a. 硬件上采用多总线哈佛(Harvard)结构,提高了数据的处理能力和速度。
b. 指令执行采用流水作业,具有较高的指令执行速度。
c. DSP内部一般都包括有多个处理单元,如算术逻辑运算单元、辅助寄存器运算单元、累加器以及硬件乘法器等,它们可以在一个指令周期内同时进行计算。
d. 内部具有独立的DMA总线控制器,可以实现程序执行与数据传输并行工作。
e. 具有多处理器接口,为使用嵌入式子系统实现大型和复杂嵌入式系统提供了技术基础。
参考文献
1 . 杨光,张太镒,孙建成(Yang Guang, Zhang Taiyi, Shun Jiancheng)DSP多通道缓冲串行口SPI方式的应用(The Application of DSP McBSP Used as SPI). 电子产品世界(Electronic Engineering & Product World)10,2002
2 . 邓思豪,曾春年(Deng Shihao, Zheng Chunnian)C54X DSP的HPI与PC机并口技术研究. 电子产品世界(Electronic Engineering & Product World)7,2002
3 . MCF5272 ColdFire Integrated Microprocessor User’s Manual. Rev 0,12/2000
4 . 任雁铭,操丰梅,秦立军,杨奇逊(Ren Yangming, Cao Fengmei, Qin Lijun, Yang Qixun).基于嵌入式以太网的变电站自动化系统通信网络(Computer Communication Network Based on The Embedded Ethernet Technique for Substation Automation System).电力系统自动化(Automation of Electric Power Systems),Sept.10,2001
5 . 袁渊(Yuan Yuan)基于嵌入式操作系统VxWorks的图形界面开发(The Development of Graphical Interfaces Based on Embedded System---VxWorks).电子产品世界(Electronic Engineering & Product World)10,2002
THE RESEARCH OF DOUBLE PROCESSOR APPLICATION IN THE
SUPERVISORY CONTROL OF TRANSFORMER SUBSTATION
Wang Chengxiu[1], Wang Chuanqi[2]
( Yantai Dongfang Electronics, Yantai 264000, China )
Abstract: The technical developing require in the supervisory control of transformer substation is analyzed in this article. With the application of the project, the need of the double processors mode with DSP and MCU in the supervisory control of transformer substation is primarily discussed. Technical background of the DSP and MCU is introduced. The data communication between DSP and MCU is expounded. A high performance supervisory control unit based on the double processors with DSP and MCU is advanced. The developing trend which DSP and MCU will tend towords introject is indicated.
Key words: supervisory control of transformer substation; digital signal processing; data traffic;embedded ethernet(end)