为解决材料试验机测控系统功能单一、扩展试验复杂等问题,将基于Delphi语言的软件技术与基于单片机的自动控制技术结合应用到万能材料试验机的控制系统中。开展了针对通用材料拉伸、压缩等试验标准的分析,建立了万能试验机测控系统软、硬件与试验标准规程之间的关系,提出了模块化的上、下位机软件及硬件的设计方法;在建立测控系统上位机软件及下位机软、硬件平台的基础上,对提出的模块化实验设计方法进行了评价,并进行了多目标持荷试验、水泥胶砂抗压试验以及金属拉伸试验。研究结果表明,基于Delphi与单片机的上、下位机模块化试验系统方案能够满足各种材料试验标准需求,具有试验规程编制简单灵活的特点,解决了万能材料试验机功能单一、试验扩展复杂的缺点。
The material test machine masurements have disadvantages of mono-function and complexity for adding new testing programs.In order to solve these problems,the Delphi language based software development technology and microcontroller based automatic control technology were applied in the machine universal testing machine control system.The experimental standard for tension and compression of common materials were analyzed,and the requirement of the experimental procedure for universal testing machine was investigated.Based on these,the modular software and hardware design method was proposed to establish the upper computer software and lower computer hardware and software platform.Based on the platform,the multi-objective holding test examination,the compression tests of cement mortar and metal tensile test were experimented.The results show that the proposed modular design technology for the control system of the universal testing machine could solve the problem mentioned above and achieve a simple and flexible control system.