基于DSPBuilder与DDS的函数发生器的设计  

Design of function generator based on DSP Builder and DDS

作　　者：孙丹丹[1] 丛梦龙[1] 

机构地区：[1]内蒙古民族大学物理与电子信息学院

出　　处：《电子世界》2014年第22期222-223,共2页Electronics World

基　　金：内蒙古民族大学博士科研启动基金（项目编号：BS138）.

摘　　要：为满足电子、通信等工科专业在研究与教学中的需要，设计了便携式多功能函数发生器。在按键与显示模块的设计中，采用STC15F2K61S2单片机作为控制核心；在函数发生器内核的设计中，引入DSP Builder与Simulink平台结合的方式，取代原有QuartusⅡ软件，进而实现了图形化的系统建模，缩短了设计的周期。采用DDS技术，即直接数字频率合成，来产生输出波形的频率，可以提高频率分辨率，并实现快速的频率切换。To meet the needs of electronics and other engineering specialized in research and teaching, a portable mulfifunctional function generator was designed.For buttons and display module, single chip microcomputer typed with STCI 5F2K60S2 was used as the core; In the design of kernel function generator, traditional Quartus Ⅱ software was replaced by DSP Builder and Simulink platform, thus the graphical system modeling was realized, and the design cycle was shorted.Using DDS technology, i.e.direct digital frequency synthesis for generating the frequency of output waveform, the frequency resolution was improved, and fast frequency switching was realized.

关 键 词：函数发生器 单片机 直接数字频率合成 DSP BUILDER 

分 类 号：TN957.5[电子电信—信号与信息处理]