单晶衍射仪远程智能控制系统的设计与实现

发布时间：2018-03-02 01:32

本文关键词： 单晶衍射仪远程控制系统智能寻峰　出处：《中国科学院大学(中国科学院沈阳计算技术研究所)》2017年硕士论文　论文类型：学位论文

【摘要】：X射线单晶衍射结构分析是认识晶态物质微观结构的重要途径和权威方法,X射线单晶衍射仪也逐渐成为常规表征仪器。通过X射线单晶衍射仪的研发,提升了我国重大仪器设备专项的国际竞争力,同时突破了国内X射线单晶衍射仪一直处于空白的尴尬现状,改变国内高等院校、科研院所一直以来依靠国外进口的被动局面。X射线单晶衍射仪操作与控制系统负责对仪器各个部件进行监控、数据采集、分析和处理,是单晶衍射仪的核心软件。论文结合国家重大科学仪器设备开发专项X射线单晶衍射仪操作与控制系统,深入了解各组成功能模块及系统架构,综合现阶段已有的单晶衍射仪软件控制系统存在的不足,突破上位机直接控制下位机模式,设计了基于C/S结构的组织架构;采用RabbitMQ企业级消息队列服务器作为通信控制服务器,根据系统具体业务对消息系统进行设计并以此为基础搭建远程控制系统的通信控制层;封装系统业务,终端通过自定义协议XSI进行远程通信;在图像预处理方面应用晶体学相关知识对衍射图像的倒易变换进行理论上的推导,设计并实现寻峰算法,强度分布算法以及强度映射算法,为后期图像处理提供有力的理论支撑;设计并实现智能判别算法,采用基于峰值点强度以及坐标位置的评价标准实现设备状态的智能判定;最后对远程控制系统的功能和通信控制服务器性能进行了测试。
[Abstract]:X-ray single crystal diffraction structure analysis is an important way to understand the microstructure of crystalline materials. X-ray single crystal diffractometer has also gradually become a conventional characterization instrument, through the development of X-ray single crystal diffractometer, It has enhanced the international competitiveness of major instrument and equipment projects in our country, at the same time broke through the embarrassing situation that domestic X-ray single crystal diffractometer has been in blank all along, and changed the domestic universities and colleges. The operating and controlling system of X-ray single crystal diffractometer is responsible for monitoring, data acquisition, analysis and processing of each component of the instrument. It is the core software of single crystal diffractometer. In this paper, the operation and control system of X-ray single crystal diffractometer is developed in combination with the national major scientific instrument equipment, and the functional modules and system structure of each component are deeply understood. Based on the shortcomings of the existing single crystal diffractometer software control system, the paper designs the organization structure based on C / S structure and adopts RabbitMQ enterprise message queue server as the communication control server, which breaks through the mode of the upper computer directly controlling the lower computer, and designs the organization structure based on the C / S structure. The message system is designed according to the specific services of the system and the communication control layer of the remote control system is built on the basis of which the communication control layer of the remote control system is built, and the system service is encapsulated. The terminal carries on the remote communication through the custom protocol XSI. In the aspect of image preprocessing, using the knowledge of crystallography to deduce the reciprocal transformation of diffraction image, we design and implement the peak searching algorithm, intensity distribution algorithm and intensity mapping algorithm. It provides powerful theoretical support for later image processing, designs and implements intelligent discriminant algorithm, and uses the evaluation standard based on peak strength and coordinate position to realize the intelligent judgment of equipment state. Finally, the function of remote control system and the performance of communication control server are tested.
【学位授予单位】：中国科学院大学(中国科学院沈阳计算技术研究所)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP391.41;TP273.5

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