离心泵通用自动化测试控制技术

为了提高离心泵测试系统的可靠性和通用性,同时提高性能测试过程的自动化程度,构建了一种通用性的离心泵自动化测试系统结构,将可编程控制器(PLC)或采集卡作为泵测试系统的传感器信号采集器和泵阀控制器,并应用触摸屏作为人机交互界面,基于组态软件开发测试控制系统软件的同时将Visual Basic 6.0编写的曲线拟合、报表生成等软件功能程序模块嵌入系统软件中,使得系统成为可以采集多种传感器信号和支持多种数据采集设备的灵活性、通用性测试系统.介绍了离心泵通用化测试系统的组成方案、系统软件编写、曲线拟合原理及测试控制硬件的实现方法,系统调试结果表明,通过通用化控制器、组态软件及VB扩展功能程序模块的综合应用与开发,整个泵测试系统的自动化程度、通信能力、人机交互性能和可移植性都有了很大提升.该系统对于泵类设备测试和维护以及设计工业生产自动化系统有一定的参考意义.

Generalized automatic testing and control technology for centrifugal pump

In order to improve the reliability and applicability of performance testing system for centri-fugal pumps and enhance the automatic degree of testing process at the same time, the structure of a kind of general automatic testing system was constructed in this study. Programmable logic controller(PLC)or data acquisition card was selected as the sensor for signal sampling and the controller for the pumps and valves in the system. Moreover, a touch screen was used as the human-machine interaction. The system software was developed by using configuration software, and other functional modules written with Visual Basic 6.0 to conduct performance curve fitting and generate a test report, etc were embedded. As a result of these, the testing system not only can sample a variety of sensor signals, but also can support various kinds of data acquisition equipments,making the system more flexible and app-licable. In the present work, the composition scheme of the testing system, software programming, curve fitting principle and the realization of test control hardware were described. The obtained results show that the testing system has been greatly improved in degree of automation, communication ability, and performance of human-machine interaction as well as portability because comprehensive application and development of generalized controllers, configuration software and Visual Basic function modules were involved. The proposed system could be promising for testing and maintenance of pump equipment and for design of industrial automated production system.