Design And Implementation Of Intelligent Flow Meter System Based On Magnetoelectric Sensor

With the rapid development of China’s economy and the continuous improvement of measurement requirements in the industrial field,and the demand of high-precision development and stable measurement of flow meters at home and abroad is also growing by leaps and bounds.At present,it is widely used not only in gas stations,oil smelting bases,liquefaction plants,aviation fields,but also in environmental water treatment devices,especially for high-precision metering devices.The intelligent flowmeter of magnetoelectric sensor is just good,with the characteristics of high precision,high stability and high reliability adaptability,and also has the function of real-time online monitoring.This is of great significance to the whole working environment,and also meets the requirements of human beings for the improvement of industrial efficiency,quality assurance and output value,which greatly promotes the vigorous development of high-tech.At this stage,China’s domestic petrochemical instrument measurement is also in the stage of vigorous development,but it is still in a position without advantages compared with the international advanced level.How to further improve the domestic measurement level,real-time online monitoring and intelligent automation has become the key to the development of instrument measurement industry at this stage.Therefore,it is very necessary to study the intelligent flowmeter of magnetoelectric sensor applied in high-precision and complex environment.The specific research contents include the following aspects:(1)This dissertation describes the measurement of intelligent flowmeter using magnetoelectric sensor.Firstly,the flowmeter is introduced The instrument installation and structural characteristics are analyzed based on the quantity theory and system characteristics.(2)Study based on the requirements of environmental adaptability,accuracy grade and nominal pressure,a series of The all scheme of comprehensive system architecture,consist of system architecture,hardware architecture,software architecture,structural design and implementation design of functional modules.Next,the specific development of the overall scheme is designed in detail,including the construction of development environment,circuit design,structure design,sensor selection and physical model establishment.(3)In the later stage of the research,this dissertation tests and evaluates the work done,builds a test platform and makes a comprehensive evaluation Test the interface,display keys,query function,configuration function,fault alarm function and other basic functions of the system software,as well as the correctness and stability of the software,obtain the test results and analyze them.The test results show that when the working temperature is(-40 ～ + 80)℃,the atmospheric pressure is 2.5MPa and the flow range is3 ～ 30m~3/h,the repeatability error is better than 0.03% and the accuracy grade is ± 0.1%.The test results of this software are good and achieve the expected goal.Finally,this dissertation also prospects the follow-up work of this subject,and points out the improvement work to be done to optimize this comprehensive intelligent flowmeter,such as miniaturization design,research on new materials and so on.