工矿自动化

Study on the Key Technology of Mining Multimedia ISD

QIAN Jian-sheng, CAO Guo-qing, CHEN Zhi-guo, CHENG De-qiang, MA Shan-sha

2005, 31(1): 1-4.

<Abstract>(47)

Abstract:
In this paper, the project and the basic demand of mining multimedia ISDN were presented at the first time. The structure model and the key technology of this system were researched deeply, and its theory and funciton were discussed. At the same time, the following four parts were designed: intrinsically safe and intellectualized network substation for mine, flameproof and intrinsically safe network exchanger for mine, intrinsically safe network video server for mine, intrinsically safe IP telephone for mine.

Mining Multi-function Access Gateway Based on VxWorks

SUN Yan-jing~, XU Xiao-ju~

2005, 31(1): 4-6.

<Abstract>(29)

Abstract:
At the present, all kinds of mining monitoring system co-exist, but they are incompatible with each other. In this paper, a kind of mining multi-function access gateway based on real-time operation system Windriver’s Vxworks was implemented to solve this problem. The gateway supports accessing to internet and browsing and management Web server. It showed the system constitution and how to write multiple task programs in the VxWorks.

Development of a Kind of Multichannel Data Transmitter and Receiver Based on Single-chip Microcomputer

HAO Ying-ji, ZHOU Yu-qing, CHEN Jia-li

2005, 31(1): 7-9.

<Abstract>(32)

Abstract:
A kind of multichannel serial data transmitter and receiver based on single-chip microcompu-(ter) was introduced, which not only has the same function as multichannel serial data card and has pretreatment function for frontend signal, but also can display some important information of the system and check out troubles of the system. The multichannel serial data transmitter and receiver is working well in dispatching and supervision system for railway in Zhengzhou Coal Corp.

Simulation Study on Speed Regulating System of Chopper-fed for DC Motor Based on MATLAB

HUANG Shao-ping, LI Yong-jia

2005, 31(1): 10-12.

<Abstract>(63)

Abstract:
Using Power System Blockset (PSB) and Simulink of MATLAB, a simulation model of double-closed-loop speed regulating system of chopper-fed for DC motor was built, and simulation result was given.

Using B/S System Structure to Realize Real Time Collection of Production Data

LIANG Xiang-hong

2005, 31(1): 12-14.

<Abstract>(53)

Abstract:

Automatic Nondestructive Testing System of Fluorescent Magnetic Particle

ZHOU Jun, LI Xin-hao

2005, 31(1): 15-16.

<Abstract>(34)

Abstract:
The realization of the automatic nondestructive testing system used for cam shafts was introduced. The automatic control system takes a microcomputer as a core. Working process controlling was (realized) by PLC’s serial communication with computer. Rotating of the workpiece of driver of step motor was also controlled by the computer. The crack images are collected in time, which get ready for the next processing and identifying.

A Congestion Avoidance and Control Way about Video Monitoring System in Networks

HU Qing-song~, NIU Guang-dong~, XU Qing-yong~

2005, 31(1): 17-19.

<Abstract>(28)

Abstract:
The characteristic of the video transmission is a large number of data. It will affect the networks greatly and perhaps disable whole networks. The paper analyzed the reasons that caused the congestion in networks because of video monitoring system, and discussed its affect. Then, a congestion avoi-dance and control scheme was proposed.

Implementation of a Linear Phase FIR Digital Filter with CPLD

ZHU You-lia

2005, 31(1): 20-22.

<Abstract>(31)

Abstract:
The realization method of a linear phase filter of finite impulse response (FIR) based on complex programmable logic device (CPLD) was introduced. This paper proposed a adder tree structure with CPLD, implemented linear phase FIR filter with VHDL language and FLEX10K device. The results showed that the method has a better application prospect, good expansibility, strong flexibility and high speed.

Preliminary Study about the Memory Security and Its Applicatio

YIN Jian, ZHENG Yu-sha

2005, 31(1): 23-25.

<Abstract>(51)

Abstract:
The popularization of the computer, development of the network have already brought the mankind into information society, information is playing an important role in the human society. The importance of the information also has decided the necessity of information security defense. The information security can be considered from three respects that, namely the network security, the system are safe and information stores safely. This paper discussd the problems about memory security, and discussed the (basic) requst of memory security and the essential countermeasure correspondingly. As the application this paper analysed the mentality of designing about the “file safe” and “the tool for file deletion”, and introduced their implementation methods.

A New Way of Improvement of Control Function for Mine AC Hoist

WU Yan-hua

2005, 31(1): 25-27.

<Abstract>(46)

Abstract:
Aimed at the improvement of control function for mine AC hoist, an improvement method was (presented). Using a new type of controller instead of original magnetic amplifier and cam disk, which can improve the dynamic characteristic and reliability of the AC hoist.

High Speed Current-intercepting Switch Utilizing MOSFET

WANG Xu-guang, XIAO Hai-rong

2005, 31(1): 28-30.

<Abstract>(35)

Abstract:
Making use of P-MOSFET, the author designed a kind of high speed current-intercepting switch. Being put serially between the load and DC power source, when the load’s current is larger than the magnitude permitted, the power supply can be out off immediately. With such a switch, power source (having) the character of intrinsic safety can be well formed, which can be used in explosive environment.

Design of Computer Collection and Analysis System of Performance Parameters of Reciprocating-pump

CHEN Qing-hua~, GUAN Wei-juan~, LI Song~

2005, 31(1): 30-32.

<Abstract>(38)

Abstract:
The composition, function and design of computer collection and analysis system of performance parameters of reciprocating-pump were discussed in this paper. The practical application has shown that this system has the advantages of high reliability, perfect function, convenient for operation and low cost.

Study on New General Dispatching Information Communication System of Coal Mine

WANG Qi~, WANG Hui~

2005, 31(1): 33-35.

<Abstract>(41)

Abstract:
In order to realize informatization of mine, new general dispatching information communication system of coal mine is valued in all directions. The paper introduced the design and key technology of this system based on computer network of multimedia and optical fiber transmission.

An Inspection System of Machanical Characteristic of Vacuum Breaker Based on VI

SUN Hong-ge, ZANG Yi

2005, 31(1): 35-37.

<Abstract>(41)

Abstract:
In this paper, a design scheme about the inspection system of mechanical characteristic of vacuum breaker based on virtual instrument was put forward. Its design principle was also analyzed in detail. The design was optimized by virtual instrument, so the agility and the reliability of the system were improved.

Testing System of Plug in Unit of Compositive Protector Based on EDA Module and Computer

WEN Zhi-ming

2005, 31(1): 37-39.

<Abstract>(44)

Abstract:
Using testing system of plug in unit of compositive protector based on EDA and computer, to realize detection parameters of overload, leakage, short-circuit, off-phase, insulation monitor of all kinds of plug in unit of electrical compositive protection for high and low-tension voltage switches, magnetic starter in coal mine.

Design of Self-adaption and Circuit Selection Portection Device of Mine High-voltage

WANG Qi-ju

2005, 31(1): 39-40.

<Abstract>(41)

Abstract:

Development of the Device with Intelligent Reactive Compensation and Compositive Protection of Asynchronous Motor

DU Zhao-wen, YU Qu

2005, 31(1): 41-43.

<Abstract>(64)

Abstract:
The structure, principle, testing methods of electrical parameters of the device with reactive compensation and copmpositive protection of asynchronous motor based on ADμC812 single-chip microcomputer were introduced. The device has many advantages such as simple in structure, reliable in working, strong in adaptability.

Information Management of Automatic Control System for Whole Mine

SONG Bai

2005, 31(1): 44-45.

<Abstract>(55)

Abstract:
According to the requirements of network of monitoring and control of production and safety, auto-mation of production process and dispatching and command, design principle and implementation scheme of computer information management system were put forward.

Design and Application of Computer Control System of Blending and Feeding for Blast Furnace

LUO Mei-lian~(, 2)

2005, 31(1): 46-48.

<Abstract>(39)

Abstract:
This paper mainly introduced the process control system of blending and feeding for blast furnace based on Siemens S7 series PLC and industry PC. Configuration software WinCC6.0 and Visual Basic6.0 were used to monitor and manage process data. Development environment for basic automation system that used to realize logical interlocks and pulse measurement is Siemens Step 7 V5.2. The way how to choose and exchange hopper automatically and automatic precise blending could meet the desire of process control system.

Application of ASP Technology in Network Monitoring System

SUN Xi-long, HE Feng-you, SONG Chang-xi

2005, 31(1): 48-50.

<Abstract>(30)

Abstract:

Over0voltage in Sunning of Soft Starter and Its Protection Measurement

HU De-chun, YANG Wei-yi

2005, 31(1): 50-51.

<Abstract>(55)

Abstract:

Discussion on Automatic Coal Blending System and Its Applicatio

KOU Chuan-qia

2005, 31(1): 52-54.

<Abstract>(50)

Abstract:
How to realize the antomation of coal blending system was discussed in details. The hardware/software structure of the system and technical principle of auto-proportioning, and main functions were also described. The stability and precision of coal blending were have been improved since the system was applied.

Common Fault Analysis of Steel Wire Belt Conveyor in No.1 Coal Mine of Xiejiaji and the Reform of Its Protection Device

DU Yong-hua

2005, 31(1): 54-55.

<Abstract>(38)

Abstract:

Wide Band Access of Enterprise and Its APplication Experience

GAO Xin-ping, ZANG Jin-hua, CHEN Fu

2005, 31(1): 56-57.

<Abstract>(31)

Abstract:

Research on Cooling Instrument of Electrical Device in Airtight Shelly of Mine Equipment

XU Zi-ping, SUN Yu-ping