基于单片机的场地分类仪设计

发布时间：2018-09-17 12:05

【摘要】：影响建筑所采取的抗震措施的因素有很多,其中场地条件就着重要的影响,因此如何快速准确的进行场地类别的划分是建筑设计中的一项重要任务。由于影响场地类别的划分条件较多,根据现行的建筑抗震设计规范要求,一般选取两到三个条件进行考虑,作为场地类别划分的依据。本课题选取等效剪切波速vse和场地覆盖层厚度dov两个条件作为场地分类的依据,基于单片机控制器设计出了操作简单、使用方便的手持式建筑场地分类仪。在工程人员需要确定场地特征时,只要输入等效剪切波速vse和场地覆盖层厚度dov两个参数,即可直接得到所需的场地分类。论文中以作者研究的基于单片机的场地分类仪设计课题为背景,通过基于模糊分类特征建立的二维隶属函数,作出了便携式的场地分类仪。课题主要完成了以下几项工作： (1)综述了基于单片机的场地分类仪设计项目研究的目的、意义和国内外研究现状。 (2)探讨了项日所需的关键技术。首先介绍了系统的硬件设计方案及所需核心硬件的特点；其次是软件系统的设计方案和设计架构。 (3)完成了基于单片机的场地分类仪设计,包括系统的硬件设计和软件设计,系统采用模块化的设计方法,便于以后的升级和维护。在该系统的硬件设计中,主要包括硬件系统的选型、单片机控制板及其辅助电路的设计、供电系统设计、键盘模块设计、液晶显示模块设计、通信接口设计等内容；软件设计中,重点介绍了软件系统的设计思想及系统中各个功能子程序的实现,并详细说明了基于场地模糊化分类所建立的二维隶属函数,最后通过编写程序实现二维隶属函数中的土层等效剪切波速vse和场地覆盖层厚度dov两个参数在不同数值下对应的四类标准场地土的隶属度向量u的数据采集,并根据得出的隶属度向量μ的数值来区分场地类型。 (4)进行了硬件系统和软件系统的仿真调试,在此基础上制作出了手持式的场地分类仪,并进行了工程实例的应用分析,其结果表明与抗震设计规范中的结果一致。基于单片机的场地分类仪具有结构简单,体积小,使用携带方便的特点,对新型场地分类仪的设计作出了一定的探索。
[Abstract]:There are many factors affecting the seismic measures taken by buildings, among which the site conditions play an important role, so how to quickly and accurately classify the site types is an important task in architectural design. Three conditions are considered as the basis of site classification. In this paper, two conditions, equivalent shear wave velocity VSE and site cover thickness dov, are selected as the basis of site classification. As long as two parameters of equivalent shear wave velocity VSE and site cover thickness Dov are input, the required site classification can be obtained directly.
In this paper, a portable site classifier is designed on the basis of two-dimensional membership function based on fuzzy classification features. The main tasks are as follows:
(1) The purpose, significance and research status of site classifier design project based on MCU are summarized.
(2) Discussed the key technologies needed for the project day. Firstly, introduced the hardware design scheme of the system and the characteristics of the required core hardware; secondly, the software system design scheme and design framework.
(3) The design of site classifier based on MCU is completed, including the hardware design and software design of the system. The system adopts modular design method to facilitate the upgrade and maintenance in the future. Module design, LCD module design, communication interface design, etc. In software design, the design idea of software system and the realization of each function subroutine in the system are mainly introduced, and the two-dimensional membership function based on site fuzzy classification is explained in detail. Finally, the two-dimensional membership function is realized by programming. Data acquisition of four types of standard site soil membership vector u corresponding to two parameters of soil equivalent shear wave velocity VSE and site cover thickness Dov under different values, and site types are distinguished according to the values of membership vector U.
(4) The hardware system and software system are simulated and debugged, and the hand-held site classifier is made on the basis of which, and the application analysis of an engineering example is carried out. The results show that the results are consistent with those in the seismic design code.
The site classifier based on single chip microcomputer has the characteristics of simple structure, small volume and easy to use and carry.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1;TU197

【参考文献】