1996 Vol. 22, No. 4

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Microcomputer-based Automatic Monitoring System of 6kV Live Wire Entangglement
WANG Hong-yan, QI Ku
1996, 22(4): 1-4.
<Abstract>(50)
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This paper describes a microcomputer automatic monitoring system of 6kV live wire entangglement which is based on AC sampling.It uses Fourier series in expanding calculus, to achieve the measuring and calculation of volt,current, power factor and quantity of electricity.Software is taken to achieve multiple functions instead of much more hardware, and has saved much investment in hardware,and minimised daily maintenance.The application of the system is of great significance in improving benefits of power distribution system operation and ensuring the safety of power supply. 更多
1996, 22(4): 5-7.
<Abstract>(26)
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To Achieve Synchronous Control of Sinking Hoist by Programmable Controller
ZHANG Zhao-yong, LIU Bin-kun, HE Ping
1996, 22(4): 8-10.
<Abstract>(56)
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Programmable Controller is used as main controller in synchronously controlling up to 4 sinking hoists,which ensures the safety of sinking stage’s elevation and subsidence in vertical shaft construction.
Intelligent Detector of Steel Wire Tension For Mine Use
HE Nian, XU Suo-gen, GUO Zeng-yua
1996, 22(4): 10-12.
<Abstract>(69)
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The Paper introduces the characteristics,composition and working principle of the intelligent detector of steel wire for mine use.
On-line Monitoring of Ventilator’s Performance Parameters and Communication System
REN Zi-hui, MA Xiao-ping, LI Ming
1996, 22(4): 13-15.
<Abstract>(25)
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The paper introduces a type of on-line monitoring and communication system for mine main ventilator’s performance parameters, and describes the system principle and composition.
Research in Optical Isolation Baseband Transmission in Monitoring and Control System
LIU Xue-ying
1996, 22(4): 15-19.
<Abstract>(59)
Abstract:
The paper analyses and compares the frequency division system and time-division system transmission modes from the points of LS,anti-interference performance and system intelligentialisation,discusses the choice of transmission mode in monitoring system,and the comparisons between baseband and modulation in time-division system.The author describes the way to achieve optical Isolation baseband transmission with demonstrations.
1996, 22(4): 20-23.
<Abstract>(33)
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Research in Application of BCH Code in Underground Leakage Mobile Digital Transmission System
KONG Xiang-chun, ZHANG Guo-ju
1996, 22(4): 23-26.
<Abstract>(41)
Abstract:
The paper initially puts forward the error control technique of BCH code application in underground leakage mobile digital transmission system in mode of FEC,analyses its performance index in the underground leakage mobile digital transmission system use,and shows the program block diagram to achieve (15,5,7)BCH code coding and decoding algorithm with single-chip microcomputer software.
Current Status and Development of Sensors Applied in Coal Mine
XU Meng-fa
1996, 22(4): 27-29.
<Abstract>(42)
Abstract:
In recent years owing to the development of electronics and computer technology, intelligent sensors are developed,which have greatly expanded sensor’s functions and promoted the monitoring and control technology in coal mine.Since coal mine is progressing towards high output and high efficiency,coal mine automation technique and sensor technology will also be adapted to this trend,and develop towards electromechanical integration.
Modular Design in Simulating Board Driver
MA Xiao-ping, WANG Zheng-you, LIU Fu-qiang
1996, 22(4): 30-32.
<Abstract>(82)
Abstract:
The author introduces a type of intelligent simulating board driver,briefly analyses its composition and functions.Owing to the adoption of modular design,the simulating board is better in technical performance than conventional ones,and is highly valued in popularization.
Powered Braking for Rubber-tyred Adhesion/Geared Locomotive
LIN Xiang-dong
1996, 22(4): 33-36.
<Abstract>(29)
Abstract:
The paper introduces 3 main kinds of locomotive powered braking and their mechanical characteristics. Their applications in rubber-tyred locomotives in coal mine underground has unique advantages.
A Novel Track Brake for Trapped Rail Car Use
GAO Wen-cheng
1996, 22(4): 36-39.
<Abstract>(36)
Abstract:
Rail brakes for trapped car use at home and abroad are introduced.Targeted to existing problems,a new type of track brake is designed,which can determine braking force by spring force,also can freely pass existing common switch turnouts in coal mine underground in nonbraking status.
Remote Signal Receiver of High Anti-interference for Underground Belt Nucleonic Scale
DING Bao-hua, SHI Cheng-ping
1996, 22(4): 40-42.
<Abstract>(47)
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In this paper, a simple, practical remote signal receiver of high antiinterference is described. The author detailed anti-interference circuit principle and put forward anti-interference measures in pulse shaping, which provides a simple and reliable approach for underground nucleonic scale signal transmission.
1996, 22(4): 43-44.
<Abstract>(34)
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1996, 22(4): 45-48.
<Abstract>(20)
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1996, 22(4): 49-52.
<Abstract>(58)
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1996, 22(4): 52-57.
<Abstract>(24)
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1996, 22(4): 57-59.
<Abstract>(52)
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Automatic Measuring and Control System of Thickening Process Parameters
YANG Gui-zhu
1996, 22(4): 60-63.
<Abstract>(70)
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Control of water and slurry circuit parameters is the important part of closed-circuit cycle automation for water and slurry circuit in preparation plants, in which thickening is one of the main process.Thickener’s working is determined by the process and the main control parameters vary.The paper introduces the detecting and contro method of process parameters in thickening of floated tailingsdam and the control system achieved by STD-bus industrial control computer.
1996, 22(4): 63-65.
<Abstract>(52)
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