气体标准物质制备装置的软件设计与实现

发布时间：2018-02-26 21:56

本文关键词： WinCE6.0 嵌入式设计 ARM11 自动称量控制 Visual Studio2008 标准气体配制　出处：《电子科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着科学技术和国民经济的高速发展，气体标准物质的需求量急剧增加，采用传统人工手动称量法制备气体标准物质工作强度大、质量保障程度差、效率低的弊端日益显现。本课题针对这些弊端，研究了称量法制备气体标准物质的关键技术，分析自动称量制备装置的工艺流程和功能需求，开发了对称量法制备工艺流程的控制软件，研制了全自动称量法气体标准物质制备装置软件。研制的标准气体制备装置只需通过触摸屏简单输入参数，不需任何人工干预和计算，自动计算各组分气充装质量，根据原料气瓶与制备气瓶气压差自动控制制备最佳充气流量，完成称量制备的全部工作，并且根据实际充装质量完成制备浓度定值计算和浓度定值不确定度评定。本系统采用自下而上的四层控制架构，从设备层到控制层，再到人机交互层，最后到信息管理层，结构清晰明朗。控制硬件使用内置有12位ADC的单片机C8051F410，完成数据4路压力采集，同时控制4路阀门，软件使用Keil Software公司出品keil使用C语言对下位机驱动编程，上位机下位机采用RS232通讯。人机交互层采用三星公司的ARM11结构的S3C6410微处理器，操作系统采用微软公司嵌入式、移动计算平台的基础Windows CE6.0嵌入式系统，在VisualStudio2008环境进行嵌入式软件设计，使用5.6寸触摸屏作为数据显示和用户交互输入。实现如下功能：1.数据库：贮存常用60种气体的摩尔质量、不同气体在不同气压差Δp下球阀开启角度(流量)表、工艺要求参数、各计算公式等资料；2.数据分析处理功能：将适时采集的各工种参数与工艺要求参数进行比较分析，确定执行程序，，进行制备结果计算；3.数据采集功能：适时采集各气瓶气压、制备瓶质量等参数；4.执行功能：根据工艺要求和数据分析结果选择执行适当程序，完成气体标准物质制备。
[Abstract]:With the rapid development of science and technology and the rapid development of national economy, the demand for gas reference materials increases rapidly. The drawback of low efficiency appears day by day. In view of these disadvantages, the key technology of preparing gas standard material by weighing method is studied, and the process flow and function requirement of automatic weighing preparation device are analyzed. The control software for the preparation process of weighing method was developed, and the software for the preparation of gas reference material by automatic weighing method was developed. The developed standard gas preparation device only needs simple input parameters through the touch screen, does not need any manual intervention and calculation, and automatically calculates the filling quality of each component. According to the gas pressure difference between the raw gas cylinder and the prepared gas cylinder, the optimal gas flow rate is automatically controlled to complete all the work of the weighing preparation, and the calculation of the preparation concentration and the evaluation of the uncertainty of the concentration are completed according to the actual filling quality. This system adopts the four layers control structure from the bottom up, from the equipment layer to the control layer, then to the human-computer interaction layer, and finally to the information management layer, the structure is clear and clear. The control hardware uses the single chip C8051F410 with 12 bits ADC, completes the data 4-way pressure collection, and controls the 4-way valve at the same time. The software uses keil produced by Keil Software Company to use C language to drive the lower computer, and the upper computer uses RS232 to communicate. The man-machine interaction layer adopts the S3C6410 microprocessor of Samsung ARM11 structure, the operating system adopts the embedded system of Microsoft Corporation, the basic Windows CE6.0 embedded system of mobile computing platform, and carries on the embedded software design in the VisualStudio2008 environment. Use 5. 6 inch touch screen as data display and user interaction input. The function is as follows: 1. Database: store the mole mass of 60 kinds of gases commonly used, the opening angle (flow) table of ball valve under different pressure difference 螖 p, the process requirement parameter, Data analysis and processing function: compare and analyze the parameters of each type of work collected in time and the parameters of process requirements, determine the execution procedure, carry out the calculation of the preparation result. 3. Data acquisition function: collect the air pressure of each cylinder in good time, Performance function: according to the process requirements and data analysis results selected to execute the appropriate procedures to complete the preparation of gas reference materials.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.12

【共引文献】