摘要
针对传统信号发生器体积大携带不便、升级困难的缺陷,以及现有虚拟信号发生器生成信号频率偏低的不足,提出了将DDS技术同虚拟仪器技术结合,联合D/A转换器共同实现虚拟信号发生器的设计方案,并给出了具体的系统软硬件设计。实验表明提出的虚拟信号发生器设计不仅解决了已有信号发生器的不足,而且具有成本低、扩展灵活、升级方便等优点。
Traditional signal generator is not small, portable, and difficult to upgrade. And virtual signal generators in existence only generate lower frequency signal. Aimed at the limitations, it is proposed that virtual signal generator is designed by the combination among DDS technology, virtual instrument technology and A/D converter, and the design of system hardware and software is given concretely . Experiments shows that not only shortcomings of exiting signal generator are resolved but also some characters, such as lower cost, convenient upgrade etc. are taken on for the new design of virtual signal generator.
出处
《科学技术与工程》
2008年第7期1851-1855,共5页
Science Technology and Engineering
基金
西安工程大学校管科研项目(2006XG13)资助
