基于CAN总线和DSP的变电站监控系统

介绍了基于控制器局域网（CAN）总线和数字信号处理器（DSP）的变电站监控系统的设计与实现。为了提高系统的实时响应性能和信号处理能力，在硬件设计上采用了DSP和复杂可编程逻辑器件（CPLD）技术，使系统的集成化程度和可靠性得到显著提高；采用了模块化的程序设计方法，同时通过利用DSP的中断资源，解决了多任务对CPU的同时请求以及交叉的问题，提高了系统的实时性和软件的运行效率。介绍了以TI公司的TMS320LF2407A作为处理器和ALTERA公司的MAX7000S系列的EPM7128STC100-6为外围数字电路的系统硬件电路设计。最后介绍了基于CAN总线的DL/T 634-1997通信协议。

SUBSTATION MONITORING SYSTEM BASED ON CAN BUS AND DSP

The design and realization of substation monitoring system based on CAN bus and DSP is introduced. In order to enhance the ability of real-time response and signal process, DSP and CPLD are adopted in the hardware design, thus the integration degree and reliability are increased obviously. In the software design the way of modularization is used. To solve the simultaneous request of multitask to CPU and intersectional problems, the interrupt resources of DSP are fully utilized, and the real-time property and running efficiency of the software is improved. This paper presents the hardware design based on TMS320LF2407A made by TI Co. and EPM7128STC100-6 belonging to the series of MAX7000S made by ALTERA Co. Finally the DL/T634-1997 communicating stipulations of an agreement based on CAN bus is introduced.