摘要
本文从门限电压值的选择对信号周期检测精度影响的分析入手,提出了一款基于“过零检测”理论和双CPU的单片机的相位检测技术。该技术具有电路实现简洁、测量精度高、实时性强等优点,在信号测试等应用领域,有较好的参考价值。
By analyzing the influence of threshold voltage on detection precision,a new technology of phase difference which based on“zero-crossing”and double CPU is present -ed.The circuit based on this technology is simply and it can obtain high precision.It can be used in real-time measurement system and have the referential value for field of signal measurement.
出处
《电测与仪表》
北大核心
2003年第12期29-32,共4页
Electrical Measurement & Instrumentation
关键词
相位
过零检测
门限电压
单片机
测量精度
信号测试
phase
zero-crossing detection
threshold voltage
microcontroller
measure ment
