Study And Design On The Intelligent Control System Of Multilevel Cooperative Drainage In Mine

With the development path of "single machine automation-comprehensive automation-perception mine-intelligent mine" being put forward,digitalization,intelligentization and networking have become the theme of modern coal mine development.As an important part of mine construction,underground multilevel drainage system still has many problems such as high energy consumption and weak linkage.This paper studies the control strategy of multilevel drainage,by designing a set of multilevel cooperative drainage intelligent control system,the paper solves the problem of high electricity cost and difficult linkage control of multilevel drainage.The main work and innovations are as follows:(1)Aiming at the problems of frequent starting and stopping of pumps and high cost of electricity consumption in traditional control method,the paper puts forward an improved "peak avoiding and valley filling" strategy.The water level of the water tank is re-divided,and the water level change rate and buffer adjustment time period are introduced to optimize the control logic of the water pump.It is proved by simulation experiments that this strategy can reduce the use time of pumps,improve the drainage efficiency and reduce the electricity cost.(2)Aiming at the problem that the multilevel cooperative drainage system is a multi-variable nonlinear strong coupling system,it is difficult to achieve precise and direct control of it,the paper puts forward a decoupling control strategy based on fuzzy neural network,and designs a multilevel water level decoupler,and the GA-BP fusion algorithm is proposed to optimize the parameters of fuzzy neural network and improve the decoupling speed.Simulation experiments prove that the decoupler can realize the decoupling control of multilevel drainage,and it has good control effect.Combined with the improved "peak avoiding and valley filling" control strategy,the paper formulates a control method for the multilevel cooperative drainage.(3)Aiming at the problem that the pumping rooms of the multilevel drainage system are independent from each other,and the information interconnection cannot be achieved,by analyzing the multilevel drainage method,the drainage unit of the multilevel coordinated drainage system is designed.Based on the functional requirements of the system and the concept of layered design,the paper designs the overall structure of the system,the fault tolerance of the system is improved and the integrated linkage between the pumping rooms of the multilevel drainage system is realized.(4)Combined with the intelligent control strategy of multilevel cooperative drainage and the overall study of the system,a set of multilevel cooperative drainage intelligent control system is developed,and the hardware of the control unit,data acquisition unit and communication unit of the system,as well as the PLC program and monitoring software of the upper computer is designed.The drainage system is tested and applied in Hengyuan Mine,and on-site operation is normal and stable,and energy cost savings are achieved.There are 56 figures,12 tables and 72 references in this paper.