摘要
介绍了基于AT89系列单片机的高精度频率计的设计方案,描述了它的系统组成、工作原理和软件设计。此外,阐述了利用单片机实现多周期同步法测量频率的方法,包括同步接口电路设计和测量原理。该频率计采用单片机与频率测量技术相结合,利于多周期同步测量法的实现和灵活的测量自动控制,并且大大提高了测量的精度。
The design idea about a high precision frequency-measurement meter based on AT89 Single-chip computer is introduced. The general designing, operational principle, and software flow are provided. In the paper, the method of synchronous multi-cycle frequency-measurement with SCM is also discussed, including the Synchronous interface circuit and the measurement principle, It＇s easy to achieve the synchronous multi-cycle measurement, auto-control and highprecision by applying SCM and the theory of frequency-measurement,
出处
《电子测量技术》
2006年第5期96-97,150,共3页
Electronic Measurement Technology
关键词
高精度
频率计
单片机
同步法
high precision
frequency meter, SCM
synchronous method
