Based on the MCGS configuration software to realize natural gas flow measurement and data acquisition system design - Measuring instrument

configuration software from the early 1980 s birth to now have nearly 20 years of history, it is the emergence of the rise and application of PC are inseparable, the initial configuration software running under DOS, mostly with the emergence of Microsoft visual interface, the human-computer interaction interface software began to appear. With the development of national economy in our country at the same time there is an increasing demand for gas, gas measurement accuracy requirements of more and more high, configuration software application to gas also brings new concepts and methods of measurement, its application has been deep into the natural gas measurement.

1, summary of configuration software

1. 1 what is the meaning of the configuration and configuration software

configuration ( Configuration） Is to use the application provides tools and methods to complete the project in the process of a specific task. The configuration concept, in order to achieve a particular task, is by writing programs ( Such as using the BASIC, C, FORTRAN, etc. ) To implement. Write programs not only workload big, cycle is long, and easy to make mistakes, can't guarantee the time limit for a project. The emergence of the configuration software solved the problem. In the past few months work needs to be done by configuration for a few days can be completed.

configuration software is to provide some software configuration function, configuration software is a professional. A configuration software can only be suitable for some applications in the field of. Configuration first appeared in the concept of industrial computer control, such as DCS, Distributed control system) The configuration, PLC ( Programmable controller) The configuration of ladder diagram. The man-machine interface to generate software is called industrial control configuration software. In fact in other industries also have the concept of configuration, such as AutoCAD, PhotoShop, PowerPoint has similar operation, which is software provides tools to form their own works, and works with data file, rather than execute a program. Formed by the configuration data is only the tool or other special tools to identify. The difference is that the formed in the industrial control configuration is used in real-time monitoring results. The interpretation of the configuration tool engine according to the results of the configuration to run in real time. On the surface, the configuration tool to run the program is to perform a specific task.

1。 2 the composition, function and characteristics of configuration software

configuration software to include the man-machine interface software ( HMI） Execution, the control software based on PC and production management software.

the functions of configuration software: ( 1) Dynamic visualization of industrial production process control; （ 2) Production process data acquisition and management; （ 3) Production process monitoring alarm; （ 4) The report function; （ 5) Based on the network data upload and corresponding control.

configuration software features: ( 1) Continuity and scalability, and general configuration software application development, when the scene, Including hardware equipment or system structure) Or user requirements change, do not need to make a lot of changes to complete the software update and upgrade convenient; （ 2) Encapsulation ( Easy to learn and easy to use) , general configuration software to complete the function of all packed in a user-friendly way, the user does not need to master too much programming language techniques ( Don't even need to programming technology) Can well all of the functionality required to complete a complex project. （ 3) Generality, each user according to the engineering actual situation, using common configuration software provided by the underlying device ( PLC, frequency converter, intelligent instrument, intelligent module, interface card, etc. ) The I/O Driver, open the database and the picture of production tools, can complete a animation, real-time data processing, history data and curve coexist, has the function of multimedia and network engineering, without being limited by the industry.

2, system application overview

we here is application of MCGS configuration software, in natural gas metering project, including large and small workstations, first of all, each station is equipped with a high accuracy pressure, differential pressure, temperature transmitter, data acquisition card, for gas flow measurement and data acquisition, the data transmitted to the PC and the MCGS software used in combination, so as to complete the field data acquisition, data storage, report forms printing, alarm, and other functions, the realization of the function of these, is advantageous for the on-site staff to monitor and control of production, thus forming a site in our the whole system. All of the site through the computer network, the measurement data passed to our dispatch center server, we installed on the server in the center of the scheduling of the MCGS IE version, the workstation can through methods such as microwave, modem, serial interface communication sends the field data to the server, in the center of the scheduling server configuration and released, thus forming the PC management system based on Web. Managers use PC management system from the Internet browser real-time understanding of the historical production data, the data curve, inventory data, etc. , in a timely manner to master production performance. At the same time, the PC management system based on Web server into full play and the management function, numerical computing and statistical summary functions, make the potential of the whole system. System structure diagram as shown in figure 1.

figure 1 system structure diagram