1Microcomputer-based CAD System for Mine Electricity GridsFENG Linqiao, YI Ming, WU Rui1-42Model FC-Ⅲ Automatic Measuring and Control System for Floatation Separation Process ParametersHOU Lusheng, YING Haining5-63Study in New Type Signaling Device for Mine HoistsZHOU Xiuhua7-84The Design of Digital Automatic Subsynchronous Paralleling Experimental DeviceFU Zhouxing, ZHAO Jingtao9-105Fuzzy Control of High-pressure Air Valve in Coal Waste Automatic Separation SystemLIU Wenzhong, KONG Li, YUAN Shufeng, CHENG Wei11-136Method Implementing Data Long Line Transmission13-147Research in Computer-based Centralized Control and Simulated Experiment of Electro-hydraulic Control System for Hydraulic SupportsLI Fenglian15-178Study in Recognition of Control Graph Out of Control Pattetn18-199Multi-channel Signal Telemetry System for Coal Mines with Carrier Wave Transmitted by Telephone cableZHONG Daochang20-2110Intelligent Temperature Protection Apparatus for Main FansZHENG Fenglong, SHEN Huicun, GAO Fei, ZHOU Genhe22-2311Application of Single Chip Microcomputer in Periodic Measuring of Fan PerformanceCHEN Shiwei, HU Yafei24-2512Application of Thyristor Cascade Regulation Techno-logy in Innovation of Mine Ventilators26-2713Improvement in Wound-asynchronous Motor Starting Control Circuit27-2814Designing Method of Documentary Database System29-3115Discussion in Damages of Mine Use Switch Power Supply31-3316General Data Collection Device33-3417Discussion in Feasibility of Power Save, Consumption Reduction and Efficiency Enhancement in Coal Mines35-3618Application of JBD-1 Portable Methane Alarm Circuit-breaker of Mine Methane Monitoring37-3819Discussion in Economic Operation of Mine Air Compression Equipment39-4120Corresponding Display of Misalignment and Pull-wire Switch Faulty Action42 