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| Monitoring and Control for Environment and Personnel Safety of Mine |
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Since the 80s of the 20th century, Changzhou Automation Research Institute of China Coal Technology & Engineering Group Corp has developed many monitoring and control systems for coal mine, such as KJ1, KJ2, KJ22, KJ12A and KJ95, which have been awarded with scientific and technological progress prizes of national, ministerial and provincial class and more than 1000 complete sets are operating in mining bureaus and coal mines in China and other countries such as Bengal, India, Turkey and so on.
Model KJ95N Integrated Monitoring and Control System for Coal Mine is developed with advanced technologies of computer network, ARM and EMC anti-interfering based upon our previous monitoring and control systems for coal mine. The system can monitor, display, alarm and control various parameters of environment and production of coal mine and methane drainage process, and it is suitable for small, medium/large-scaled coal mines. |
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| Configuration Graph of Model KJ95N Integrated Monitoring and Control System for Coal Mine |
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The system conforms to AQ6201-2006 General Technical Requirements of Safety Monitoring and Control System for Coal Mine and related industrial standards; |
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The system can monitor and display environmental parameters such as methane, air flow, negative pressure, carbon monoxide, smoke, temperature, air-door and so on, and have functions of failure locking and alarming, local or remote over-limit power-off, interlocking of air, electricity and gas, etc; |
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The system can monitor and display production parameters such as coal level of bunker, water level of sump, air pressure of air compressor, count of skip bucket, start/stop of electromechanical equipment, and have function of failure alarming; |
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The system can monitor and display methane drainage process; |
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The system has function of information indication and guide, decentralizedly displaying event plan, related parameters and lifesaving routine guide, sending voice alarm in coal mine wide; |
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The system software has functions of parameters setting, control, page editing, display of forms, curves, histogram and analog diagram, printing and inquiring. |
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Advanced technology with various transmission modes such as transmission interfaces, optical terminal for data, industrial Ethernet, etc. |
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Simple and reliable transmission network with standard network transmission protocol, high transmission rate, low error (less than 10  ) and long non-repeater transmission distance. |
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Good compatibility and openness of the system software which is based upon Microsoft COM/DCOM technology and client/server structure. |
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On-site calibration and setup of sensors and general management and maintenance of Intrinsically Safety UPS. |
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All the main devices of the system have passed related electromagnetic compatibility test. |
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System Capacity: 128 outstations |
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Transmission Media: Cable, optic fiber cable |
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Transmission rate: 1 200 bit/s |
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Transmission distance between surface center and outstations:  15 km(cable), 20 km (optic fiber cable) |
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Transmission distance between outstation and sensors: 2 km |
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Analogue sensor signal: 200  1 000 Hz and other signals of non-standard system and RS485 |
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On-off sensor signal: non-potential contact signal, level signal |
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Executing time of cutting off for methane over-limit and interlocking for air-door, electricity and methane:  2 s |
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Power supply: Surface central station is AC 220 V, Underground device is AC 127/380/660 V |
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