基于ARM的换热机组智能控制器的设计与应用

发布时间：2018-06-15 09:18

  本文选题：集中供热 + 换热机组　； 参考：《山东大学》2017年硕士论文

【摘要】：我国城市供热伴随国家建设一起发展,从第一个五年计划即开始部署集中供热事业,1980年正式贯彻发展集中供热的方针,到目前为止集中供热已是城市供热的主要方式。集中供热系统按照热传递的不同方式可分为两种模式:第一种是热媒从热源直接进入热用户;第二种为一次网的热媒从热源出发进入换热站,与二次网的热媒进行热交换,最终由二次网的热媒将热能传递给热用户。本课题在第二种模式的应用背景下,设计了一款基于ARM内核的智能换热机组控制器,该控制器使用双MCU结构,其内置的智能算法使得换热机组能够根据气候状况及热用户需求自动调节换热过程;此外该控制器具有人机交互、越限报警、故障处理、远程通信等功能,能够满足不同应用场景的需求,实现换热站无人值守的目的。随着物联网以及工业信息化的快速发展,城市集中供暖系统也由单独管理逐步向集中控制变化,本课题设计的控制器使得这种变化成为可能,从而具有广阔的发展潜力和市场前景。本文首先从供热领域走可持续发展道路的背景出发,阐述了研究一款新型智能换热机组控制器的必要性。接着由大及小依次介绍了集中供热系统、换热站和换热机组的组成、工作原理及系统特性,选择模糊PID控制算法结合气候补偿原理实现换热机组的控制。然后提出主控制器+通信控制器双MCU的系统方案,并选用基于ARM Cortex-M3内核的STM32F10x系列芯片作为微控制器,使得控制功能与通信功能分模块实现,保证系统的实时性和可靠性。其次,分模块使用不同的软件构架,主控制器采用主循环和多个中断的传统前后台方式,程序在主循环中一直等待人机交互操作,中断中对数据进行处理;通信控制器则移植μC/OS-Ⅲ嵌入式实时操作系统,根据各任务的特点及相互之间的关系,为其设立优先级、休眠条件以及任务间通信方式等,程序按照优先级先后执行各项任务。最后,将换热机组控制器分别在模拟环境和实际换热站中进行测试运行,实验结果证明本课题的设计满足控制要求。
[Abstract]:With the development of national construction, central heating has been deployed since the first five-year plan in our country. In 1980, the policy of central heating was formally carried out. Up to now, central heating has been the main way of urban heating. The central heating system can be divided into two modes according to the different ways of heat transfer: the first is the heat medium coming directly from the heat source to the heat user; the second is the heat medium of the primary network starting from the heat source to enter the heat exchange station, and the heat medium of the secondary network is heat exchanged with the heat medium of the secondary network. Finally, the heat energy is transferred to the heat user by the heat medium of the secondary network. Based on the application of the second mode, an intelligent heat exchanger controller based on arm kernel is designed in this paper. The controller uses dual MCU structure. The built-in intelligent algorithm enables the heat exchanger to automatically adjust the heat transfer process according to the climate conditions and the needs of the thermal users. In addition, the controller has the functions of man-machine interaction, over-limit alarm, fault handling, remote communication, etc. It can meet the needs of different application scenarios and realize the purpose of unattended heat exchange station. With the rapid development of Internet of things and industrial informatization, urban central heating system has gradually changed from individual management to centralized control. The controller designed in this paper makes this change possible. Thus has the broad development potential and the market prospect. In this paper, the necessity of studying a new type of intelligent heat exchanger controller is expounded from the background of sustainable development in the field of heating. Then, the composition, working principle and system characteristics of central heating system, heat exchange station and heat exchanger unit are introduced in order of big and small. The fuzzy pid control algorithm combined with the principle of climate compensation is selected to realize the control of heat exchanger unit. Then the system scheme of dual MCU of main controller communication controller is put forward, and STM32F10x chip based on arm Cortex-M3 core is selected as microcontroller, which makes the control function and communication function sub-module realize, and ensures the real-time and reliability of the system. Secondly, the module uses different software architecture, the main controller adopts the traditional front and back mode of main cycle and multiple interrupts, the program always waits for man-machine interaction operation in the main cycle, and the data is processed in interrupt. The communication controller transplant 渭 C / OS- 鈪，

本文编号：2021528