矿山泄漏电缆通信系统的解决方案_王正祥

第３５卷　２００７年第１０

期

１６２Mining & Processing Equipment

１６２

前 沿

第３５卷　２００７年第１０

期

１６３

Mining & Processing Equipment

１６３前 沿

第３５卷　２００７年第１０

期

１６４Mining & Processing Equipment

１６４

前 沿

Ventilator Malfunction Diagnosis….....YI Jiangang et al.(112-115) A kind of intelligent malfunction diagnosis approach based on fuzzy immune net clustering analysis was proposed in this paper to solve the problem that the prior information was needed in traditional malfunc-tion diagnosis. Compared with the other algorithms, this approach could overcome the problems of dynamic determination of classes and fuzzy border, was a better intelligent information processing al-gorithm without supervision. Finally, an application was proposed to prove the validity of the algorithm. 【Descriptors】　Fuzzy immune net Clustering analysis Malfunction diagnosis

Study and Control to Manufacturing Quality of RD Series Pla-netary Reducer….............................................LI Yin et al.(115-118) The paper detailedly analyzed the factors that affected manufacturing quality of RD series planetary reducer used for JT(K)YB-＊×＊XP hydraulic anti-explosion hoist and winch, revealed the possibility and feasibility to improve product quality, and narrated major parts about its manufacturing and assembly course on concrete operation detail, which could be reference at actually manufacturing this kind of re-ducer and has guidance sense for improving product quality.

【Descriptors】　Hoist Planetary reducer Quality control Analysis to

influential factor

Study to Dynamic Characteristic of a New Kind of Electronic-

Hydraulic Proportional Valve….........ZHU Jianxin et al.(118-121)

The paper introduced the structure and working principle of a kind of

foreign electronic-hydraulic proportional valve which is based on

twin valve insert control, and compared with the normal hydraulic

valve which is based on single valve insert control. Considering steady

hydraulic force, instantaneous hydraulic force, pre-compression of

spring, valve leakage and gravity, the paper established the mathe-

matical model of the valve and concluded the transfer function of the

system, applied MATLAB to make simulative study to valve dynamic

characteristic, obtained step response curve and the bode diagram.

The result shows that twin valve insert control is more effective and

flexible compared to single valve insert control of normal hydraulic

valve. On condition that the pre-compression of the spring located at

the end of the main valve insert and the gravity of the main valve

insert are ignored during analysis to dynamic characteristics, the valve

is of well responding speed and ideal bandwidth, and major factors

affects responding speed and bandwidth is flow gain of pilot valve

and elasticity coefficient of the spring located at the end of main valve

insert. 【Descriptors】　Electronic-hydraulic proportional valve Dy-

namic characteristic Twin valve insert Symmetry cylinder

Adjustment for Function Parameters of Transducer.........................….........................................................DANG Lihui et al.(122-125)

There are lots of function parameters in transducer, many parameter

keeps initial value at leave factory in factual application. However,

some parameters need to reset and adjust according to factual circum-

stance since they have much relationship with actual employment

circumstance. The paper introduced the adjustment approach with

SENLAN transducer. 【Descriptors】　Transducer Parameter Adjust-

ment

tion Analysis…................................YANG Fengwei et al.(144-145)

The paper described the potential safety trouble in power supply sys-

tem with 660V transformer and corresponding solution, and con-

ducted detailed discussion combining factual example. Meanwhile, it

also put forward the expectation towards relevant scientific and re-

search institute, hoping homemade MCCB with high-rupturing capac-

ity could be developed early. 【Descriptors】　660V power supply

Transformer Three-phase short-circuit current MCCB Rupturing

capacity

Design to Gas Density Detector Based on AVR Single-Chip

Processor…....................................LIU Zhengquan et al.(146-148)

Based on the analysis to cause of gas explosion, the paper suggested to

prevent this kind of accident by detecting gas density, and presented

the scheme for designing AT90S8535 gas density detector on the

basis of AVR single-chip processor. In this system, gas sensitive probe

and CH217 chip was applied to detect gas density in shaft, and accord-

ing to the output alarming signal and feedback voltage value of sensor

circuit, the single-chip processor control voice chip to report gas den-

sity every each fixed time and timely alarm at dangerous conditions.

LED numerical tube served as aid module to dynamically display gas

density in percent. While gas density collected by single-chip proces-

sor equal to preset data, it would be transferred to upper-position

processor by RS-485 to make synthetic analysis. 【Descriptors】　Gas

Density AVR single-chip processor CH217 chip ISD2560 voice chip

RS-485 bus

Synthetic Monitoring System Used in Shaft Spot Based on Zigbee…

...............…...........................................YANG Xing et al.(149-151)

The paper offered a kind of wireless communication synthentic moni-

toring system used in shaft spot based on Zigbee and twin MCD

structure, analyzed the system about its systematic structure, hardware

configuration, interface circuit and working principle etc. The system

realized the collection of shaft surrounding parameters such as

temperature, humidity, density of gas, carbon monoxide and oxygen,

complicated calculation and long-distance wireless communication. It

proved reliable and real-time by experiment. 【Descriptors】　Moni-

tor Zigbee technique Twin MCU

Discussion to Energy Saving and Consumption Reduction of Active

Lime Rotary Kiln and Resource Synthetic Utilization……….........

..................................................................ZHANG Kaibo(152-154)

Initiated with guaranteeing continuous development of lime industry,

the paper analyzed the structure of major machine, burning unit and

gas handling system in burning system, narrated the resource such as

lime mine, gas with low heat capacity, dust and carbon dioxide, dis-

cussed the energy saving and consumption reduction of active lime

rotary kiln and approach for resource synthetic utilization, and of-

fered some suggustions.【Descriptors】　Lime industry Rotary kiln

Energy saving and consumption reduction Synthetic utilization Con-

….....

....................................................WANG Zhengxiang et al.(162-164)

The paper offered the solution scheme for leakage cable communica-

tion system, introduced leakage cable communication technique about

its basic theory and structural unit from voice communication, data

transmission and system for locating the identification card of person

and auto, analyzed solution scheme for each communication system

and systematic integration approach. 【Descriptors】　Leakage cable

Communication Solution scheme

Charcteristic and Technical Trouble of Pure Water Hydraulic Driv-

ing Technique…...........................CHAI Guangyuan et al.(167-168)

That pure water serving as media in hydraulic driving technique is

one of study direction, which is paid wide attention in domestic and

foreign hydraulic field in recent years. The paper detailedly discussed

pure water serving as media of hydraulic driving about its advantage

and some generally existed problems, summarized pure water hy-

draulic driving about its current study status and prospect at home and

abroad, and indicated its developing trend, application field and key

technique trouble. 【Descriptors】　Pure water hydraulic driving tech-

nique Driving media Key technical problem