摘要
设计了一个能产生不同频率正弦波和脉冲波信号源系统,该系统可实现20 Hz^20kHz的高精度、高稳定度的频率输出,并且在10kHz内信号幅度的平坦度为0.1dB,频率步进为5Hz。该系统采用DDS芯片AD9851作为频率源的核心器件,以AT89S52单片机作为系统的控制中心,该系统采用中文选单式操作,人机界面友好。实验测试表明,该系统频率稳定度和精度高,操作简单,可以满足高校电工电子实验室一般实验需求。
A signal source system is designed,which can produce different frequency sine wave and pulse wave signal.The system can output 10 Hz～ 20 kHz signal with high-precision and high stability frequency,and the evenness of signal within the range of 10 MHz is low to 0.1dB degree,and the frequency step is set by 5Hz frequency.The system uses DDS chip AD9851 as the core component of the frequency source,and uses AT89S52 single chip microcomputer as the control center of the system,and also Chinese menu-style operation plays an important role to give a friendly interface in the system.Finally,the experimental results show that the system has high frequency stability,high accuracy and simple operation,and it can meet the requirements of general experiments in the electrical and electronic laboratories of colleges and universities.
出处
《实验技术与管理》
CAS
北大核心
2016年第7期104-108,共5页
Experimental Technology and Management
基金
湖南省高校重点实验室基金资助项目"工程车辆安全性设计与可靠性技术"(2014kfjj01
KF1608)
湖南省教育厅一般项目(15C0620
15C0622)
关键词
信号源
数字控制
直接数字频率合成
频率分辨率
signal source
digital control
direct digital frequency synthesis
frequency resolution
