The Design And Implementation Of HMI Software

With the industrial automation speedily developed, computers arewidely used in industry. People are requiring more and more to industrialautomation and many kinds of control equipment and procedure monitordevice are used in industry, which made the conventional industrial controlsoft can't satisfy all kinds of requirement of the users. Once the controlledobject is changed, we must modify the source program of the control systemwhen we are developing conventional industrial control soft. This will extendthe development period; When the control projects are different, the origincan not work well, which makes the price of the software very high; If theformer programmer of the software leaves because of job alteration whenmodifying the source program, we must modify the source program withother persons or new programmer. This will make the work much harder. Theappearance of the general industrial automation HMI software resolves all theproblems referred before. Because the users can freely configurate thesoftware according the control object and control aim to complete theautomation control project.From the 80's in 20th century up to now, the HMI software has haveabout 20 years history. The HMI software is constantly developing with thedevelopment of PC. The HMI software in the 80's was mostly run in DOSoperation system. So the early general HMI software was developed in DOSoperation system. It only has basic function such as simple interface, graphlibrary and picture toolbox etc. With the widely using of the Windowsoperation system, the HMI software used under Windows operation systembecomes mainstream. Its drawing function is greatly strengthened comparedwith the software used under DOS. Many excellent general HMI software aredeveloped under English environment. They are used for long time, they haveunreasonable interface, they don't matching or don't freely matching thehardware widely used in our country. The foreign software is more expensiveand we have to pay much money to learn how to use them. So the foreignsoftware is not popular in our country. With the development of the domesticcomputer level and improvement of the domestic industrial automationdegree, the market of the general HMI software is greatly enlarging. In recentyears, some companies with strong and high-tech technique power developedthe HMI software, which is fit for domestic use and meets the consumers'needs.