基于LabVIEW的摩擦磨损试验机数据采集系统设计

发布时间：2019-03-25 15:53

【摘要】：摩擦学研究过程中,摩擦磨损试验机数据采集系统是必不可少的工具。然而,目前国内大多数摩擦磨损特性信息采集系统仍使用基于模拟技术的记录仪甚至直接采用人工读数进行数据采集,导致了信息采集的不确定性,以及采集系统往往存在不及时、不直观等问题。此外,在摩擦磨损试验数据采集过程中常常需要对大量数据进行分析、处理,单靠人工完成测量任务难度很大,而且传统的测量仪器功能模块基本是以硬件或固化的软件形式存在,使用灵活性较差。为了实现摩擦磨损过程中参数信息的准确采集、及时分析处理与直观显示,有必要设计一套摩擦磨损试验机数据采集系统。针对现有信号采集系统存在采集数据不及时、数据显示不直观等不足,本文基于虚拟仪器技术LabVIEW设计构建了摩擦磨损试验机数据采集系统。文中采用三维建模软件UG完成了硬件部分的结构设计。硬件部分的设计内容主要包括用于产生信号的摩擦磨损试验机的设计组装、用于获取摩擦磨损过程中材料特性参数传感器的选取,配合各传感器使用的信号调理模块和相应数据采集卡的购买,以及实现各个部件在摩擦磨损试验机上的合理安置。利用虚拟仪器技术LabVIEW对软件部分进行了程序编写:该部分主要包括系统用户管理界面、数据采集与存储界面及数据查询界面程序。软件部分前面板的设计包括采集功能按钮、信号曲线窗口显示、数据采集指示信息等部分的合理布局;后面板的设计包括实现信号采集功能、信号的分析处理功能等。最终,完成了硬件部分与软件部分的调试。本文设计的摩擦磨损试验机数据采集系统,实现了摩擦磨损过程中对摩擦副材料特性参数的实时采集与直观显示,为进一步研究分析摩擦副材料性能提供数据支持,具有一定的实际应用价值。
[Abstract]:In the process of tribological research, the data acquisition system of friction and wear testing machine is an indispensable tool. However, at present, most of the domestic information acquisition systems of friction and wear characteristics still use the recorder based on simulation technology and even directly adopt manual reading to collect data, which leads to the uncertainty of information collection. As well as the collection system is often not timely, not intuitive and other problems. In addition, in the process of data acquisition of friction and wear test, it is often necessary to analyze and process a large number of data, so it is very difficult to accomplish the measurement task by manual means. And the traditional measurement instrument function module is basically in the form of hardware or solidified software, so it is not flexible to use. It is necessary to design a data acquisition system for friction and wear testing machine in order to realize the accurate collection of parameters in the process of friction and wear, timely analysis, processing and visual display. In view of the shortcomings of the existing signal acquisition system, such as the data acquisition is not timely and the data display is not intuitive, a friction and wear testing machine data acquisition system based on virtual instrument technology LabVIEW is designed in this paper. In this paper, the three-dimensional modeling software UG is used to complete the structure design of the hardware. The hardware design mainly includes the design and assembly of the friction and wear testing machine used to generate the signal, which is used to obtain the selection of material characteristic parameter sensor in the process of friction and wear. With the purchase of the signal conditioning module and the corresponding data acquisition card used by the sensors, the reasonable placement of the components on the friction and wear testing machine is realized. The software part is programmed by using virtual instrument technology LabVIEW. This part mainly includes the system user management interface, the data acquisition and storage interface and the data query interface program, which includes the system user management interface, the data acquisition and storage interface and the data query interface. The design of the front panel of the software includes the reasonable layout of the collection function button, the signal curve window display, the data acquisition and indication information, and the rear panel design includes the realization of the signal acquisition function, the signal analysis and processing function and so on. Finally, the debugging of hardware and software is completed. The data acquisition system of friction and wear testing machine designed in this paper realizes the real-time collection and visual display of the material characteristic parameters of friction pairs in the process of friction and wear, which provides data support for further research and analysis of the material properties of friction pairs. It has certain practical application value.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH87

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