Preset and Practice of Compressor Operator Intrusion Control

Main functions of running software The software is divided into five main functional modules: system setting module, measurement module, calculation module, data query module and system maintenance module.

(1) System setting module. There are mainly general parameter settings, acquisition parameter settings, and so on. The overall parameter settings include the location of the device, the communication port, and the baud rate setting; the acquisition parameter settings include the acquisition time setting; the inlet pressure and outlet pressure settings of each cylinder; the upper and lower limits of the inlet temperature, outlet temperature, voltage, current, etc. Settings.

(2) Real-time measurement and monitoring module. After entering the test state, the system starts to collect and process data (including pressure, temperature, voltage, current, etc.) at regular intervals, display data and curves in real time, and save the results to the database; once received the super Pressure, overload signal, the system immediately alarms to ensure safe operation.

(3) Calculation and analysis module. According to the input process parameters and measured data, the thermal calculation, dynamic calculation and economic benefit calculation are carried out; the calculation results are stored for further inquiry in the future; the calculated data and the actual operational data are analyzed and compared; Operational indicators, improve economic efficiency, and save energy.

(4) Data query module. This module includes compressor parameter query, thermal data query, power data query, economic benefit data query and data query of pressure, temperature and electrical parameters. Users can perform real-time queries or query data collected during the most recent period as well as historical data; they can also display dynamic real-time data. In addition to supporting the query of various performance parameters, it can also draw various curves such as power diagrams and tangential force diagrams.

(5) System maintenance module. It includes user name and password management. If the password is entered incorrectly three times in a row, the system will be immediately quit. The system-defined user rights are divided into two types: ordinary users and system administrators. Only users with administrator status can implement all operations and can access data. The dictionary and test object data dictionary perform operations such as adding, deleting, modifying, and maintaining.

In addition, this module also has the function of creating and helping log files. The ADO technology (ActiveDataObject) of the software system box database is a more advanced and simple interface built on OLEDB, which can be used by more applications. Its structure is as shown.

Using the structure of the OLEDB application The system uses Windows2000 as the running platform, and uses C++Builder6.0 to program using object-oriented and visual software technology. C++Builder6.0 fully supports ADO component technology, so you can access various databases <2,3> through various ADO drivers. On the other hand, the system database uses SQLServer, which can realize MH multi-level. Piston compressor thermal calculation, power calculation and technical economic analysis calculation data storage, database query and real-time monitoring and control functions <4>.

The steps and methods for accessing the database using the ADO component are as follows: (1) Create a data source name. DSN (DateSourceName) is a data source name, and OLEDB is a way to access the database. As long as there is a corresponding OLEDB driver in the system, any program can manipulate the database corresponding to the driver through OLEDB. DSN is the bridge between the application and the database. When you need to pass SQL commands to the OLEDB driver, you use DSN to tell it which database it is operating on. In this project, the author used the SQLServer database.

(2) Connection method. The ADO component provided by C++Builder6.0 can be connected to the ADO data store, and then can execute commands and receive data from the database table. Before the command executes or extracts data, the application must create a connection to the data store. The easiest way is to create a connection (via its ConnectionString property) using the TADOConnection component.

(3) Activate the connection. To activate an ADO connection, set the Connected property of the TADOConnection component to True, or call the Open method of the TADOConnection component.

TADOConnection1>Connected=True; or TADOConnection1>Open(); (4) close the connection. In order to close the ADO connection component, you can set the Connected property of the TADOConnection component to False, or call the Close method.

The program features more functions and friendly interface, which is more flexible and convenient. It can not only communicate settings, data acquisition and display, but also switch to input data from computer keyboard, perform calculation and analysis required by users, and provide powerful query function.

Conclusion Compressor monitoring, automatic adjustment and control software researched and developed in this project is suitable for optimization and control of compressor production in large/medium/small fertilizer, petroleum and machinery enterprises. Optimization calculation and analysis in safety and economic activities. Optimized design calculation in the transformation; at the same time, it also has reference function for the optimization design and calculation of different types of compressor design and manufacturing units.