工矿自动化

Research on Intelligent Infrared Detector for Carbon Monoxide Used in Mine

LIU Zhong-qi, WANG Ru-li

2004, 30(4): 1-4.

<Abstract>(26)

Abstract:
Using infrared technology to detect the concentration of carbon monoxide. The system was controlled and processed by single-chip microcomputer intelligently. Double lamp-houses and double detectors was adopted to compensate the influence of impure gases and dusts. Temperature and pressure of surroundings were compensated by algorithm, and kinds of interface to fulfill keyboard, display, alarm and up-down functions were designed.

Design and Implementation of IP Network Based on Real-time Multimedia Application System

TIAN Hong-peng

2004, 30(4): 4-7.

<Abstract>(13)

Abstract:
Real-time Transport Protocol (RTP) and Real-time Transport Control Protocol (RTCP) of network based on real-time multimedia application were discussed at first. Then on the platform of Microsoft’s DirectShow, two sets of DirectShow filters were constructed to implement sending and receiving of audio and video data on IP network. Furthermore, a model was proposed to develop net-based real-time multimedia application, that is, COM-based programming + real-time transport protocol. Finally, the experiments showed that applications based on the model can achieve good real-time, strong error-tolerance and extensibility, high reusability and good inter-operability.

Design of a New Protection System of High-voltage Asynchronous Motor

HU Wei, WANG Fu-zhong

2004, 30(4): 8-10.

<Abstract>(20)

Abstract:
The paper analysed the status when the motor is running. According to the fault features of motor, it put forward the protection system of motor based on 196 series single-chip microcomputer. It also put up establishment and derivation of mathematical model in algorithm. In addition it carried out optimistic design about hardware and software, especially introduced complex programmable logic device ISPLSI-1032E gate array, which made the system become more concise and stable. The protection system has many characteristics such as rapid velocity, strong anti-interference, powerful protection etc.

Study on Fuzzy-PID Control of Permanent Magnet Linear Synchronous Motor of Vertical-moving

FU Zi-yi~, ZHANG Hua~, ZHANG Xia~

2004, 30(4): 10-12.

<Abstract>(19)

Abstract:
It is not easy to build accurate mathematical model of permanent magnet linear synchronous motor (PMLSM) of vertical-moving because of its special structure and special eddy-effect. In this paper, a Fuzzy-PID controller was designed for PMLSM. Simulation results showed that this controller has good control effect.

Development of Component-based N-tier Distributed System

XU Xia, ZHU Chang-ping, XU Hai-ya

2004, 30(4): 13-16.

<Abstract>(35)

Abstract:
The paper presented a new framework for component-based n-tier distributed system.Combining with the development process of master planning subsystem(MPS) in the manufacturing system, the design and implementation method of business logic tier was given in details and the deployment of components was also demonstrated.

Application of Fuzzy Control in Air Supply System of Coal Mine

CHEN Xia

2004, 30(4): 17-19.

<Abstract>(17)

Abstract:

2004, 30(4): 19-21.

<Abstract>(22)

Abstract:

Design and Implementaion of Collecting Card of Image and Data Based on EPP Protocol

PAN Zhi-gang~, WANG Xiao-chen~, GAO Yu-lin~

2004, 30(4): 22-25.

<Abstract>(24)

Abstract:
Collecting card of image and data based on parallel port protocol(EPP) can be applied to notebook PC and make data collecting equipments more portable.In this paper,EPP protocol was introduced and the logic of FIFO read/write operations and data read cycle of EPP protocol were realized with VHDL language.Meanwhile, hardware structure graph of data collecting card and the flow chart of display programme were given.

Communication between MCGS Configuration Software and ST2200

SHEN An-wen, LIU Shan, ZHENG Ding-fu, BAI Lei

2004, 30(4): 25-27.

<Abstract>(37)

Abstract:
Communication between ST2200 multifunctional loop controllers and MCGS configuration software were studied in this paper. The event-driven serial communication model and a special communication mo-dule of user were used to implement the dynamic data exchange. The application result showed that this method is feasible.

Data Transmission Technology Based on DTMF Signal

GUO Xu, WEI Jia-yua

2004, 30(4): 27-29.

<Abstract>(14)

Abstract:
It need not special data transmission line and has high reliability when DTMF signal is used in data transmission. The paper discussed switching between DTMF signal and binary data as well as sending and receiving of DTMF signal.

Application of Laser Range Finder Sensor in Carbonization Thr-vehicle Interlocking System

DONG Ke-jian, JIAO Shi-tong, JIA Shao-rui, XUE Hong-mei, LI Li-hong, AN Xi

2004, 30(4): 29-31.

<Abstract>(24)

Abstract:
Laser range finder sensor is an untouched distance-measure apparatus. It has a significance in coal mine, metallurgy, petrifaction and other enterprises. The paper introduced the measure principles, system configure, software protocol of laser range finder sensor and its application in the carbonization thr-vehicle interlocking system.

Design and Implementation of Purchasing Management and Information System for Electromechanical Device in Coal Enterprise

LI Gang, MIAO Yan-zi

2004, 30(4): 32-33.

<Abstract>(6)

Abstract:

Multimedia Integrated Services Digital Network Used in Mine

LIU Fu-qiang~, OUYANG Yi~, GAO Pi-zhou~

2004, 30(4): 34-36.

<Abstract>(23)

Abstract:
After brief explanation of monitoring and control system of coal mine, multimedia integrated services digital network (MISDN) was brought forward as well as the configurations and characteristics of (MISDN.)

2004, 30(4): 37-38.

<Abstract>(14)

Abstract:

Using Modern Information Technology to Improve Management Level of Materials Circulation of Coal Enterprise

ZHAO Yu-bo, HOU Jie

2004, 30(4): 39-41.

<Abstract>(15)

Abstract:

Application of Universal Converter in Low-frequency Brake of AC Hoist

ZHENG Yue-xia, YAN Wen-rui, ZHU Zhe

2004, 30(4): 41-42.

<Abstract>(32)