新型变电站防误操作电脑钥匙的研究与开发

发布时间：2019-05-28 13:12

【摘要】：电力行业对保障我国的工农业生产和居民的正常生活起到了重要的作用,所以保障电力系统的正常运行具有重要的意义。变电站就是电力系统中一个非常重要的环节,而电气防误闭锁系统是防止电气误操作事故发生以及保障变电站安全运行的一个重要装置。在现行的微机型防误闭锁系统中,电脑钥匙是一个主要的组成部分,作为一款便携式终端设备,在防止电力系统误操作中起着重要的作用。随着电力工业以及嵌入式技术和微电子技术的发展,对电脑钥匙的性能要求也不断提高。本文将基于ARM-Linux的嵌入式系统应用到电脑钥匙中,旨在设计一款基于嵌入式系统的便携式手持设备。在硬件方面,构建了以S3C2440A微处理器为核心的硬件系统,采用模块化思想对硬件系统进行了功能划分,在更好的实现电脑钥匙已有功能的基础上,根据需要又添加了GPRS无线传输方式、MINI USB数据传输接口、录音拍照功能、MINI SD卡接口、LCD触摸屏功能以及设计了手持设备的电源管理模块,并对各个功能模块进行了详细分析,给出了设计电路原理图。在软件方面,以嵌入式Linux操作系统为核心设计了新型电脑钥匙的软件平台,使用操作系统管理和调度整个系统的资源,方便了系统的升级和上层应用程序的开发。在搭建好的软件平台上,针对电脑钥匙的音频模块和图像采集模块开发出相应的设备驱动程序。最后,使用嵌入式图形用户界面开发工具Qt/Embedded设计了电脑钥匙的图形用户界面,使得对电脑钥匙的操作更加直观方便基于嵌入式技术的电脑钥匙功能强大,性能稳定,小巧灵活,用户操作更加方便,便于手持和携带,使得电脑钥匙成为一款真正的便携式智能手持终端设备,对于防止变电站误操作事故的发生可以起到更大的作用。
[Abstract]:The electric power industry plays an important role in ensuring the industrial and agricultural production and the normal life of the residents in our country, so it is of great significance to ensure the normal operation of the power system. Substation is a very important link in power system, and electrical error-proof locking system is an important device to prevent electrical misoperation accidents and ensure the safe operation of substations. In the current microcomputer anti-error locking system, the computer key is a major part. As a portable terminal equipment, it plays an important role in preventing the wrong operation of the power system. With the development of power industry, embedded technology and microelectronics technology, the performance requirements of computer keys are also improving. In this paper, the embedded system based on ARM-Linux is applied to the computer key, and a portable handheld device based on embedded system is designed. In the aspect of hardware, the hardware system with S3C2440A microprocessor as the core is constructed, and the function of the hardware system is divided by modularization idea, on the basis of better realizing the existing function of computer key. According to the need, the GPRS wireless transmission mode, MINI USB data transmission interface, recording and photography function, MINI SD card interface, LCD touch screen function and the power management module of the handheld device are designed, and each functional module is analyzed in detail. The schematic diagram of the design circuit is given. In the aspect of software, a new software platform of computer key is designed with embedded Linux operating system as the core. The operating system is used to manage and schedule the resources of the whole system, which facilitates the upgrade of the system and the development of the upper application program. On the built software platform, the corresponding device driver is developed for the audio module and image acquisition module of computer key. Finally, the graphical user interface of computer key is designed by using embedded graphical user interface development tool Qt/Embedded, which makes the operation of computer key more intuitionistic and convenient. The computer key based on embedded technology has powerful function and stable performance. Small and flexible, user operation is more convenient, easy to hold and carry, so that computer keys become a real portable intelligent handheld terminal equipment, in order to prevent substation misoperation accidents can play a greater role.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM76;TP368.1

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