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Outline
With the continuous improvement of automation levels in uranium mines, the reliability of electrical control systems has become a key factor in ensuring production safety and efficiency. This paper addresses the abnormal failure issues of the frequency converter control system in a uranium mining project in Xinjiang and proposes a PLC-based frequency converter communication control and hardwired backup redundancy control scheme. By comparing and analyzing the technical characteristics of terminal control and communication control, a redundant architecture combining Modbus RTU and terminal control is designed and implemented. Practical application shows that this scheme effectively solves the control failure issues caused by communication interference in the original system. The mean time between failures (MTBF) of the system has increased from 168 h before the transformation to over 2 000 h, and the control response time has been shortened to less than 100 ms. The research content provides an important reference for the design of high-reliability control systems in the uranium mining industry, especially for production scenarios with complex electromagnetic environments and stringent reliability requirements.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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