Data Acquisition And Processings Ystem Of Metallurgical Process Based On Virtual Instrument

In 2015,the Paris climate agreement determined the carbon emission quota of all countries.As the largest emitter of carbon dioxide,the task of energy conservation and emission reduction is very difficult.The steel industry belongs to the energy intensive industry,which accounts for 12.3% of China’s total energy use.The thirteenth five-year plan suggestion points to active carbon of high energy consumption of steel implement stricter management and control,energy saving measures for steel industry not only to this industry have a positive impact,but also plays a positive role for strengthening the construction of ecological civilization.The traditional iron and steel industry energy saving measures are for single equipment and processes,with the development of iron and steel industry automation and information technology,through the reasonable matching process flow to achieve energy saving become the new research direction.Virtual instrument technology is flexible and convenient,so this paper USES virtual instrument technology to automatically collect some thermal parameters in the steel process.The data acquisition system designed in this paper can be used in the metallurgical industry to complete remote automatic collection data and analyze and process data and have good human-computer interaction.The main contents of this paper are as follows:(1)In this paper,the iron and steel industry process is divided into two parts of the material flow and energy flow research,respectively,set up on sintering process and coking process in iron and steel production process and ironmaking energy flow and material flow physical model.The model is studied,and the measurement objects and thermal parameters related to coupling energy saving are selected.The whole system is analyzed in detail,and the whole frame of hardware and software is designed according to the function requirement.(2)According to the established system framework design two kinds of acquisition system hardware scheme,scheme,a traditional DC4 ~ 20 ma for remote data transmission and data acquisition card,the second scheme using Mbus two bus technology master-slave communication circuit for long-distance data transmission.After comparison,scheme two has the characteristics of strong anti-interference ability,high reliability and strong applicability.Therefore,the Mbus concentrator and the hardware communication circuit of the machine are designed according to plan 2.(3)The design of upper machine based on virtual instrument software system,software design,including the structure design and function design of software structure adopts "producers consumers" structure,software functions include login interface,a serial port communication,data display,data storage,etc.According to the communication circuit of scheme two,the communication protocol with master-slave structure is designed.(4)The physical experiment platform was built according to the hardware of the design,and the communication function of the bus was confirmed to work properly after debugging.A large number of communication test experiments are conducted on the designed communication circuit,and the actual communication distance,communication speed and reliability of communication circuit are ensured through the analysis of experimental data.Then the communication function and data storage playback function of the software were debugged.Finally,the system is tested by measuring the temperature of hot water cooling process,and the results show that the system has achieved the desired design goal and has certain advantages.