and Display Device of PLC Control System

HUA Lu-guang

2010, 36(3): 96-98.

<Abstract>(19) <PDF>(3)

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Bus-type Automatic Weighing System of Vehicle

Jie Xin-chun, WANG Feng-ying, ZHANG Ji-hong

2010, 36(3): 98-101.

<Abstract>(30) <PDF>(3)

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Design of Inverter Monitoring and COntrol System Based on PLC and Configuration Software

ZHANG Shi-lei, ZHAO Xin-qu

2010, 36(3): 101-103.

<Abstract>(29) <PDF>(4)

Abstract:

Selection Design of Controller of Leakage Protector of Coal Mine

CAO Lian-bing, CHENG Hong, BAI Lin-xu

2010, 36(3): 104-107.

<Abstract>(61) <PDF>(4)

Abstract:
The paper analyzed influence of complicated underground circumstance on leakage protector of DC trolley system of coal mine and problem of bad reliability that using single-chip microcomputer as controller of leakage protector,and proposed a design scheme that using PLC with good stability to instead single-chip microcomputer as controller of leakage protector.The paper introduced circuit principle and software design of leakage protector based on S7-200 PLC and indicated leakage protector based on S7-200 PLC existed problem of slow executive procedure of PLC,and proposed a scheme that using KDN-K3 as controller of leakage protector.It made field test of rapidity and stability for the leakage protector based on KDN-K3 PLC.The test result showed that the leakage protector meets with requires of rapidity and stability.

Anti-interference Measures of Intelligent Integrated Protector Used in Mine

BU Ling-chen, SHI Li-ping, FAN Li-li

2010, 36(3): 107-110.

<Abstract>(30) <PDF>(3)

Abstract:

Research of Mine-used Ultrasonic Wave Level Meter with Large Measuring Range

Zhong Li-yu

2010, 36(3): 110-112.

<Abstract>(31) <PDF>(3)

Abstract:

Design of Monitoring and Control System of Underground Drainage Pump