using a PLC-based centralized monitoring all mine belt conveyor system, which set the scene controller and a control master station, set up a CC-LINK communications network, and equipment on the belt conveyor system, CRT centralized monitoring, access to improve production efficiency and reduce on-site operators, improve the security of good results.
1 Introduction coal belt conveyor control system for safe and reliable direct impact on whether or not the economic benefits of mine. To enhance system reliability and security, the implementation of centralized control, to achieve comprehensive system protection and centralized control, it is very necessary. Centralized control systems and scheduling phone systems, industrial TV system together with a complete operation, scheduling, monitoring networks, realize the whole system of telemetry, remote, remote control. The system can increase productivity, reduce the accident rate, reduce troubleshooting time, reduce on-site operators, increase economic efficiency.
2 Control System description of the system is fully distributed control structure. Console from the underground control station and integrated form. Integrated Operations Center located in the central control room floor. System uses the Japanese Mitsubishi Electric Corporation AnS and FX series PLC, control of the main station and the control of Sub-station by bus Ryoden open network structure of CC-Link, control sub-station and sensor connection between the use of Inmerse Matrix structure, control of the main station monitoring and integrated console controller via the CC-Link bus network connection. Control Sub-station equipment for field data acquisition and control, through the monitoring device can monitor the whole system and centralized control. The system is based and the FX series Ryoden AnS PLC as main control component, a moisture-proof, anti-interference ability, on-site easy to program, easy to expand, basic maintenance, and to achieve control of the software to automatically detect system failures and so on. PLC system is composed of multiple data transmission network, to a different scale control. Completed more than a belt system to monitor the whole process, monitoring, together with the ground command station management center to form a complete monitoring system.
3 network taking into account site conditions and control of coal from the ground control center set up control of the main station, with Mitsubishi s large and medium-PLC-AnS series, the network used open CC-Link bus, the control of more than 1200 meters away from the two a control station to increase between the repeater, set the control device in the belt head sub-station. Control equipment for on-site sub-station, the signal acquisition and real time control of the scene. System for real-time monitoring network, with perfect production control management, right belt transport Zhuyaohuanjie and the supporting part of the production process in real-time data acquisition, transmission, processing, display, record Dayin, carried out on the remote underground transport Pidaixitong centralized monitoring, in conjunction with industrial television systems for security video surveillance, to ensure the safety of personnel and equipment. Monitoring network implementation, the operator terminal in the control room monitor control on the transport belt production process, complete the relevant part of the transport belt production and the "telemetry, remote and remote control" of a mine transport belt production system integrated automation.
1. Real-time monitoring of operating parameters. The production control system real-time acquisition and operation parameters and can use graphics, reports, real-time display system in the form of conditions and the current production, storage and so on.
2. Real-time process control. Analysis of acquisition parameters, the system will automatically complete the process control, or operational control by the operator.
3. Historical data query. Real-time monitoring data over the production process real time data can be stored in the historical database, enabling the echo of history, historical trend analysis, and histograms, pie charts, etc. were analyzed.
4. Equipment failures and analog over-limit alarm. When equipment failure or analog gauge, the production monitoring and management of network synchronization failure device display name, and may voice alarm, real-time printing fault function. Server failure the fault information into database for later statistical analysis.
5. Optimize production planning. In the network server, a comprehensive historical database, to build, time to production, management and other data into the database, production planning, production and completion of trends analysis charts, production plans for the future provision of reference; Sinotrans issued under the state plan and equipment for practical , storage of coal capacity, rationalize production planning, equipment maintenance program to minimize the impact on production.
4 Operator Workstation features under the control subsystem, the monitoring center set up workstations, transportation system monitoring stations of their functions:
1. According to different operators, set different permissions, perform their duties;
2. To provide an interactive platform for all Chinese language interface, operation, running status of all subsystems and parameters of the dynamic visual display;
3. According to relations between process and interlocking subsystems of automatic / manual / local control;
4. Time to set various operation parameters of the production process;
5. Real-time monitoring of all subsystems of equipment operating parameters and status, while the parameters of the data stored on your hard drive, upload the necessary data to the data server;
6. Real-time sensors to monitor the current status of all subsystems and parameters;
7. On the various equipment and the necessary real-time sensor fault alarm state, alarm mode for the sound and light alarm. And printing real-time alarm, while alarm data storage into the data server to facilitate unified management information to accident analysis on the alarm;
8. any query, printing real-time trends and historical trends in any time period;
9. Any query, print reports of historical data any time.
5 engineer station engineer station operator workstation than with all the features, it also has the following features.
1. According to the adjustment process control procedures online changes to suit the needs of new technology;
2. The control system to convert the data into all mine information management systems;
3. Set color printers, print color images in real time and color trends;
4. When a subsystem failure of the operator workstation, the operator can immediately by setting permissions, will be converted into the subsystem engineer station operator workstation.