1Research of Detecting System of Wire-rope Tension of Multi-rope Hoister Based on Vibration Wave MethodWANG Qin-xian, LI Hong-lei, YANG Zhao-jian1-42Design of a New Type of Infrared Data Collector with Low-power Consumption and Its ImplementationWANG Cheng-yi, GUO Xiu-mei, CONG Xiao-yan4-73Design of a Spray System of Hydraulic Support of Thin Coal SeamWANG Yue-yong, WEI Dong-liang, TIAN Jia-bao, XUE Ren-long8-104Design of Monitoring and Control System of Wind-PhotovoltaicDiesel Power Generating System Based on RS48510-135Application of XMP3 Drawer Model Low-voltage Switch Cabinet in Coal Preparation and Its Improvement13-156Design of Centralized and Intelligent Control System of Mine Hositer16-187Design of Timing System with High Precision of Pulse Laser Ranging18-228Design of Wireless Temperature Measuring System Based on Infrared Transmission23-259Discussion of Automatic Guidance and Location Technology for Cantilever ExcavatorTIAN Yuan26-2910Power Supply Monitoring and Control System of Coal Mine and Its Development TrendFAN Rong30-3411Brief Analysis of Implementation Management of Integrated Automation Item in Coal Mine Construction34-3612Analysis of Safety Production Comprehensive Quality of Miner Based on Triangular Fuzzy NumberLI Chun-hui, CHEN Ri-hui, L(U) Li-xing, SU Heng-yu37-4013Pattern Representation of Gas Concentration Time Series Based on Piecewise Linear MethodXU Hui, ZHANG Jian-ying, CHEN Juan, ZHAO Zhi-kai41-4414Research of Clustering Analysis Method of Gas Monitoring Information of Coal Mine Based on DBSCAN AlgorithmWANG Dan-dan, FU Hua, XU Yao-song45-4815Modeling and Simulation for Direct-drive Permanent Magnet Wind Power SystemMA Wei, BAO Guang-qing49-5316Research of Health Diagnosis for Mine Hoister Based on LabVIEWZHANG Xiang-ming, WANG Xin53-5517Disturbance Recognition of Power Quality Based on Wavelet Packet-Energy EntropyLI Ning, REN Zi-hui, LIU Wei-wei, WANG Wei56-6118Research of a Practical Calculation Method of Grounding Capacity Current of High-voltage Power Network in Coal MineZHAO Rang-min, GAO Qing-hua, SUN Fang, LIU Chong61-6419Research of a New Type of Series-parallel Hybrid Filter Based on One-cycle Control65-6720Modeling and Simulation of Three-phase PWM Rectifier Based on Fixed Switching Frequency Control StrategyWANG Xian-bo, BU Wen-shao, DING Zhe, SHAN Dong-liang68-72 