Research And Development Of Wireless Transmission Device For Data Of Fused Magnesia Smelting Process

Fused magnesia can be widely used in metallurgy,chemical industry,aerospace and other industries,and is an important strategic resource.The equipment for the production of fused magnesia is a three-phase alternating current furnace,which is a typical high energy consumption equipment.Its electric energy cost accounts for more than 60%of the production cost.The operation index of fused magnesia melting process is energy consumption per ton,that is,electric energy consumed by one ton of qualified fused magnesia products.The goal of melting process control is to control the energy consumption per ton within the target value range and minimize it.The energy consumption per ton depends on the melting current.And the key to reduce the energy consumption per ton is to control the three-phase electrode current within the allowable range of the optimal melting current through the current control system.In the melting process,the temperature in the furnace is very high,so the submerged arc method is needed.The melting characteristics change with the melting process.The current control algorithm is difficult to meet the requirements,so the high-performance current control algorithm needs to be studied.In order to study the practical high-performance current control algorithm,it is necessary to establish a simulation model that accurately reflects the dynamic characteristics of the whole smelting process,and conduct real-time simulation.Therefore,a real-time simulation system combining "end side cloud" is needed,which needs real-time and reliable data acquisition of the whole smelting process.The existing control system is difficult to store and process the real-time data of the whole smelting process for up to 10 hours.So it is necessary to develop a wireless transmission device for the real-time data of the smelting process of fused magnesia.According to the requirement of the real-time simulation system for the whole smelting process for the accuracy and reliability of the real-time data,this paper designs and develops a wireless transmission device for the data of the whole smelting process and carries out the experimental verification.The specific work is as follows:1.Because the existing control system in the production process of fused magnesia is difficult to provide accurate and reliable real-time data for the real-time simulation system,this paper adopts the mobile communication technology to transmit real-time data.Aiming at the problems of data packet loss,disorder and delay introduced by radiofrequency interference and channel fading in the production site of fused magnesia,Developed wireless reliable transmission algorithm composed of process data disordering,deterministic scheduling and heterogeneous data synchronization to ensures the accurate and reliable remote transmission of real-time data.2.The software and hardware of wireless transmission device for the data of the smelting process of fused magnesia are designed.The software includes local data acquisition module,transmission module based on the proposed algorithm,transmission link exception simulation module,cloud data processing module and experimental verification module.In the hardware part,raspberry pie is the core,including the adapter board,ZigBee module,special camera acquisition module and 4G industrial router based wireless transmission module.Through the unified control and distribution of hardware resources by software,and through the standardized programming interface to release the tight coupling relationship between software and hardware resources,so that they can evolve independently.3.The development of wireless transmission device for the data of fused magnesia smelting process is carried out.On the basis of Python and C language,the local data collection module is developed based on the custom data format to complete the unified collection of data under the restrictions of different devices and different interfaces;the local data transmission module is developed based on VPN(virtual private network)and socket technology to send the collected data to the cloud server wirelessly through the user’s customized way;the data is based on chaos In order density and iperf,the simulation module of transmission link anomaly is developed to complete the simulation of transmission link anomaly such as disorder;based on the process data disorder processing algorithm,process data deterministic scheduling algorithm and heterogeneous data synchronization algorithm,the cloud data processing module is developed to deal with the link anomaly such as data disorder,transmission delay anomaly and asynchrony;in addition,based on electric melting magnesium The sand hardware in the loop simulation experiment system developed the experiment verification module.4.The function of wireless transmission device is verified in real time by using realtime data of fused magnesia smelting process and semi physical simulation experiment system of fused magnesia.The experimental results show that the functions of acquisition,transmission,out of order processing and deterministic scheduling are normal,and the system can achieve real-time,reliable and remote acquisition of data needed for real-time simulation,and effectively improve the problems of out of order,delay abnormality and heterogeneous data synchronization caused by abnormal transmission link.