1Development of Intrinsically Safe Computer Used in Mine RescueZHENG Xue-zhao, WANG Wei-feng, DENG JunAchievements of Science and Research1-42Development of a New Type of Multi-functional Detector for Mine Ventilation ParametersCAO Xian-gangAchievements of Science and Research4-63Integrated Automation System for Drainage of Coal Mine Based on EthernetYUAN Xiao-dong, DENG Xian-ming, WANG Dong-dong, LU Jia, ZHANG MinAchievements of Science and Research7-104Data Collection System of Simulation Training for Using Self-rescuer Based on Radio Frequency TechnologyYUAN Yu-liangAchievements of Science and Research10-125Design Scheme of a New Type of Base Band Voice for Wireless Communication in Coal Mine UndergroundAchievements of Science and Research13-156Design of Noise Source Analyzer for Industrial Compressor Based on Frequency Spectrum and Wavelet TransformWANG Li, NIU Qun-feng, HU Hong-shengAchievements of Science and Research15-187An Effective Self-detection Method for Memory Leak of C++Achievements of Science and Research19-218Personnel Localization Algorithms for Wireless Sensor NetworksFU Jun, CHEN Jun-jieOverview22-269Design of a Portable Static Strain Gauge for Anchor Used in MineWANG Guo-wei, GUO Feng-yi, WU Zhi-gangLaboratory Research27-3010Research of Drill Information Management System Based on Oracle Spatial and Its ImplementationLaboratory Research30-3311Design of Control System for Coal Bed Gas Mixing Based on PIDLaboratory Research33-3512Research of Safety Information Management Model of Coal Mine Based on Data MiningZHAO Wen-tao, YANG JingLaboratory Research36-3913Design of Mine-used Small Current Grounding Selector of High-voltage Based on Transient Signal and FPGAYANG Fei-hu, DU Qing-jie, RONG XiangLaboratory Research40-4314Research of a New Type of Dual-PWM Frequency-conversion Speed-regulation System for Mine Hoist with Medium and Small PowerBAO Xi-ping, JI ZhiLaboratory Research43-4715Embedded Harmonic Detection Device Based on Dual-CPUsWANG Yu-feng, NIU Li, HE FeiLaboratory Research48-5116Research of Anti-interference Performance of Matrix Converter Based on Double-voltage SynthesisLaboratory Research51-5417Application Research of a New Type of Driving and Protection Circuit in Cascaded InverterLaboratory Research55-5818IGA Optimization Design of Permanent Magnet Linear Synchronous MotorWANG Fu-zhong, LIU Jing, LI Bing-quan, YUAN Shi-yingLaboratory Research58-6019Research of Measuring and Control System for Multi-motor Based on Networked Virtual InstrumentLaboratory Research61-6420Setting Calculation of F-C Vaculum Contactor in Motor ProtectionLaboratory Research64-66 