嵌入式电网分析仪中双CPU间的通信

Communication between dual CPU in embedded electrical power network analyzer

为了提高速度和效率,在上一代电网分析仪的基础上采用DSP和AVR单片机构成双CPU处理器平台的电网分析仪系统,其中DSP计算参数,AVR单片机控制报警,充分利用DSP处理大容量数据和复杂算法的能力,以及AVR单片机接口的控制能力。DSP与单片机之间通过SPI接口通信交换信息。研究结果表明该系统设计性能要优于上一代电网分析仪。

In order to improve the speed and efficiency of the electrical power network analyzer, a dual CPU processor based on the last production is designed in this paper,which consists of DSP and AVR single-chip mieroeomputer.DSP calculates the parameter of electrical network and AVR single-chip microcomputer manages the control and alarm function.The electrical power network analyzer makes full use of dealing with a lot of data and complex arithmetic of DSP,and the interface control of AVR single-chip microcomputer.DSP communicates with single-chip microcomputer through SPI interface. The research results show the electrical power network analyzer is better than last production.