基于嵌入式Linux的电力集抄系统数据集中器的研究与实现

发布时间：2018-11-03 11:46

【摘要】：随着电子技术和通讯技术的不断发展，电力集抄系统已成为电力行业研究的一个热点。对智能电力集抄系统的研发，不仅仅可以减少传统抄表出现的诸多弊端，如错抄、漏抄、估抄等，还有便于供电管理单位科学计算变损，给人们的日常生活以及能源管理部门的工作提供了方便，同时提高了能源的有效地分配和利用。本文设计实现了电力集抄系统中的核心组成部分—数据集中器，具体完成工作如下：（1）对数据集中器的工作原理和功能需求进行分析，针对目前我国电力集抄系统存在的不足，提出一种基于嵌入式Linux的设计方案，按照嵌入式系统的开发流程，确定了硬件和软件设计方案。（2）根据系统的功能需要，划分整体系统的硬件结构，实现电源控制模块、交流采样模块、LCD液晶显示模块、RS485通信、GPRS通信、以太网通信模块、低压电力载波和无线通信的复合接口的设计。同时使用无线通信模块，运用自组网技术，实现了下行通道的非视距传输。（3）完成交叉编译环境的搭建，Bootloader以及嵌入式Linux系统内核的移植，同时详细介绍了根文件系统的制作过程，并在此基础上完成底层硬件驱动程序的开发及上层应用软件的设计。（4）完成数据集中器在各种通信方式下的抄表测试及远程升级测试。该系统旨在将电子技术领域的新技术，将嵌入式Linux、GPRS、复合通信及自适应组网技术应用于电力集抄行业，以AT91SAM9261作为处理单元、以GPRS和以太网作为远程无线数据传输模块、以低压电力载波和无线模块作为下行通信方式，实现了电能数据的采集、传输、显示和分析。该系统充分利用了AT91SAM9261嵌入式处理器和Linux操作系统的强大管理功能，，具有性能稳定可靠、实时性好、通信速度快的特点，为电力部门提供一种新的用电信息采集手段。
[Abstract]:With the development of electronic technology and communication technology, power collection system has become a hot spot in power industry. The research and development of intelligent electric power centralized reading system can not only reduce the disadvantages of traditional meter reading, such as misreading, leakage, estimation and so on, but also facilitate the power supply management units to calculate losses scientifically. It not only provides convenience for people's daily life and energy management department's work, but also improves the efficient distribution and utilization of energy. This paper designs and implements the data concentrator, which is the core component of the power centralized reading system. The detailed work is as follows: (1) analyze the working principle and functional requirements of the data concentrator. A design scheme based on embedded Linux is put forward in view of the shortcomings of the electric power centralized reading system in our country at present. According to the development flow of the embedded system, the hardware and software design scheme is determined. (2) according to the function requirement of the system, the hardware structure of the whole system is divided into three parts: power control module, AC sampling module, LCD liquid crystal display module, RS485 communication, GPRS communication, Ethernet communication module, etc. Design of complex interface between low voltage power carrier and wireless communication. At the same time, the wireless communication module and the technology of ad hoc network are used to realize the non-line-of-sight transmission of the downlink channel. (3) build the cross-compiling environment, transplant the kernel of Bootloader and embedded Linux system, and introduce the process of making root file system in detail. On this basis, the development of the underlying hardware driver and the design of the upper application software are completed. (4) completing the meter reading test and remote upgrade test of data concentrator in various communication modes. The purpose of the system is to apply the embedded Linux,GPRS, composite communication and adaptive networking technology to the power collection and reading industry, to use AT91SAM9261 as the processing unit and GPRS and Ethernet as the remote wireless data transmission module. The acquisition, transmission, display and analysis of power data are realized by using low voltage power carrier and wireless module as downlink communication mode. The system makes full use of the powerful management functions of AT91SAM9261 embedded processor and Linux operating system, and has the characteristics of stable and reliable performance, good real-time performance and high communication speed. It provides a new power information collection method for power department.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM76;TP368.1

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