【作者】 冯保才；

【导师】 刘健；

【作者基本信息】 西安科技大学 ， 信号与信息处理， 2007， 硕士

【摘要】 电力负荷管理终端是电力负荷管理系统的智能采集执行终端设备,对实现需求侧管理、缓解电力供需矛盾具有重要的意义。本文在电力负荷管理的需求分析基础之上,提出并论证了基于ARM处理器和嵌入式实时操作系统相结合的电力负荷管理终端设计方案,并进行了硬件和软件总体设计。对电力负荷管理终端硬件电路进行了设计与实现,主要包括:ARM核心模块、电量采集模块、状态量采集模块、控制输出模块、通讯接口模块、电源模块、复位与系统时钟、JTAG接口、外部存储器扩展和LCD显示以及键盘模块等,并研制成功原理样机。研制开发了电力负荷管理终端软件,主要包括:嵌入式实时操作系统(μC/OS-II)、文件系统和图形用户界面GUI移植,系统监视任务、文件服务任务、负荷管理任务、定时采集任务、数据处理任务、抄电表任务、基于GPRS/CDMA的通讯任务、键盘扫描和液晶显示任务等软件模块开发,并设计了实时多任务的软件看门狗技术,提高了系统的可靠性。为了确保通讯安全性,通过对比各种加密算法,并考虑处理器的性能,采用了高安全性、高速度性和便于ARM实现的加密算法BTEA,使得在电力负荷管理终端上能可靠、实时的运行,并且保证了电力负荷管理系统的数据传输的可靠性、实时性。对系统终端进行了测试,结果表明其功能和性能指标都达到电力负荷管理系统通用技术条件的要求。更多还原

【Abstract】 Power Load Management Terminal (PLMT), which plays an important role in realizing the Demand Side Management (DSM) and relieving the conflict of supplying and demand, is the Intelligent Acquisition & Executive Terminal device of the Power Load Management System.Based on the demands analysis of Power Load Management, the design of Power Load Management Terminal, which is based on the ARM processor and Embedded Real-Time Operating System (RTOS), is presented and demonstrated. The overall design of the hardware and software is carried out.The hardware circuits of PLMT, which include electronic core module of ARM, electric measure module, states measure module, control output module, communications interface module, power supply module, reset and system clock circuit, JTAG interface, external memory expansion, LCD display and keyboard module, etc. are designed and realized .The prototype is developed successfully.The software of PLMT, which consists of the transplantation of embedded real-time operating systemμC/OS-II, file system and graphical user interface (GUI), system monitoring task, documentation services task, load management task, timing dara acquisition task, data processing task, watt-hour meter reading task, communications based on GPRS/CDMA task, keyboard scan and liquid crystal display task, etc. is developed. The system reliability is improved by the technique of software watchdog of the real-time multitask.To gurantee the communications security, an encryption approach is used. Considering the feature of ARM, BTEA is selected through comparison of various encryption algorithms, which has the advantages such as high security, high speed and easily implemented on ARM. Consequently, both reliability and efficiency of data communication can be achieved. Testing results of the system of PLMT show that its functions and performances meet the requirements of General Specification of Power Load Management System.更多还原