基于Linux-Qt的DIS系统设计

发布时间：2018-12-25 19:23

【摘要】：DIS (Digital Information System)即数字信息化系统,为了实现教育部关于把信息技术融合到学科教学的目标而产生新一代的教学实验系统,主要适用于物理化学生物等相关的教学实验,在教学研究中被广泛的应用。随着电子科技的不断发展,DIS系统也在不停的更新换代以适应教学科研的新要求,朝着处理速度更快,采集功能更全面,操作界面更友好,携带更方便等目标发展。本版DIS系统硬件核心处理器选择AT91SAM9X35,内置LCD控制器和以太网MAC,支持高速SD卡和USB接口,功能非常强大,能够满足实时采集的要求。主处理器AT91SAM9X35通过GM8142向传感器发送采集命令,传感器再通过GM8142或者AD7323将数据传到采集器端。我们在ARM处理器上搭建并移植了Linux-Qt的嵌入式开发环境,利用Qt Creator设计出用户图形界面,对于采集到的数据可以在Qt图形界面下进行波形、数字、表格、指针四种方式显示。此外为了增加DIS系统的便携性和安全性,增加一种双电池平衡充热备份的管理方案,实现的功能包括外部电源供电,锂电池供电,锂电池充电管理,电量检测以及保护电路。该版DIS系统在处理能力、系统稳定性、图形界面显示、成本价格、用户体验等方面都有了很大的提升,基本达到了我们预期设计要求。目前DIS系统具有广泛的市场应用前景,相信随着科技的发展和我们研究的深入DIS还会有进一步的发展。
[Abstract]:DIS (Digital Information System) is the digital information system. In order to realize the goal of integrating information technology into the subject teaching of the Ministry of Education, a new generation of teaching experiment system is produced, which is mainly suitable for the related teaching experiments, such as physical, chemical, biological and so on. It is widely used in teaching research. With the continuous development of electronic science and technology, DIS system is constantly updating to meet the new requirements of teaching and research, towards the goal of faster processing, more comprehensive collection function, more friendly interface, more convenient to carry and so on. The hardware core processor of this DIS system chooses AT91SAM9X35, built-in LCD controller and Ethernet MAC, to support high speed SD card and USB interface. It is very powerful and can meet the requirement of real-time acquisition. The main processor AT91SAM9X35 sends the acquisition command to the sensor through GM8142, and the sensor transmits the data to the collector through GM8142 or AD7323. We have built and transplanted the embedded development environment of Linux-Qt on the ARM processor and designed the user graphical interface by using Qt Creator. The collected data can be displayed in four ways under the Qt graphical interface: waveform, digital, table and pointer. In addition, in order to increase the portability and security of DIS system, a new management scheme of balancing recharge and heat backup of dual batteries is added. The functions of the system include external power supply, charge management of lithium battery, electric quantity detection and protection circuit. This version of DIS system has greatly improved in processing ability, system stability, graphical interface display, cost price, user experience and so on, basically met our expected design requirements. At present, DIS system has a broad market application prospect, I believe that with the development of science and technology and our in-depth study of DIS will have further development.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP273;TP368.1

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