摘要
为了提高频率计的测量精度和系统性能,一方面对传统的等精度频率计的测量方法进行改进,另一方面采用SOPC设计技术,FPGA芯片上配置NiosⅡ嵌入式软核处理器的系统实现方案。利用FPGA高速数据处理能力实现对各参数的测量计数,软核处理器优良的数据处理能力实现对频率、周期、脉冲宽度和占空比的计算及显示。结果表明该频率计系统性能优良、测量精度高、成本低、体积小。
In order to improve the measurement accuracy and system performance of frequency meter,on the one hand,the measurement method of traditional equal precision frequency meter was analyzed and improved;on the other hand,the system implementation of configuration of embedded NiosⅡsoft-core processors on FPGA chip was proposed based on SOPC.High-speed data processing capabilities of FPGA was used to achieve measuring and counting of the various parameters.Soft-core processor of excellent data processing capability was used to achieve calculation and display of the frequency,period,pulse width and duty cycle.Testing results show that the frequency meter has good performance,high accuracy,low cost,and small size.
出处
《实验室研究与探索》
CAS
北大核心
2012年第6期217-220,共4页
Research and Exploration In Laboratory
