AMI系统下基于嵌入式Linux的专变采集终端设计

发布时间：2019-05-21 09:52

【摘要】：随着经济的快速发展,用电需求不断扩大,电力需求侧的用电信息采集以及负荷控制管理变得越来越重要。专变采集终端是高级计量架构(Advanced Metering Infrastructure, AMI)系统下重要的用电信息采集与管理设备,主要功能包括数据采集、数据处理、负荷控制、事件记录、数据传输等。本文提出了一种采用高性能32位嵌入式RISC SOC硬件平台及实时嵌入式Linux操作系统软件平台的解决方案。终端硬件设计方面,按照嵌入式工业计算机系统的标准,采用平台化、模块化的设计策略,着重研究了主板单元、通信模块、独立计量单元以及具有抗静电、防误接380V交流电压、防雷击功能的抄表电路。软件设计方面,采用嵌入式Linux实时操作系统,着重研究了基于AT91SAM9260平台嵌入式Linux的驱动设计包括UART、SPI总线、NAND Flash、RTC时钟、看门狗等设备。应用软件自顶向下采取模块化的分层设计,包括通信模块、异常处理模块、负荷控制模块等,有很好的扩展性和移植性。从目前实际应用的情况来看,此设计方案的专变采集终端运行稳定可靠,达到了预期的效果与功能要求。
[Abstract]:With the rapid development of economy and the expansion of power demand, the collection of power information and load control management on the power demand side become more and more important. The special transformer acquisition terminal is an important power information acquisition and management equipment under the advanced metering architecture (Advanced Metering Infrastructure, AMI) system. Its main functions include data acquisition, data processing, load control, event recording, data transmission and so on. In this paper, a solution based on high performance 32-bit embedded RISC SOC hardware platform and real-time embedded Linux operating system software platform is proposed. In the aspect of terminal hardware design, according to the standard of embedded industrial computer system, the motherboard unit, communication module, independent metering unit and antistatic are studied by using platform and modularization design strategy. Anti-misconnection 380V AC voltage, lightning protection function of meter reading circuit. In the aspect of software design, the embedded Linux real-time operating system is used to study the driver design of embedded Linux based on AT91SAM9260 platform, including UART,SPI bus, NAND Flash,RTC clock, watchdog and so on. The application software adopts modular hierarchical design from top to bottom, including communication module, exception handling module, load control module and so on, which has good expansibility and portability. According to the current practical application, the special transformer acquisition terminal of this design scheme is stable and reliable, and meets the expected results and functional requirements.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM76;TP368.1

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