1Case Analysis of Especially Serious Gas Explosion Disaster Caused by Electric Fire SourceSUN Ji-pingAchievements of Science and Research1-52Design of Emergency Communication Security System of Coal MineQIAN Jian-sheng, LI Shuang-shuang, WANG Ying-yingAchievements of Science and Research5-83Design of Application Management Software of Multimedia Rescue Communication SystemLI Wen-feng, TANG Xiao-li, XU Ke-qiang, LU JunAchievements of Science and Research9-124Implementation of Management Type Switch Based on SMIHUANG You-shengAchievements of Science and Research12-155Research of Relationship between Reading Card Efficiency and Distance of EPC Gen2 SystemTAN Da-keAchievements of Science and Research16-186Key Technologies of Explosion-proof Frequency Converter Applied in Coal MineZHU Long-ji, ZHANG Xu-liReview19-227Basic Requirements and Design Method of Mine-used Intrinsic Safety Power SupplyZHU Qian-weiReview22-258Research of Dispatching Model of Coal Mine Air Compressor UnitLU Ru-yi, SHI Zhi-peng, HU Zhi-qiangLaboratory Research26-299Research of Errors Elimination Strategy of Body Pose of Boom-type RoadheaderDU Yi-bo, MU Jing, LI Rui, LIU Jian-gong, WU MiaoLaboratory Research29-3110Personnel Tracking Method of Coal Preparation Plant Based on Improved MeanShift AlgorithmZHAI Nai-jiang, LI Cheng-dongLaboratory Research32-3511Application Research of Image Gray Information in Automatic Separation of Coal and GangueYU Guo-fang, ZOU Shi-wei, QIN CongLaboratory Research36-3912Implementation of TFT-LCD Display System with High Gray LevelsSONG Yi-qing, FANG Zhen-dong, SHENG Hui-xing, CHENG YunLaboratory Research40-4313Research of Influence of Change of Load Dynamic Characteristics on Static Voltage Stability of Power SystemDUAN Jun-dong, HUANG Jia-xingLaboratory Research44-4814Research of Rectification Technology of Electric Locomotive under Unbalanced Three-phase VoltageLü Kang-fei, SHI Chao-yueLaboratory Research49-5215Research of a New Criterion of Main Protection of TransformerHE Ren-wang, XIE Wei, SONG Hai-yan, WU XunLaboratory Research52-5516Design of Mine-used Radar Level MeterSUN Li, LI Qing-zhao, PAN Shou-guoLaboratory Research56-5817Application of MapGIS in Mineral Resources EvaluationZHANG Jin-shan, MENG Guo-sheng, SUN Jia-ju, DU Wen-xiu, LI Chen, CAO Yue-huiLaboratory Research59-6318Design of an Intelligent Control System of Mine-used ValveLIU Yan, MA Wei-huaExperence Exchange63-6719Control System of Belt Conveyor Based on Embedded TechnologyXU Xi-yiExperence Exchange68-7020Design of Gateway in Fault Location System of Belt ConveyorYIN Shao-jie, SUN Jin-sheng, SUN Huai-xiangExperence Exchange71-75 