基于ARM的嵌入式石油闭口闪点测定仪的研究与设计

发布时间：2018-06-13 21:01

本文选题：嵌入式 + 闭口闪点　；参考：《长春工业大学》2017年硕士论文

【摘要】：随着国民经济的迅速发展,作为能源和基础材料的石油产业已成为我国重要的支柱产业。油品的性质也越来越被人们所关注,闪点是表征石油产品安全性的一个重要指标,因此其测量精度就尤为重要。由于石油行业发展比较早,石油闪点测定的仪表大多为手动式,这类仪器需要实验员具有一定的经验,而且试验操作繁琐,浪费人力资源。后来虽有自动闪点仪问世,但是在闪点测定的速度、精度及稳定性方面还远远不能满足对闪点测定的需求。本文针对上述问题,应用先进的ARM技术、电子技术、嵌入式技术以及接口技术研发的嵌入式石油闭口闪点测定仪,较好的解决了上述问题。所开发的嵌入式石油闪点测定仪,只需实验员准备好试验样品,通过较好的人机交互接口,即可实现油品闭口闪点的自动测试。嵌入式石油闭口闪点测定仪是根据国家标准GB/T261-8 3及国际标准ISO2719-1988的规定方法与操作程序研制的。根据测试标准的要求,吸收了自动闪点仪的优点及已成型的搅拌、风冷等方案,对原机型欠缺方面作了较大改进,使其在速度、精度、稳定性等方面有了较大的提高。本课题主要实现嵌入式石油闭口闪点测定仪的硬件设计和软件应用程序设计。整机以ARM7S3C44B0X为核心处理器对整个测试过程进行控制,硬件设计主要完成系统的晶振和复位电路、电源电路、存储器接口电路、LCD显示和键盘电路、打印输出电路、测温及A/D数据采集电路、闪火检测电路、动作控制输出电路的设计。软件设计主要包括μC/OS-II在ARM7上的移植以及应用程序的设计,其开发环境采用的是ARM公司推出的ADS1.2。本课题的创新点为仪器的CPU控制部分由原来的单片机被ARM所取代,使得嵌入式石油闪点测定仪在速度和精度方面以及稳定性有了较大的改进。同时结合本课题的温度控制系统,在温度控制算法方面提出一种改变积分的PID控制算法,并通过仿真计算出积分增益常数,在控制精度方面比单纯的PID控制有了很大的提高。
[Abstract]:With the rapid development of the national economy, the petroleum industry, as an energy and basic material, has become an important pillar industry in China. More and more attention has been paid to the properties of oil products. Flash point is an important indicator to characterize the safety of petroleum products, so its measurement accuracy is particularly important. Because of the early development of the petroleum industry, most of the instruments used to measure the flash point of oil are manual, which requires the experimenter to have certain experience, and the operation of the test is cumbersome, which wastes human resources. Although there was an automatic flash point meter, the speed, accuracy and stability of the flash point measurement were far from being able to meet the requirement of flash point measurement. In order to solve the above problems, this paper uses the advanced arm technology, electronic technology, embedded technology and interface technology to develop the embedded oil closed-end flash point tester, which can solve the above problems. The developed embedded oil flash point tester only requires the experimenter to prepare the test sample and to realize the automatic test of the oil flash point through a better man-machine interface. The embedded oil closed flash point tester is developed according to the national standard GB / T261-83 and the international standard ISO 2719-1988. According to the requirements of the test standard, the advantages of the automatic flash point meter and the schemes of the formed agitation and air cooling are absorbed, and the lack of the original model is greatly improved, so that the speed, precision and stability are greatly improved. This subject mainly realizes the hardware design and software application design of the embedded oil closed flash point tester. The whole machine uses ARM7S3C44B0X as the core processor to control the whole testing process. The hardware design mainly completes the system's crystal oscillator and reset circuit, power circuit, memory interface circuit, LCD display circuit and keyboard circuit, print output circuit. Design of temperature measurement and A / D data acquisition circuit, flash detection circuit and action control output circuit. The software design mainly includes the transplant of 渭 C / OS-II on ARM7 and the design of application program. The innovation of this paper is that the CPU control part of the instrument is replaced by arm, which makes the embedded oil flash point tester have great improvement in speed, precision and stability. At the same time, combining the temperature control system of this subject, a pid control algorithm of changing integral is put forward in the aspect of temperature control algorithm, and the integral gain constant is calculated by simulation. The control precision is much higher than that of simple pid control.
【学位授予单位】：长春工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE622

【相似文献】